2021 Honda Pilot reported problems

The records describe a problem worth checking before purchase.

“The side curtain airbags deployed while I was sitting in the passenger's side of the car looking into the glove compartment for about ten minutes with the car being completely off and parked in the driveway. The Ignition was off and there was glitching and clicking sounds seconds before the airbags deployed. This could have happened at any point while driving on the street or the freeway. It could have caused an accident and could have killed me if it happened elsewhere. It could have been the passenger's side airbag that deployed and I could have been seriously injured. This incident happened on a Sunday, so I had the car towed to Honda the following day. Honda's response after investigating: "We contacted American Honda Technical Support. Our American Honda District Rep informed us to have the customer contact her insurance provider for repairs." Aside from this official response, I was told that they investigated what they could and found no reason as to why the airbags would have deployed. I was told I had two options. Pay for repair with them or report it to the insurance. I stated that the release of the vehicle was a liability if I decided to not pay for repairs with Honda. After some dialogue, they helped with a loaner car and did not release the car to me. There were no warning lights or messages on the dash whatsoever. About a month prior to this incident, the car started alarming randomly. The random alarming would stop when disconnecting the hood latch sensor. I took the car in for a diagnosis and Honda reported that the cause of the alarm was the keyless access unit. The car (screen and dash) would still glitch after the hood latch sensor was disconnected. My hope is that Honda & American Honda admit responsibility & provide a solution not only for me but for all Honda Pilot owners that may be in danger. Investigating should be a priority, but even if repairs are done to my vehicle, I no longer feel safe driving a my vehicle.”

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“My 2021 Honda Pilot has a recurring electrical/network communication failure that causes “Network Communication Lost” and “MOST Net Off” messages to appear on the infotainment screen. When this occurs, the infotainment system malfunctions, audio becomes unavailable, and the backup camera display is lost without warning. The problem is intermittent, unpredictable, and has occurred numerous times. The loss of the backup camera is a serious safety concern because it occurs while the vehicle is otherwise operating normally. During reversing, rear visibility is reduced, increasing the risk of striking another vehicle, pedestrian, child, cyclist, or object. The error messages and loss of infotainment functions also create driver distraction and raise concerns about the reliability of the vehicle’s electronic systems. I reported the issue to an authorized Honda dealership multiple times. They recommended replacement of the audio/display unit, and I paid for the repair. However, the same failure returned. The dealer later advised that the root cause may involve wiring, MOST network components, or another electrical defect and estimated approximately $3,000 in additional repairs. Despite multiple visits and approximately $983.29 in diagnostic and repair costs, the defect remains unresolved. Honda Service Bulletin 20-058 describes similar MOST bus symptoms, including communication errors, loss of audio, infotainment malfunctions, and multimedia network failures. My vehicle exhibits the same symptoms. Because the dealer-recommended repair failed, the problem appears to involve the vehicle’s electrical communication network rather than a single component. This recurring defect affects the backup camera, infotainment system, and other electronics relied upon for safe operation. I believe it may affect other 2019–2021 Honda Pilot vehicles and may represent a widespread safety defect. I request NHTSA investigate to determine whether a recall / other corrective action is warranted.”

The records describe a problem worth checking before purchase.

“My 2021 Honda Pilot has a failing rearview camera caused by the identical MOST network coaxial defect described in NHTSA Campaign 23V431000, but Honda drew the recall population too narrowly and excluded my VIN.”

The records describe a problem worth checking before purchase.

“The contact owns a 2021 Honda Pilot. The contact stated that at all times during the use of the vehicle, the infotainment display system goes blank. The contact also noticed a popping and crackling noise coming from the audio speakers. The contact referenced NHTSA Campaign Number: 23V431000 (Back Over Prevention) to have already been performed on the vehicle, but the issue has since recurred. The vehicle was taken to a local dealer where it was diagnosed with a factory defect involving a dashboard wiring harness that was physically bent at a 90-degree angle from the production plant. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 75,000.”

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“While operating with the Auto Shut Off enabled, vehicle stalled. Warning lights came on directing the driver to put into Park. Vehicle would not turn off/on, could not take out of park. At the time, vehicle was in bumper to bumper traffic in a construction zone causing a very dangerous situation for the driver. Vehicle was towed and 10 minutes after the incident, the vehicle could be restarted. This is the second time this has happened in the last 9 months. Unfortunately the first was not reported. This is completely unacceptable. Honda knows this is an issue and refuses to address it.”

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“This is the major safety issue while driving with my family on a highway. Keyless control unit is failing when car stops. While on a highway, all the lights on the dashboard start flickering, alarm went off brake system got locked. I need to pull over, stop the car and restart the car again. The flickering dashboard problem persisted the whole day and alarm went off intermittently till it drained the battery. Problem is reproducible.”

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“Auto Idle Stop restart. Engine shit off at a complete stop. Release the brake to go and vehicle fails to restart. Vehicle may shit itself into neutral or park. Must manually restart the vehicle. Sometimes after multiple time attempts. Vehicle is stranded in traffic for several seconds to several minutes.”

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“The contact owns a 2021 Honda Pilot. The contact stated that while driving at various speeds, the vehicle unintendedly accelerated without the driver depressing the accelerator pedal. The security alarm randomly activated while the vehicle was parked and turned off. The check engine warning light was illuminated. The message "Emissions System Failure" and a key fob error message was displayed, and the vehicle failed to start. The vehicle was taken to the local dealer. The cause of the failure was not yet determined. The manufacturer was not notified of the failure. The failure mileage was 98,000.”

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“The Multipurpose front camera just went out and a series of many warning lights came on in my Honda Pilot. The camera just stopped working for no reason, with no warning and never an issue before. I took my Honda Pilot to the Honda Dealership service department to have it checked and resolved. The dealers resolution was quoting me $2,000.00 just for the camera, with no labor or calibration, that is extra. They told me its a glitch in the Honda's system and that's probable why the camera stopped working. They told me they are not responsible for the camera and won't replace it. They showed no concern for safety and I had to pick up the vehicle if I did not replace, at my cost, the $2000.00 camera plus labor and calibration which may be around $3000.00 all told. I can't believe that if this is a known problem to Honda and Honda is aware of it in their system, why aren't they responsible to replace a faulty manufacturing problem. Honda is passing their problem to consumers at a cost of $2000.00 just for a camera. This should be unacceptable and it is outrageous the fact that Honda knows of a problem in their system that creates a safety problem and still are allowed to have the financial burden put on the consumer with no accountability. I had 2 other recalls on file and nothing was done. With the warning lights on, I am very concerned of the major safety issue. I don't believe, I as a consumer, should be responsible for the cost of a manufacturing issue. Now I have a vehicle with a safety issue and an extremely high cost resolution. I wanted to inform you because I believe that I am not the only person this has happened too and hopefully you can address this issue with Honda. Thank you.”

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“2021 Honda Pilot is subject to "rapid acceleration". We had no notification of this issue until the vehicle drove itself into our home on its own causing damage to the car and our home. Only after we did some research did we know Honda had this issue.”

The records describe a problem worth checking before purchase.

“With auto stop enabled, was the first car at a stop light. What happens next may be out of order - apologies. Light turned green and I pressed the gas and car shut off. I went to restart the car and a dashboard notification appeared saying to put car in N ? So I did and pressed gas again that did not work. Could not put car in park - cars were honking behind me and it was pouring rain so visibility was not easy. I don’t remember the next steps as I was frustrated yet somehow I pushed enough buttons that I was able to push the brake and start button enough times that the car blessfully restarted. I disengaged the auto idle button at that point and my car returned to my house sluggishly. It was as if the car could not shift into gears properly. Car has been not hitting gears properly and has turned off at auto stop over a dozen times more. Honda service states they cannot duplicate so cannot resolve.”

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“In November 2025, my 2021 Honda Pilot started experiencing stalling while driving, hesitation when accelerating, and sudden power loss while idling. I took the vehicle to my local Homda dealership and each time they dismissed the problem, indicating that they could not find any issues. On 4/24/26, the vehicle experienced sudden engine failure in the middle of moving traffic. There were no warning lights or dashboard messages leading to the issue. The vehicle was towed to the local Honda dealership, where they kept the vehicle for a month and charged over $20,000 for a repair (not replacement). Ten (10) days after picking up the vehicle from the dealership, the engine locked and seized again on 6/9/26 in the middle of traffic and nearly caused a serious accident with 3 other vehicles.”

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“We had the engine serviced for recall on stop start issue on 12/4/25. On May 15, 2026 the engine failed. The dashboard came on with every warning light and a mechanic said the engine was knocking and had to be replaced. Honda denied any issue and said the timing belt had to be broken. The mechanic confirmed no issue with timing belt and said you can’t start the engine if the timing belt was broken. The mechanic said the engine was knocking and had to be replaced because the car could no longer be driven safely.”

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“Car slammed on breaks for no reason. Good thing I was paying attention and was able to keep my vehicle under control. My neck hurt for the rest of the day and is Sore today. Now my cars system says the system isn’t working correctly after my car slammed on the breaks for basically no reason. I know this is an ongoing problem certain Honda models already. I believe every Honda with this system should be recalled.”

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“While driving down the road the emergency braking turned on many times when I wasn’t even near a vehicle. It turned on about a total of 10 times without a car being unsafely in front of me. I just got this vehicle today and I’m worried about whether I should keep it or not because of this.”

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“Driving on the road and heard static noise from the infotainment system after an update. I pressed the Collision Mitigation Braking System button and the dashboard had multiple warnings and disabling the entire Advanced Driver Assistance Systems (ADAS). The drive light starting blinking and a message appreaed to get to a Honda dealer. The Honda dealer inspected the front camera in the top of the windshield and said it needed to be replaced.”

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“No Restart After Auto Start/Stop Engages On June 3, 2022, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE22005 after the agency received VOQs and several field reports concerning the Auto Idle Stop (AIS) feature on 2016-2019MY Honda Pilot vehicles. The complaints allege that the engine fails to restart on its own from a complete stop at a traffic light or road intersection with the AIS function engaged. The subject vehicles are equipped with a 3.5L engine with a 9-speed automatic transmission. On January 6, 2023, Honda released service bulletins 23-008 and 23-009. These service bulletins address the failure to restart issue in the 2016-2019MY Honda Pilot vehicles, as well as the 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2019-2022 Honda Passport, and 2020-2023 Honda Ridgeline vehicles. The repair outlined in the service bulletins is a two-stage countermeasure to remedy the issue. The first stage is a Programmed Fuel Injection (“PGM-FI”) software update. The second stage is only deployed if the software update fails to remedy the issue. The second stage, depending on the model and model year, consists of replacement of the starter assembly, starter relays, and a valve adjustment. Additionally, Honda extended the warranty coverage to 10 years with unlimited mileage for vehicles requiring the second stage component replacement. ODI continues to receive complaints of the AIS failure to restart, with many complainants alleging the campaign countermeasures had been completed.NHTSA has reviewed Honda's Information Request Letter responses involving warranty claims, lawsuits, and consumer complaints in addition to ODI's own data. This Engineering Analysis is being opened to further consider the potential safety defect, including gathering additional data regarding Honda’s service campaign efficacy. ODI is additionally expanding the scope to encompass all vehicles addressed in Honda’s service bulletins 23-008 and 23-009 as well as newer model year vehicles, which are substantially similar to the vehicles covered by the service campaign. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.”

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“Service bulletin - On February of 2022, the 3G network will no longer support the in-vehicle services that the vehicle has previously supported. As of August 23, 2022, the Product Improvement Campaign has ended. The TCU can no longer be updated using Over The Air updates. If the customer needs to restore TCU services, the only option is to replace the TCU. This would be done as a customer pay repair. ”

The records describe a problem worth checking before purchase.

“Service bulletin - On February of 2022, the 3G network will no longer support the in-vehicle services that the vehicle has previously supported. As of August 23, 2022, the Product Improvement Campaign has ended. The TCU can no longer be updated using Over The Air updates. If the customer needs to restore TCU services, the only option is to replace the TCU. This would be done as a customer pay repair. ”

The records describe a problem worth checking before purchase.

“Service bulletin - On February of 2022, the 3G network will no longer support the in-vehicle services that the vehicle has previously supported. As of August 23, 2022, the Product Improvement Campaign has ended. The TCU can no longer be updated using Over The Air updates. If the customer needs to restore TCU services, the only option is to replace the TCU. This would be done as a customer pay repair. ”

The records describe a problem worth checking before purchase.

“Service Bulletin - Under certain circumstances, after coming to a stop and engaging idle stop, the vehicle may not restart automatically due to excessive cylinder pressure and/or low cranking torque. Typically, the customer can immediately restart the vehicle by selecting Park and pressing the ENGINE START/STOP button. NOTE: If 23-008 Product Update: PGM-FI Idle Stop Software Update is applicable to the VIN, the PGM-FI software must be updated first before the warranty extension applies. Honda is extending the warranty coverage for valve adjustment and starter replacement related to this condition to 10 years from the original date of purchase with no mileage limitation.”

The records describe a problem worth checking before purchase.

“Service Bulletin - Under certain circumstances, after coming to a stop and engaging idle stop, the vehicle may not restart automatically due to excessive cylinder pressure and/or low cranking torque. Typically, the customer can immediately restart the vehicle by selecting Park and pressing the ENGINE START/STOP button. NOTE: If 23-008 Product Update: PGM-FI Idle Stop Software Update is applicable to the VIN, the PGM-FI software must be updated first before the warranty extension applies. Honda is extending the warranty coverage for valve adjustment and starter replacement related to this condition to 10 years from the original date of purchase with no mileage limitation.”

The records describe a problem worth checking before purchase.

“Service Bulletin - Under certain circumstances, after coming to a stop and engaging idle stop, the vehicle may not restart automatically due to excessive cylinder pressure and/or low cranking torque. Typically, the customer can immediately restart the vehicle by selecting Park and pressing the ENGINE START/STOP button. NOTE: If 23-008 Product Update: PGM-FI Idle Stop Software Update is applicable to the VIN, the PGM-FI software must be updated first before the warranty extension applies. Honda is extending the warranty coverage for valve adjustment and starter replacement related to this condition to 10 years from the original date of purchase with no mileage limitation.”

The records describe a problem worth checking before purchase.

“Service Bulletin - Under certain circumstances, after coming to a stop and engaging idle stop, the vehicle may not restart automatically due to excessive cylinder pressure and/or low cranking torque. Typically, the customer can immediately restart the vehicle by selecting Park and pressing the ENGINE START/STOP button. NOTE: If 23-008 Product Update: PGM-FI Idle Stop Software Update is applicable to the VIN, the PGM-FI software must be updated first before the warranty extension applies. Honda is extending the warranty coverage for valve adjustment to 10 years from the original date of purchase with no mileage limitation.”

The records describe a problem worth checking before purchase.

“Service Bulletin - Under certain circumstances, after coming to a stop and engaging idle stop, the vehicle may not restart automatically due to excessive cylinder pressure and/or low cranking torque. Typically, the customer can immediately restart the vehicle by selecting Park and pressing the ENGINE START/STOP button. NOTE: If 23-008 Product Update: PGM-FI Idle Stop Software Update is applicable to the VIN, the PGM-FI software must be updated first before the warranty extension applies. Honda is extending the warranty coverage for valve adjustment to 10 years from the original date of purchase with no mileage limitation.”

The records describe a problem worth checking before purchase.

“Warranty Extension - Under certain circumstances, after coming to a stop and the idle stop feature engages, the vehicle may not automatically restart.”

The records describe a problem worth checking before purchase.

“Warranty Extension - Under certain circumstances, after coming to a stop and the idle stop feature engages, the vehicle may not automatically restart.”

The records describe a problem worth checking before purchase.

“Warranty Extension - Under certain circumstances, after coming to a stop and the idle stop feature engages, the vehicle may not automatically restart.”