Our Honda auto engine idle stop system routinely malfunctions. On numerous occasions, our car has completely turned off (radio and other power features go off as well) when it was in idle-stop mode and tried to start again. This has happened on major intersections when we come to a red light more than 10X with my family in the car. It causes delays in getting the car to start again. We have to put the car back in park, press the brake, and push the start button. We have to repeat these steps numerous times before the car will start again. Extremely dangerous. While not as dangerous, it does occur at stops signs. We've taken the care to the dealership multiple times. We are told they are aware of the issue but there is nothing they can do. The only solution is to disable the auto-idle button each time we restart the car.

- Cincinnati, OH, USA

When stopped at a stoplight or stop sign, the car has an auto start/stop feature where instead of the car idling, it shuts off and then starts back up when the brake is released. The car stalls and displays several dashboard warning lights and will not start back up after it auto stops. After several minutes, I can usually get it to start back up, but it typically happens in heavy traffic causing a substantial safety issue.

- Kansas City, MO, USA

No Restart After Auto Start/Stop Engages. On several occasions when coming to a full stop at a red light/stop sign or heavy traffic, the auto start/stop feature turns of the engine. However, when releasing the brake, which is supposed to turn the engine back on, the engine stalls and takes several attempts to restart the engine via the push button starter. Have taken the vehicle to our local Honda dealership several times. First couple of times they said it was a weak battery and they replaced it twice under the vehicles warranty. The third time they said it was our aftermarket forward camera that was causing interference and was charge by the dealer to remove and reprogram the "system". Fourth time they said it was a dirty throttle body and also had to pay to have it cleaned. Eventually found article on the internet from June '22 that there is an open investigation by NHTSA on this issue. Took vehicle back to dealership again and they wanted to charge for cleaning the throttle body but declined. Vehicle is not safe to drive with Auto/Stop feature on. We consciously have to turn off feature when initially starting the vehicle to avoid it from stalling in busy traffic or intersection.

- Santa Ana, CA, USA

Our 2019 Honda Pilot has issues when the start-stop is active. When we come to a stop at a traffic light, gate, etc. it often will not restart on brake release. This creates serious concern in heavy traffic and we have been close to being rear-ended at stop lights. To restart the car we often have issues if it stalls during this brake press and release. It seems to electronically show in park, but not able to restart since it is not in park. We also see the issue when brake is pressed and tries to restart based on time. There are various lights on when this occurs. If we don-??t activate the start-stop we don-??t see the issue. If we manually turn the start-stop we don-??t see the issue. However we need remember to turn this off manually defeating the fuel savings. I believe we can replicate this.

- Byron Center, MI, USA

The automatic start/stop system turns the car off at red lights, as it it supposed to. However, several times the car will not start when I push the gas pedal but instead the whole car turns off. It takes opening and closing the door while pushing the park button and the engine start button to turn the car back on. This usually occurs at red lights which is very dangerous.

- Columbus, MS, USA

In AUg 2021 when the auto stop engaged the car would fail to turn on. Errors would come on on the dash and while car would die at stoplight. Took to dealer and they could not replicate so nothing was done. This happened randomly and we would need to put in park, wait a while and turn back on. Then in Oct 2021 the battery died and they replaced under warranty. There was no issues until Nov. 2022. The same started happening. Again dealer could not replicate and nothing was done. They did note the 1 year old advanced battery was low and charge and have charged it.

- St. Louis, MO, USA

Engine will not restart after idle stop engaged. Vehicle must be put in park, shut off, and turned back on for engine to restart.

- Ponchatoula, LA, USA

All the lights on my dashboard were flickering and vehicle would not start. I was getting error messages on vehicle display that all my vehicle systems were offline. Vehicle started the next day, however at a red light my vehicle shut off and was no longer drivable. My vehicle died on the road and I was able to put my hazards on for other vehicles to go around me. We shut the vehicle down and approximately 20 minutes later the vehicle was drivable again. We took the vehicle in the next day for a full diagnostic. Everything came back normal and we read online that the battery may need to be replaced. Diagnostic said battery was OK, but we had it replaced anyway. I drove my vehicle that evening and while driving all my lights came up on my dashboard again. I pulled over, worrying that my vehicle would shut down while driving. Later that day my vehicle would not start again.

- Albuquerque , NM, USA

I was stopped at a stop light and the engine went into "idle" mode and then cut off completely and all power was lost. I put the vehicle in park and attempted to restart unsuccessfully. I was unable to restart the vehicle for several minutes.

- Denton, MD, USA

The vehicle is equipped with the Automatic Start/Stop feature. Three times in the past few months, the car has unexpectedly stalled at a red light in the middle of traffic, creating a hazard for us and drivers around us. The electric power steering system warning light came on momentarily, and the display screen said -??Radio not available-??. We were able to turn the car back on after a slight hesitation, but the radio and controls on the steering wheel stopped working. All controls, and the radio, were working again after leaving the car off for a few hours. The car was taken to our local Honda dealer, who did not find any diagnostic codes and was unable to duplicate the problem.

- Lutz, FL, USA

Our 2019 Honda Pilot will flash the brake for the front collision warning system when there is no oncoming traffic or even when the oncoming traffic is in its lane. It does not always happen, but enough to be an annoyance. It also tends, when stopped at a light, and the auto stop engages not to restart. The entire electrical system goes haywire and then dies. This includes the ability to use your 4way or emergency flashers. The car then has to be jumped or towed to restart the vehicle.

- Holland, MI, USA

The auto -stop feature is now completely defective. Since I hit 30,000 miles I have had issues with it infrequently completely shutting off the engine. Now the mileage is higher, the vehicle shuts off every time I stop at light or stop sign. I have approximately 56,000 miles on the vehicle. It has been regularly serviced at the dealership. I feel this is a major safety issue since other vehicles expect me to be moving one the light etc., changes. There are no warning lights or other symptoms prior to the failure.

- Tappan, NY, USA

Numerous restart issues when car in in idle mode stopped at a traffic light or stop sign. Approximately 6 times, my car has been stopped, in idle mode, and shifted into "neutral" & stalling. I'm required to place car into "park", turn on power, shift to drive in order to accelerate. Messages regarding "collision mitigation system" and almost stalling also occurs when car is stopped in idle mode. My battery (of less than 3yrs) has been replaced as nothing else has been "diagnosed" by Honda. Although these issues have since occurred since replacing my battery.

- Pittsford, NY, USA

My 2019 Pilot continues to randomly turn off. This happens at stop lights mostly, but did happen while driving as well. Latest was at a gas station where it would not restart. Had it to a mechanic and auto zone and both said that nothing is wrong with the car.

- Walnutport , PA, USA

The contact owns a 2019 Honda Pilot. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power. There was no warning light illuminated. The vehicle was taken to the dealer on several occasions, and the dealer replaced the starter, the injector, the transmission fluid, and the transmission plug. However, the failure persisted. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 42,000.

- Englewood, FL, USA

The owns a 2019 Honda Pilot. The contact stated that on multiple occasions while at a stop, he released the brake pedal, but the engine failed to re-engage. Additionally, the contact stated that the transmission inadvertently shifted into neutral while driving. The contact stated that he was able to restart the vehicle after multiple attempts. No warning lights were illuminated. The first time the vehicle was taken to the dealer however, the mechanic was unable to duplicate the failure. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 52,000.

- Jacksonville, FL, USA

The car is equipped with a stop-start system that is supposed to shut off the engine when you stop (eg at a red light) and restart almost instantly when you lift the foot off the brake. The restart feature fails somewhat regularly, maybe about 5% of the time. It has happened for many years, and with increasing frequency as the car is getting older. Sometimes the restart has trouble, the car misfires a moment, but then the engine restarts, sometimes a bunch of unrelated warnings sound when this happens, the car reporting that the collision avoidance systems are now offline or similar. Sometimes the engine completely stalls and does not come back online at all; when this happens, getting it restarted generally means putting it in park, turning the car completely off, then starting it again, a process that takes 10-15 seconds. When this happens at an isolated stop sign it is annoying; it has also happened on a highway exit ramp with traffic going around our disabled vehicle. Various Honda dealers have inspected and maintained the vehicle, and none have detected anything wrong to explain this behavior. The problem is intermittent and thus hard to reproduce on demand.

- La Crescent, MN, USA

Start/Stop (auto Idle stope system) function issue. I have several incidents where the start/stop malfunctions. The other day I was on a red light and when I pressed the gas pedal to start driving the vehicle hesitate to start and begun to move backward. This happened several time already.

- Richmond Heights, OH, USA

Check engine light Code p219b -??Check emissions system-?? Fuel injectors needed to be replaced at only 32,000 miles. Vehicle was out of standard factory warranty by 6 months but under 36k. Honda did replace them under the service bulletin. Just wanted to report so they hopefully keep covering for others as this is an expensive repair.

- Chalfont , PA, USA

"Check Engine" light comes on, followed by "Emissions System" problem, then "AWD" problem, and also "Transmission" light with a message to pull over and find a safe location. Have brought in for the "Emissions Systems" problem and AWD multiple times, but problem re-appears within a day. Uploading one invoice of many.

- Washington, DC, USA