2014 Toyota Prius

My car experienced a failing brake actuator/accumulator. The first sign was the ABS and break lights accompanied by a whoosing sound. The issue causes intermittent system wide break failure and renders the car undriveable. Toyota had an extended warranty for this issue but that offer was closed by the time my car had the failure even though it was still under 150,000 miles. I believe this is a significant safety issue and should rise to the level of a recall by Toyota.

Reported

Jul 2026

Incident date

May 2026

Mileage

Not provided

Outcome flags

None reported

Brake actuator had been making noises and it finally stopped working on 7/14/26. Thankfully my car was and stopped and parked. The car has 137k miles on it, one owner and no explanation of what caused this. There were no accidents, abuse, or failure to maintenance.

Reported

Jul 2026

Incident date

Jul 2026

Mileage

Not provided

Outcome flags

None reported

The traction control, abs, and emergency brake light came on. We checked and the code produced was C1391. There’s a humming noise every 10 or so seconds when idle. The humming noise is also present when braking. We did some research and this appears to be an issue with Toyota Prius. We called the dealership and were informed that this was not a known issue. Thank you.

Reported

Jul 2026

Incident date

Jun 2026

Mileage

Not provided

Outcome flags

None reported

Car is at less than 105k miles and yet brake actuator is failing.

Reported

Jun 2026

Incident date

May 2026

Mileage

Not provided

Outcome flags

None reported

ABS, traction control, brake system, and brake lights turned on while driving. Took the car to the mechanic and pulled the code C1391. It seems from other complaints to NHTSA that it is a common issue and quite dangerous, meaning the brake system is failing.

Reported

Jun 2026

Incident date

May 2026

Mileage

Not provided

Outcome flags

None reported

ABS, brake, and traction warning lights came on. Loss of power brakes/limited manual brake. Extended warranty/customer service outreach did not apply. Car is at 120,000 miles and almost 12 years.

Reported

May 2026

Incident date

May 2026

Mileage

Not provided

Outcome flags

None reported

When the brake is applied, the vehicle accelerates for a fraction of a second before slowing down. I have experienced this when the vehicle is moving slowly, such as in a parking lot.

Reported

May 2026

Incident date

Mar 2026

Mileage

Not provided

Outcome flags

None reported

On April 5, 2026, while driving downhill around a corner in my 2014 Toyota Prius, the brake booster and brake booster pump assembly failed without any prior warning. When I pressed the brake pedal the car did not slow down and instead appeared to accelerate due to a complete loss of braking assist. I was unable to stop the vehicle normally and had to rely on gravity and coasting to slow down, creating a serious risk of collision. There were no warning signs prior to the failure. Immediately after the incident, three warning lights illuminated on the dashboard: the BRAKE light, the ABS light, and the VSC (vehicle stability control) light, which have remained on since. The vehicle was taken to DARCARS Toyota Baltimore, 6007 Eastern Ave, Baltimore, MD 21224, where the failure was confirmed on April 15, 2026. Technician Victor Lawson diagnosed diagnostic trouble code C1391, which is the exact qualifying code listed under Toyota's Customer Support Program ZJB for brake booster and brake booster pump assembly failure (RO# XXX). The vehicle remains at the dealership and is available for inspection. Toyota corporate was contacted and opened case number XXX but declined to cover the repair despite this being a documented issue that Toyota has publicly acknowledged. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Reported

Apr 2026

Incident date

Apr 2026

Mileage

Not provided

Outcome flags

None reported

While driving, three warning lights suddenly appeared on the dashboard . Abs warning, traction light, and break warning light At the same time, the brake pedal became very hard to press, and the vehicle did not slow down as expected. This caused a significant increase in stopping distance, and I nearly rear-ended the vehicle in front of me. The issue appears to involve the braking system and created an immediate safety risk. No prior warning signs were noticed before this incident. The vehicle has not yet been inspected but is available for inspection upon request.

Reported

Apr 2026

Incident date

Apr 2026

Mileage

Not provided

Outcome flags

None reported

Subject: Brake Booster/Pump Assembly Failure – Toyota Program ZJB / 23TE07 Description of Incident: I am reporting a failure of the brake booster and pump assembly on my 3rd Generation Prius (82,000 miles). While the vehicle is 11.3 years old, it is well under the 150,000-mile threshold of Toyota’s Customer Support Program ZJB. The brake pump began cycling every 13 seconds, indicating an internal pressure leak in the accumulator. This is a documented precursor to a total loss of power-assist braking. Despite the clear mechanical failure, no warning lamps or Diagnostic Trouble Codes (DTCs) were triggered, creating a safety hazard where the system could fail without prior electronic notification. Repair and Cost Details: Because the vehicle was 1.3 years past the arbitrary 10-year "Secondary Coverage" window, I was forced to pay $3,461.18 out-of-pocket for a known manufacturing defect. I would like to highlight a discrepancy in labor billing: while Toyota’s own technical bulletins (ZJB/23TE07) state the repair should take approximately 5.3 hours, the dealership charged 8.9 hours of labor for the same procedure. Safety Concern: By limiting coverage to 10 years, Toyota has left many low-mileage owners with a critical safety defect that degrades over time regardless of mileage. I request that the NHTSA transition this from a "Customer Support Program" to a formal Safety Recall to ensure all affected vehicles are repaired and owners are reimbursed, regardless of the vehicle's age.

Reported

Mar 2026

Incident date

Mar 2026

Mileage

Not provided

Outcome flags

None reported

the cylinder head gasket blew because of the poor design of the intake manifold and the EGR system. There are updated parts to fix this issue, but there was no recall. This poor design led to the vehicle having "the Death Knock." It started doing this knock on my trip driving my daughter to college. The engine could have seized in traffic on the way to [XXX] from [XXX] . No warning lights came on telling me there was an issue. The vehicle is being taken apart now to see if my connecting rods were bent from the coolant entering the combustion chamber. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Reported

Mar 2026

Incident date

Feb 2026

Mileage

Not provided

Outcome flags

None reported

The contact owns a 2014 Toyota Prius. The contact stated that while driving at an undisclosed speed, the vehicle failed to slow down as intended with the brake pedal depressed. The ABS warning light was occasionally illuminated. The vehicle was pulled over to the shoulder of the roadway and restarted. The vehicle was taken to a local independent mechanic, where it was diagnosed, and determined that the brake master cylinder, brake booster, and brake lines needed to be replaced. The local dealer was contacted; however, the vehicle was not diagnosed or repaired. Upon further investigation, the contact related the failure to an undisclosed recall; however, the VIN was not included in the recall. The manufacturer was notified of the failure. The contact was referred to the NHTSA Hotline for assistance. The failure mileage was approximately 152,000.

Reported

Mar 2026

Incident date

Mar 2026

Mileage

Not provided

Outcome flags

None reported

Vehicle: 2014 Toyota Prius v Hybrid Mileage: 79,000 miles The vehicle experienced sudden failure of the brake booster / brake accumulator system. Multiple warning lights appeared including ABS, traction control, and the red brake warning light. Diagnostic code C1391 was retrieved. The brake pedal became soft/spongy and the electric brake pump began cycling frequently. Braking performance felt reduced and inconsistent, creating a potential safety risk. This vehicle has very low mileage (79,000 miles) and has been well maintained. The failure appears to be related to a known defect in the Prius braking system. Toyota previously issued Customer Support Program 20TE07 addressing brake booster and pump failures on 2012–2014 Prius v vehicles. Despite this known issue, the repair is not being covered and the cost quoted is several thousand dollars. A failure of the brake booster/accumulator system significantly affects braking performance and should not occur at this mileage. This appears to be a widespread issue affecting Prius vehicles and represents a potential safety defect involving the braking system.

Reported

Mar 2026

Incident date

Mar 2026

Mileage

Not provided

Outcome flags

None reported

Head gasket failure. No check, engine, light or warning. My car was very well maintained regularly. After research, I found this to be a very common problem. Yes it is available for inspection. Upon request. The problem was confirmed by chemical test, ignition vapors going into engine coolant. Other symptoms were misfiring on cylinder two and cylinder four. Severe engine knocking.

Reported

Mar 2026

Incident date

Mar 2026

Mileage

Not provided

Outcome flags

None reported

The brake booster/accumulator failed on my vehicle. This part was a common failure during the 2010-2015 production run so much so that Toyota extended coverage to replace. Mine failed recently beyond the warranty extension of 10 years/150k miles. My vehicle has only 108k miles and is 15 months beyond warranty. Toyota Corporate will not replace this vital part, despite the fact it was a defective design. I can’t drive it any longer since I don’t have the $4000 to make repair. Toyota Corporate has shown little concern despite this critical safety defect.

Reported

Feb 2026

Incident date

Feb 2026

Mileage

Not provided

Outcome flags

None reported

The slip notification, abs, and brake lights turned on while driving on the highway. The brakes then became very stiff and the vehicle did not brake as fast or as well as it normally does without the lights.

Reported

Feb 2026

Incident date

Feb 2026

Mileage

Not provided

Outcome flags

None reported

2014 Prius HB with 135k miles , onboard system warning lights for Brakes, ABS system, TPMS and Traction Ctrl all came one suddenly. Brake losing pressure while vehicle making strange noise under front driver side

Reported

Jan 2026

Incident date

Jan 2026

Mileage

Not provided

Outcome flags

None reported

On Jan 5, 2026 I was driving locally at about 40-45 mph. All of a sudden 3 indicator lights came on ABS, Brake, and Brake System Warning Light. There were no noises, but the brakes felt different. They did stop when needed. I left space between myself and others just in case, did not want an accident. Called my regular mechanic. They advised to not drive the car, but to bring it into the shop at 8am the following day. On Jan 6th, the mechanic stated it was beyond their expertise. It was towed to the local Toyota Dealer for repairs. It ended up being the Brake Booster and Pump. Upon investigation online, we saw this was a recall, but we were not notified by Toyota.

Reported

Jan 2026

Incident date

Jan 2026

Mileage

Not provided

Outcome flags

None reported

I was driving on the freeway, and a few lights(including ABS, brake lights) all came on and a beeping noise started, as i immediately lost complete control of my brakes! That God it was late, and no cars were in front of me. The car slowed down as I removed my foot of the gas right away. I tried to pull over as soon as I heard the lights, and that’s when I realized my brakes were completely gone! I was able to stop after about two miles; car stop on its own as it slowed down. Apparently, this was a major known issue and had warranty up to 150k miles. At the time of the incident, my car had about 165k miles. I had the car for years, and no one at the dealer ever mentioned anything about this or even tried to make me aware of it! I called the Toyota dealer and corporate number several times and they declined providing me with any help at all! This caused me fear and traume because I never thought this was possible! It could’ve ended my life and the life of people around me if there were any cars in sight! The problem has been confirmed by a reputable mechanic! He did the repairs! He also called the Toyota dealer and corporate and attempted collecting anything since he found out about the warranty and common issue. They also denied help. No lights were on at all before this incident happened! It all came at once! I even have all records of monthly/ bimonthly complete inspections at the dealer with everything normal on the results!

Reported

Jan 2026

Incident date

Dec 2025

Mileage

Not provided

Outcome flags

None reported

Hello, We were informed that the vehicle paint had a recall due to paint chipping. Unfortunately we never received the notice and was unaware until after the recall program had ended. We are contacting you now to see how we can address this issue as our vehicle paint is chipping all around the car.

Reported

Jan 2026

Incident date

Feb 2025

Mileage

Not provided

Outcome flags

None reported

The brake booster system (electric brake booster pump) in my 2014 Toyota Prius has been making frequent, audible cycling noises inside the cabin, particularly during cold weather. I have also noticed a faint odor outside the vehicle that seems related to electrical movement. No ABS or brake warning lights have illuminated, but the cycling pump may indicate increased stress on the brake system. The issue has not yet been diagnosed or confirmed by a dealer or independent service center. The problem has not caused a loss of braking ability to date, but the unusual noises and electrical odor suggest potential risk if the booster were to fail completely. No recall or customer support program currently covers this issue. The component is part of the vehicle’s brake system and would be available for inspection by a dealer or manufacturer upon request. Toyota has offered no help or possibility of Goodwill assistance inspection for this issue.

Reported

Jan 2026

Incident date

Jan 2026

Mileage

Not provided

Outcome flags

None reported

The brake system malfunctioned suddenly. While driving and while stopped, the brake pedal became very hard and braking behavior became unpredictable. The vehicle sometimes brakes aggressively and other times requires excessive pedal force to stop. The ABS and BRAKE warning lights illuminated. The vehicle no longer provides normal braking assistance. This issue is related to a failure of the brake actuator / brake booster, which is a known issue affecting Toyota Prius models from 2010 to 2015. This defect creates a serious safety risk, as braking performance is inconsistent and may increase stopping distance or cause loss of control during emergency braking situations. The vehicle has not been repaired yet because the cost is very high and the manufacturer has declined assistance despite this being a known safety-related defect.

Reported

Dec 2025

Incident date

Dec 2025

Mileage

Not provided

Outcome flags

None reported

misfire code along with rough starts/light load. T-SB-0116-15

Reported

Dec 2025

Incident date

Dec 2025

Mileage

Not provided

Outcome flags

None reported

ABS complete and total failure while driving.

Reported

Oct 2025

Incident date

Oct 2025

Mileage

Not provided

Outcome flags

None reported

The ADS, traction light, and brake light all came on at once. Apparently this is a known problem with these cars and Toyota was fixing them for awhile but has stopped. No brake issues were reported when I brought it in for inspection in 2023. I never received any mail stating that this was a know defect and I needed to bring my car in to get it inspected. It's obvious to me that Toyota designed a defective part that impacts safety, and is forcing the owner to bear the cost of the fix by creating parameters that can never be met before the warranty expires.

Reported

Sep 2025

Incident date

Sep 2025

Mileage

Not provided

Outcome flags

None reported

My brakes consistently lock and the car lunges forward. Driving down the highway I tapped my brakes and they didn’t work. I lost traction in the brakes. I had no control over the car or speed. I’m scared everyday I have to drive it. This is extremely dangerous and I've seen this comment often with this vehicle. Toyota said they had an extended warranty for this but it expired. I never received any mail or phone calls stating that this was a known defect. They say they can’t do anything now and are quoting me over $3000 to fix it.

Reported

Sep 2025

Incident date

Sep 2025

Mileage

Not provided

Outcome flags

None reported

The brake actuator failed, it can be available for inspection anytime. My ABS light, brake light, and traction control lights all came on to indicate the failure. Since the hybrid engine requires the breaking system to recharge, failure of this part will eventually lead you to be stranded if it isn’t functional. Additionally, the responsiveness of the breaks makes driving at higher speeds a lot riskier. Toyota offered an "extended warranty" to have the parts replaced for free for 10 years or 150,000 miles, whichever came first. My make is 2014, at only 89,000 miles.

Reported

Aug 2025

Incident date

Aug 2025

Mileage

Not provided

Outcome flags

None reported

The contact owns a 2014 Toyota Prius. The contact stated that the ABS and the traction control warning lights were illuminated. The vehicle was taken to the dealer to be diagnosed, and the contact was informed that the brake master cylinder needed to be replaced. The vehicle was not repaired. The vehicle was taken to a certified mechanic and was diagnosed, and it was determined that the brake booster had failed and needed to be replaced. The vehicle was repaired; however, one day later, both warning lights returned. The vehicle was returned to the mechanic and air was blown into the hydraulic valves and the other valves were cleaned; however, the failure persisted. The manufacturer was not informed of the failure. The failure mileage was approximately 150,000.

Reported

Aug 2025

Incident date

Mar 2025

Mileage

Not provided

Outcome flags

None reported

Apparently Toyota knows of a recurring problem with the brake actuator. I took my Toyota Prius to the dealer for an unrelated recall issue that they repaired and I asked them what the sound was that I kept hearing every 10 seconds or so. The told me it is the brake actuator, but did not seem concerned at all that I get it repaired right away. They did quote me a very high price to have it fixed by them. I have chosen to take it to my mechanic for repair. In the mean time, I decided to research this on the internet and discovered that it is a known problem by Toyota and there is a class action suite filed on them. I want Toyota to pay to have it fixed! I fear for my life and lives of others with the same issue.

Reported

Aug 2025

Incident date

Aug 2025

Mileage

Not provided

Outcome flags

None reported

See Attached Letter

Reported

Jul 2025

Incident date

May 2025

Mileage

Not provided

Outcome flags

None reported

The contact owns a 2014 Toyota Prius Plug-In-Hybrid. The contact stated while driving 65 MPH, the brake pedal was depressed; however, the vehicle failed to stop as intended. The contact stated that the brake pedal had to be depressed abnormally hard to stop the vehicle. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure. The contact was informed that the VIN was not under recall. The failure mileage was unknown.

Reported

Dec 2024

Incident date

Nov 2024

Mileage

Not provided

Outcome flags

None reported

I WENT TO SEVERAL MECHANICS AND GOT THE SAME ISSUE CONFIRMED. IT IS A BOOSTER BRAKE SYSTEM ISSUE. I CALLED CONSUMER ADVOCATES AND THEY SAID THE NOTICE WENT OUT IN 2019 AND SINCE THEN EXPIRED. THEREFORE DEALERSHIP IS NOT GOING TO REPAIR THE DEFECT. I RECEIVED NO SUCH NOTICE. WHEN I CONTENDED THAT THIS IS A SAFETY ISSUE AND SHOULD IMMEDIATELY BE HANDLED AND MY CAR HAS 80,000 MILES ON IT AND IT HAS NOT EVEN BEEN 10 YEARS THEY REFUSED. FROM MY RESEARCH I SEE THAT IT IS A WIDE SPREAD ISSUE WITH THE BREAK BOOSTER AND DEFFINATELY WARRANTS A RECALL. I AM DISABLED AND HAVE MANY MEDICAL ISSUES I NEED MONEY FOR AND CAN NOT AFFORD $3000 MANUFACTURING FAULT DEFECT IS NOT MY RESPONSIBILITY.

Reported

Nov 2024

Incident date

Aug 2024

Mileage

Not provided

Outcome flags

None reported

Complete failure of ABS system. Error code C1391. This is a well-known problem with Gen 2 and 3 Priuses.

Reported

Jul 2024

Incident date

Jun 2024

Mileage

Not provided

Outcome flags

None reported

The contact owns a 2014 Toyota Prius Plug-In Hybrid. The contact stated while driving at various speeds and attempting to depress the brake pedal, the brake pedal was very stiff. The contact stated that the ABS, brake lights, and traction control warning lights were illuminated. The vehicle was taken to an independent mechanic, who diagnosed a failure with the brake power booster and brake power gasket. The vehicle was not repaired. The manufacturer was made aware of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 167,000.

Reported

Jul 2024

Incident date

Jul 2024

Mileage

Not provided

Outcome flags

None reported

Got rear end on 08.21.2023. Was able to drive car to work next day. Once I got home the ABS, traction control, and brake light went on. Using OBD2 scanner. Code 16-17 Right--Rear Wheel Speed Sensor Electrical Noise or Intermittent interruption, Code 16-17 Left-Right Wheel Speed Sensor Malfunction, 61-01 Modulator-Control Unit Initial IG Low Voltage, 65-33 Brake Fluid Level Switch Stuck On, 83-19 ECM/PCM Relation Failure, CT1203 ECM/EV Communication Circuit, C1345 Linear Solenoid Value Offset Learning Undone, C1392 Zero Point Calibration of Stroke Sensor Undone. Tow car to Toyota and they recommend to replace brake booster with Master Cylinder Assembly. Ran me $2968.41 bill which adjuster claim wasn't cause by rear engine damage. Accident Video: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Reported

Sep 2023

Incident date

Aug 2023

Mileage

Not provided

Outcome flags

Crash

I was in stop and go traffic. We got into a crash and my vehicle was totalled. I’ve never been in an accident before. It felt like the break system just broke down.

Reported

Mar 2023

Incident date

Mar 2023

Mileage

Not provided

Outcome flags

Crash

The contact owned a 2014 Toyota Prius PHV. The contact stated while driving approximately 30 mph when the vehicle would not brake while the pedal was depressed, which resulted in the contact crashing into a vehicle in front of it. No one was injured and a police report was filed. The contact stated no warning lights were illuminated. The vehicle was towed to a lot and then towed to a local dealer where it was diagnosed as being totaled. The contact does not know which dealership the vehicle was towed to. The manufacturer was not informed of the failure. The failure mileage was 110,083.

Reported

Oct 2021

Incident date

Jun 2021

Mileage

Not provided

Outcome flags

Crash

INSTRUMENT PANEL LIGHTING IS DIM . THE BRIGHTNESS CONTROL DOES NOT RESPOND WHEN TURNING IT UP. IT IS CONSISTENTLY DIM WHEN THE VEHICLE IS ON, IN MOTION OR NOT. THE PANEL DOES GET BRIGHTER WHEN THE HEADLIGHTS ARE TURNED ON, BUT NOT DURING DAYLIGHT .SPEEDOMETER LIGHTING IS DIFFICULT TO READ.

Reported

Dec 2020

Incident date

Mar 2018

Mileage

Not provided

Outcome flags

None reported

ON TOYOTA'S WEBSITE THE VEHICLE HAS A 10.9 GALLON FUEL TANK CAPACITY LISTED. I BOUGHT THE CAR USED AT THE END OF LAST YEAR AND HAVE NEVER BEEN ABLE TO GET ABOVE 8.5 GALLONS. I CONSTANTLY ACHIEVE 45-50 MILES PER GALLON AS ADVERTISED BUT NEVER GET THE RANGE I WAS PROMISED FROM THE DEALER OR BY TOYOTA'S WEBSITE.

Reported

Mar 2020

Incident date

Mar 2020

Mileage

Not provided

Outcome flags

None reported

TL* THE CONTACT OWNS A 2014 TOYOTA PRIUS. WHILE DRIVING APPROXIMATELY 35 MPH, THE CONTACT SUDDENLY DEPRESSED THE BRAKE PEDAL. THE PEDAL TRAVELED ALL THE WAY TO THE FLOORBOARD AND DID NOT STOP THE VEHICLE. AS A RESULT, THE CONTACT REAR ENDED THE PRECEDING VEHICLE. A POLICE REPORT WAS NOT FILED AND THERE WERE NO INJURIES. THE VEHICLE WAS NOT TAKEN TO THE DEALER FOR DIAGNOSTIC TESTING OR REPAIRS. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 70,068. *BF *JS

Reported

Sep 2019

Incident date

Sep 2019

Mileage

Not provided

Outcome flags

Crash

I EXPERIENCE LOST OF POWER AS WELL AS WAITING MORE GASOLINE, BEFORE THE ELECTRIC FUSE RECALL, MY AVERAGE MILES PER FULL TANK WAS 436 MILES, NOW IS 540 PER FULL TANK., ALSO THE EV MILES WAS 8.5 PER CHARGE AND NOW AFTER THE FUSE REPLACEMENT IS 13.7 MILES PER CHARGE, FOR ALMOST 4 YEARS I HAVE BEEN WASTING MORE GAS THEN NORMAL AS WELL AS LOST OF POWER.

Reported

Mar 2018

Incident date

Jun 2014

Mileage

Not provided

Outcome flags

None reported

THE HYBRID SYSTEM ON THE INVOLVED VEHICLES CONTAIN AN ELECTRIC VEHICLE (EV) FUSE WHICH MAY MALFUNCTION IF THE VEHICLE IS REPEATEDLY OPERATED IN EV MODE UNDER HIGH-LOAD DRIVING CONDITIONS, SUCH AS DURING A LONG HILL CLIMB. IF THE FUSE MALFUNCTIONS, WARNING LIGHTS AND WARNING MESSAGES WILL ILLUMINATE. IN SOME CASES, THE VEHICLE CAN BE DRIVEN, BUT WITH REDUCED POWER. N OTHER CASES, THE HYBRID SYSTEM COULD SHUT DOWN RESULTING IN THE LOSS OF MOTIVE POWER. POWER STEERING AND BRAKING WILL NOT BE AFFECTED. LOSS OF MOTIVE POWER WHILE DRIVING AT HIGHER SPEEDS CAN INCREASE THE RISK OF A CRASH.

Reported

Jan 2018

Incident date

Jan 2018

Mileage

Not provided

Outcome flags

None reported

I WAS ON A WELL TRAVELLED AND VERY WINDING ROAD COMING DOWN A MOUNTAIN WHEN ALL OF A SUDDEN MY PRIUS LOST POWER AND LIGHTS ON THE DASHBOARD INDICATING A MALFUNCTION IN THE PARKING SYSTEM AND THE HYBRID SYSTEM CAME ON. IT WAS A HOKEY POKEY ALL THE WAY DOWN THE MOUNTAIN AND THERE WAS NO PLACE TO PULL OVER WHILE MY CAR KEPT LOSING POWER AND GOING INTO NEUTRAL WHILE IN MOTION. IT HAPPENED ABOUT 5 TIMES IN ALL, THE LAST TIME AS I MERGED ONTO ANOTHER ROAD WHERE I COULD PULL OFF THE ROAD AND WAS IN ONCOMING TRAFFIC WHICH FELT EXTREMELY DANGEROUS. AFTER THAT, IT STOPPED, AND I WAS ABLE TO DRIVE IT TO THE DEALERSHIP.

Reported

Mar 2017

Incident date

Mar 2017

Mileage

Not provided

Outcome flags

None reported

TL* THE CONTACT OWNS A 2014 TOYOTA PRIUS PLUG-IN HYBRID. WHILE THE VEHICLE WAS PARKED, THE REAR PASSENGER SIDE SEAT BELT SHOULDER HARNESS LOCKED UP AND WOULD NOT MOVE. THE PASSENGER WAS UNABLE TO UNLOCK THE SEAT BELT. THERE WAS NO WARNING INDICATOR ILLUMINATED. THE VEHICLE WAS DRIVEN TO THE DEALER, BUT WAS NOT DIAGNOSED OR REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 22,000. *CN

Reported

Dec 2016

Incident date

Dec 2016

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.

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 Motor Engineering & Manufacturing (Toyota) is recalling certain 2013-2015 Prius and 2014-2017 Prius V vehicles not included in recall 18V-684. 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: An unexpected hybrid power system shut down may increase the risk of a crash.

Remedy: Toyota will notify owners, and dealers will perform a software update for the hybrid system. If the vehicle has experienced an inverter failure with certain hybrid system faults related to this condition, the inverter assembly will be repaired or replaced, prior to software update. All repairs will be performed free of charge. This recall began July 24, 2020. Owners may contact Toyota customer service at 1-888-270-9371. Toyota's number for this recall is 20TB10 / 20TA10.