Automatic Emergency Braking problems of the 2018 Nissan Leaf

On [xxx], I was slowly pulling into my driveway, took my foot off the accelerator and turned the steering wheel slightly to the right as the driveway is l shaped. Suddenly, the car sped up towards the garage door. I looked down quickly to see if I’d somehow pressed the accelerator by accident but I had not. I slammed on the brakes as hard as I could but the car kept going and smashed into the garage door and the corner of the garage, causing close to $20k in property damage. The hood and front bumper were badly caved in at the point of impact and pieces of the undercarriage were on the ground. The air smelled like rubber and there were tire marks on the driveway here I had slammed on the brakes. The airbags did not deploy. The automatic braking system did not work. There were no warning messages or lamps. The only unusual symptom that I noticed was that on my way home from kona, when I was pulling up slowly to a traffic light, the car seemed to hesitate a couple of times, which seemed odd but not severe enough for me to be concerned about a wreck. That occurred about a half hour before the incident. I was not physically injured but I have been very shook up and depressed since the incident. If this had happened on the highway, I could have been killed and the car could have killed others on the road. I reported the collision to usaa immediately and, on their advice, I had it towed to kona Nissan, the dealership where I purchased the vehicle and where I have had it serviced. The expectation was that they would perform diagnostics on the vehicle but they won’t touch it, nor will they talk to usaa. I had taken the car in when it was recalled for the vcm issues and I don’t believe it was fixed properly. Or the repair wasn’t effective. The car is at gerber body shop in kona, hawaii. Please arrange inspection with them. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

The incident occurred at a stop sign where I was waiting behind one other vehicle. The vehicle ahead of me accelerated from the stop sign to turn into traffic, but abruptly slammed on their brakes. I had began accelerating up to the stop sign and was unable to stop before impacting the car in front of me. As soon as I saw the vehicle was braking, I immediately slammed on the brake pedal. Braking did not immediately occur. My wife said she was afraid that I had slammed the gas pedal because she could hear my foot hit the brake pedal and neither of us felt any braking. The Nissan Leaf was in eco mode and epedal at the time of the incident. I believe that the transition from regenerative braking to mechanical braking delayed the stopping of my vehicle. We were lucky that this happened in a very low consequence situation, but if this happened with a pedestrian or at a higher speed where emergency braking is required, this delay in braking could be dire. In addition, this vehicle is equipped with automatic emergency braking. I have heard this feature go off before in this specific car when a car is braking faster than I am. In this case, the alarm and assisted braking did not go off, despite a car stopping within extremely close proximity.

Twice now - both times on the south bound richmond bridge, the automatic emergency braking lights came on and slammed on my brakes for me, as if I was about to crash when I was going 65 mils per hour, no one in front or behind me and no traffic, accident or reason. I almost lost control of the vehicle and would have caused an accident had anyone been closer to me.

The malfunction warning light came on to indicate that the automatic braking system was not working. I brought the car to the dealership, which quoted me $1900 for a new sensor. I have read about accidents and near collisions due to the malfunctioning of this system and am now worried that there might be sudden braking that others have experienced. I would like to get this system fixed, but do not believe consumes should need to pay $2000 to repair a defective system.

Around 45 degree weather, while driving on the freeway, a warning light indicating the aeb had been turned off started flashing on my dashboard without any collision, jerky movements, sudden stops, or changes to settings. At the same time this happened, my electric battery mileage started to fluctuate erratically (73% to 8% to 14% back to 70% and finally to 60%). This is extremely concerning because of the car immediately brakes or if the battery dies on the freeway, it could cause a major collision.

Aeb system malfunction around 25000 miles. Dealer diagnose as the front radar failed and cause the cruise control not available.

2 incidents have occurred with this vehicle. The first earlier this year (2021) is that upon slowly accelerating to move closer to vehicle that moved up in a turn lane, the automatic emergency brake system engaged, abruptly stopped the vehicle and many lights lit up across the dashboard. The brakes then released and all lights on the dashboard disappeared. I was not close enough to the car ahead or at any rate of speed that should have caused this abrupt brake reaction. The 2nd incident and most dangerous happened on 8/13/21. I was slowly reversing out of a parking spot at a crowded location, when I saw a car behind my vehicle. I went to brake (not hard brake just regular), and the brakes did not work. I continued to slowly roll back towards the car behind me. I tried pressing the brakes repeatedly and it would not stop rolling backwards. I then pulled the emergency brake and the car came to a stop. No lights appeared on the dashboard. I turned the car off and powered it on again and slowly moved forward into the parking space and tried reversing again. The car was driving completely fine just after. I had a short trip home & didn't drive the rest of the evening. I didn't charge the car as there was still 85% left on the battery. The next morning, the car would not start and a message showing "service ev system no power" appeared on the dashboard with multiple lights lit. I called a tow truck to take it to the dealer and they found that the 12v battery was completely dead. Battery light not lit on dashboard prior to the complete outage. The dealer said it was the 12v battery that was likely the cause of these incidents and they replaced it. The brake issues could not be reproduced at the dealer after the new battery installed. Also note, that I just had the vehicle in for a multi-point inspection in June where nothing was found to be faulty. They did recommend a brake fluid exchange, so this was done as well as tire rotation.

I was driving alone at 4:20pm at about 30 mph, with no other cars or pedestrians around when the brakes suddenly activated, and the accelerator went to idle. The braking lasted about one second and did not stop the car completely. This occurred on a city street. These events have been happening several times a month.