There is an electrical drain causing the battery to drain to the point where it will not start. Alternator was replaced, then the issue persisted. Most recent problem include the power tailgate opening on its own. Rear power tailgate issue. The rear tailgate will attempt to open while driving, but the warning sound chimes and alerts to the problem. If the vehicle is left unlocked the tailgate will open itself. The power tailgate button in the driver seat does not work. The close button on the bottom of the door is illuminated (has power) but will not close the door. The soft rubber button above the license plate will engage the motor to lift the tailgate, but not to close it. Others have filed complaints about a water leak impacting the rear control board and causing it to fail. Leak may be from the fin on the roof or related to the cracking and rotting seal on the bottom of the rear windshield.

- Senoia, GA, USA

Rear tail gate will not open even manually due to water getting inside of control module due to faulty design which causes water to go into the module and fry it would open and close randomly when it would rain now it has stopped working all together no indicator on dash anymore I guess this last rain finished it off terrible design very disappointing with Honda this is a major issue that needs to be fixed

- Kings Mountain , NC, USA

Power tail gate doesnt work. Water got into the car and leaked onto the power tail gate control circuit causing it to no longer work.

- Deland, FL, USA

Van started having a loud clicking sound and radio would not work. took it in for repair, they said they fixed it. Took it in again because it actually got worse and the screen was rebooting and showing a error. Now have an appointment to take it back in again tomorrow because the fix worked for like 3 days and now it has gotten even worse. Screen keeps shutting down completely and wont boot back on for a few minutes.

- Spanish Fork, UT, USA

Rear tail gate hatch Anytime it rains the hatch will open and faults out which ultimately causing it to not close or open tailgate fault shows up on the dash and does not function anymore do to water collecting in electrical module that controls hatch due to faulty design

- Kings Mountain , NC, USA

The contact owns a 2018 Honda Odyssey. The contact stated that the messages "Emission System Problem", "Electrical Parking Problem", "Road Departure Mitigation System Problem", "Brake System Problem", "Brake hold System Problem", and "Power Steering System Problem" were displayed intermittently. The vehicle was taken to the dealer, who informed the contact that the battery was in good condition; however, the vehicle failed to start 3 days later. The contact was able to jumpstart the battery with the assistance of AAA. The contact replaced the battery. Additionally, the contact received notification of NHTSA Campaign Number: 23V858000 (Fuel System, Gasoline) however, the part to do the recall repair was not yet available. The local dealer and several unknown dealers were contacted. The vehicle was not diagnosed or repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the failure. The failure mileage was approximately 122,000. Parts distribution disconnect.

- Anderson, CA, USA

ADAS system is not working due to internal camera failure.

- Broken Arrow, OK, USA

A defective/leaking seal in the rear of the vehicle area caused water damage and corrosion on the tailgate control unit. As a result of the control unit failure the blinkers and lights stopped working while driving. In addition rear tailgate does not open. Dealer confirmed the issue, fixed the seal and replaced control unit. Research shows this is a recurring problem on this model vehicle.

- New Paltz, NY, USA

The vehicle had low voltage indications and electrical issues that would affect many of the electrical systems in the car (power doors, main entertainment system, etc). More concerning, the vehicle would shift into park while driving and then would shut off. This posed a serious hazard when driving quickly. Honda was unable to remedy the issue and could not come up with a definitive cause. Another recall with these same problem was issued for other VIN numbers of the same make, model, and manufacturing year. My VIN was not included in that recall. The recall needs to be expanded to include more VINs as this is an issue in 2018 Honda Odyssey vans and poses a risk to me and my family while driving in its current state. My transmission is now experiencing issues due to shifting into park while driving and needs to be replaced.

- Virginia Beach, VA, USA

2018 Honda Odyssey motorized tailgate has completely stopped working. Will not open. Numerous accounts say this is due to water getting into the rear tailgate control module and have had tremendous amount of rain this week. Have not had it looked at by dealer yet but must be fixed. Warning message appeared twice on dash 10 minutes before the failure.

- Kannapolis, NC, USA

Dash displays error message "Power Tailgate Problem". Tailgate does not open AT ALL with either of the following methods- key fob, button on dash, or button on tailgate. It is stuck and poses a significant safety issue. What if we had a accident, all doors were stuck, and needed an exit out the back of the vehicle? The tailgate is totally inoperable and Honda needs to fix this issue as it is an extremely common issue and not very cheap to repair.

- Jackson, SC, USA

The power tailgate control module failed due to water leaking through holes in the seam. The power tailgate problem light came on when the issues began. I was unable to open the tailgate using the button by the driver's controls, the remote fob, or the exterior button on the tailgate. The only way to open the tailgate was the manual release on the interior tailgate. There was constant beeping while driving forward or in reverse. We removed the power tailgate control module, and there was obvious corrosion around the entire part. We applied seam sealer on the driver side roof rail and installed a new ptg control module. The new module began having similar issues approximately 2 weeks later. We removed it, and could see obvious corrosion beginning on one side of the ptg control module. We applied seam sealer above the rear tailgate window and attempted to clean the affected areas on the ptg control module in hopes that it will work again. The power function of the tailgate is not working, but the power tailgate problem light is not on and there is no beeping. I am now able to open the tailgate manually using the exterior button on the tailgate. Driver's control button, remote fob button, and button on the tailgate to close it do not work.

- Castle Hayne, NC, USA

The vehicle has multiple warning lights and a recall was issued for the MOST connectors upon the initial problem which fixed it temporarily and now it continues to have multiple problems. It shuts off while I'm driving and the steering wheel locks up. It's as if the car is possessed the system screams at you, goes black, turns the music off and on. I have had it at the Honda twice and am taking it again in the morning. I'm afraid to drive my children in it.

- Allons, TN, USA

Power Tailgate failure, from water leaking into the vehicle. The power tailgate would open and close on its own, even when driving down the road. This is a SERIOUS safety issue if you have children in the vehicle. First sign of failure was a message of tailgate problem on the information center of the dash. That is when the intermittent opening and closing began, as well as battery going dead. Took to Honda to be serviced(Walker Honda in Alexandria, Louisiana). Was informed that water did indeed leak into the van from someplace, they did not know from where. Was told van needed a new battery as well as a module replacement for the power tailgate and a Water test to see where the water was leaking in. Total cost of around $1600 Was then informed that the entire wiring harness might also need to be replaced because water corroded or damaged the contacts on the harness that affect MANY other parts of the van, including some safety systems. That was an estimated cost of $7000 but was told the technician could possibly just clean off the wiring harness contacts and try to drive it that way and see if it fixes the problem. Van has little over 130,000 miles on it and Power Tailgate is rarely used as we have no children and don't haul much, except groceries.

- Boyce, LA, USA

For the last 3 months the car will turn on by itself and drain the battery. Went to several mechanics that could not find a reason for this issue. This weekend, while I was driving on the road, the car stopped while driving on the highway. This happened 4 times risking my life, wife, and my children. The problem has been reproduced and confirmed by other owners of this car on various forums. I have not had the vehicle inspected by the manufacturer as they are trying to charged me thousands of dollars to review the issue. There were no warning lamps or signals on the car.

- Dallas, TX, USA

The contact owns a 2018 Honda Odyssey. The contact stated that while driving at various speeds, the vehicle shut off and then immediately restarted independently. There was no warning light illuminated. The vehicle had been taken to the dealer however, the dealer was unable to identify the cause of the failure. The vehicle had not been diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 70,000.

- Middletown, CT, USA

Tailgate controller issue. 2018 Honda Odyssey: A day after a day of rain, we went out shopping and stopped at a store. Getting out, we saw "Tailgate Controller Problem" message appear on the dashboard. I tried to open/close the tailgate but it just kept latching and unlatching. I was finally able to get it to remain closed by pushing on the tailgate. After heading to another store, saw a "high-beam problem" message, and another message, so we went home. At night, I noticed the interior ceiling lights going on and off. I went to start the van, and my key fob would not unlock the door. I used the emergency key in the fob and tried opening the drivers door...after 45 seconds of turning left and turning right, the windows rolled down about an inch, then the door unlocked. I started the van and moved it up in the driveway and turned it off, and checked a couple of times all night to see if the lights came back on. The next morning, I had to charge the battery because it was at 3Vs. I drove the van to make sure the alternator was working, and then saw messages: blinking "R" for reverse blinking "D" and no turn signals, and messages appeared: "Transmission Problem". "Keyless Start System Problem","Blind Spot Info System Problem".We dropped the van off at the dealer and it would not lock with the fob, and the center dashboard console (with the navigation menu)remained on with the engine off and door closed. Dealer ordered a Tailgate Controller. When we asked the person at the desk, what the issue was..."moisture got in". I told him there is a discussion on the internet about a (design) leak in the roof causing this issue. He said, the controller is in the tailgate not in the van. But I know its on the side panel. This situation is very dangerous because a week before we had traveled with the van, out of state, on the interstate, trying to get people to airports and if these messages had appeared then, we would have had a very harrowing experience. A message is still seen

- Poughkeepsie, NY, USA

The electrical system has some weird glitch where it will shut down all the displays and more. The nav display as well as the speedometer area will shut down and restart. I will receive warning lights that many systems like the lane Keeping Assistant and accident braking mitigation systems are offline. Sometimes it will kill the engine too. This is very disturbing and unsafe to happen when driving. It could cause an accident on its own and also negates the extra safety features like LKAS added to make the van safer to drive. The problem was assessed by Honda and they said they could not find an issue originally. There were no codes. Now I am getting more problems and warnings. The dash now tells me "Engine Management System Malfunction". Honda reset this since they could not find a service code. It came back within a week and then my power steering started messing up. It seemed to be when the system was overloaded by going into reverse and switching to the backup camera. The power steering would lurch and stutter. This is very concerning to go out while driving. The final straw is now my high-pressure fuel pump has gone out causing a loud noise under the hood. My vehicle only has 120,000 which I feel is not that old for a Honda. Honda has the van today and wants $1200 to swap out the fuel pump and now they say the "Power distribution module" is causing all the electrical problems which is another $700. My question is: Is this all connected to the same electrical issue? Note: I have a suspicion that the problems are worse when the car gets too much stimulus in the electrical system. Sometimes it seems like the sun at the right angle blinds the front cameras and the system freaks out. Also, changing to reverse and activating the backup camera tends to cause the problem. Possibly even adding devices with carplay could exacerbate it.

- Rogers, AR, USA

The car stop or fall several times when doing a complete stop and may cause and accident

- Atlantic City, NJ, USA

Unknown, I was driving and the vehicle completely died without warning. And then on several occasions I've been driving and it would say crash mitigation system problem. Where my guages would go out and throw my vehicle into neutral along with my steering wheel to lock up. I've had it looked at and nothing comes up in codes. Has a new battery on it and still continues to do the same things.I have notified the corporate office of Honda and they told me they have heard of these problems. And wanted me to take to a hinda dealer ship for them to do a diagnostic test which I've already done 2 times with nothing coming up.

- Metropolis, IL, USA