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.
2020 Tesla Model S driver assistance complaints
Page 2 of 2: complaints 11 to 25 of 25, newest first, as owners wrote them.
While driving my daughter to school at approximately 8 AM I turned onto the merge lane of southbound Interstate Highway 280 at the junction with Wolfe Road, Sunnyvale. At that time of the morning the sun was low in the sky. After I turned into the merge lane and started accelerating to merge onto the highway the car was pointed directly towards the sun. While accelerating and at about 60 MPH the car braked hard without warning and a message that corrective action had been taken was displayed together with an audible warning. There was no vehicle in front of my car for some hundreds of feet. The vehicle following my car was able to slow in time to avoid a collision but came very close to the rear of my vehicle. While there was no collision, the driver of that vehicle sounded his horn for an extended period of time and gestured at me. Sudden braking at highway speeds on a clear stretch of road clearly puts vehicles behind the rapidly slowing vehicle at risk of a collision. My vehicle has has not been inspected by Tesla or anyone else since this occurred. There were no indications of any problem before or since this incident. The vehicle is available for inspection if requested.
The contact owns a 2020 Tesla Model S. The contact stated while driving 75 MPH with the Adaptive Cruise Control activated, the vehicle inadvertently decelerated to 52 MPH. During the failure a second vehicle nearly crashed into the rear of the vehicle. The contact indicated that no warning lights were displayed. The failure occurred on several occasions. The cause of the failure was not yet determined. The manufacturer and local dealer were not notified of the failure. The failure mileage was 30,000.
I was on the interstate with my cruise control set at 75 mph. Traffic was normal when all of a sudden the brakes were applied and my speed quickly decelerated by at least 20 mph. I immediately physically applied the brakes to disengage the cruise control and immediately speed up again so that I would not get rear ended by the car behind me. This event happened 5 more times through my road trip while I was using the autopilot AND cruise control.
While using adaptive cruise control on the highway. During the day. I experienced multiple instances of unnecessary braking. Once when another car was close behind me. I think the car was overreacting to passing cars or shadows or dips in the road. It did not seem to happen while driving at night. At times it happened about every fifteen minutes. At other times it would be about once an hour. Sometimes the car would recover and accelerate again quickly and at other times I had to step on the accelerator pedal
The tesla full self driving was on and it turned my car into the guardrail in the middle of the highway all by itself for no reason at 70mph. It looked like a truck was turning into my lane and instead of stopping the car swerved into the grass and I hit the guard rail. The car was totaled. I have a video of the incident. This is one of the videos: https://www.veed.io/view/8e44fe01-a7ab-457c-90ee-4f7089bfe33c Full self driving was on the whole time. When I tried to take over it was too late to stop it and the brakes did not work or stop. The airbag did not go off. There had to be an error with the full self driving that decided I should go into the guardrail.
While driving at night if someone doesnt turn off there high beams the car will randomly slam on the breaks as if its going to hit something. Low beans dont effect it but high beams do while your driving past another car.
While driving with adaptive cruise control or auto pilot the car will apply the breaks for flashing yellow lights. Random times there is nothing around and it will just tap the breaks lunging you forward then contrinues as normal.
The vehicle still exhibits random forward collision alerts. I can be multiple car lengths away from the car in front traveling at no more than 40 mph, and it will still trigger. Tesla is using these to determine a safety score, which it then uses to determine monthly auto insurance rates. There is no way to request review of a potentially false forward collision alert. Worse, on the freeway, the autopilot still randomly emergency brakes. This is a well known reported issue for all Tesla vehicles. Over-the-air updates have not fixed this issue. Lastly, the passenger side mirror keeps getting stuck in rear view mode (faces down) when shifted to drive gear. I've brought this up with the service center, and they claim nothing to fix. This has been ongoing since I purchased the vehicle. I have had near misses when attempting to shift to the right and cannot see vehicles on the right lane.
While driving with Autopilot engaged the car applied the brakes suddenly and severely without warning. This has occurred on multiple occasions at freeway speeds and at surface street speeds. There was no apparant reason to apply the brakes and no warning.
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.
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.
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.
The latest tesla update has caused significant increased number of "phantom breaking" episodes when using just cruise control on state highways. I had at least 10 episodes on my last 100 mile drive (not using autopilot, just cruise control). Worst events caused rapid breaking from highway speed of 65 mph down to 40-45 mph with warning messages and audible alarms. Non of the events needed breaking. The worst two events were on straight sections of road with no oncoming traffic or other potential obstruction. I do not feel safe using cruise control on the freeway.
When backing up, multiple systems failed at the same time including backup camera, backup sensor distance visuals, backup sensor audio alerts, writing data to flash drive, GPS sensors. Tesla was unable to diagnose the sysfiles to identify the hardware issue behind the simultaneous failures because they are deleted after seven days. Scheduling a service appointment takes much longer than seven days. No one at Tesla can tell me why this happened. No one can assure me that it will not happen again. I hope this is not a widespread issue. I was not injured and my rear bumper only sustained minor damage. But what if someone had been hit because all these systems failed simultaneously?
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