2020 HONDA ODYSSEY Complaints

I am submitting this complaint to report a serious safety defect involving my Honda Odyssey equipped with Honda Sensing technology. During normal operation and without any accident, impact, windshield damage, repair, or environmental event, all Honda Sensing safety systems suddenly and simultaneously stopped working. The disabled systems include Collision Mitigation Braking System, Adaptive Cruise Control, Lane Keeping Assist, Road Departure Mitigation, Forward Collision Warning, and related camera- and radar-based features. Multiple warning messages appeared, and the vehicle effectively lost all advanced driver-assistance and collision-avoidance capabilities at once. This occurred without warning and without any action on my part. This failure is extremely concerning because Honda Sensing features are marketed and relied upon as critical active safety systems intended to help prevent or mitigate crashes. A sudden, total loss of these systems materially reduces vehicle safety and places occupants and other road users at increased risk. A safety system that can fail entirely and unexpectedly—absent any triggering event—indicates a potential systemic defect, not routine maintenance or wear. I am concerned this issue may affect other Honda vehicles equipped with Honda Sensing and may be related to a common failure in cameras, radar units, software, or vehicle electronics. I respectfully request that NHTSA review and log this complaint, investigate this failure pattern, and determine whether a defect investigation, service bulletin, or recall is warranted in the interest of public safety. Vehicle details: Make: Honda Model: Odyssey Model Year: 2020 Mileage: 87000 VIN: [XXX] Thank you for your attention to this serious safety matter. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

All of my ADAS systems were disabled due to a water leak. The repair required the dealership to hire a "leak doctor" and then replace a module in the rear tailgate. My vehicle showed an alert on the dash that each of the ADAS features were disabled, auto high beams were disabled, and I could not turn the vehicle off by pushing the start/stop button once, I had to use a procedure that forced the vehicle to shut down. My interior dash lights flickered, I'm not sure if the headlights worked. As the interior dried out, the flickering occurred less frequently. I was able to drive the vehicle to a Honda dealer for repairs.

My Multi-Purpose Camera System has gone bad after only 5 years. Collision mitigation, cruise control, brake system, lane keep assist, among other safety features are failing because of this.

Multiple warning lights, all for the safety system: ACC, automatic emergency braking, etc. I am told by the dealer that this is due to a faulty forward camera. Looking at the NHTSA site and other forums, this is a VERY common issue and should be addressed.

The Multipurpose Camera Unit has failed resulting in loss of Adaptive cruise control, lane keep assist, Automatic braking and other features related to the MCU. The dealer inspected the car and confirmed the issue was a bad camera. There are approximately 6 warnings when starting the car of features not working, and 3 lights that remain lit on the dash including "Brake System".

Upon start up my 2020 Honda Odyssey EX-L throws a slew of pop-up’s on the dash (collision mitigation problem, auto high beam problem, adaptive cruise control problem, lane keep assist problem, road departure mitigation problem). It's been doing this for months, but when it started, I had just gotten an oil change 2 weeks prior and knew my mechanic would've caught this if it was something major. Last week I took it back in for another oil change and asked them to check these errors. They checked the battery and it’s fine (under 2 years old), but they confirmed it's the adaptive cruise control camera. They said not many places work on those cameras and I'll have to have the dealer do the repair. Well upon searching, it seems pretty consistent that this repair is costing owners $1700 because the camera has to be recalibrated with the software after it's replaced. I'm also seeing this problem appears to be widespread for Honda owners. Honda needs to do something to make this right for their customers. A $1700 repair for a camera that randomly dies by no fault of the owner is insane, and considering how many driver assistance systems to improve safety are affected, Honda should be held accountable. [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2020 Honda Odyssey. The contact stated that the passenger’s and driver's side sliding doors were frequently not opening or closing as designed or intended. The contact had noticed the failure approximately 2 years prior; however, the failure was intermittent but had since gradually become more frequent. The contact had taken the vehicle to a local dealer, where it was diagnosed, and it was determined that the pinch sensor needed to be replaced. The vehicle was not repaired. The contact was no longer using the sliding doors out of concerns that the doors would remain open. The manufacturer was informed of the failure and referred the contact to a dealer for assistance. The failure mileage was approximately 55,000.

Upon starting the vehicle, it failed to engage in reverse. Although the backup camera activated, the vehicle remained stationary. After multiple ignition cycles, the vehicle eventually engaged in reverse and then moved forward in Drive. However, shortly after, the vehicle experienced a sudden loss of power and entered "limp mode," restricting speed to approximately 15–20 mph regardless of throttle input. The engine revved excessively high without corresponding acceleration, and a severe burning/heat smell emanated from the transmission/engine compartment. This failure occurred without any prior warning; notably, no dashboard warning lights or "Check Engine" indicators illuminated to alert the driver of a mechanical or electronic fault. The sudden, un-signaled drop in speed on a public roadway created a significant safety hazard for following traffic and risked a rear-end collision. The vehicle was towed to a certified Honda dealership where the Transmission Control Module (TCM) was diagnosed as failed. The TCM is currently being replaced under the Honda Certified Pre-Owned (CPO) warranty. We do not know what else requires replacement and repairs. The dealership will not cover the replacement of the transmission fluid, or engine fluid, despite the fluid being subjected to extreme heat and potential damage during the failure and subsequent limp mode.

Car would randomly die while I was driving, causing my children and I to be in severe danger in the middle of a busy road multiple times

This is now the second time that we are having a rear hatch failure. with about 37,000 miles on this van, the control module shorted out due to water getting into it due to a bad seam (according to other Odyssey owners who are suing Honda for this). We could not get the hatch to open or close, so I paid the dealer to fix it. Honda did give us a check after the fact to cover some of the bill. Now, with less than 51,000 miles, it has happened again. The hatch will not open or close. In the event of an emergency, this is a major safety issue, to be potentially stuck inside the cabin. The hatch started going up and down randomly, and we could not control it. Now, it won't go up or down. This van is is a mess. Not only does it have this issues, but the rear back up camera still does not work, even though it was recalled...they would not honor their recall, and the brakes occasionally come on without cause, when going around a corner and there is oncoming traffic. It thinks that we are headed for a collision, and it's another safety problem here in the northeast. Honda needs to own up to their quality problems relative to these three safety issues.