2021 Honda Odyssey problems

“The driver sliding door would not close and would sometimes reverse direction. Eventually, it failed completely and would not close. Dealership repair involved the rear door latch and motors and cost over $2600. Two weeks later and the passenger sliding door is doing the same exact thing. This is clearly a safety issue as I cannot be sure the door will not open completely while driving. The computer receives "door open" signal even while the car is off which drains the battery. I will not spend another $2600. Over $5000 to maintain a vehicle less than 5 years old for something as simple as the use of plastic components in a door latch is ridiculous and should be covered by Honda for choosing to use inferior components.”

“Mileage: 121000 When stopped and the auto idle initiated, we have had numerous incidents where the van has shutoff and required a restart. More recently, when the auto idle initiates, the entire engine turns off and the van has no power(car won't restart, can't get the car into neutral, sliding doors and tailgate won't open). I would then need to jump start the car with my portable battery. This has occurred 4 times thus far. Honda dealership had recharged the battery but it still died and required a start. Currently in the shop and my 120k extended warranty just ran out. Very disappointing.”

“The forward collision prevention system engages the brakes when nothing/no one is in front of us. It will also engage the lane departure warning, which also engages the brakes, when construction zones remove the actual lane lines and temporary lines are put down. The car gets confused and brakes the car to a stop in the middle of a highway.”

“Active recall cannot be repaired as there is no parts after reaching out to four local Honda dealerships in the upper Annapolis, Md area. Have been added to the "list" of owners needing the recall completed for about a year and a half now.”

“After the MOST/FAKRA recall (NHTSA 23V-431) was completed, the center display showed a MOST bus/network loss message, then the infotainment system went dead and will not power on. The dealer would like 1800$ to repair this already "repaired" safety system. The rearview screen is unavailable when the screen is blank which is the same FMVSS 111 rear visibility failure the recall was issued to correct. TSB 20-049 describes the same network loss/ display condition. The recall repair did not permanently fix the MOST ring.”

“In mid-March 2026, the power tailgate on my [year] Honda Odyssey lost power entirely. It does not respond to the key fob, the tailgate button, or the dashboard button — it will not open or close by any control. I personally inspected the tailgate area and found corrosion and rust present, consistent with prior water intrusion. I have since learned that this is a widely reported issue among 2018–2021 Honda Odyssey owners, and that a class action lawsuit ([XXX] v. American Honda Motor Co., Inc., filed in the U.S. District Court for the Central District of California) alleges a defect in rear body seam seals that lets water leak into the power tailgate control module, causing it to fail. The symptoms and physical evidence I found match those described by other owners and in the litigation.”