2020 Tesla Model S Driver assistance Problems

On 09/18 , I was using the Smart Summon feature of my Tesla Model S in the parking lot of Costco, Greenwood (Indianapolis, IN). The intent was to have the vehicle autonomously navigate from its parked spot toward my location, as designed and advertised by Tesla. During the Summon operation: 1.The vehicle failed to correctly detect and avoid a fixed obstacle (the cart return stand where shopping carts are housed). 2.Instead of stopping or rerouting safely, the car collided with the structure, causing visible damage to the front of the vehicle. 3.While there was no damage to public property or injury to people, the incident demonstrated a serious safety risk, since pedestrians or nearby vehicles could have been struck had they been present. 4.The Smart Summon system did not provide sufficient warning or correction during this event, despite being marketed as capable of safely maneuvering in such environments. This failure shows that the Smart Summon feature did not perform as intended and behaved in an unsafe manner in a real-world public parking environment.

NHTSA ID

11689122

Incident

Sep 18, 2025

Vehicle was tested for concern about self driving after test drive with tech told ok 3 days later Summoned car and immediately turned into adjacent vehicle all captured on video in 1-2 seconds. No issues with summons for over 4 years $2200 damage to adjacent vehicle but Tesla no damage left front wheel caused damage on start.

NHTSA ID

11641683

Incident

Feb 10, 2025

Since the installation of software version 2024.27.25, which includes FSD version 12.5.4, on Sept 26, 2024, any driving which occurs on FSD results in emergency braking events for Green Lights, unprotected/unsignaled crosswalks without pedestrians present, Parallel Parked Cars not encroaching on the lane of travel, vehicles traveling the same direction and similar speed (+/- 5mph), not encroaching on my lane. These frequently reoccurring events were not remedied by any of the subsequent updates received: v2024.32.10 (FSD v12.5.4.1) on Oct 8, 2024 v2024.33.5 (FSD v12.5.4.2) on Nov 2, 2024 2024.44.25.2 (FSD v12.5.4.2) on Dec 10, 2024 While not all events occurred with surrounding traffic, those that did posed a hazard to not just occupants of my vehicle, but those in and around other vehicles, including pedestrians. Most other drivers do not expect and are unprepared for a vehicle to apply panic-level emergency braking and come to full stop at green lights, before unprotected crosswalks with no pedestrians present, or along well-traveled streets without significant errant other drivers. No warning lights, chimes, or other indications ever appeared on any of the displays or instrument clusters within the vehicle during any of the events. The FSD traffic display did not indicate or highlight any features of the surrounding area that were causing it to slow or stop. The problem has been regularly experienced by many other drivers, as evidenced by the large number of similar reports across the various Tesla driver communities online. I and my vehicle are available for inspection and I'm additionally willing to take an inspector on a ride-along to demonstrate the issue.

NHTSA ID

11631709

Incident

Sep 27, 2024

In all assisted driving modes except Full Self Driving (FSD), the car properly displays the speed Limit it has determined either by Map data or visual confirmation. In FSD, apparently only on pre-2021+ Model S cars, the determined speed limit is not displayed. In my town we have a US60 route. The car sees these signs and determines the speed limit is 60, even though it is only 35. The driver notices a rapid acceleration and may observe the set FSD speed has changed to 60. There is no Speed Limit displayed in this mode. Very dangerous to go this fast on a 35 MPH road. When not using FSD, the car does show this error in the speed limit as being 60, even though the car determined speed limit itself is in error.

NHTSA ID

11618590

Incident

Oct 7, 2024

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.

NHTSA ID

11577081

Incident

Jun 1, 2020

Mileage

100 mi

Setting: Adaptive cruise control, 70 MPH, no nearby traffic, no nearby bridges or overpasses, no visible obstructions, straight highway, daytime, clear skies. Incidents (multiple): Unexpected, inexplicable braking. During one of the incidents, there was a splotch of some sort on the road (perhaps spilled paint). During all other incidents, there was nothing obvious which could explain a misperceived need to brake.

NHTSA ID

11565360

Incident

Jan 3, 2024

Error message popped on my screen steering might require extra force and shortly after that I lost power steering, cruise control, automatic emergency, braking, forward collision warning land departure etc. Contacted Tesla service to acquire about recalls since I remember reading about it.

NHTSA ID

11545828

Incident

Sep 18, 2023

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 NHTSA can help to force Tesla to fix it once and for all.

NHTSA ID

11541451

Incident

Aug 28, 2023

Driving on freeway speed 80mph with no other cars around the car slammed on brakes while on cruise control. It was able to accelerate and the next time I put the cruise control on a few minutes later it slammed on brakes again. Car clean no warning that it was trying to avoid an unseen object. Drove rest of the way without cruise control on and no problems.

NHTSA ID

11538180

Incident

Aug 12, 2023

CAR REPEATEDLY APPLIED THE BRAKES HARD AND SUDDENLY WHILE TRAVELING AT 75MPH ON THE INTERSTATE. THIS OCCURRED WHILE IN DRIVER ASSIST MODE AS WELL AS IN CRUISE CONTROL ONLY. IT DID NOT HAPPEN WHEN DRIVING WITHOUT ANY ASSISTED DRIVING MODES ACTIVATED. THERE WERE NO OTHER VEHICLES NEAR US NOR ANY OBJECTS IN THE ROAD OR ON THE SIDE OF THE HIGHWAY THAT COULD HAVE BEEN CONSTRUED AS A REASON TO EMERGENCY BRAKE

NHTSA ID

11518270

Incident

Apr 18, 2023

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.

NHTSA ID

11506719

Incident

Feb 10, 2023

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.

NHTSA ID

11497945

Incident

Nov 14, 2022

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.

NHTSA ID

11493516

Incident

Nov 5, 2022

Mileage

30,000 mi

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.

NHTSA ID

11490149

Incident

Oct 9, 2022

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

NHTSA ID

11489469

Incident

Oct 16, 2022

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.

NHTSA ID

11480669

Incident

Aug 12, 2022

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.

NHTSA ID

11475223

Incident

Jul 21, 2022

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.

NHTSA ID

11474994

Incident

Jul 1, 2022

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.

NHTSA ID

11456233

Incident

Mar 10, 2022

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.

NHTSA ID

11453848

Incident

Feb 20, 2022

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.

NHTSA ID

11452760

Incident

Oct 1, 2020

Mileage

100 mi

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.

NHTSA ID

11452533

Incident

Feb 17, 2022

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.

NHTSA ID

11452482

Incident

Feb 17, 2022

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.

NHTSA ID

11450764

Incident

Feb 6, 2022

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?

NHTSA ID

11437487

Incident

Sep 4, 2021