general problems of the 2021 Honda Odyssey - part 2

On 28-Dec-2024 I noticed the power tailgate stopped working on my 2021 Honda Odyssey. I tried to press the power tailgate button on the key fob, the button on the driver's side control panel, and the button on the tailgate itself, but none of them works. I did some research online and found out it's a common problem in 2018 to 2021 models and the cause was the failed power tailgate control unit due to water leakage through the cracks on the vehicle body. I opened mine and found there was water in the control unit box which might have caused short on the circuit board. I bought a new control unit a week later and it fixed the issue.

Drive side rear power door stopped working. Upon using handl to opperate as usual the door stopped only a few inches open. A gentle shove got it open and opperational. The next day it did the same thing this time refuding to eithe ropen completely or re-latch. My children were in the car with me on the way to school and the door could not be opened to let them out or closed to safely proceed on our route. We began diagnositcs and found that the door continued to be problematic; opening just enough to be unlatched but nor going further, opening only half way and locking in place, or openeing completely then refusing to close. . . The door being in manual mode or power mode makes no differnece. After complelty disasembling the door/panel to check calbles and motor, checking fuses etc we put it all back to gether and suddenly it worked fin for about a dozen tries. However the passanger side rear door (perviously untouched) suddenly developed the same problem. Now both doors will not function in either power or manual mode and I am waiting on the dealership to look into possible computer issues.

After the pgm-fi update was put into our car, the engine cuts out entirely while at stop lights and will not wake back up. The Honda dealership is saying that there is nothing they can do.

1. While I was driving on the freeway, my radio turned off and my car put itself into neutral! I was able to safely pull over and put it back in drive. Note: this incident happened after 2 months of weird electrical things happening to the car, such as the radio turning on after the car had been turned off, car not starting, sliding doors losing power when they are halfway closed, coming to a stop and putting the car in park then the car completely loses all power/interior lights, the car turning off while stopped at a light and more. . . 2. Had there been more traffic I would have been in major danger. I could have easily been rear-ended or hit someone in the process of trying to get off of the freeway. It could have caused a multiple car collision. Grateful my children were not in the car at the time of the incident. 3. The car has been inspected by spreen Honda multiple times and by an independent Honda mechanic. Spreen Honda has not been able to reproduce the problem. They won't do anything besides hook it up to the computer, and since there are no codes present "there is nothing they can do". The independent mechanic said they'd never seen anything like this. When I reported the incident to Honda America, they recommended I should continue taking the car to the dealership, which makes no sense as the dealership does not actually attempt to diagnose the problem if there is no code. 4. The manufacturer has not inspected the vehicle. When I reported this to Honda America they encouraged me to continue working with the dealership service department only. They don't take information from 3rd party service providers. This is completely unacceptable. 5. Right before the car shifted to neutral, the radio turned off and the dash lit up orange.

1. Incident: I was driving and stopped at a red light, took my foot off of the brake and the car completely died, leaving me stranded at the intersection. The car started back up after 4 minutes. Note: this incident happened after 2 months of weird electrical things happening to the car, such as the radio turning on after the car had been turned off, car not starting, sliding doors losing power when they are halfway closed, coming to a stop and putting the car in park then the car completely loses all power/interior lights, and more. . . 2. My safety was put at risk by having a non-functioning car in the middle of the road. Someone could have rear-ended me. Also, it was over 100 degrees outside which added to the panic I was feeling. 3. The car has been inspected by spreen Honda multiple times and by an independent Honda mechanic. Spreen Honda has not been able to reproduce the problem. They won't do anything besides hook it up to the computer, and since there are no codes present "there is nothing they can do". The independent mechanic said they'd never seen anything like this. 4. The manufacturer has not inspected the vehicle. When I reported this to Honda America they encouraged me to continue working with the dealer. This is completely unacceptable. 5. Right before the power went out the dash lit up with every warning lamp for maybe 5 seconds.

Team Honda in merrillville refused to fix my recall unless I paid for diagnostics.

A recall has been issued on my vehicle since February. It is now almost may and when I call Honda about the recall they tell me that they do not have the solution as of yet.

The contact owns a 2021 Honda Odyssey. The contact stated that while driving at various speeds, the "passenger’s sliding door failure" message was displayed on the instrument panel. The contact also stated that the rear passenger’s side sliding door failed to fully open upon entering or exiting the vehicle. The vehicle was taken to two dealers, Honda of fort myers (3550 colonial blvd, fort myers, FL 33966) and coconut point Honda (22240 s tamiami trail, estero, FL 33928) and the contact was provided a diagnostic test fee to determine the cause of the failure, but the contact declined. The manufacturer was notified of the failure and referred the contact to the NHTSA hotline for assistance. The vehicle was not repaired. The failure mileage was approximately 19,000.

All of the safety system and efficiency systems had failures which made us take to our local Honda dealership for evaluation. After the first visit we were told that they could not find the problem, although they saw all of the error messages. The error messages appeared again 3 days later so we took it back to our local Honda dealership. This time one of the service reps had seen that problem before and said it probably was due to water entering the rear trunk circuit board controller and shorting out the connections. This was confirmed by a service tech during the 2nd evaluation. After research this is apparently a common issue. We had to pay approximately $700 to fix the situation because Honda does not have this issue as a recall. We believe this is a clear design error that allows water to enter the circuit board housing. This created a dangerous situation as the head lamps as well as the driver safety features and direction signals intermittenly worked due to the shorted out circuit board.

Upon going to start my vehicle it would not start. I ended up jump starting the car and going to buy a new battery. I replaced the battery even though repair facility stated battery was at 78% and in good state. Two days later I went to start the van again and the battery was again dead. I jumped the car to get it started and have had to continually jump start the car due to no start issue. The alternator is showing a constant 14. 3 volt charge when running but the battery continues to die. Has left my family stranded multiple times in the past week. No known cause or fix.

I was driving on I-270 highway in active hov lane and had to stop because of traffic. The car stopped the engine as it usually does by "auto idle stop" system but failed to start it back when I needed to continue driving. I noticed that the battery light blinked on the dashboard when it tried to re-start the engine. As a result I was in active hov lane with quickly approaching traffic from behind. We all (me, my wife and 2 kids) were scared. I called 911 immediately for help. This all could end up with a crash and injuries. While calling 911 I was trying to restart the car by pressing the button to turn the car off and on. About 3 attempts failed when a few minutes later the engine started and we continued the drive. This was the worst nightmare to stuck on a highway. Luckily nothing happened but it definitely could. This is a major concern for me.

The vsa modulator has repeatedly failed. When it fails, all of the safety systems report errors - air bags, abs brakes, high beams, traction control, blind spot detection, parking sensors, etc. Additionally, the power sliding passenger doors and tailgate will not open, even manually. I have taken it into Honda dealerships on 3 separate occasions. On 6/14/21 (vehicle mileage 7,453) they cleared the error codes and reset the system and reported it was fixed. On 2/26/2022 (vehicle mileage 21,077) it happened again and they reported the vsa modulator as defective and replaced it under warranty. On 7/29/2022 (vehicle mileage 26,916) it happened again. This time the dealership disconnected and reconnected the vsa modulator and it decided it was fixed. At the time of the issue I was driving the van at approximately 30 mph on flat streets through my town. I've expressed my concerns that this defect renders the vehicle extremely unsafe. Over the past two weeks I've contacted Honda corporate repeatedly requesting further repairs or assurances that this error would not occur again and have been passed around to case managers' voice mailboxes and have been unable to speak to anyone about my concerns. While no injury or crash has occurred yet, I am concerned that this if this occurs again, myself or my family could be hurt.

Honda Odyssey 2021 has major safety issues – the van starts engine on itself, shuts the engine on itself, tail lights are on when the engine is running, the knob for the lights on the turn signal handle was in off position when the van was observed starting, running and shutting engine on itself – for no reason. In all occasions key fobs were untouched. Once Honda Odyssey was observed with the engine starting and shutting on itself when both of the key fobs were in 10 miles distance from the vehicle. Brought twice to the dealer, cannot fix it. Contacted Honda on 2/17/22 informed about the problem. Called Honda on 2/21/22 to check on the case, was told that will assign a manager to review this safety concern, but it may take two weeks, possibly two month or maybe more, depending how busy they are. 8 days have passed, no response yet from Honda. I am concerned that it may shut the engine on its own while driving.

The 'infotainment" system turned off stating "network connection lost. " the speakers then started making a very loud crackling sound that could not be controlled with the volume button. It was very distracting to the driver--sounded like rocks hitting the windshield. When the infotainment system was off, the blindspot monitor and back-up camera stopped functioning. This has happened several times.

2021 Honda odessey lost power while driving 6 times. I ended up taking it to get service and the dealer couldn't replicate the issue in 3 different occasions. Ended up trading the odessey on Thursday for a new one. However the the new 2021 Honda odessey that I bought Thursday 4/8/21 lost power on me today as I was driving.

What component or system failed or malfunctioned, and is it available for inspection upon request? the auto start/stop function only works intermittently on our 2021 Honda Odyssey. Occasionally, when the auto start/stop function does shut off the engine when the vehicle is at a complete stop, the engine fails to restart on its own. The vehicle is available for inspection upon request. How was your safety or the safety of others put at risk? this malfunction occurs intermittently and without warning when the vehicle is at a complete stop in traffic. The vehicle cannot be driven under its own power in this condition, often leaving it disabled in a traffic lane with other vehicles stuck behind and/or passing by at normal travel speeds. As such, it endangers both the occupants of my vehicle and the other vehicles in the vicinity. Has the problem been reproduced or confirmed by a dealer or independent service center? yes. My local Honda dealership acknowledged the problem and completed a pgm-fi software update. However, this update did not correct the issue, and Honda refuses to take financial responsibility for the repairs necessary to correct the problem. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? yes. The following timeline details my interactions with my local Honda dealership regarding this issue: 4/13/23 - the dealership inspected the vehicle and claimed the auto start/stop system was "operating as designed"; 9/6/24 - the dealership completed a pgm-fi update as directed by a Honda product update campaign; 2/12/26 - the dealership inspected the vehicle, suggested battery replacement (which tested good on 3/3/26), and if still not corrected, advised replacement of the starter at my expense. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? the problem has occurred without notice since purchase on 3/11/21.

The first problem I came across was auto start. It always say temporary off because either I didn't press on the break hard enough or the ac is running. Mostly it off saying it need to be charge and the company already put a battery in the car and it still say the same thing. The other thing that keep happening with the car is the screen that pop up the back camera and also control the air conditioning. It shut off and mos network failed and trun off and it keep going off and on. Im scared imma drive and it gonna shut off while driving already it hard at time using my back cameras since the screen work when it want to. I did talk to the dealership about the car and the problems since they said they check it and it was ok but I'm still having problem. I only had the car for 9 months and the problem start happening 2nd month with the auto start and 5 months for the mos network fail within me having the car.