The contact owns a 2023 Honda Odyssey. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. The contact stated that the brakes independently activated. The contact stated that the failure had occurred while driving on a busy highway. The vehicle was taken to the dealer; however, the contact was informed that there was no fix for the failure. The contact was informed that the failure was a known failure with similar vehicles. In addition, the contact was advised to disable the forward collision avoidance feature. The contact was informed that the forward collision avoidance system occasionally malfunctioned. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The contact stated that the failure was a safety hazard. The manufacturer was made aware of the failure. The failure mileage was approximately 10,000.
2023 Honda Odyssey: false forward collision warnings
10 of the 107 complaints about the 2023 Honda Odyssey describe false forward collision warnings.
- owner complaints
- 10
- of this car's complaints
- 9%
- recalls
- 1
False forward collision warnings by model year
What owners say
failed windshield monocular cameras, Collision Mitigation LKA Adaptive cruise Lane Departure Mitigation Auto High Beam
8 warnings/problems all at once: Adaptive cruise control Brake hold system Vehicle stability assist Power steering system Hill start assist Collision mitigation system Road departure mitigation system Brake system
This is regarding the Collision Mitigation Braking System (CMBS) I will be driving on side streets around town (driving kids to school and daycare) and there will be no vehicle/obstacle near me/ in front of me and my van will flash on the dashboard "brake" and then it slams on the brake. This has happened at least 5-6 times as of todays date 5/20/25. There is no warning or reason for the car to brake like this. I have brought this to the Honda dealer two times now once I realized how serious this was. I was informed that since it isn't throwing a code there is nothing they can do. This is a serious safety risk not only to myself but to my children- this is a van so most people who drive this have small children. The last two incidents i was inches from being rear ended with my children in the car. The time before that I had my family from out of town in my car, that could have been eight people seriously injured or killed for no reason.
The present complaint alleges as follows: 1. Honda has a defective design in the Advanced Driver Assistance Systems (ADAS) of all Honda Odysseys, models 2018-2023. 2. Namely, Honda has placed the RADAR behind the large HONDA emblem on the front grille. This causes the radar to give a "RADAR OBSTRUCTED" warning, which disables all Advanced Driver Assistance Systems in the car (Automatic Emergency Braking, Adaptive Cruise Control, Forward Collision Warning). 3. The "RADAR OBSTRUCTED" warning cannot be reset by restarting the vehicle or disconnecting the battery, requiring recalibration of the RADAR at the cost of $800 each time since it takes several hours to do (per Dealership). 4. The official Honda Odyssey Forum online has countless complaints on the same issue without resolution by Honda. 5. Honda has acted in bad-faith towards their customers since this defect impacts the vehicle's advanced safety features for which buyers incur additional expenses, endangering the lives of passengers. 6. Honda has acted in bad-faith towards their customers by designing a system that requires continuous and substantial expenditures without resolution because it is an engineering problem, i.e., the placement of the radar behind the large, thick plastic H emblem obstructs the radar. 7. I hereby ask that the federal safety agency investigate this issue and order Honda to offer a solution in the form of a RECALL that permanently addresses the problem.
The present complaint alleges as follows: 1. Honda has a defective design in the Advanced Driver Assistance Systems (ADAS) of all Honda Odysseys, models 2018-2023. 2. Namely, Honda has placed the RADAR behind the large HONDA emblem on the front grille. This causes the radar to give a "RADAR OBSTRUCTED" warning, which disables all Advanced Driver Assistance Systems in the car (Automatic Emergency Braking, Adaptive Cruise Control, Forward Collision Warning). 3. The "RADAR OBSTRUCTED" warning cannot be reset by restarting the vehicle or disconnecting the battery, requiring recalibration of the RADAR at the cost of $800 each time since it takes several hours to do (per Dealership). 4. The official Honda Odyssey Forum online has countless complaints on the same issue without resolution by Honda. 5. Honda has acted in bad-faith towards their customers since this defect impacts the vehicle's advanced safety features for which buyers incur additional expenses, endangering the lives of passengers. 6. Honda has acted in bad-faith towards their customers by designing a system that requires continuous and substantial expenditures without resolution because it is an engineering problem, i.e., the placement of the radar behind the large, thick plastic H emblem obstructs the radar. 7. I hereby ask that the federal safety agency investigate this issue and order Honda to offer a solution in the form of a RECALL that permanently addresses the problem.
While driving 35-40 mph, the car started acting strange, shaking and multiple alerts began appearing. No cars were around me and I was able to get the car over to the shoulder quickly. (Mileage 35,483. Owned car 20 months) Messages appearing: Electric Parking Brake Problem, Adaptive Cruise Control Problem, Road Departure Mitigation System Problem, Collision Mitigation System Problem, Hill Start Assist Problem, Emissions System Problem, Electric Parking Brake Problem, Electric Power Steering Problem, Vehicle Stability Assist Problem, CMBS Problem. I turned car off and on, multiple times, hoping it was a fluke, but car was shaking and messages kept appearing. I called Honda Roadside & car towed to dealership. Was told internal failure of oil pump was the problem. Techline reported Multiple vehicles with same codes and same motor have had the same problem. Replacement of spool valve, valve cover gasket & valve was the fix. This may be a future recall. Car drives fine now after being repaired!
The present complaint alleges as follows: 1. Honda has a defective design in the Advanced Driver Assistance Systems (ADAS) of all Honda Odysseys, models 2018-2023. 2. Namely, Honda has placed the RADAR behind the large HONDA emblem on the front grille. This causes the radar to give a "RADAR OBSTRUCTED" warning, which disables all Advanced Driver Assistance Systems in the car (Automatic Emergency Braking, Adaptive Cruise Control, Forward Collision Warning). 3. The "RADAR OBSTRUCTED" warning cannot be reset by restarting the vehicle or disconnecting the battery, requiring recalibration of the RADAR at the cost of $800 each time since it takes several hours to do (per Dealership). 4. The official Honda Odyssey Forum online has countless complaints on the same issue without resolution by Honda. 5. Honda has acted in bad-faith towards their customers since this defect impacts the vehicle's advanced safety features for which buyers incur additional expenses, endangering the lives of passengers. 6. Honda has acted in bad-faith towards their customers by designing a system that requires continuous and substantial expenditures without resolution because it is an engineering problem, i.e., the placement of the radar behind the large, thick plastic H emblem obstructs the radar. 7. I hereby ask that the federal safety agency investigate this issue and order Honda to offer a solution in the form of a RECALL that permanently addresses the problem.
Forward Collision Warning in conjunction with Emergency Braking have major safety issues that need to be addressed. 1st occurance: Driving through a construction zone through cones for lane realignment, van suddenly applied brakes in heavy traffic despite no obstacles in vans path. Vehicle quickly recovered. 2nd occurance: Driving on a dark street, van heavily applied brakes despite no obstacles. The braking occurred rapidly and van nearly came to a stop. Attempted to press harder on gas to override system with zero results. Had I been on a busier street, it would have resulted in a vehicle crash. This is a major safety issues that needs to be addressed by Honda with a recall.
While accelerating, well after a car far infront of me turned, the forward collision warning went off and automatically applied full breaks while I was accelerating slamming my legs into the dash. My kid has marks from his car seat. This is 3rd and most sever instance of this almost causing a severe crash behind me. While I hate the automatic idle stop function and want it gone, it hasn’t worked in 4 week and randomly started doing it today and now stopped again. The AC in the seets also stopped working when temps hit 110 in Phoenix.
Related recalls
Back over prevention: display function
- What is wrong
- Honda (American Honda Motor Co.) is recalling certain 2018-2023 Odyssey, 2019-2022 Pilot, and 2019-2023 Passport vehicles. Due to a faulty Media Oriented Systems Transport (MOST) communication coaxial cable connector, the rearview camera image may not appear on the display. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
- Risk
- A rearview camera that does not display an image can reduce the driver's rear view, increasing the risk of a crash or injury.
- Remedy
- Dealers will replace the MOST cable harness and install a straightening cover over the vehicle cable connector, free of charge. Owner notification letters were mailed July 24, 2023. Owners may contact Honda customer service at 1‑888‑234‑2138. Honda's numbers for this recall are EEL, ZEM, and SFC.
Recall number 23V431000 · Recall details
Questions about the 2023 Honda Odyssey collision warning
Is false forward collision warnings a common problem on the 2023 Honda Odyssey?
10 of 107 owner complaints about the 2023 Honda Odyssey (9%) mention false forward collision warnings. The model year with the most reports is 2018.
Is there a recall or service bulletin for this on the 2023 Honda Odyssey?
There is 1 recall and 0 service bulletins for the same area of the car. Check them below with your VIN.
Other symptoms on the 2023 Honda Odyssey
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