2021 Honda Odyssey Other Problems

Your Odyssey's Idle Stop system (which shuts off the engine at red lights to save fuel) is completely shutting down the engine and requiring a full restart while you're stopped in traffic. This happens without any warning lights or messages, leaving you stranded at intersections. The dealership has inspected the vehicle but hasn't provided a fix. This could involve replacing or reprogramming the Idle Stop system components, battery, or related electrical connections.

Your dealership has been unable to complete a recall repair on your 2021 Honda Odyssey because the required parts are not in stock. This recall has been outstanding for over 18 months without resolution.

Your Honda Odyssey's auto-stop fuel economy feature sometimes fails to restart the engine when it's supposed to. When this happens, your engine stutters, stalls, or shuts down completely—sometimes at intersections or on highways—with no warning until the engine stops. This has occurred multiple times over several months even after Honda replaced your battery. The repair will likely involve diagnosing and replacing the starter motor, auto-stop control module, or related electrical components that manage the engine restart function.

There is a message that pops up in our front touch screen panel " com.honda.auto.hars has stopped" which is not allowing us to use the touchscreen panel.for anything - from making or receiving calls , navigation , etc .. , which makes it hazardous to drive the vehicle on the road & not able to use hands free. We tried factory reset & also using USB drive to update , but the car is not recognizing the USB drive & also says that our system is up-to-date!! We are not able to find a solution . Please help . Advice needed.

Took my car to dealer 4/15/2024. Dealer stated no stock parts available. Dealer never contacted me anymore.

The power trunk stopped working. The car starts warning me about a power tailgate problem. I have seen this issue reported by others as well. The warning light comes and goes randomly. The power trunk does not work at all anymore I have to open and close the trunk manually. I am concerned about the trunk malfunctioning further.

Power tailgate problem displayed on dashboard. Suddenly stopped working. Constant dinging noise when driving.

After having the Honda Dealership perform an oil change and software update 23-008 (updating the Auto Idle Stop Software) last week, my engine stalled while at a busy intersection (PA turnpike/70 junction) during a road trip. At the long stop light the auto idle function engaged and the engine turned off. When the stop light turned green and I lifted my foot off the brake and pressed the gas the engine shut down and automatically went into Park. I had to press the start/stop button to fully turn off then turn back on the car to get the engine to restart. This is with a giant semitruck honking right behind me. The auto idle feature does not work. It sounds terrible every time the engine restarts after it has been engaged. There really should be an option to allow users to permanently disable it, and not have to remember to turn it off every time they start the car--terrible user experience.

The 2021 Honda Odyssey with the VIN provided had 1) Auto Stop Idle Failure in June 2023 where the car would turn off completely at a stop (intersection, stop sign, etc.) and the car would have to me restarted. Sometimes restarting more than once. Honda replaced the car battery and conducted a software update. 2) About 7 months later in February 2024 the dashboard displayed two warnings A) Auto Engine Idle Stop System Problem and B) Charging System Problem. Honda had performed a second software update just prior to the second occurrence on 1/25/24. As of 2/15/24 Honda still has the car and is going to replace a battery sensor.

Recall for driver side view mirror completed. However the replacement mirror is distorted and causes blurred, wavy, double images. This replacement mirror needs to be addressed as soon as possible since proper representation of objects is distorted and poses a high safety concern. This issue has been reported in several forums as well.

The front windshield cracked on its own on [XXX] evening around 8 pm while the vehicle was parked. I stopped at gas station to fill gas. When I was done pumping gas and sat in the car, I can hear the crack unfold and could not believe my ears and eyes. A big crack on bottom side of front windshield. Crack is smooth to touch both inside and outside but clearly visible. No object struck the windshield. The temperature was very frigid here in cleveland, ohio at that time. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

My sunroof exploded on my 2021 Honda Odyssey while I was driving on the interstate, I-10 East, on Dec 16, 2023, around 4:30 pm. There was no impact from a rock or other debris. There was no rain or hail present. I was not near an overpass. I was driving and heard an explosion above me and then heard outside air like the windows were open. The center of my sunroof exploded and shattered onto my sunroof cover.

The rear view mirror on the windshield After I had the service work done for the recall, The rear view mirror on the windshield keeps breaking and hanging down. This causes hazardous conditions while driving. I took the vehicle for an oil change, and to correct the recall problem. The mirror fell apart and hung from the windshield shortly after that. The shop has confirmed that this is the part they worked on for the recall. Bisbee Honda of Danville, VA, has attempted to fix the problem 3 times. They have only been able to “stick it back together”. It causes a safety hazard as it cannot be adjusted. Meanwhile, per the service department, they initially ordered the wrong part, and failed to call me when it arrived. The (hopefully) correct part is now in backorder and per the service manager, it could be days, weeks or months. I guess it’s stuck back up with super glue or Velcro and I’ve been advised not to touch it…

The rear lift gate will be open and then all the sudden decide it needs to be shut. Beeps really load and then come down hard and fast with no real time to recognize what is happening and get out of the way. It hurts and doesn’t stop when it hits a person

UNKNOWN There is a cracking noise in engine at low speed (slow acceleration after stop). Much like this video https://www.youtube.com/watch?v=kl9D0PzOxHU&t=1s The dealer would not acknowledge it as a problem and call it by design. They say a lot of cars with this engine develop this sound. This started happening after 6000 miles.