2021 HONDA PASSPORT Forward Collision Avoidance Automatic Emergency Braking Problems

One day the lights just started flashing. Took to dealer and was told that someone must have backed into me and would be about $2500 to replace the camera (which is behind the windshield). Occasionally it will function but clearly seems to be a malfunction. In research online there appear to be many others that have experienced the same issue - can’t just be a coincidence. Shouldn’t happen on a reliable four/five year old car

Was driving 47 mph at 12:35 EST on a clear sunny day and car braked automatically. No car in front of me.

Car slammed on brakes while on interstate, the system likes to say brake, brake, brake, when there is nothing to brake for but a few days ago it actually took action and slammed on brakes on the freeway.

When I turn on the car, the "BRAKE SYSTEM" warning light appears, along with several alerts that disable all Honda safety features, including: 1. Road Departure Mitigation System Problem 2. Auto High-Beam Problem 3. Adaptive Cruise Control Problem 4. Lane Keeping Assist Problem 5. Collision Mitigation System Problem After taking the vehicle to a Honda dealership, the diagnosis was a failure of the Multipurpose Camera Unit and/or the Millimeter Wave Radar. Unfortunately, this is a common issue affecting several Honda models, including the Clarity, Fit, Pilot, Passport, and CR-V. Due to high demand and limited supply, the camera unit is currently sold out nationwide with no estimated restock date. Repairing this issue is expected to cost approximately $2,600, with no set timeline for when the parts will become available.

The vehicle infotainment system froze. Several minutes later after driving, I pressed the brakes but they did not function. The vehicle would not stop and crashed into the vehicle in front of me. Emergency braking did not engage or otherwise show signs of activation. After turning off the car and dealing with the accident, I restarted the vehicle and the brakes and infotainment system operated normally.

My automati braking has repeatedly malfunctioned and deployed emergency braking when no other vehicle is in the front of mine

The contact owns a 2021 Honda Passport. The contact stated while driving at 22 MPH, "The Collision Mitigation Braking System" warning message illuminated. The contact stated the vehicle applied the emergency brakes independently. The vehicle was not diagnosed or repaired. A dealer was not contacted. The manufacturer was notified of the failure. The approximate failure mileage was 25,950.

The automatic emergency brake system will randomly activate despite there being nothing in the way, no car in front, and no obstruction. It causes the car to slam on the brakes for no reason which I’m afraid will cause someone to hit me from behind.

- Automatic braking system flashes warnings for no reason, with no cars around me - Parking break hasn’t taken a handful of times - No collision warning when parking brake didn’t take, front end is now damaged ** I have dash cam proof I hit the parking brake before I collided with the vehicle in front of me in the school line. Husband glued the grill pieces together to keep them from overlapping.

On my way to work I was on the highway and five warning lights came on out of no where. All five warnings were the safety assist systems had problems. I drove to the Honda dealership and found out it was my microchip for my honda,the main microchip for all of the safety and system controls were dead/bad and that it would need to be replace. I was told by the service manager that without the micro chip the vehicle would no longer be drivable as it controls power steering system, brakes system, lane departures, etc. If I would have ignored those warning lights, all of those systems all systems would have failed putting my life at risk and others in their vehicles as well . My vehicle was bought with 3 miles on the speedometer and was only 2 years old at the time of this occurrence.

I have encountered two types of brake issues: 1) my vehicle seems to flash BRAKE occasionally when oncoming vehicles pass by for no reason - they are not entering my lane or doing anything that should cause the message to flash. The vehicle type does not seem to matter - they have been old and new models, and have been both cars and trucks. My vehicle has only visually warned, but does not engage brakes, so no further safety issue is involved. It has done it frequently on some days and then none for awhile. We have tried to make note of vehicle type and model for consistency, but have not found any. 2) If my vehicle has its cruise control on (which is often) and a vehicle in front of me moves into a left-turn lane to turn - often with plenty of notice - my vehicle will engage...

Since purchasing the vehicle in December 2023 with ~36,000 miles there have been two instances where the automatic brake warning has activated. Both events occurred while entering a corner between 30-50 mph with no other vehicle in the area or obstructions to be noted. The passport briefly activated the automatic brake warning, with the flashing indicator occuring on the main dash display for roughly 3-5 seconds. Following this brief period of indication the vehicle returned to it's normal operation. No accidents or injuries were sustain from these spurious events.

I have had multiple instances where the car appears to engage the brakes to prevent a collision, although I don't see any obstruction. It also makes the alarm sound indicating that I should brake as well. This occurs only on highways at highway speeds. It lasts for a few seconds and the car slows down significantly.

The forward colision warning comes on for no reason and brakes are getting applied for no reason. Very dangerous and can cause a rear end crash.

The passport flashes BRAKE and steering wheel shakes for no reason. I’ll be driving down the road nothing near and it does this. A few times it’s actually applied the brakes. Thank goodness no one was behind me as it potentially could have caused an accident. This occurs daily. Especially if I am driving on a 2 lane road

The emergency collision system constantly actives when there is no need for it to activate. It’s more of a safety hazard. I have just under 40 years of driving experience, former mechanic, and police officer for over 20 years. My professional opinion is, Honda needs to correct this problem. Thanks.

The automatic emergency braking system will turn on when there is no danger. It happens often. The system is fooled easily. Yes it’s available for inspection. How was your safety or the safety of others put at risk? With normal driving conditions this is not a huge problem but if this were to happen with slick roads. I could see this causing an accident. Has the problem been reproduced or confirmed by a dealer or independent service center? No - I’m not sure how this would be done. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? No Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No

No warning messages on dashboard. The drivers side mirror goes off like there's something there but there's nothing. Same with the braking display light comes on when I'm no where near anything, yet I've had cars pull out in front of me thankful no crash has happened because it doesn't go off then. I plan to take it into the dealership soon. I can't give an estimate of how long exactly it's been doing this. Especially side mirror warning. That's been going on. The braking thing has probably been a month now

The sensors simply don’t work. CMBS system constantly raises warnings, often alarming me as a driver, almost creating accidents. On one occasion, coming into a turning lane of intersection with green arrow and cars moving forward into left turn, CMBS actually applied the brakes for about 1 second, alarming me and causing the driver behind me to react as well. There’s no permanent disabling of this feature, which is a mistake by mfg, and we often forget to turn off starting each drive. Blind spot is often throwing false alarms. Lane detection too, but we permanently turn off lane detection.

Under many normal driving conditions, the front collision brake system activates. This has almost caused a collision as it shakes the wheel and applies the brakes.

When driving my vehicle the emergency braking system alerts and initiates the brakes at inappropriate time. While driving on a straight road with a curve ahead if there is a car coming the opposite direction around the curve the braking system will engage. I am not at the point to go into the curve yet so my steering wheel is still straight. If I have starting to turn it will not engage. This happens daily as it is a road I take to work. This has been happening since I purchased the vehicle in January 2023

When the passport is in cruise control I have been driving up a very steep mountain and have had the car slam on brakes with no indication to the cars behind me or me intially causing everyone to come to a halt going up a mountain with a 9% incline. I realize you can adjust the distance but it still gives no warning and it is not as if you are tailo the car in front. I turn in my subdivision daily and if I let off the gas which I have to I the neighborhood and not have to break at five or ten mph something underneath feels as if it is catching like a bike break too close it scrubs. The final thing. I have started the car remotely many times. I have done it twice in parking lots and it has jumped forward . Had someone been...

We drove about 100 miles yesterday. It all happened. False Brake light flash and brake applied because of oncoming traffic. Heavy brake application because of car in the left lane making a turn. Can't tell you how many times I've almost been rear ended, and people blasting their horns at me because this foolish car slams on the brakes for no reason. People think I'm brake checking them. Had 2 Hyundai before this, never encountered this. Honda needs to be forced to fix these issues. There are hundreds of similar complaints in online forum about this problem. This has happened many times, especially on an extended trip, like yesterday, over 100 miles round trip. Dealers do not have a fix for this. Honda needs to be forced to address this and fix all problem vehicles.

I don't know which system failed or malfunctioned. It is available for inspection. While parking at the community parking lot the car accelerated. I wan't able to stop it. It jumped a bumper stop than a curb and drove up a berm and crashed into a tree. (The incident is on film at the clubhouse). I was the only one injured. My knee broke the underside of dashboard (see phpto). I did have other bruises. The vehicle is still at the collision repair shop so it hasn't been seen by the dealer. However I did report the matter to American Honda who assigned a case #13707324 on 3/17/2023. As of this writing I am told they haven't assigned same to a representative. To the best of my knowledge the vehicle has not been inspected. There were no warnings given.

On October 29, 2022, the CMBS emergency braking system slammed the brakes on for no obvious reason. This happened at least four or five times while traveling eastbound on I-40 in AZ. There were no cars in front of or changing into my lane. After it happened a few times, I called the dealer RSM Honda in Rancho Santa Margarita, CA, where i service the car to see if i could turn it off. They suggested reducing the sensitivity, which I did. After changing the sensitivity, I still experienced two or three more incidents of surprise emergency braking for no reason. After the fifth or sixth incident, I pulled over and searched a pdf copy of my owners manual and found a way to turn off the CMBS with a button on the dash. This worked to stop the braking incidents, but I had to do it over again every...

i have had two incidents of the CMBS slamming on my brakes on my 2021 Honda Passport, EXL, with no threat to warrant the incident. It locked the brakes instantly and I was injured mildly the first time and the second time caused medical bills, a cervical neck epidural injection and injury to my shoulder with still does not have full movement. The first incident occurred on a busy through street and a small car about 1/2 block in front of me did a tight U turn and proceed along the medium on the other side of the street and I was also next to the concrete medium on my side of the street. My car went into full slamming on my brakes, with no warning light o and I had no control of the car. I was very fortunate that the car behind me was about two lengths back...

Last year my wife and I purchased a 2021 Honda Passport. For the past year we have complained to Honda that the sensor for the Brake Assist was not working properly when the vehicle is in a curve. The sensor could not distinguish the vehicle's lane of travel and would sense oncoming traffic in the other lane as though it was in my lane, and would flash "Brake" with a high pitch alarm. Up until last month, this was only an annoying issue. We complained to the dealership, who said they know about the issue, but Honda does not have a fix. We were under the impression the problem was only a passive issue. Given the lack of vehicle inventories, we decided to keep the vehicle. Two weeks ago, the sensor caused the vehicle to abruptly brake, causing an extreme change of speed from 65 mph to 45-50 mph. My...

Car will brake when no one is near sometimes jamming on brakes. I reported it to dealer 2 times. They said no software updates avalable and no codes showing a problem. I left the dealer and drove less than 2 miles down the road when the brakes can on again. I returned to the dealer again when they informed me there is nothing they can do. Maybe I have a fly on the sensor setting it off. I replied don't try to BS me, I'm a CDL Driver for over 40 years.

I purchased a 2021 Honda Passport Sport on April 30, 2021. Since purchasing the Passport, we have experienced a "Phantom Braking" problem, in which the automatic emergency braking system is deployed for a few seconds. This occurs several times a month. We have taken the Passport to a Honda dealer and they claimed that there maybe some type of obstruction on the emergency braking system camera that is causing the problem. We have not seen any obstruction on the camera and clean it regularly, but we still experience the braking issue. While no serious incident has occurred to date, we are extremely concerned that the braking issue could cause our Passport to brake and be rear ended by a car behind us.

My son was driving on the highway with the adaptive cruise control on. The car in front of him stopped suddenly. The dashboard screen system flashed the word "brake" but not in enough time for him to react. He braked hard but he still rear-ended the car in front of him. The problem has not been reproduced or confirmed because the car is no longer drivable. It is sitting at my house waiting for repair of $7,700 damage. I thought the "Honda Sensing System," the combination of the adaptive cruise control and emergency braking, was supposed to bring the car to a halt. My son and his 3 friends were put at risk. I'm very disappointed in the car.

TL* THE CONTACT OWNS A 2021 HONDA PASSPORT. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS, THE COLLISION MITIGATION BRAKING SYSTEM INADVERTENTLY AND FORCEFULLY ACTIVATED AND THE STEERING WHEEL WOULD SHAKE. THE BRAKE WARNING LIGHT WAS ILLUMINATED. NORM REEVES HONDA SUPERSTORE VISTA (401 W VISTA WAY, VISTA, CA 92083) WAS MADE AWARE OF THE FAILURE AND INFORMED THE CONTACT THAT THE COLLISION MITIGATION BRAKING SYSTEM ACTIVATED IN ERROR, SENSING A POSSIBLE COLLISION. THE CONTACT WAS ALSO INFORMED THAT THE FAILURE OCCURRED OCCASIONALLY WITH CURVES IN THE ROADWAY OR WHEN A METAL SIGN WAS DETECTED. THE CONTACT WAS INFORMED THAT THE FEATURE OPERATED AS DESIGNED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 4,300.