2021 Tesla Model S Driver assistance Problems

I noticed it happened before but I couldn't quite figure out what happened! I was driving down the local road and got ready to go under a overpass and next thing u know my EV just slammed on brakes like I was about to hit someone! Seatbelt choked me and made me gag! But when I came through this time It caught me off but after that I realized there's a problem,especially going under that overpass! This couldn't been very dangerous to anyone! This is a VERY DANGEROUS and IMPORTANT SAFETY CONCERN! I STRIVE SAFETY AND THIS COULD BE FATAL!! I NEED TO REACH SONEONE IN SAFETY! ASAP

NHTSA ID

11737492

Incident

May 13, 2026

I was in full self driving mode and was travelling North bound 110 freeway transitioning to 405 freeway Northbound. In the right lane. Transition curved left. looked at my speed for a split second and as i looked up we were a split second from hitting freeway barrier head-on. We crashed through the barrier and ended on the embankment of the freeway. My car front end was totally demolished, front airbags went off. I was ok, but my wife suffered a L1 vertebrae fracture and was taken to Harbor UCLA Hospital for treatment. She was released 9 hours later with a back brace and pain meds. The accident occured at 8:34 am Sunday April 5th, Easter sunday while on our way to church. Its been over a month and my wife is still in a back brace, but healing slowly. USB Drive taken out of the glove box showed that all cameras cut off about 10 seconds before the crash. Not sure if the whole system turned off.

NHTSA ID

11737104

Incident

Apr 5, 2026

On October 17, 2025, while using Full Self-Driving (FSD) mode on my 2021 Tesla Model S Plaid, the car failed to stop at two red lights within a three-hour period. In each case, the car attempted to drive through the intersection even though the signal was solid red. I intervened manually and applied the brakes to prevent a potential collision. There were no prior warnings or alerts, and I have not modified the vehicle. This behavior endangers my safety and the safety of others. I am willing to provide the vehicle and any available data logs for inspection if requested.

NHTSA ID

11694506

Incident

Oct 17, 2025

GETTING WARNING ONDASH THAT SAYS "Adaptive ride control unavailable. Vehicle speed limited - Proceed with caution". On the internet many reports are noted of the same problem w Tesla vehicles, especially Model S cars. These have occurred soon after to taking delivery of after 20-30 K miles. Mine occurred at about 31,000 miles in my Model S 2021. Tesla says the need "diagnostics done first " at $275 and then the fix for another $300. This does not seem right.

NHTSA ID

11670103

Incident

May 31, 2025

I engaged Tesla's Autopark to park my car in my usual spot. The car kept going after reaching the back of the parking space, crashing into a pole located around one foot behind the parking spot. The time between when it should have braked and the post was of such short duration that I had no time to apply the brakes and prevent the accident. The car lacks both radar and lidar, either of which would have detected the post. Instead it relies on a single video camera. What made this parking different from previous safe parking attempt in the same space was that the car was perfectly lined up. That meant that the camera could not make use of parallax to enable the AI to notice that the post was moving against the background and must, therefore by close behind instead of 40 feet away. For Tesla Autopark to function safely, it needs to "know" how far back possible obstructions are. It could do so by never backing up with perfect alignment. Instead, the car should move enough from side to side to generate enough parallax effect for it to be able to determine if it is about the crash. The service manager who called to tell me that Tesla decided the accident was my fault absolutely refused to even hear my opinion on what Tesla could do to prevent such accidents in the future. He told me he had be instructed to deliver Tesla's disclaimer and to not listen to anything I might have to say. As an engineer who has patents in the area of both aviation and automotive safety, I have an opinion that might have been worthy of Tesla's hearing. I now suggest you folks warn people that Autopark should not be used to complete the parking procedure unless and until Tesla decides to address this problem. In the meantime, drivers should be cautioned to either not use the feature or to tap the brakes lightly to disengage the feature several feet before reaching the back of a parking space. The driver can then complete the maneuver manually.

NHTSA ID

11625790

Incident

Oct 29, 2024

Driving Southeast on [XXX] between Gallup, NM and Albuquerque, NM. I was traveling at 75 MPH on an open road, it was a sunny day. I had the adaptive cruise control engaged (ACC). Literally no traffic in front of me for as far as the eye can see. Nothing that would cause an alert or obstruction in front of the car. The Tesla was on ACC and suddenly braked, hard. I immediately disengaged the ACC and drove manually. It was a frightening incident. If there had been traffic behind me, it would have resulted in a crash, as I would have been rear ended. If the traffic had been a truck behind us, we would probably have sustained extreme injuries. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11579072

Incident

Feb 29, 2024

I have never received an audible alert for my blind spot warning. There is no light on the outside mirrors or anywhere else inside the vehicle to catch your attention. If I am looking at my display in front of my steering wheel I will see a car that is in my blindspot change from GRAY to RED when I activate my blinker; however, the car has never beeped or alerted me beyond passively changing the car color to red on my display screen. If I'm changing lanes I am not looking at my screen which is directly in front of me, I'm looking at the road and I'm looking left or right. I have almost hit many other vehicles multiple times because my car will not audibly notify me that theres a car in my blind spot or a car that is speeding up behind me which I might have missed. This is a feature which I paid for and I feel is defective in it's current state. The car is available upon request for inspection. The lack of an audible BSW alert puts myself and others on the road at an increased risk of collision. I have mentioned it to the dealer but after over two years no update has been made. I have not made a big attempt to correct this issue with the dealer since it's difficult to speak to someone at Tesla. No, the issue has not been inspected by anyone. I discussed it with a rep shortly after I purchased the vehicle but it seems like an issue that Tesla knows about if they only programed the vehicle color to change and didn't program an audible alert. No, there have not been any alerts before this issue as it appears to be a simple programing issue.

NHTSA ID

11572308

Incident

Jan 1, 2022

Driving on divided highway at night, the car slowed dramatically at each exit from the highway.

NHTSA ID

11562107

Incident

Dec 21, 2023

Vehicle braked without warning with cruise control engaged. Luckily there were no other vehicles near us when this phantom braking occurred.

NHTSA ID

11540692

Incident

Aug 15, 2023

The adaptive cruise control has had phantom braking issues from day 1 of ownership (and through every software release from Tesla as I always update when a new one is available). Most of the time it's not possible to identify exactly what triggers the event. However, on July 27th 2023 I drove from Phoenix to Sacramento via I10, I210, I5 and had 6 phantom braking events. 5 were directly correlated with passing a semi with me in the #1 lane and the semi in #2. I had the car in adaptive cruise control mode, but I maintained steering control. The car approached the semis normally, but as soon as the car was completely alongside the truck it began braking aggressively. More than just allowing regenerative braking to slow the car, the brakes were applied. This did not happen with every passed truck, maybe 1 in 10. One of the 6 phantom events could not be correlated with any clearly identifiable cause. There is no warning when the car begins decelerating so it is a surprise to the driver. Further it is an extreme hazard to following vehicles who WILL be forced to react. I have not directly reported my specific events to Tesla. For one thing they have no reasonable way to do this (online access, phone access. The number they give to report problems hits an automated phone tree where there is no option for reporting issues). Clearly Tesla is well aware of their phantom braking issues. I'm reporting this to you now in order to apply more pressure to Tesla to finally resolve this. In general, considering some of the other phantom braking episode beyond this one specific trip, I have occasionally noticed the car displays a yellow signal light on the driver's display but only while phantom braking has already begun. I believe this is case where the car believed it saw a caution sign or signal light in it's cameras and was reacting to that. There were no signal lights, but the sun was either coming in that direction or reflected off of other vehicles or buildings.

NHTSA ID

11535327

Incident

Jul 27, 2023

Adaptive Cruise Control. The vehicle in this mode suddenly brakes for no apparent reason which under the right circumstances could cause a collision. Tesla Service Center looked at it but could not reproduce. This has happened many times on various dates not just once. Sometimes it happens more than once on a trip, sometimes it does not happen. This happens with no warning. Tesla knows about this problem for years but has failed to correct.

NHTSA ID

11534764

Incident

Jul 27, 2023

Going north on New York State highway I-87, there is a bridge which results in Tesla Autopilot erroring EVERY TIME AND EVERY DAY and results in a "Full Self Driving Error" which causes Telsa car to brake along with putting on hazard lights. Issue was reported to Tesla, but they responded that it happens to everyone under this bridge so there is nothing they can do right now. The fault occurs on a busy highway at 55mph zone, and happens 100% of time going under the bridge, every single day. The bridge is wide enough that shadow results in error and car loses all understanding of what lane it is in. Today at the Tesla service center, the employees all reported the same issue as well and that there is no idea if it will be fixed. Happens only when using FSD/AP driving support; manual driving is unaffected.

NHTSA ID

11533020

Incident

Jul 17, 2023

There was a trash can on the edge of the road and my vehicle was in autopilot/FSD mode and for some reason it swerved over too close to the edge of the road. I intervened in time to avoid hitting the trash can head-on but it still struck the passenger side mirror and scraped across the passenger rear fender. The mirror got slammed into the passenger side door causing damage to the door and trim at the bottom of the passenger side window.

NHTSA ID

11532951

Incident

Jul 13, 2023

On 10Jul2023, approximately 1:00pm, while traveling southbound on Hwy 69, south of Toll Road 49 in Lindale, Texas, while driving in the right lane and speed set at 75mph, when all of a sudden the car activates the right blinker and - without slowing - pulls into a fairly short, dedicated right turn lane that turns into a business. At the end of the turn lane is a drainage culvert. The route of travel did NOT include a turn and the car should have been continuing straight down the highway. The car enters the turn lane and never slows from 75mph. I immediately hit the turn signal button to use the camera to get a look to my left to see if a car is there and also look over my left shoulder when there was no response (no camera) to activating the left turn signal. This all occurs as my hand is grabbing the yoke and my foot moving to the brake. I see the blue "path indicating line" wavering left and right and then lock into a right turn into the business parking lot at the end of this dedicated turn lane. Again, there is a culvert at the end of the turn lane also. As soon as I see over my shoulder that the lane to my left is clear the car attempts to make a 90 degree right turn at 75mph. At that exact moment I am able to yank the yoke left and tap the brake to disengage the Full Self Driving Beta as the car is starting the right hand turn. The rear end of the car breaks loose and slides as I get the yoke steered into the right hand lane of the highway. I allow the speed to bleed off to get the rear tires behind me and continue on. My dog has been thrown around the back of the car, my wife banged her head on the passenger side window. This whole event occurred in mere seconds.

NHTSA ID

11531626

Incident

Jul 10, 2023

Third time this week I have been thrown forward into the steering wheel with no cars or objects surrounding me.

NHTSA ID

11526251

Incident

Jun 9, 2023

Another automatic phantom braking throwing us toward in the car with no objects or other cars in proximity.

NHTSA ID

11521948

Incident

May 14, 2023

Oncoming vehicle suddenly turned in front of 2021 Tesla Model S resulting in collision at 34mph. Automatic braking did not engage, collision warning system failed to sound alert. Air bags deployed however seat belt completely spooled out causing the driver to strike the windshield and break the glass by contact with the top of the head. The vehicle was a total loss and the dealer never inspected the car.

NHTSA ID

11520934

Incident

Feb 7, 2023

When using adaptive cruise control vehicle randomly applies brakes while driving at highway speeds, for no reason. Sometimes braking is severe, sometimes moderate, sometimes light. In the instances of severe or moderate braking, a real danger exists that following vehicle will be unable to stop and will collide. This happens relatively frequently, particularly on some highways. Sometimes multiple incidents occur on one drive.

NHTSA ID

11520260

Incident

Apr 30, 2023

On March 19, 2023, I put my Tesla in drive and it went into reverse . When I tried to brake the speed accelerated. We were unable to stop the vehicle, while driving in reverse the car hit two mailboxes and two ceramic flower pots. It has been over 6 weeks and Tesla will not return my calls or messages. My insurance company looked at the body of the vehicle for a repair estimate. Nothing indicated that there was a problem prior to the incident.

NHTSA ID

11519299

Incident

Mar 19, 2023

Vehicle is typically operated in FSD Beta mode. I have had approximately a thousand driver initiated disengagements due to unsafe or potentially unsafe operation in Beta mode. At times there have been indirect indications of unintended vehicle operation potentially due to anomalies with system hardware and communications between modules and control systems. The refreshed S and Y models feature a vehicle display behind the yoke steering wheel. When at stop signs, stop lights, or when turning, the yoke (in an upright or near upright position) blocks safety related displays indicating intended vehicle path, bollards and critical safety-related driver annotations. Visibility of these safety critical displays is further degraded when stopped making unprotected turns with the yoke erratically moving. The ability of the driver to safely takeover control of the vehicle is further degraded by the chaos associated with the yoke whipping back and forth on unprotected turns, and drivers and passengers being unable to see critical displays. When the vehicle, driver and passengers all have a reduced capability to ensure safe operation the chaos further degrades safe vehicle operation. At a minimum an over the air recall is required to add safety critical displays/annotations to the large rectangular display between the driver and front passenger similar to Y and 3 models. As noted above I also have hardware related concerns on my vehicle which at times appear to be masked/accommodated by the firmware but are more evident on secondary systems independent of safe vehicle operations.

NHTSA ID

11516156

Incident

Apr 9, 2023

The Traffic-Aware Cruise Control has been braking unexpectedly and for no valid reason. The most recent example was when we were driving along US Hwy 24 between Wilkerson Pass and Fairplay, CO. The car suddenly braked even though there was no hazard. This has been happening regularly on this drive, in both directions, multiple times per drive. When this happens, the road is generally straight, with little, if any, elevation change. This is a safety issue because if this happens when a car is driving closely behind us, the unexpected braking could result in a rear-end collision. I have not reported this to Tesla because I understand this is a widespread issue that many people encounter, so I believe Tesla is fully aware of the issue. This problem seems to have gotten significantly worse after Tesla deactivated RADAR in the vehicle (without my consent). My understanding is that they are now using only cameras to manage Traffic Aware Cruise Control. Regardless of the reason, this issue has been happening with much greater frequency since around December, 2022 or January, 2023.

NHTSA ID

11506840

Incident

Feb 10, 2023

Our Tesla, in the "Full Self Drive" mode, has on more than one occasion applied the brakes suddenly without warning while traveling on the freeways. The date I indicate below was the last occurrence. I see that others have indicated this malady and I wanted to add our voice to this conversation. Thank you

NHTSA ID

11497620

Incident

Nov 16, 2022

The contact owned a 2021 Tesla Model S. The contact stated while driving approximately 100 MPH, as he took his foot off of the accelerator, with the vehicle brake control set to "aggressive slowdown," as the vehicle slowed the contact looked into the rearview mirror and observed white smoke issuing from the rear of the vehicle. The contact then depressed the brake pedal, and instead of slowing the vehicle accelerated at a dramatic rate and the contact lost control of the vehicle and left the roadway. The contact stated he was not aware of any warning lights being illuminated. The vehicle went into a ditch and continued straight following the ditch. The contact stated that the vehicle had not lost any speed, rather it seemed to be going faster. The vehicle crashed through a fence, drove up a slight berm, and went airborne. The contact's vehicle crashed into the ground, front end first, after flying 130 feet in the air, and began to roll end over end two to three times. The contact and his two passengers were unconscious after impact with the ground, the vehicle had come to a stop and caught on fire. The contact had attempted to exit the vehicle once he regained consciousness, however, he had difficulty since the driver's side door was jammed and his left ankle was dislocated and his right ankle was broken. The contact had managed to crawl out of the vehicle through the driver's side window which had completely shattered. The contact stated that the passenger in the front seat was not seriously injured, although he was transported to a hospital and released that same day. The passenger in the rear was transported and hospitalized with internal bleeding and a broken rib, the contact was not told which rib was broken by the passenger. The vehicle had been engulfed in fire and the contact had rolled into a ditch, a passerby was on the scene and called emergency services. The contact was transported from the scene by a rescue helicopter and flown to a trauma center. At the trauma center, the contact was treated for int

NHTSA ID

11495814

Incident

Jun 16, 2022

Mileage

8,000 mi

When in autopilot, at highway speeds, the car suddenly will brake. There is nothing that instigates this and it seems to be a safety hazard.

NHTSA ID

11493763

Incident

Nov 16, 2022

In August 2022 I was driving my Tesla S. I was traveling 25 miles an hour or less. I unfortunately lost consciousness for a very short time. My tesla then crashed into a parked car. There was snow emergency braking nor any emergency alarms. In theory describes shouldn’t of happened with an emergency braking system.

NHTSA ID

11492305

Incident

Aug 6, 2022