2021 Honda Passport Driver Assist & ADAS Problems

I bought my car in 2021. Two weeks ago 4-5 dashboard signs came up on my screen. I contacted local dealer and they said they need nearly $3000 to fix it. I told them it’s a safety issue and they refused to budge. I complained to Honda through X and they refused to help me. They are not taking it seriously

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.

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

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.

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.

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 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

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’ve had several incidents where my vehicle has forced me to a screeching hault when not needed. Most recently it did, and I was almost rear ended by a large UHaul truck while my baby was in the backseat. This is extremely dangerous. This anti-collision system activates while on turns and when nothing else is happening around the vehicle. This is a safety feature that makes the vehicle more unsafe.

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

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.

The Forward Collition Mitigation System is constantly braking on its own for no apparent reason. It happens a lot when going around a slight right turn and it interprets cars coming the opposite direction in the other lane as a trigger to start braking. It is a very dangerous situation each time, so I turn off that feature every time I start driving now to avoid it.

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.

Driving 65mph on 3 lane highway in l=far left lane in light snow with anti-collision on. Then instantly car auto braked, car slowed dramatically very fast and despite me stepping on gas pedal, car continued at a crawl on major highway. Fortunately no car was close behind or it would have hot me with such rapid decent. I moved to the right shoulder across 3 lanes and car continued to be unresponsive to gas pedal. Honda stated that front camera must have been covered and thus system operated correctly. They did say gas should have responded when I turned the wheel, but it did not. Honda said it won't respond to gas pedal, but this is very dangerous and takes control from driver. The system should be a help but never take control when driver directs otherwise. Had there been more and closer traffic, an accident would have been likely

The contact owns a 2021 Honda Passport. The contact stated while driving 30 MPH, the Forward Collision Avoidance system erroneously activated. The contact stated the brake warning light was illuminated. The contact took the vehicle to the local dealer however, the mechanic was unable to duplicate the failure. The contact continued to experience the failure. The contact took the vehicle back to the local dealer and the distance of the Forward Collision Avoidance system was extended. The vehicle was repaired but continued to experience the failure. The contact stated the vehicle had been taken to the local dealer three times, but the vehicle continued to experience the failure. The manufacturer had not been informed of the failure. The failure mileage was unknown.

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 time I restarted the engine after stopping for gas, etc. This scared me and was dangerous as this would happen while i was going 70 mph. I think every instance occurred while I was passing a "big rig", but I was never in the same lane as the truck. Sometimes it was on a very gentle curve, but other times we (truck and I) were both going straight down a straightaway. I had done similar trips previously in February, June, and July without having this issue, but had it happen multiple times on my October trip as described above.

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 wife struggled to keep the vehicle in the lane of travel. We spoke to the Honda dealership, who advise this active response is also a known issue, especially at night, and there is nothing they can do about it. We asked about a recall notice or fix. The dealership said there is nothing from Honda Corporate. The dealership service department commented that the sensor has issues distinguishing the vehicle's lane of travel, especially at night, and can cause the active braking. Our frustration is with the obvious severe safety issue. My wife and son almost struck another vehicle on the freeway because of this. Had we known about this safety issue, we never would have purchased the vehicle. Honda never disclosed this safety problem to us at the time of sale, and has never made any attempt to communicate this issue to us.

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 and also braked fast enough to avoid a collision. They did honk, yell, etc., as I was pretty stunned and finally realized I should turn off my car to be able to drive again. I had a very sore neck and shoulder but thought it would clear up. I was driving apx 30 mph. I try as a rule to remember to disable this CMBS every time I get in the car but a month later I forgot The second time it happened, I was actually on the same street, same speed and there was a jacket in the road. Looked like a man’s winter jacket. As I got right up to it, I only needed to correct a little to not run over the jacket with the driver side tire. Exactly when I did that the brakes slammed on and I came to an instant stop and the brakes again locked. This time my injury was compounded and I have since seen two doctors, had an MRI and cervical injection done and my shoulder is not fully functioning yet. I got the car to dealer after the first incident, but was told there was nothing they could do. Waiting until I got thru all the doctors appointments and testing after the second incident, which took about seven weeks, I went back to the dealer. They did thorough inspection, found nothing. Offered trade.