2010 Toyota Prius

ABS light came on 6 months ago as well as ((!)) light. As soon as those lights came on, the brakes had an increased stopping distance and it became harder to get the car to come to a complete stop. I have seen a few Prius owners in my area also having the same problem with their Prius. For my car, the ABS light would come on, then turn off for 300 or so miles, then turn back on and stay on for about 300 miles. That has lasted for 6 months. I had almost gotten in an accident yesterday after getting brake lines fixed for 4th time, and we determine the actuator and accumulator are both bad. I have also seen a lot of Prius owners with the same code. Where I am at, my shop is quoting me $2300 for the fix in total. That is absurd.

Reported

Jun 2026

Incident date

Jun 2026

Mileage

Not provided

Outcome flags

None reported

The contact owns a 2010 Toyota Prius. The contact stated that while driving at an undisclosed speed, a strong and unusual odor was detected inside the vehicle with no warning lights illuminated. The contact further stated that the following day, upon entering the vehicle, both the contact and the contact’s spouse experienced headaches, nausea, and cognitive discomfort. Concerned about possible exposure to harmful fumes, the contact inspected the vehicle and determined that the vehicle’s battery appeared to be inoperable. The vehicle was taken to a dealer. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The contact expressed concern that the failure presents a serious safety hazard due to potential exposure to toxic fumes within the cabin. The contact noted that the situation could have been more severe if a child had been present in the vehicle at the time of the incident. The failure mileage was approximately 75,000.

Reported

May 2026

Incident date

May 2026

Mileage

Not provided

Outcome flags

None reported

My 2010 Prius has experienced the following error codes: C12341 and C1391, prompting the dealer to recommend replacing the brake booster assembly and master cylinder for $3938.89. This is a known issue with this vehicle and a Customer Support Program (CSP) was issued back in 2018, stating that if this vehicle displayed these codes, the repairs would be at no charge to the customer. Toyota extended this coverage to 10 years from date of first use or 150,000 miles (whichever came first). I never receied the notice. The details of the CSP are below. (I found on the internet.) "Toyota has received reports indicating various brake system related warning lamps illuminate due to internal malfunctions. The Brake Booster and Brake Booster Pump are covered by Toyota’s New Vehicle Limited Warranty for 3 years or 36,000 miles (whichever occurs first). However, because we at Toyota care about each customer’s ownership experience, Toyota is now offering a voluntary Customer Support Program that applies to various brake system related warning lamps of covered vehicles as a result of internal malfunctions, regardless of whether the vehicle is out of warranty. The timing of any repair under this voluntary Customer Support Program is subject to parts availability. The Customer Support Program will be offered for all vehicles until November 30, 2019, regardless of mileage. In addition, the Customer Support Program will be available for 10 years from the date of first use, or 150,000 miles whichever occurs first." My vehicle has about 132,000 miles and just displayed theses codes. Since it is 16 years old, the CSP has expired. It being a known issue, and one related to such a safety concern, I emplore you to make this a formal recall rather than a mere suggestion of repair. Back in 2018, my vehicle was not displaying these codes so was ineligible for the repair. Upon further research I am finding hundreds of Prius owners with the same issue. Clearly this is a defect in manufacturing.

Reported

Apr 2026

Incident date

Apr 2026

Mileage

Not provided

Outcome flags

None reported

There are issues with the brake. Many times the brake pedal goes down to the floor and it losses ability to stop. Apparently there is a common ABS actuator and Brake issues. Toyota will not address the issue

Reported

Mar 2026

Incident date

Jan 2022

Mileage

Not provided

Outcome flags

None reported

i have have 2 problems, both was recalls, but this one they say expired in 2021 when i bought the car and toyota dealer didnt tell me had recall so i could fix it before it expired. there is a class action lawsuit in the brake booster, master cyclinder actuator abs pump fialing loosing brakes making grrr noises leaking all brake fluid out continously dangerous to drive can cause bad accident wreck since i drive down the hwy alot and this is the only car i have to drive, i also have dc inverter module /sensor that is killing off 3 batteries now that i installed in 3 months, and toyota dealers wont fix unless it shows error but its a recall so since problen should fix this recall but wont pay for it to fix it even though it a recall right now that is not expired. im upset 3 dealers wont do it unless then charge me to do it. when toyotal mfg take it to any dealer and they will fix free but no one will do it. toyota mfg needs to make these dealers fix these 2 recalls on this car that can kill me and my passengers and anyone on the road that i could hit by not haivng controll brakes or the hybrid system shuttong completely down and could even kill a pedestrian with these 2 recalls that dealers wont fix but mfg said they need to everyone with these cars i see are having these same problems. need make the toyota mfg and dealers fix these free of charge before more people get killed injuried or cause more accidents ,

Reported

Mar 2026

Incident date

Jun 2025

Mileage

Not provided

Outcome flags

None reported

For the last 14 years, a check engine light has been coming on telling me that I have a fuel canister emissions leak because the canister is cracked. In 2016 2.87 million Toyota Priuses were recalled with the fuel canister crack issue. For unknown reasons Toyota has refused to fix this dangerous issue and has told me that my car was NOT included in the recall. I do not believe Toyota is being honest in their continued denial of this dangerous issue and excluding my 2010 Toyota Prius. This issue has been ongoing since the car was new.

Reported

Mar 2026

Incident date

Mar 2011

Mileage

Not provided

Outcome flags

None reported

While driving my 2010 Toyota Prius, the brake warning lights suddenly illuminated and the brake pedal became soft and unresponsive. Stopping distance increased significantly, and the vehicle required much more pressure to slow down. This created an unsafe situation in traffic and could have easily resulted in a collision. A Toyota dealership diagnosed the issue as a failure of the brake booster and brake booster pump assembly (DTC C1391). This is the same failure Toyota previously acknowledged in Customer Support Program ZJB for 2010–2015 Prius models. My vehicle is experiencing the exact symptoms described in that program, but the support period has expired even though the mileage is well within normal expectations for a hybrid of this age. The sudden loss of braking assist is a serious safety hazard. There was no warning before the failure, and the vehicle became difficult to stop immediately. This appears to be part of a widespread pattern of brake booster failures on this generation of Prius, and the defect poses a risk of crash or injury. I am filing this complaint because this is a safety‑critical component that should not fail under normal use, and many other owners have reported the same issue. A review or investigation may be warranted given the frequency and severity of these failures.

Reported

Mar 2026

Incident date

Mar 2026

Mileage

Not provided

Outcome flags

None reported

In 2019 Toyota repaired my 2010 Prius(120,189 miles) braking system under the ZJB program. The brake cylinder assembly and brake booster pump assembly were replaced as they had a known defect that caused the braking system to fail. As of February 27, 2026 the replaced components are failing again. The auto has approximately 224,000 miles. So the replacement components failed in less miles and time then the original equipment failed which was determined to be faulty. Toyota has declined any assistance in the matter.

Reported

Feb 2026

Incident date

Feb 2026

Mileage

Not provided

Outcome flags

None reported

brake booster that was a recall that toyota said expired in 2020 when i bought the vehicle and the toyotal dealer didnt inform me of the recall to fix it said everything was fine when it was not, i had a dc inverter sensor brake booster issues and now it ills off my 12volt battery every time i put one in lasts about 1 mth, upset dealer never told me this wjhen took in tel me any recalls or probelms, they said none, they lied to me. it kills off my 12volg agm batteries in the last 7 mths been having braking booster issues problems grrr,,, noise all the time when the car is off too, its killing off my hybrid system and my temathetics module is having issues too because of all this and evey battery i put in the car, i want the ntc gov to have toytota recall fix these problems with my car and not expire the recall they had in 2020 cause now i cant fix my car cause of it, i was lied to by the lavista toyota dealer that it has no probblems in 2020 of august when i bought it no recalls and this recall could have been fixed if they would have been honest. unexpire the recall on my brake booster and my dc inverter and sensors probelms killing off my new batteries all the time. call me right away or email me about this, its a urgent matter life or death situation with this car, since the brakes are failing and i have to drive it every day and toyota mfg or dealer wont fix cause says expired recalls cant fix it.

Reported

Feb 2026

Incident date

Jul 2025

Mileage

Not provided

Outcome flags

1 injuries

On November 25, 2025, at approximately 11:45 p.m., our 2010 Toyota Prius experienced a braking system malfunction during normal operation. The brake pedal required significantly increased effort and the vehicle exhibited reduced braking performance, indicating a loss of brake power assist. The vehicle required increased stopping distance, creating an immediate risk of a collision. At the time of the failure, multiple warning indicators illuminated simultaneously, including the brake system warning, ABS warning, check engine light, battery warning, steering warning, tire pressure warning, and vehicle stability control/slip indicator. There were no warning lamps or abnormal symptoms prior to the failure. The failure was determined to involve the brake booster pump assembly, a component responsible for maintaining hydraulic brake assist pressure. This component is known to experience internal accumulator housing degradation, which can allow nitrogen gas migration into the brake fluid and result in partial or complete loss of brake assist. The affected component remains available for inspection. Following the incident, an authorized Toyota dealership inspected the vehicle and reproduced and confirmed the condition. Service records indicate the brake booster pump assembly had previously been replaced under a Toyota safety recall. Despite this prior recall repair, the same component failed again after approximately 41,000 miles of service, demonstrating that the recall remedy was ineffective. As a result of this failure, the vehicle was rendered unsafe to operate. Despite dealer confirmation that the malfunction involved a previously recalled safety component, corrective repairs were declined, with warranty limitations cited rather than addressing the repeat safety-related failure.

Reported

Dec 2025

Incident date

Nov 2025

Mileage

Not provided

Outcome flags

None reported

The color of my Prius 2010 starts with 070, blizzard white pearl. The body started peeling. I have visited Toyota dealer on 12/29/25 with this issue and got to know that this issue is well known but the service campaign was finished around June, 2025. I own this car from 2023, October and visiting Toyota dealers for services regularly, but never thought that this issue was a common issue by Toyota. Also, I have not heard anything from dealer. It is also true that the issue was not severe and even if it was, I was not attentive to that, apologize for my ignorance. However, it seems the issue is getting worse day by day. I did not receive any notice from Toyota about any campaign about this issue. My Toyota dealer recommended me to reach out to Toyota if any courtesy repair can be done on my vehicle. I reached out to Toyota, but seems to me they cannot do much. Can I get any help in this regards?

Reported

Dec 2025

Incident date

Mar 2025

Mileage

Not provided

Outcome flags

None reported

Car keeps throwing a C1391 Abnormal Leak in Accumulator code. The ABS, traction control, and brake lights are all illuminated. Hissing sound from brake pedal. Spongy feel when braking and incredibly soft braking as well, very hazardous to driving and stopping. This is a known issue with the 2010-2015 Prius, and a quick internet search shows thousands of other Prius owners who also have this issue with their vehicles. It’s a safety hazard and can be potentially life threatening. Toyota is not doing anything to rectify this potentially fatal issue that impacts thousands of vehicles and vehicle owners and their families. Estimated cost of repair is upwards of $4,000 and simply not affordable to most consumers. Actions needs to be taken IMMEDIATELY by Toyota to recall these vehicles and fix them.

Reported

Dec 2025

Incident date

Jul 2025

Mileage

Not provided

Outcome flags

None reported

The contact owns a 2010 Toyota Prius. The contact stated that while driving 70 MPH, the vehicle jerked, and the vehicle failed to accelerate as intended while depressing the accelerator pedal. Additionally, the steering wheel seized, and the vehicle stalled. The contact pulled over to the side of the road, opened the hood, and disconnected and reconnected the battery terminals to reboot the vehicle. The contact stated that a yellow triangle warning light and the check engine warning light were illuminated. The message "Check Hybrid System" was displayed. The contact was able to restart the vehicle; however, the vehicle failed to exceed 65 MPH while driving. The ABS warning light was illuminated. The contact took the vehicle to Auto Zone and O'Reilly's; however, no cause for the failure was found. The vehicle was then taken to the dealer. The contact was informed that the failure might be an ABS system failure. The vehicle was not repaired due to the cost. The contact stated that the failure first occurred years ago, and the failure persisted. The manufacturer was not notified of the failure. The failure mileage was unknown.

Reported

Dec 2025

Incident date

Oct 2022

Mileage

Not provided

Outcome flags

None reported

It's a known quality defect covered under CSP ZKG. Toyota has received reports of paint peeling on certain vehicles with the original factory-applied Blizzard Pearl or Super White paint colors. These reports indicate that vehicles with these specific paint colors, applied during the vehicle manufacturing process, may experience paint peeling on exterior metal body panels. The Customer Support Program (CSP) provides coverage for involved vehicles with the original factory Blizzard Pearl or Super White paint. The covered condition may occur when sunlight over time degrades the adhesion between the factory-applied paint primer coat layer and the base metal electrodeposition layer causing the paint to peel from the metal body panel. If the condition is verified, the specific panel affected will be repainted. The problem is that I was not notified for my 2010 Prius II and found out today, November 19th, that the paint peeling issue was covered in a CSP. I contacted the Toyota of Richardson service department, Justin Houge, and he referred me to Toyota Headquarters in Plano, TX. I contacted Toyota Headquarters specialist, Amanda, and she informed me that the CSP expired on June 13, 2025 and to contact the dealership for remedy. Attached are photos of the blizzard pearl paint peeling on all four door panels and driver fender panel.

Reported

Nov 2025

Incident date

Nov 2025

Mileage

Not provided

Outcome flags

None reported

The contact owns 2010 Toyota Prius. The contact stated that while depressing the brake pedal, the ABS, brakes, and the vehicle stability control warning lights were illuminated. An Independent mechanic was contacted. The vehicle was taken to an independent mechanic where it was diagnosed and determined that the brake booster and accumulator needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that the VIN was not included in the recall; however, the recall had expired. The failure mileage was 172,000.

Reported

Nov 2025

Incident date

Oct 2025

Mileage

Not provided

Outcome flags

None reported

One day after arriving home from work, all the sudden my ABS light, BRAKE light and traction control light turned on, my brake pedal being harder to push, and my car making weird humming noises every 5 seconds. Upon taking my 2010 Prius to my trusted repair shop, it was revealed that my break actuator was faulty. I drive on roads that need this part to WORK! Especially in the height of construction going on PA. One of the roads that I take has been milled up and upon driving on that road I nearly swerved onto the side walk 3 times! My breaking has been harsh and with one incident that nearly didn't break in time at all! Doing research and looking into the active investigations on this part, it turns out I am one of possible thousands who are dealing with this issue that has all been tied back to the break actuator being faulty which is very expensive to even repair for something that is obviously a poor design.

Reported

Oct 2025

Incident date

Sep 2025

Mileage

Not provided

Outcome flags

None reported

The brake and pre collision system suddenly fail without warning.

Reported

Oct 2025

Incident date

Sep 2025

Mileage

Not provided

Outcome flags

None reported

Have multiple warning lamps that light up on and off and the brakes in my car get spongy making the braking unsafe. The lights that turn on are the steering/ traction , brake, and abs light. There are multiple complaints online on YouTube from similar issues ongoing and no recall made. My mechanic says it indicates a leak however there is no brake fluid missing and on YouTube there’s work arounds because people keep getting the same message, yet no recall has been made. This can affect steering and cause an accident. Please recall soon. Including YouTube link so you can see all the comments and issues from thousands that don’t know how to report but view to fix temporarily. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Reported

Sep 2025

Incident date

Aug 2025

Mileage

Not provided

Outcome flags

None reported

The ABS, Brake, TSC lights have all appeared on the dash. When running the OBD codes, the error C1391 appears indicating a problem with the ABS pump. When under the dash with the vehicle running, one can hear the abs pump engaging every few seconds which is not normal. After resetting the code. The error quickly pops back up. This is a known problem with this model Prius that Toyota is aware of. Toyota has NOT put out a safety recall for this issue. They refuse to make the repair of a faulty designed abs module, which is obviously a safety concern. The vehicle currently has 128000 miles with no other issues.

Reported

Sep 2025

Incident date

Aug 2025

Mileage

Not provided

Outcome flags

None reported

It is a known problem that Priuses manufactured from 2004 to 2015 have issues with the brake master cylinder and brake booster accumulator. When the vehicle computer recognizes an internal leak (ABS C1391) or other issue in the accumulator pump, it completely disables the regenerative braking system, which significantly reduces braking power. In my case, the problem is intermittent, and the vehicle computer will occasionally clear the code and operate normally. A slight whirring sound can still be heard (indicative of an internal leak), leading me to conclude that the part is still damaged, even when the code clears itself. This continues to affect my and my passengers' safety because the problem comes back with no warning while driving. Many times at highway speeds, the regenerative braking system will shut off while decelerating. This has caused scares and near-accidents. Imagine you are approaching stopped traffic while traveling 65 miles per hour. You press the brake to start slowing down, and while decelerating, the dashboard lights up and the brake pedal goes spongey. Now, you must slam the brake all the way into the firewall to engage the disks and pads exclusively. Aside from the imminent terror of hitting the car in front of you, now you are skidding on the brakes, worried the car behind you will crush the rear. Sooner or later this will cause somebody to get into an accident when a split-second decision cannot to be made quickly enough. The issue is well-known, and a warranty recall was issued, but it does not cover any vehicles over a certain age and mileage. It has been reproduced by my local mechanic and inspected by a Prius specialist, who both quote about $3800 to fully replace and recalibrate the failing parts. There were no indicators of this issue before it happened to my wife and I the first time on the highway. While I am grateful that nobody was injured, the situation could be completely different had the problem occurred just seconds later.

Reported

Aug 2025

Incident date

Jul 2023

Mileage

Not provided

Outcome flags

None reported

Brakes have failed with a DTC C1391 indicating an accumulator leak. The brake booster pump constantly runs. When the DTC is triggered the brake feel becomes suddenly different as regen braking is lost. Appears to be a very common and expensive repair. Toyota has already had recalls and extended repair program for these parts but they are now expired and not covered.

Reported

Aug 2025

Incident date

Aug 2025

Mileage

Not provided

Outcome flags

None reported

The contact owns a 2010 Toyota Prius. The contact stated while driving 45 MPH downhill on a mountain and depressing the accelerator pedal, the pedal travelled down to the floorboard, but the vehicle failed to accelerate as intended. The contact pulled over to the side of the road. The contact stated that upon turning off and restarting the vehicle several times, the vehicle responded as needed. The contact stated that the failure recurred after making a turn at 3-4 MPH downhill. The vehicle was not diagnosed or repaired. The dealer and the manufacturer were notified of the failure. The failure mileage was 194,000.

Reported

Jul 2025

Incident date

May 2025

Mileage

Not provided

Outcome flags

None reported

My 2010 Toyota Prius has had a charcoal fuel canister leak since day one. 2.9 million Prius cars were recalled and Toyota says my car is NOT included in the recall but has the same issue of the other Toyota Prius that were included? Check engine light has never gone off. Upon fueling a strong odor of gasoline is detected and I am very worried about the car catching fire. Toyota needs to be held accountable and forced to fix this safety related problem.

Reported

Jul 2025

Incident date

May 2012

Mileage

Not provided

Outcome flags

None reported

A few weeks ago, while waiting at a traffic light, the brake warning lights (ABS, Emergency brake, Traction control) lights on my 2013 Prius lit up and the brake pedal suddenly becomes much less responsive. I drove carefully back home, and researched online what the problem could be. To my surprise, this seems to be a known problem to Toyota, who had issued a campaign in the past to address this problem (ABS actuator, pump) and to replace the known faulty parts for free, but only for owners who were experiencing a failure at that time. Now the recall has expired, and owners like me who weren't having a problem at the time are stuck in a situation with cars that have a known, dangerous fault, while Toyota refuses to help with the problem anymore. The approximate cost for replace/repair is over $4000. All owners should have been included in the previous campaign, whether they were experiencing a failure or not, during that time period since Toyota knew that these parts are faulty.

Reported

Jul 2025

Incident date

Jun 2025

Mileage

Not provided

Outcome flags

None reported

What component or system failed or malfunctioned, and is it available for inspection upon request? Brake Actuator failed requiring replacement of booster assembly with master cylinder and booster pump assembly How was your safety or the safety of others put at risk? This greatly impacted braking and stopping distance Has the problem been reproduced or confirmed by a dealer or independent service center? Yes, Toyota Dealership Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Yes, Toyota Dealership Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No. These lights appeared after the failure - Brake, ABS, Traction Control

Reported

Jul 2025

Incident date

Jul 2025

Mileage

Not provided

Outcome flags

None reported

The contact owns a 2010 Toyota Prius. The contact stated while driving 45-50 MPH and depressing the brake pedal, the ABS, the traction control, and the check engine warning lights were illuminated. The contact stated that the vehicle experienced reduced braking power and the vehicle failed to respond as needed. The contact stated that upon engaging the brake, the vehicle decelerated, and the contact pulled to the base of an inclined side street, where the vehicle was able to stop. The contact was able to safety park and inspected the vehicle. The contact was able to drive to the residence at slow speeds. The vehicle was taken to the dealer, where it was diagnosed that the brake booster and master cylinder had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 94,000.

Reported

Jun 2025

Incident date

Feb 2024

Mileage

Not provided

Outcome flags

None reported

The contact owns a 2010 Toyota Prius. The contact stated while driving at an undisclosed speed, the message "Hybrid Malfunction" was displayed, and the vehicle lost motive power. The contact was able to pull over to the shoulder of the roadway, where the vehicle was able to restart after detaching and reconnecting the rear battery. The vehicle returned to normal functionality, but the failure became a regular occurrence. No warning lights were illuminated. The vehicle was taken to the dealer, who was unable to determine the cause of the failure. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 120,000.

Reported

Jun 2025

Incident date

Jun 2025

Mileage

Not provided

Outcome flags

None reported

While driving on the freeway the Traction control light, ABS light, Brake System Light and Brake light all came on. Fortunately I haven't had any issues but when I took it to the a dealership I was told that the Brake booster and pump need to be replaced as the master cylinder was leaking into the brake fluid and given an estimate of $3500 for the repair. People online have said that after having this issue the brakes can go out at any time. I am unable to pay for the repairs at the moment so I have to drive with the knowledge of having my brakes going out at any time.

Reported

Jun 2025

Incident date

Apr 2025

Mileage

Not provided

Outcome flags

None reported

Toyota issued a recall with a limited time for Prius brake booster/actuator failures. This issue is known to present brake failures and necessarily place drivers, passengers, and pedestrians at risk in the case of such brake failures. Toyota made no effort to proactively remedy this problem and further neglected customer safety by excluding Priuses with the same manufacturing issue from the recall, under its 10 year 150,000 mile requirement. Whether or not the Priuses have been driven 150,000 miles or 10 years the nature with which the malfunction presents represents a safety for any driver.

Reported

Jun 2025

Incident date

Jun 2025

Mileage

Not provided

Outcome flags

None reported

The contact owns a 2010 Toyota Prius. The contact received notification of NHTSA Campaign Number: 16V487000 (Air Bags); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue and confirmed that parts were not yet available. The manufacturer was made aware of the issue and confirmed that parts were not yet available. The contact had not experienced a failure. Parts distribution disconnect.

Reported

May 2025

Incident date

May 2025

Mileage

Not provided

Outcome flags

None reported

C1391 error, "Abnormal Leak of ACC PRESS". This is a common failure in many prius and requires the replacement of the brake master cylinder and brake accumulator. Toyota has an expired customer support program but no actual recall. Parts were replaced to bring braking system back into working condition.

Reported

May 2025

Incident date

Feb 2025

Mileage

Not provided

Outcome flags

None reported

I purchased a used 2010 Prius on May 1, 2025. On May 5, the car would not turn on. Thought it was the battery. Replaced the battery on May 6. On May 8, the battery was dead again. I jumped the car and tried driving it to the Toyota dealership to have it looked at. On the way a loud beeping sound started and the ABS light came on. I pulled over and noticed the brakes felt strange. After having it towed to Ourisman Toyota, the told me the brake booster was broken causing the battery to drain. The cost for repair is a little over $4,000. This almost half of what I paid for the vehicle.

Reported

May 2025

Incident date

May 2025

Mileage

Not provided

Outcome flags

None reported

Code diagnostic C1391 ABS system. I have replaced this in my previous 2009 Toyota Prius, it has been replaced in this 2010 Toyota Prius, and now needs to be replaced AGAIN in the 2010 Toyota Prius. It’s incredibly dangerous, no warning signs, spongy brakes all of the sudden that barely feel like they’re going to work. It puts not only myself in danger, but others especially when it just happens without warning and all of the lights come on as you are driving and the brakes become extremely wonky.

Reported

May 2025

Incident date

May 2025

Mileage

Not provided

Outcome flags

None reported

We have a 2010 Toyota Prius. All the sudden we got errors/warnings on our dash about ABS and traction lights, and brake light, staying on all the time. Brakes extremely sluggish, and from doing research advised not to drive it. Toyota did a diagnostic test which came up as C1391, bad ABS booster pump and master cylinder. This is a huge safety issue, others have reported brakes completely going out on the highway, and also reporting Toyota is not paying for fixing the issue, and only "certain Priuses" meet their criteria to pay for repairs. There supposedly was a recall at some point but we NEVER received it. I have contacted Toyota America and waiting to hear back. It is going to be very expensive to repair, about $3500-$4500. Yes, it is a 2010, but from what I'm reading and hearing is a MAJOR safety issue and Toyota needs to be held responsible and honor/extend any and all recalls. Again, I'm waiting to hear back from them, but was advised by many other Prius owners to file a complaint with NHTSA.

Reported

May 2025

Incident date

Apr 2025

Mileage

Not provided

Outcome flags

None reported

My brake booster master cylinder and pump assembly went out while driving on the freeway. My brakes became soft and unresponsive, though I was able to exit the freeway without incident. My ABS light, brake light, and traction control lights all came on. The lights have since remained on and my brakes continue to malfunction. My local repair show diagnoses the issue with the diagnostic trouble code: C1391 Back in 2018, before I owned the car, Toyota offered an "extended warranty" to have the parts replaced for free for 10 years or 150,000 miles, whichever came first. I'm past the year threshold but well short of the mileage one. I feel a recall should be made and the repair covered, as this is clearly a safety issue.

Reported

Apr 2025

Incident date

Apr 2025

Mileage

Not provided

Outcome flags

None reported

I was hit in the back by an SUV (my speed=40 mph, the SUV's speed=70 mph). As a result of the impact, my prius flew off the road, hit the roadside railings, and then rolled over 4 times landing upside down. However, NONE of the airbags deployed. This includes the front, side, and curtain airbags. The vehicle was serviced at a Toyota dealership a few years ago where they performed the airbag recall. However, the airbags did not deploy at all. Only sheer luck saved me from death due to the airbag malfunction.

Reported

Apr 2025

Incident date

Jan 2025

Mileage

Not provided

Outcome flags

Crash

While driving through the mountains, the ABS, Brake, and Slippery (traction control) warning lights all suddenly illuminated on the dashboard. This happened without any noticeable trigger, and the warning lights remained on for the duration of the drive. I'm concerned about potential issues with the braking or stability systems and request a diagnostic check to ensure everything is functioning properly. Also I am aware that there was recall on Prius 2010 related to ABS system. My VIN was not included in that but seems like similar issue

Reported

Apr 2025

Incident date

Apr 2025

Mileage

Not provided

Outcome flags

None reported

My ABS system light is on. The Toyota mechanic has determined that it is due to Nitrogen gas from a component of the brake booster pump assembly could leak into the brake fluid. As nitrogen is released into the brake fluid, the brake pedal may have reduced hydraulic pressure. Under certain circumstances, this condition could affect stopping distance and increase the risk of a crash. Toyota recalled model year 2010 Prius vehicles manufactured March 31, 2009, through October 9, 2009. I took my Prius to Toyota to fix this ABS recall problems but they are refusing to fix the problem for free. They are charging me $4000 to fix it.

Reported

Apr 2025

Incident date

Apr 2025

Mileage

Not provided

Outcome flags

None reported

ABS, traction, and brake warning lights came on. No OBD code reading. Mechanic says needs brake booster pump; brake booster master cylinder. Theoretically mine were serviced but no way for me to actually verify it happened on the recall. Vehicle located in Kamuela, Hawaii.

Reported

Apr 2025

Incident date

Dec 2024

Mileage

Not provided

Outcome flags

None reported

- Brake system failure - Safety risk due to longer stopping distance - Problem was reproduced and confirmed by two repair shops - Components were inspected by repair shop - Several brake warning lights were ON on dashboard AFTER failure occurred. Toyota recalled 2010 Prius vehicles for Brake Booster and Brake Booster Pump assembly failures. Recall code D0H. Toyota claims that the replacement parts are fixed for the gasket leak issue. Toyota replaced these parts on my car in 2013 as part of the recall. The replaced parts labeling are verified to be the claimed fixed ones. But only about 62,000 miles after the D0H repairs (odometer at 81,400 miles) the parts failed again on March 20, 2015. I do not put many miles on my cars. Toyota has put a maximum repair date for this issue knowing failures keep re-occurring (No repairs supported after 2019). Toyota has not fixed this issue given the repeat failures. Repairs for this issue is extremely expensive at more than $4000 at independent shop (parts and labor)

Reported

Mar 2025

Incident date

Mar 2025

Mileage

Not provided

Outcome flags

None reported

I am writing to express my concern regarding an issue with the PCS System dash lights on my 2010 Toyota Prius. I recently became aware of problems related to the brake booster system, which I understand have been addressed through recalls or warranty extensions on certain models. I believe that the issue I am experiencing should be covered under warranty, and I kindly request your assistance in resolving this matter.

Reported

Mar 2025

Incident date

Mar 2025

Mileage

Not provided

Outcome flags

None reported

odometer error

Reported

Feb 2025

Incident date

Sep 2024

Mileage

Not provided

Outcome flags

None reported

I drove the car to my destination without any issues. An hour later, when I restarted the vehicle to leave, the following dashboard lights were on (slip indicator, ABS warning light, and brake system warning light). When I drove the vehicle, the brakes had diminished stopping power. It took farther for the vehicle to come to a full stop when applying the brakes. When we had it checked by the Toyota dealer we were informed that there was an abnormal leak in the accumulator assembly (system diagnostic code C1391) and it would need brake booster/master cylinder assembly with accumulator pump replacement.

Reported

Feb 2025

Incident date

Mar 2024

Mileage

Not provided

Outcome flags

None reported

Brake booster, brake accuater went out even after the recall. Dealership said they could do nothing to help

Reported

Feb 2025

Incident date

Feb 2025

Mileage

Not provided

Outcome flags

None reported

While driving at a high speed in the left lane of a 2 lane interstate a car in the right lane merged into me. Luckily I was able to brake in time to avoid a collision, unfortunately the sudden braking at a high speed caused my car to loose all control. Upon braking my front tires lost all traction and shifted my car to the right, I remained horizontal sliding across the highway for an unrecognized distance (my guess is 10-20 meters), before shifting another 90 degrees to the right leaving me backwards. At this point I had shifted across both lanes and the emergency lane, I was backwards in a grass border on the right side of the interstate. If this had been any other sort of barrier I may not have Lived. This incident has not been reproduced or confirmed by a dealer or independent service center. The vehicle had recently had its worn brake components replaced in response to a similar incident happening, which I first attributed to worn brakes— this theory was supported by the brake technician prior to service. I have had a tire pressure light on since I purchased the car, but this was explained to me as a malfunctioned TPS.

Reported

Feb 2025

Incident date

Jan 2025

Mileage

Not provided

Outcome flags

None reported

Dear NHTSA Team, I am filing a safety complaint regarding my 2010 Toyota Prius (VIN: [XXX] ) due to ongoing brake system failures. My vehicle is affected by Safety Recall D0H (Brake Booster Pump Assembly – Accumulator), but Toyota refuses to replace all necessary components for a proper repair. Issue Summary: •My brakes have intermittently failed, requiring excessive pedal pressure and causing delayed stopping, putting me at serious risk. •I took my car to Toyota on Edens for the recall repair, where Service Advisor David confirmed that the brake booster and accumulator should be replaced together. •However, Toyota will only cover the accumulator under Recall D0H, despite the brake booster being critical for safety. •My vehicle has Diagnostic Trouble Code (DTC) C1391, indicating an internal leak in the braking system, but Toyota refuses to cover the booster replacement. Toyota’s Response: •I contacted Jessica from Toyota’s Customer Experience Center (Case Number: [XXX]). •Toyota refuses to replace the booster under the recall, leaving me responsible for the cost, even though the dealership confirmed it’s necessary. •This decision leaves my car in an unsafe condition even after the recall repair. Request for NHTSA Action: 1.Investigate the safety risks related to this recall and the necessity of replacing both the booster and accumulator together. 2.Ensure Toyota properly covers all necessary brake repairs for affected vehicles. 3.Expand or modify Recall D0H to include the brake booster, as it directly affects braking performance. I urge NHTSA to take action before this defect leads to accidents or injuries. I am available to provide additional information as needed. Thank you for your time and attention to this urgent matter. Sincerely, [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Reported

Jan 2025

Incident date

Jan 2025

Mileage

Not provided

Outcome flags

None reported

I own a 2010 Toyota Prius hybrid 4 door sedan. I am the second owner of the vehicle. I purchased it in 2018 from a used car dealer. The vehicle ran well up until 2022 where a “check hybrid warning would appear on the dashboard along with a yellow triangle and service engine light would come on and the vehicle accelerator would not respond and the car would have to glide to the side of the parkway. This problem would happen when the car speed is between 60-70mph. It is very dangerous to lose power on the highway because many times there is no where to pull over. In 2024 I changed the water pump because the fault code on the cars built in diagnostic code read error “P216B” which is the cars electrical water pump signal. I researched it on google and a lot of 2010 Prius owners are complaining of the same thing. Also the changed water pump from April 2024 died again in January 2025. It is very scary that the cars accelerator pedal goes unresponsive and all the fault lights come on. My vehicle has 155,000 miles runs great and my family loves the 40mpg it gets. However, this stalling problem is being ignored by Toyota and could lead to a fatal car accident if not recalled by the manufacturer. To conclude, I would like for your office to possibly conduct an investigation with the 2010 toyota Prius hybrid for this ongoing problem that the company is ignoring. This is a serious issue and can possibly lead to a fatal accident. THANK YOU FOR HEARING MY COMPLAINT AGAINST TOYOTA.

Reported

Jan 2025

Incident date

Jan 2025

Mileage

Not provided

Outcome flags

None reported

Abs lights on, traction light on .Actuator running cicle constantly . Breaks felt spongy

Reported

Jan 2025

Incident date

Jan 2025

Mileage

Not provided

Outcome flags

None reported

Break booster fail. Will cause the breaks to fail. There was a voluntary recall on these but I never recieveed the letter in the mail. Thr break booster failed after the voluntary recall was up. Toyota said they cannot help with this. Other prius owners i talked to have the same issue with their 2010 prius break boosters and also did not get the letter in the mail.

Reported

Jan 2025

Incident date

Jan 2025

Mileage

Not provided

Outcome flags

None reported

My car, a 2010 Toyota Prius, Level V has about 161,000 miles on it, and I have driven about 140K of those miles over the last 13 years. I have traveled around the DC/Maryland area and also taken the car on long trips. The car has been reliable, safe, and predictable... EXCEPT in one place/instance. I have probably driven a dozen times or more to the BWI airport from my home in Chevy Chase. On the return drive on [XXX], as I drive towards an overpass that is just before the [XXX] exit, my Prius goes into "Emergency Approaching Collision" mode. The brakes automatically forcibly apply, the seatbelt/lap harness grab me, and there is an emergency beeping from the system. The first time this happened... probably 10 years ago, it was very startling. My car was traveling about 60-65 mph. Luckily, there were no cars behind me... and I remained calm enough not to overreact. I was so startled that I needed to pull over to regain my composure. In one of the numerous other cases on this happening, my wife was in the car and she basically wanted me to sell the car because she felt it was unsafe. Because I am aware of the situation with my car, I always am cautious when I am driving towards the [XXX] exit. I drive slower, watch carefully for surrounding vehicles beside or behind me. But even yesterday, I was driving very slowly (approximately 35 mph). While I did not feel the system take aggressive avoidance/safety actions, still the warning beeps did take place... a little unnerving, but I had come to expect a problem at that site. In any event, I did want to bring the matter to your agency. Sincerely, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Reported

Jan 2025

Incident date

Jan 2025

Mileage

Not provided

Outcome flags

None reported

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2010-2014 Toyota Prius and 2012-2014 Toyota Prius V vehicles. Excessive voltage in the Intelligent Power Module (IPM) within the inverter may cause the hybrid system to shut down, causing the vehicle to stall while being driven.

Risk: If the hybrid system shuts down unexpectedly, it can increase the risk of a crash.

Remedy: Toyota will notify owners, and dealers will update the software for the motor/generator control electronic control unit (ECU) and the hybrid control ECU as necessary, free of charge. The recall began January 22, 2019. Owners may contact Toyota customer service at 1-888-270-9371. Toyota's number for this recall is J0V. Note: The software updates in this recall are needed even if the vehicle had the software previously updated under recalls 14V-053 or 15V-449.

Southeast Toyota Distributors, LLC (SET) is recalling certain 2005-2011 4Runner, Highlander, Sequoia, and Sienna, 2005-2010 Avalon and Tundra, 2006-2008 Camry Solara, 2006-2010 Highlander hybrid, 2006-2011 Rav4 and Tacoma, 2007-2010 FJ Cruiser, 2007-2011 Camry hybrid, 2009-2010 Venza, 2010-2012 Prius, 1988-1990 and 2005-2010 Camry, and 1989 and 2009-2010 Corolla vehicles equipped with aftermarket accessory seat heaters with a copper strand heating element. The electrical wiring in the seat heaters may be damaged when the seat cushion is compressed.

Risk: If damaged, the copper strand heating element may short circuit, increasing the risk of a fire.

Remedy: SET will notify owners, and dealers will disconnect the seat heaters, free of charge, and refund the purchase price of the seat heater accessory. The recall began on July 14, 2016. Owners may contact SET customer service at 1-866-405-4226. SET number for this recall is SET16B.

Toyota is recalling certain model year 2010 through 2014 Prius vehicles. In the affected vehicles, the Intelligent Power Module (IPM) inside the inverter module (a component of the hybrid system) contains transistors that may become damaged from high operating temperatures. If this occurs, various warning lamps will be illuminated on the instrument panel and the vehicle will have reduced power allowing it to only drive a short distance.

Risk: The vehicle may enter a fail-safe/limp-home mode that limits the drivability of the vehicle. The hybrid system could also shut down completely resulting in a vehicle stall, increasing the risk of a crash.

Remedy: Toyota will notify owners and dealers will update the software for both the motor/generator control electronic control unit (ECU) and the hybrid control ECU, free of charge. If an owner experiences a failure of the inverter before the vehicle receives updated software, the dealer will repair or replace the inverter assembly with a new one at no charge. The recall began on March 21, 2014. Owners may contact Toyota at 1-800-331-4331.

Toyota is recalling certain model year 2010 Prius vehicles manufactured March 31, 2009, through October 9, 2009; and model year 2010 Lexus HS250h vehicles manufactured June 19, 2009, through October 9, 2009. Nitrogen gas from a component of the brake booster pump assembly could leak into the brake fluid.

Risk: As nitrogen is released into the brake fluid, the brake pedal may have reduced hydraulic pressure. Under certain circumstances, this condition could affect stopping distance and increase the risk of a crash.

Remedy: Toyota will notify owners, and dealers will replace the affected brake booster pump assemblies. The recall began on August 7, 2013. Owners may contact Toyota at 1-800-331-4331.

TOYOTA IS RECALLING CERTAIN MODEL YEAR 2010 TOYOTA PRIUS AND LEXUS HS250H PASSENGER VEHICLES. CUSTOMERS HAVE EXPERIENCED INCONSISTENT BRAKE FEEL AFTER ABS ACTUATION DURING SLOW AND STEADY APPLICATION OF THE BRAKES ON ROUGH OR SLICK ROAD SURFACES. STOPPING DISTANCES MAY BE INCREASED COMPARED WITH A CUSTOMER'S EXPECTATION FOR A GIVEN PEDAL FORCE.

Risk: VEHICLE STOPPING DISTANCES MAY INCREASE RELATIVE TO A CUSTOMER'S EXPECTATION INCREASING THE RISK OF A CRASH.

Remedy: DEALERS WILL REWRITE THE PROGRAMMING OF THE ABS CONTROL UNIT FREE OF CHARGE. THE SAFETY RECALL BEGAN ON MARCH 3, 2010, AND IS EXPECTED TO BE COMPLETED IN LATE MARCH 2010. OWNERS MAY CONTACT TOYOTA AT 1-800-331-4331 AND LEXUS AT 1-800-255-3987.

GULF STATES TOYOTA IS RECALLING CERTAIN MODEL YEAR 2005-2010 VEHICLES FOR FAILING TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 110, "TIRE SELECTION AND RIMS." THESE VEHICLES WERE SOLD BETWEEN SEPTEMBER 1, 2005 AND JUNE 2, 2008 WITHOUT THE REQUISITE LOAD CARRYING CAPACITY MODIFICATION LABELS.

Risk: THIS DOES NOT MEET THE STANDARD REQUIREMENTS.

Remedy: DEALERS WILL MAIL TO CONSUMERS THE CORRECTED LABEL OR THE CUSTOMER WILL HAVE THE OPTION FOR DEALERS TO INSTALL THE LABEL FREE OF CHARGE. DEALERS WILL ALSO CORRECT THE OWNER'S MANUAL. THE SAFETY RECALL BEGAN ON MAY 27, 2010. OWNERS MAY CONTACT GULF STATES TOYOTA AT 713-580-3300.

SOUTHEAST TOYOTA IS RECALLING CERTAIN MODEL YEAR 2005-2011 PASSENGER VEHICLES FOR FAILING TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 110, "TIRE SELECTION AND RIMS." THESE VEHICLES WERE SOLD WITHOUT THE REQUISITE LOAD CARRYING CAPACITY MODIFICATION LABELS.

Risk: A DRIVER MAY OVERLOAD A VEHICLE WHICH MAY INCREASE THE RISK OF A CRASH.

Remedy: DEALERS WILL MAIL TO CONSUMERS THE CORRECTED LABEL OR THE CUSTOMER WILL HAVE THE OPTION FOR DEALERS TO INSTALL THE LABEL FREE OF CHARGE. THE SAFETY RECALL BEGAN ON MAY 27, 2010. OWNERS MAY CONTACT SOUTHEAST TOYOTA AT 1-800-301-6859.

Southeast Toyota Distributors, LLC (SET) is recalling certain models interspersed through model years 2009 through 2013 as follows: model year 2009-2012 Tacoma, 4Runner, Camry, Camry Hybrid, Prius, and RAV4; model year 2009-2010 Avalon, FJ Cruiser, and Highlander Hybrid; model year 2010-2013 model year Corolla, Sienna and Tundra; model year 2009-2013 Highlander and Venza; model year 2012 Prius V; and model year 2010-2012 Sequoia. During modification by SET to include accessories such as leather seat covers, seat heaters or headrest DVD systems, these vehicles may not have had the passenger seat occupant sensing system calibration tested. Without passing the calibration test, the occupant sensing system may not operate as designed.

Risk: If the front passenger seat occupant sensing system is out of calibration, the front passenger airbags may not deploy or they may deploy inappropriately for the passenger's size and position. This could increase the risk of personal injury during the event of a vehicle crash necessitating airbag deployment.

Remedy: Southeast Toyota will notify owners, and dealers will test the sensitivity of the occupant detection sensors, and recalibrate them as necessary. The recall began on March 21, 2013. Owners may contact Southeast Toyota at 1-800-301-6859.

Southeast Toyota Distributors, LLC (SET) is recalling certain model year 2010-2011 Prius and Corolla, 2009-2011 Venza, 2006-2010 Avalon, 2007-2010 FJ Cruiser, 2005-2011 Sienna and Sequoia, 2006-2011 Tacoma 4x2 and 4x4, Camry, Highlander, Tundra 4x2 and 4x4, and 2007-2011 Rav4 and 4Runner. The affected vehicles may experience compression of the seat cushion which may damage the seat heater wiring.

Risk: Damage to the seat heater wiring could cause the wires to short, increasing the risk of the seat burning and causing personal injury to the occupant.

Remedy: SET will notify owners, and dealers will disconnect the heaters with copper strand heating elements and refund the purchase price of the seat heater accessory, free of charge. The recall is expected to began in January 2015. Owners may contact SET customer service at 1-866-405-4226.

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain model year 2010-2012 Toyota Prius, 2010 and 2012 Toyota Prius Plug-in Hybrid, and 2011-2012 Lexus CT200h vehicles. A weld in the curtain shield air bag inflator may crack causing one or both portions of the inflator to eject into the passenger cabin.

Risk: If either portion of the curtain shield air bag inflator ejects into the passenger cabin, there is an increased risk of injury to vehicle occupants.

Remedy: Toyota will notify owners, and dealers will install retention brackets to the curtain shield air bags, free of charge. The recall began on October 17, 2016. Owners may contact Toyota Customer Service Department at 1-800-331-4331. Toyota's number for this recall is Toyota G0U, and Lexus GLJ.