The vehicle-??s Auto Stop/Start feature routinely fails to restart the engine when releasing the brake, turning the steering wheel, or selecting Park. In order to start the vehicle, it must be placed into Park, turned off, and then turned back on by holding the Start button. This has worked on most occasions (approx 90% of occasions thus far); other times a jump start was required. Attempts to resolve from Honda have required several purchases of a new battery and denial of there being a larger issue. There is no indication or warning that the feature has failed until attempting to resume driving (or the vehicle attempts to restart itself based on the vehicle-??s self-monitored parameters). The failure to start leaves the vehicle stuck in traffic risking collision and/or personal injury as a result.

- Chesapeake, VA, USA

While at a stop light, with the engine "Auto Start/Stop" switch engaged, I released my foot from the brake, and the car died. I was totally confused as to what occurred. After a minute or two I was able to restart the car. I was very concerned about being re-ended as when the light changed to green is when the car died. I had no advance warning of a problem, and it just died unexpectedly as I released my foot from the break. No lights on the dash either. I notified my dealer, who had never heard of this happening, and said when I can, please bring it in. In as much as the incident occurred in May 2022, and hadn't happened since, I did not take my car into the dealer. I can take my car in at any time to be examined.

- Peoria, AZ, USA

I recently saw an article that NHTSA is investigating Honda vehicles 2016-2019 regarding the idle stop/restart of the car and want to corroborate that this issue does exist. My husband and I bought a 2016 Honda Pilot Elite in late July of 2019. We believe we are the second owners of the vehicle. All was fine except for occasionally, the idle stop/restart feature would not work: the car would cut off at a red light, but when taking my foot off the brake and expecting a restart, you would see and hear all of the electrical turn off--radio, a/c, etc. and sometimes the car would not restart. I would have to wait 30 seconds or so, then restart the car as normal. The most harrowing experience with this happened on a six-lane highway where I was the last in line at a red light. The light turned green, all cars accelerated and left, but the idle stop did not restart, the car cut off completely, and it would not restart at all. I had to wait for a minute or two to re-try several times. This was a 55mph highway, I was in the middle lane completely stalled out with no other cars around me, and my children were in the car with me. I was afraid someone would come barreling along at the speed limit and hit us. We took the car in to our local Honda dealership on 11/21/19 and still have the paperwork, which reads "BMS no supplying proper voltage for auto stop function to operate properly", "Install new battery management sensor", "Battery test bad" and "replaced battery". We all figured it was the car's battery. A year later, we asked and they still couldn't disconnect that feature for us. I have made it a habit to hit the button to disable the idle stop whenever I drive the car. Just last week, my husband drove with the rest of us in the car, he did not disable the idle stop at a red light, and the car briefly cut off all electrical (but quickly turned back on) when he lifted his foot from the break. We still have the car. Please do inspect it. There are no warning signs.

- North Myrtle Beach, SC, USA

The contact owns a 2016 Honda Pilot. The contact stated that while operating the vehicle, the Auto START/STOP fuel-saving feature malfunctioned and the vehicle would not immediately restart after lifting off the brake pedal. The contact indicated that the failure had occurred on multiple occasions. The vehicle was taken to the local dealer who was unable to determine the cause of the failure and no service was performed. The manufacturer was not yet contacted. The failure mileage was 22,000.

- Birmingham, AL, USA

The contact owns a 2016 Honda Pilot. The contact stated that the Auto START/STOP function had failed. The vehicle would suddenly stall and shut off. The contact stated that the failure recurred at various speeds and also while the vehicle was idling. The vehicle would also shake and jerk. The contact would restart the vehicle and turn off the Auto START/STOP function. The contact had not taken the vehicle to the dealer to be diagnosed. The vehicle had not been repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 81,000.

- Graham, NC, USA

The contact owns a 2016 Honda Pilot. The contact stated that the AutoStart function failed to engage temporarily when attempting to drive from a complete stop. However, the AutoStart feature was designed to engage automatically while depressing the accelerator pedal. There were several unknown warning lights illuminated. The vehicle was taken to the dealer several times, where it was diagnosed that no issues were found. However, the failure persisted. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 40,000.

- Lutherville Timonium, MD, USA

The engine in my vehicle fails to restart after coming to a complete stop. My car stalls out and can take several attempts to try to restart the car. This has been very dangerous. It can occur whether I'm stuck in traffic on a major highways or even just at a stop sign. It always occurs when the start/stop function is engaged. I have taken the car to the dealer multiple times to deal with this issue and even tried to get the start stop function removed. Unfortunately, they have never been able to fix the problem.

- Virginia Beach, VA, USA

Was driving the car in a parking lot (thankfully) when the dashboard lights started randomly flickering and clicking like crazy. Then the battery completely drained. The car wouldn't start at all. When I tried to restart the engine the lights would go crazy, flashing every single emergency warning light on the dashboard and clicking sounds for a few seconds then dead again. Had to get a tow truck and finally was able to jump it and drive to the dealer. I've seen so many reports of this same issue occurring with this same model. The dealer told me that its due to a faulty keyless control module that only the dealer can replace for $800 plus labor. The bill is over a $1000 with tax included. The part is on national back order so they said my car will be in the shop for probably 3 months at least. And I spoke to multiple mechanics who said that they can't fix it because the dealer won't sell them the part. I've been without my car for a month already and dealer says no word on the part and it's not covered which sounds crazy because I'm reading of others having this same issue.

- Stockholm, NJ, USA

For the last 6 months (or maybe a bit more) my 2016 Honda Pilot Touring does not successfully re-start after it's auto-idle-stop feature kicks in at stoplight or in stop/go highway traffic. This maybe happens 20% of the time, but more likely on a hot day or when AC/radio all running high or uphill start. When this happen car stalls and needs to be completely restarted which takes 30 secs and a requires a "reboot" by pressing the start button 2-3 times. To add to the annoyance you cannot permanently disable the auto-idle-stop feature. Instead every time the car restarts it is on by default and the user has to manually turn it over ever time. This is happening with the original 2016 battery from new dealer purchase. The dealership claims it's an old/weak battery issue, but the car has no problem starting on a fresh cold start. This is a safety issue if the car stalls and the driver needs to quickly restart to escape danger, collision, etc.

- San Jose, CA, USA

On multiple occasions the car will stale and not restart when the auto engine off engages. It is left me stranding in the middle of traffic several times. The vehicle has been taken to Honda for service on many occasions and told there is nothing wrong.

- Flemington, WV, USA

Vehicle died when auto start/stop was activated at a stop sign. The vehicle had to be jumped to restart. My wife and 8 month old baby were in the vehicle alone in heavy traffic and nearly caused an accident.

- Mckinney, TX, USA

alarm going off intermittently, dash board glitching when car is off and parked.

- Oakland , CA, USA

Dash Lights flash, alarm sounds and Battery drains randomly.

- Milltown, NJ, USA

This error keeps popping up. Honda won-??t fix it. Keyless start system problem error. This is an known error with the specific 2016 Honda Pilot model. I see 100s of people online with the same error. But Honda won-??t fix it for free.

- Gallatin, TN, USA

Random triggered alarming caused during flickering and clicking of dashboard lights leading to battery drainage. Many reports of this same instance occurring with this particular model. It appears to be a faulty keyless control module that now many Americans have had no choice but to pay $800 to replace in the absence of what obviously should be a recall at this point.

- Lake Butler , FL, USA

Keyless start/stop button does not work. Honda dealership says it is not active recall but switched was replaced at 88000 miles.

- Virginia Beach, VA, USA

The Pilot defaults to the automatic engine shutoff when the brake is pressed. Several times, my car would shut off at the stop, but not restart when I took my foot off the pedal. When I'd go to restart the car, pressing the Start Engine button would just turn on accessories - it would never engage the gas/ignition. I'd have to give it a few minutes. I took it to my dealership who replaced the push button ignition. I had googled the issue and saw others had the same issue and warning message about the brake mitigation system, I saw that it was likely related to the brake booster/vacuum hose. I brought it back to the dealer the following month as the shut off had happened again and explained again about finding the brake booster as the issue. They replaced the part and the stall out hasn't happened again. It was never a consistent issue. I don't know what caused it to shut off, as it happened in cold or warm weather. Having to press the brake really hard is not a natural step in driving, so I'm thinking there's something wonky with the system. Even when I remote start my car, I have to press the brake pedal extremely firmly to have it remain started when I go to drive. Otherwise, the car will just switch to the accessory mode. This is a risk because the car defaults to the auto engine shut off when in traffic. If a car is unable to restart when the brake pedal is released, accidents can happen

- Nashua, NH, USA

Last Fall I was driving, exiting freeway, I slowed down before I got to traffic light, then my vehicle stalled. I looked down and push the drive button (i had the auto idle-stop on), then pressed on gas, but car would not move. I pushed the start button twice and nothing happened. After a few minutes I pushed the start button gain and the vehicle started. I was in the middle lane and thankfully no one was behind me when this happened. Similar issue happened to my husband last week after car was picked up from Honda dealer for Transmission fluid exchange ( I in passenger seat). We were exiting the freeway going into another freeway, we slowed down because there was bumper to bumper traffic when the vehicle stalled. The vehicle was on auto idle-stop on. My husband pushed the park button, then the drive button but noting happened. Then pushed the start button twice and the car started again, he pressed on the gas and the car moved.

- Mesquite, TX, USA

Vehicle stalls and shuts off at a stop when engine idle stop is enabled. All lights on dashboard are illuminated and vehicle automatically sets to N gear. Upon attempting to restart engine, It takes several attempts to put vehicle back into P gear and start engine by pressing the push start button as well has having foot on the brake pedal. After doing so, the vehicle will start up right away and can be driven off normally with no warning lights illuminated on dash. This issue has happened numerous times. When engine idle stop is disabled, it does not happen. Battery has been replaced as well as push start button switch per service bulletin 20-117. Software update for TCM/PGM has also been performed as per set DTC P2638 (torque management feedback signal A range/performance) U1211 lost communication with shifter, U0404 invalid data received from shifter. Dealership has not been able to duplicate the problem.

- Milpitas, CA, USA

The contact owns a 2016 Honda Pilot. The contact stated that while at a complete stop, the vehicle would stall upon the depression of the accelerator pedal with either the Collision Mitigation Failure or Shift to Park and Restart Vehicle messages were displayed on the instrument panel. The contact had taken the vehicle to the dealer several times for the same failure; however, the dealer was unable to duplicate the failure. The contact stated that upon disabling the auto idle-stop feature, the failure did not occur; however, the feature had to be manually disabled each time upon the start of the vehicle. The manufacturer had been notified of the failure but offered no assistance. The vehicle remained in the possession of the dealer and was not repaired. The failure mileage was approximately 30,000. The VIN was not available.

- Mountain View, CA, USA