2021 Nissan Altima Brakes Problems

The system malfunctioning is the front sensor braking. My safety and others were put at risk with this because multiple times my car has braked me and or completely stopped me because it’s malfunctioning , it happens while I am on a busy street and someone even almost rear ended me because my car braked out of nowhere. It’s called “Phantom Braking”. No, the problem has not been confirmed by dealer became they stopped answering. I took it to the manufacture but they want to charge me too much. Yes and it first appeared Feb 2nd , a day after I bought the car. So at first it will aggressively brake me and I can tell when it’s going to start braking me because this loud scratching/grinding noise appear .. the noise sounds like it’s coming from the bottom and I can feel it vibrating my car when I relax my feet on the brakes or the floor. But as soon as that noise comes on then the car starts braking me and sometimes it will cause the engine to stall and then the car will stop driving completely while im on the middle of traffic.

The contact rented a 2021 Nissan Altima. The contact stated while driving 45 MPH, the brake pedal was depressed, and the vehicle failed to respond. There were no warning lights illuminated. The contact stated that it felt like the brakes were inoperable. The vehicle was then taken back to the rental car agency. The vehicle was not diagnosed, and the contact was unsure if the vehicle was repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 44,794. The VIN was not available.

The contact owns a 2021 Nissan Altima. The contact stated while driving 45 MPH, the brakes independently activated, and the rear of the vehicle fishtailed. The contact stated an unknown warning light showing an image of the rear of the vehicle was briefly illuminated. In addition, the contact stated that the driver's side front seat frame was fractured, and the seat was loose. The vehicle was taken to the dealer; however, the brake failure was not duplicated. The contact was informed that the driver's side front seat rack was fractured and needed to be replaced. The vehicle was not repaired. The contact stated that the vehicle had been taken to several dealers; however, the brake failure was not duplicated. The contact was afraid to continue driving the vehicle. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure and a case was filed. The contact was informed that the repair for the driver's side front seat rack was not covered under warranty or any special programs. The failure mileage was approximately 41,000.

Every time I drive under an over pass my vehicle will come to a stop. Placing me in DANGER with traffic.

I Serviced my vehicle with a Nissan Dealership, and was told brake pads were good. Within a couple of weeks there was a scratching sound like the brake warning indicator. I brought my car to a mechanic to be repaired but brake pads were confirmed to be fine. Further investigation indicates a bad brake caliper in the rear. Mechanic contacted Nissan to order a rear caliper and was told it’s a known issue with the rear calipers. With the caliper not functioning properly this is a direct safety violation and can cause my brakes to seize or not function hindering my/others ability to stop. I will have the repairs done with my mechanic and I have submitted a case file with Nissan. If Nissan is aware of the brake calipers having issues then this should be on the recall list and immediately fixed.

When traveling in a rental from SFO to Concord CA, on the Bay Bridge at 9 am on the 26 of September 2023, just as I entered the underpass section near Treasure Island, the front sensor malfunctioned and auto braked from 47 mph to 28, generated audible, tactile, and visual alarms, even though the car in front was not decelerating (auto lights, tail lights in from of me as the car went into a dark section of road may have been misinterpreted). I was almost crashed into. Scariest experience in 37 years of driving. No over ride.

1. The automatic emergency braking activated while approaching a railway crossing. And yes, it is available for inspection. 2. If anyone had been behind me, it very likely would have resulted in a collision. 3. Not yet confirmed by the dealer, but has happened to me three times. 4. No. 5. No warning before the malfunction.

On two separate occasions, during intermittent weather changes, my vehicle has giving me notice of forward warning collision being disabled or has flashed on my dashboard. Same goes with my rear collision warnings. My car has also force-brake while driving under 30 mph. I don't know if there is a safety issue with the alignment of the radars in the newer models but its caused a fear of driving my family in that car.

I was driving on the interstate in a construction zone and begin reducing speed from about 62 mph after noticing brake lights from cars in the far distance. As the car start to reduce speed, I begin to apply the brakes as I'm approaching the stopped traffic and instead of stopping my car kept going. I pressed the brakes harder, and the car began to slide. After sliding about 9-10 car lengths, I was stopped by rear ending the vehicle in front of me. There was an error message on the dash "Chassis Control System Error See Owner's Manual" that appeared on the dash. I was struck in the back by a Toyota 4Runner resulting in my car being totaled.

Driving down the street a truck in front of the lady in front of me. It was a green light he decided to stop. She stopped I put I started to stop my brakes would not stop the car nor did the emergency front collision brakes work I could not stop the car.

While driving, most times at higher speeds, the light with the car and lines behind it (VDC light?) will turn on, and then a minute later the front and back AEB lights turn on and the dashboard says “malfunction: see owner’s manual.” This happens multiple times per week, sometimes multiple times a day. There have been other recalls for this issue with other Nissan Altima years with this system.

I bought the car in nov. 2021. I was at a store parked I put the car in reverse ,the car started to move, it made a lot of noise and it stoped. there was nothing behind me. This has happen about four times backing out of my driveway a lot of noise and the car stops. I took it to the dealer once and they told me that they could not find any problems.

The forward emergency braking system periodically will engage with no reason. I did not record the first date this happened. It was in July 2021. This first happened not long after I purchased the car last year on the interstate in heavy traffic with low speed and nothing close enough to set it off. Sometimes just the emergency light will just appear and disappear quickly and sometimes it comes on and the brakes go on. The dealer service and the regional technician has inspected it a few times and could find no error but it only happens sporadically. I checked recently and there is a class action suit against Nissan for the same problem in Tennessee. There seems to be the same problem with other models from 2019 to present.