2020 Tesla Model S: brakes engage by themselves (phantom braking)

Filed Mar 13, 2024 · Driver assistance · 100 miles · CA

The contact owns a 2020 Tesla Model S. The contact stated that while driving at various speeds between 40-50 MPH, the vehicle experienced phantom braking, causing the vehicle to abruptly stop in the middle of the road. The contact indicated that the failure had occurred on multiple occasions at the same road location. Also, the contact indicated that the vehicle had erroneously attempted to switch lanes and at one time attempted to switch lanes into oncoming traffic. The cause of the failure was not yet determined. The manufacturer and local dealer were notified of the failure. The failure mileage was 100.

Filed Aug 29, 2023 · Acceleration, Brakes · NM

From Aug 23 to 28, 2023, we traveled in our 2020 Tesla Model S Long Range Plus vehicle from Santa Fe, NM to San Diego, CA and back, for a total distance of approximate 2100 miles. We drove primarily interstates (I-25, I-10, I-8, I-5) where speed limits ranged from 55 to 75. We experienced numerous instances of what is known to Tesla owners as sudden, severe "phantom braking" [hereinafter PB] while the cruise control was activated (not AutoPilot, nor FSD, just cruise control). In ALL instances, no cars or other objects were visible within 1 mile ahead of our vehicle, and in ALL instances, these "phantom braking" incidents happened on absolutely flat, straight, smooth road surfaces, at all times of day, morning, noon, and night. This car has had PB problems since the day was purchased; in fact on that day, there were at least two sudden PB incidents while I drove home in the new car! At numerous times since, I've reported these problems to Tesla Service---to no avail. The problem is widely known among Tesla owners, and to my knowledge no owner has been able to get Tesla to do anything. On this most recent long-distance trip, our PB incidents happened typically at the posted speed limit of 75mph in all-clear situations---nobody else anywhere remotely nearby. The car would be operating smoothly when all of a sudden the brakes would engage and the vehicle would rapidly decelerate, throwing forward anything not fastened down inside the car. Because of the history of this problem, I NEVER activate cruise control whenever ANY vehicle is near the rear of the car, as I can never tell if my car will "phantom brake" at that moment, causing a possible accident. I consider this problem VERY dangerous. I have owned this car since 2020, and Tesla has refused to do anything to fix it, always coming up with one or other stalling technique or excuse. I consider this an extreme safety flaw of this car and hope the federal safety agency can help to force Tesla to fix it once and for all.

Filed Feb 10, 2023 · Driver assistance · NM

While driving today on I-25 northbound at approximately 9:50 am from Albuquerque to Santa Fe we had the cruise control set at 85 mph. There were no vehicles or obstacles in front of our 2020 Model S when the automatic braking suddenly engaged bringing the vehicle to a sudden stop. Multiple vehicles behind us had to make emergency maneuvers to avoid hitting our stopped vehicle. The vehicle was set on cruise control, NOT full self driving. This type of life threatening malfunction is not acceptable in a $100,000 vehicle. The car was serviced 1 week prior to this incident at the Tesla service center in Pojaque NM. There were no warning lights, messages, or other notifications prior to the phantom braking incident. We plan to sell the vehicle as we no longer feel safe driving it.

Filed Feb 18, 2022 · Driver assistance · 100 miles · CA

The contact owns a 2020 Tesla Model S. The contact stated that while driving at an undisclosed speed, the vehicle experienced phantom braking. The vehicle was not diagnosed nor repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 100.

Filed Feb 17, 2022 · Driver assistance · FL

The Tesla when driving at 35 mph on AIA at or near the speed limit frequently has quick sudden phantom braking and acceleration. I have analyzed and believe I know the reason. There are many driveways. When cars enter or exit, these phantom braking events occur. Most often when another vehicle ( in front of the Tesla )enters a driveway and is moving away from its lane, even if its tail light is in the bike lane (which is a painted narrow lane on the right side of the road) the Tesla will suddenly brake (flashes simultaneously a red dashboard image for following too close and then accelerate). At the instant of the following too close warning the lane in front is totally clear. It happens so fast that if cars behind are not being attentive they close too close to my vehicle and then set off a warning on my dash. Similarly if on a multilane road and an accelerating car cuts in front of me too close, the cruise control sees the object without considering its acceleration, and suddenly brakes and then as the car in front accelerates to create more distance , the Tesla accelerates suddenly as well. Further, the tesla system invokes more rapid changes in speed - both deceleration and acceleration - than a good human driver would invoke as humans register the acceleration of the vehicle in front of them. In fact humans would curse the other car more often than brake. One other comment: Tesla has an outstanding feedback system between vehicle and headquarters and their system has been behaving better than a 2020 S Class Mercedes comparable one that I have also been driving. Tesla feedback from customers is not even available. I know this is a business aspect - but I believe they would improve their system if they had a way get the feedback I just gave you. But they do not.

Filed Feb 17, 2022 · Driver assistance · FL

the car when the autopilot is on sometimes will Phantom Brake out of nowhere at high speeds in the highway. almost creating a coalition with the cars in the back.