2021 HONDA ODYSSEY Forward Collision Avoidance Automatic Emergency Braking Problems

My van is braking when there are no cars or dangers in front of it. Sometimes there's a metal plate on the ground or speed bump when it brakes. Other times there's nothing in front. The car slams on the brakes and I cannot override it with the gas pedal. This puts my kids and I in danger of being rear-ended. This most commonly happens around 7:30am or 4pm when I'm taking kids to school or dropping off. I'm often in the carpool like or headed to the school when the car slams on the brakes. It's very frightening. The dealer cannot find an issue and cannot replicate the problem.

Vehicle applied brakes for no reason. Lost ability to see reverse camera during backing up. Half of the instrument cluster went dim to become barely visible. Radio screen freezes randomly. Engine cuts out or shudders intermittently.

It started that all the sensor in our car started to go off. We were told we had a bad battery, even thought we had replaced it new just last year. Once we had the battery checked and alternator. The sensors started to act up again, out tail gate started to malfunction. Wouldn’t automatically close. A few weeks ago driving down the road the tail gate opened and the anti theft system started going off while the car was running and still going. Come to find out there is a water leak in the rear that has gotten into the rear fuse box and has cause substantial corrosion. The latch to the tail gate is broken. Honda is telling us our extended warranty doesn’t cover any of this, even though it is common knowledge, that the water leak is a known problem from 2018-2021. We just found out a few...

All of my assist lights just came.on one after another saying there was a malfunction with the emmision light continues to go.on go.off even after I paid 580 to have the car serviced for the assist lights. Now the lift gate stopped working three weeks ago yesterday with all the rain that poured now the lift gate is open and will.not latch.

I was driving in light snowfall when several alerts notifying me that the radar sensor was not working. This is common in snow fall. Later I cleared off the radar unit cover (The Honda logo on the front of the car). The alerts remained. I took it to the dealer and they dubiously told me it was "damaged by snow". This is impossible. It was light snow. There was no collision or impact. This device should be durable. It has no moving parts. But Honda wants me to believe that it simply stopped working from driving in a light snow. They want $1300 to replace. How do I know the next one won't conk out after the first snowfall? These units should have a lifetime warranty with only exceptions for collisions or impact damage. If the unit is damaged by snowfall, it's clearly too fragile and should not be on...

The children message that the radar is obstructed, I did the clean where is the radar is but the issue still.

After a slight rain, the error of Radar Obstructed is being displayed. Can’t get this error removed or fixed. After searching more I found out that: 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...

While driving in highway construction zones the car's lane departure system attempted to steer the car along lane markings set before the construction zone was established. In several instances this caused my car to steer, contrary to my steering input, towards Jersey barriers and dangerously close to a collision. The car's collision warning and automatic braking systems then engaged and applied the brakes regardless of following traffic. After the first instance, luckily in light traffic, I became aware of this issue and aware of how to quickly defeat these safety systems. After several additional instances, some in traffic at highway speed, I determined the lane departure system was more dangerous than helpful and I suspended it by a simple dashboard procedure. I am now able to negotiate construction zones without issue.

I was driving through an intersection. My automatic brakes activated for no reason, my car rapidly slowed down in the middle of an intersection, a bus hit my car from behind.

While driving on a straight, wide open road at approximately 45mph with no vehicle in any close proximity in front, the forward Collision Mitigation Braking System alarmed and activated and strongly braked, slowing the car quickly down to about 20mph before releasing. Fortunately, there was no one behind me to react to the unexpected slowing down of my car. There was no apparent reason why this should have activated. The CMBS has activated previously in other non-threatening situations but there was usually a condition where you could justify why it made a mistake, such as being in the left lane of a two lane road which curves to the left and a car in the right lane slows to turn right, my car thinks it is in front of me when it is not. Still, these situations result in a danger of getting hit from behind.

Exiting a construction zone (I-70 westbound near Mt. Comfort, Indiana) at approximately 60 to 65 mph, our 2021 Honda Odyssey, without warning, momentarily applied unwarranted automatic emergency braking. The brakes were actuated for (an estimated) one second and resulted in an abrupt (approximately) 10mph reduction in speed. A large SUV traveling directly us was forced to take immediate action by making a sudden lane change in order to avoid a serious collision. The involuntary braking action on the part of the vehicle placed the passengers of both vehicles in grave danger. The only warning indication provided by the vehicle was an orange-box “BRAKE” warning displayed on the dashboard and the accompanying warning beeps, both simultaneous to the actual brake actuation. No indications or warnings appeared prior to or after the actual braking. No obstacle or object on the roadway was visible to either the driver or front seat passenger. All...

The VSA modulator has repeatedly failed. When it fails, all of the safety systems report errors - air bags, ABS brakes, high beams, traction control, blind spot detection, parking sensors, etc. Additionally, the power sliding passenger doors and tailgate will not open, even manually. I have taken it into Honda dealerships on 3 separate occasions. On 6/14/21 (vehicle mileage 7,453) they cleared the error codes and reset the system and reported it was fixed. On 2/26/2022 (vehicle mileage 21,077) it happened again and they reported the VSA modulator as defective and replaced it under warranty. On 7/29/2022 (vehicle mileage 26,916) it happened again. This time the dealership disconnected and reconnected the VSA modulator and it decided it was fixed. At the time of the issue I was driving the van at approximately 30 mph on flat streets through my town. I've expressed my concerns that this defect renders the vehicle...

On numerous occasions the forward collision warning has caused hard braking when there is nothing close in front of me. I fear that a close following vehicle will hit me when this occurs. This has not caused an accident yet, but the following vehicle driver must think that I'm a terrible driver for unnecessarily hitting my brakes.

While driving with no vehicles or obstacles stopped in front of me, my car automatically braked hard.

HI THE VEHICLE SHOWS SPEED LIMIT OF 70 IN 25 OR 40MPH ZONES. THE VEHICLES SYSTEM KEEPS GOING OFFLINE EMERGENCY BRAKING AND COLLISION. EVERY TIME I TAKE TO HONDA DEALER I AM BEING TOLD TO GO SEE WHERE THE CAR WAS PURCHASED AND THEY CAN'T FIND A ISSUE.