When adaptive cruise control is enabled (Autopilot, not equipped with Full Self Driving) car will sometimes brake hard as if there is an obstacle ahead, with the words "Curve Assist Active" flashing on the screen. Seems to happen most often on state highways, vs interstate. In one case last night car slowed from 65mph to 30mph, on a straight road, with no object ahead. Thankfully no cars were immediately behind or I would have been rear-ended. Happened 4 times in 500 miles of highway travel.
2020 Tesla Model 3 driver assistance complaints
Page 2 of 8: complaints 11 to 40 of 194, newest first, as owners wrote them.
Incident Date: Feb 1, 2026, 2:45 PM PST Location: Camarillo, CA (Pleasant Valley Rd & Village Commons Blvd) Description: The vehicle (Tesla Model 3, FSD Supervised) attempted an unprotected left turn. The system identified a gap but paused excessively before initiating the maneuver. After the pause—when the gap was no longer safe—the system proceeded to turn anyway, directly into the path of a speeding oncoming vehicle. The system failed to abort the maneuver after its own hesitation. It also failed to accelerate with the urgency required to clear the path. I was forced to manually override with emergency acceleration and steering into an oncoming lane to avoid a high-speed T-bone collision. This appears to be a "stale data" failure where the car executed an old plan that was no longer valid.
Vehicle Information: 2020 Tesla Model 3 AWD (Leased) Full Self-Driving (FSD) enabled Summary of Safety Issue: While Full Self-Driving (FSD) was engaged, the vehicle failed to detect roadside infrastructure and collided with multiple fixed objects, including a route sign board, a walkway sign board, and an underground electrical cable. The system did not provide adequate warnings or corrective action before impact. System jerk the steering confirmed system is engaged but did not break and drive to non-drivable area and not given any disengagement warning and totaled the car. Incident Details: • Date of incident: [XXX] • Location: On [XXX] {XXX] Piscataway, NJ 08854 • Road type: [XXX] • Weather/visibility: Clear • Speed at time of incident: <40 MPH (under the speed limit) Description: As soon as i trigger the FSD it immediately tried to navigated left or right and failed and unexpectedly veered into roadside infrastructure. The system did not slow down, steer away, or alert the driver in time to prevent the collision. The impact caused significant damage to public property and the vehicle is totaled. No injuries occurred. Evidence Available: • Photos of the scene and damage • Police report (number: [XXX] • Tow documentation • Tesla collision center estimate Reason for Reporting: This incident suggests a potential safety defect in Tesla’s FSD system related to object detection, path planning, and collision avoidance. The failure occurred without driver input and raises concerns about the system’s reliability in detecting fixed roadside objects. I request that the federal safety agency review this incident as part of ongoing evaluations of Tesla’s driver-assistance systems. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
The contact owns a 2020 Tesla Model 3. The contact stated that while the vehicle was parked, the trunk became inoperable. The contact stated that the trunk latch failed to open when the trunk release was engaged using the mobile application, the instrument panel, or the trunk release button. The contact received notification of the federal safety agency Campaign Number: 21V00D000 (Electrical System, Visibility, Back Over Prevention). The vehicle was taken to the dealer, but was not diagnosed. The contact was informed by the dealer that the cable harness was not repaired and that a zip tie was placed on the cable harness. The vehicle was not repaired. The contact stated that after the dealer visit, the trunk failure persisted. The manufacturer was made aware of the failure. The approximate failure mileage was 69,125.
While driving my Tesla Model 3 with self-driving engaged in excellent conditions, the car suddenly braked to a full stop. There was no apparent reason to do so and the driver did nothing. The road ahead was free of traffic, and no obstacles, pedestrians or animals were visible. It was possible to resume driving by turning self-driving off. Tesla forums online show many instances of others reporting similar problems in various Tesla models over several years. A rear end collision will ultimately be the result of this flaw if it hasn’t yet occurred.
Incident #1 Vehicle sitting at a red light. After several seconds the vehicle operating under Tesla FSD suddenly started to drive as if the light had turned green, which it had not. I stopped it immediately. Incident #2 Vehicle was stopped a t a red light and started forward again as it the light had changed but had not. I noticed a flashing red light at the next intersection a few hundred feet away. So, I went around the block and tried again and it behaved the same. After a few seconds it started to go again. There was not another light near where the first incident occurred.
Full Self Driving mode (with Hardware 3) consistently will enter the carpool lane when I am driving solo. In the vehicle navigation settings, I have, "use carpool lanes," unselected. It doesn't seem to use this input in it's decision to enter the carpool lane. Sometimes it is very quick to signal and then enter the carpool lane illegally that I can't respond quick enough to correct. However, it only seems to need 1 correction for it to ignore the carpool lane for the remainder of the trip. This then can/will repeat each new trip (it doesn't always occur for each new trip, sometimes it won't make an attempt to get into the carpool lane). I have sent Tesla dozens of recorded messages that it needs to be fixed. It will enter at an illegal point, crossing the solid line, this can sometimes be a dangerous maneuver as well as being illegal for a solo occupant. Also, I don't want to want to be ticketed. It's quite a stressful situation each time this occurs.
The contact owns a 2020 Tesla Model 3. The contact stated that while attempting to exit a parking lot, the rear sensors failed to operate as designed. The contact stated that the rearview sensor failed to provide an audible warning, which resulted in the vehicle bumping into another vehicle. The dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 68,238.
Subject: Urgent Complaint Regarding Power Steering Failure in 2019 Tesla Model 3 Hello the federal safety agency, I am writing to file a complaint regarding a very dangerous situation I recently experienced with my 2019 Tesla Model 3. While driving on the freeway at approximately 65 mph, the power steering failed unexpectedly. I struggled significantly to change lanes in order to exit the freeway, and it felt as though my vehicle was going to collide with other cars. After managing to get off the freeway, I nearly hit the guardrail while attempting to turn onto a side street, creating a hazardous situation. I am deeply concerned about the potential consequences; for instance, what if I had struck a pedestrian, or if the car had collided with another vehicle at high speed? I live on a winding mountain road, where I could have easily driven off a cliff. Turning the car off and back on temporarily resolved the issue. However, there are numerous complaints regarding steering rack failures with Tesla vehicles. Tesla has quoted me $2,700.00 to fix what appears to be a known manufacturing defect. They are aware of this potentially hazardous situation but are not taking responsibility for the repairs. This is a serious safety issue, and I urge Tesla to accept responsibility and cover the repair costs before someone is seriously injured or killed—if such an incident has not already occurred. Please let me know what further actions I can take to facilitate Tesla's resolution of this dangerous problem. Thank you for your attention to this matter. Sincerely,
Vehicle must have thought a shadow line in the road from a bridge indicated a wall I was about to hit, as it slammed on the breaks in the middle of the freeway. Car behind had to swerve to avoid. On the same trip, several nags of 'keep eyes on the road' were incorrect, as my eyes were directly on the road, but phone was in hand functioning as a microphone taking voice memos. Car proceeded to shut itself down while in the middle of the freeway, causing me to go slower than traffic and put me in danger as cars behind me had to swerve or lane change to avoid me as I tried to pull off to the shoulder. These forced shutdowns from incorrect 'nag fails' are causing safety issues. Nag failures should not forcibly shut the car down. Not sure if this is being enforced by the federal safety agency, or why Tesla is choosing to disable their auto steer or FSD when drivers are detected to be failing nags - nags should be there to help drivers, and potentially the nag data/cab video can be used after the fact should a user failing nags be involved in an accident for insurance dispute resolution, but shutting the cars down themselves is causing issues.
Software update was pushed onto my car, after the update the car autopilot ECU no longer works. When the ECU finally failed these features were stuck or are completely broken/not working: - Auto dim rear view mirrors (these were stuck in dim mode, preventing me from seeing in rain or darkened environments such as at night or under shade, 0% visibility under these conditions when changing lanes or reversing) - Rear view camera completely stopped functioning, as did all cameras on the car - Forward collision warning no longer works - Autopilot (ADAS features in general) no longer functioning including lane keep assist - On screen navigation is locked in place where the car failed (screen shows location where the car ECU presumably failed). I am further unsure if the following features function as required: - Airbag deployment - AEB (Automatic emergency braking)
My Model 3 failed at under 50,000 miles and gave out a series of failure warnings. It was unable to drive anymore and steering became stiff and unresponsive. In researching this I see it is a common issue with hundreds of thousands of cars affected. And the federal safety agency has an open investigation into it. Tesla as usual is denying the problem exists.
In a private parking lot, within line of sight and ample time to respond to problem I used Tesla Smart Summon. Instead of taking an obvious route through the parking lot, it narrowly hit a parked car, then proceeded to drive over a parking barrier and into a wooded field towards me and a crowded food truck area. I was unable to cancel the feature in time to stop the car from the collision as it accelerated too fast and without any initial signs of an issue. Even after canceling through the app, the car tried to continue for a brief period. If anyone was in the area or we were closer we could have been hit. Tesla replaced the cameras but claimed no responsibility for damages, citing I was "in control". There were no warning lamps or indicators of any defects before the incident. I also have the original dashcam footage portraying the incident, which clearly shows numerous safety hazards to the smart summon feature.
Rear camera works intermittently. It says it's temporarily unavailable and then it restores when car is started next time after exiting. Seems to be a sensor or camera cable issues because camera works fine when it does.
This report is filed to support the federal safety agency Investigation #PE24031. The four vehicles listed on the SGOs were manufactured when Tesla referred to the ADAS hardware suite as Hardware 3.0 (HW3). This March 2022 video recorded an incident facing into the sun in a 2020 Tesla Model 3 with HW3 installed. Tesla's ADAS is engaged and operating on FSD Beta V10.10.2 firmware. A video sensor reacts to bright sun and shade by raising and lowering its sensitivity, which may compromise exposure if it occurs once. In a series of pulsed, high-contrast lighting changes, the exposure may be less than optimal during much of the transient. The depth and duration of the exposure error will vary by the sensor's make and model. Next, See: [XXX] ) Only the video is relevant. The rear-facing camera view on the Tesla's display shows the shadow cast directly behind the vehicle, confirming direct alignment. At 0:51, the car enters a bridge section where cross-members cast shadows onto the windshield-mounted cameras, causing a pulsed lighting effect. If a video automatic gain adjustment (AGC) step is in the signal path downstream of the sensor, it may react adversely to the pulsed input. The signal path latency, processing time, and the attack and release settings of the AGC delay the output, making it out of sync with the sensor's direct output. Note: At 0:57, the driver requests a speed adjustment as the ADAS emerges from the strobed lighting. At 1:50, the visualization displays the VRUs as facing into the vehicle's path and the ultrasonics returning pings off the metal barrier to the right. Other: Social media reports indicate that interior condensation in front of the front-facing cameras can be resolved using the standard front-screen defrosting feature. There have been accounts of the interior glass becoming hazy or cloudy, and DIY YouTube videos show how to remove the camera pod and sensors to clean that specific glass area. Example: [XXX] ). INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
There have been recent reports of Tesla FSD accidents that are now under investigation by the federal safety agency relating to crashes that occurred under difficult visibility conditions. A video I recorded several years ago while driving into a fog bank in NW Washington, about an hour North of Seattle, is linked below. Seeing the fog bank ahead and with no traffic in front or close behind me, I let the car proceed into the fog until the system triggered a takeover alarm. Usually, at this point several years ago, when the driver wanted to disengage FSD, the driver did so by raising the gear selection stalk. Raising the gear stalk disengaged TACC ONLY in this incident, and Autosteering remained active. (see: [XXX] ) After disengaging TACC, the car was slowed by regenerative braking but still under Autosteering control. Turning the steering wheel finally disengaged Autosteering, but that occurred second and was delayed by the driver's confusion over why raising the gear stalk wasn't enough to stop the alarm. Applying the brakes would have disengaged FSD completely - but that wasn't wise with low visibility. I tried re-engaging FSD briefly while still in fog (not shown in this video), and the system refused. This brings to mind a previous documentation video where, with FSD engaged, turning the wheel disengaged *Autosteering, but *TACC remained active. Again, the driver was not initially cognizant that TACC was still active (see: [XXX] ). I believe a subsequent recall remedied this 2nd example, but perhaps the fog bank-type takeover alarm was not affected by that recall remedy. Finally, I have one more video documenting the ability of FSD to see under challenging conditions, in this case, light rain, heavy rain, and eventually hail. No alarms were triggered (see: [XXX] ). Note: I no longer own the vehicle associated with this VIN. See the firmware version shown in the video for approximate dates of these occurrences. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
We were driving back from suffolk virginia along [XXX] - which has two lanes in both directions. It was a sunny day with clear skies. I had cruise control enabled. There were no other cars visible on the road in either direction in front or behind us. Suddenly and without warning the car slammed on the breaks - "phantom breaking". If somebody was behind us it could have easily been a crash. We continued our journey somewhat shaken, and 10 - 15 mins later it did the same thing in similar circumstances. We contacted Tesla who said we should press a button to record an event when it happened again. On a later day it did and we sent them the information. They contacted us back and said that nothing was wrong with car. Since then I feel the cruse control is basically dangerous, so I refuse to use it. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
I am reporting a critical safety incident involving my vehicle, which occurred during rush hour on a busy highway with no traffic lights or stop signs. While waiting in the left turn lane at a center divide, my emergency autopilot braking system activated unexpectedly, causing my car's left front side to encroach into oncoming traffic. Despite my attempts to move the car, it became immobile. I attempted to reset the car by turning it off and on, but the vehicle’s computer system malfunctioned entirely. With oncoming traffic traveling at speeds of 70 mph, I had no choice but to exit the vehicle for safety. I left the car in the center divide. This incident was extremely frightening, and I am deeply concerned about the potential dangers posed by the malfunctioning autobraking system. Thank you for your attention to this serious matter.
Received several "Steering Assist Reduced" alerts when stopped in traffic last week, followed immediately by the failure of the power steering after each alert. Power steering resumed after a soft restart. Tried to make appointment at Tesla Service Center last Friday to get this addressed, but they said they had no appointments available and would not be able to diagnose my vehicle until today, August 12, 2024.. In the interim, the power steering went out again while on the freeway, forcing me to exit and restart the vehicle again. This is a clear danger to myself and my passengers. After receiving the results of the diagnosis today, they informed me that both the steering rack and harness would need to be replaced at the cost of nearly $5,000. The technician showed me some corrosion in one of the electrical connections where there had been water intrusion. I told him this was surprising since the car is relatively new and it would seem that Tesla would have sealed this connections to resist the relatively dry rainy seasons we experience here in Southern California.
I have taken my vehicle into Tesla to have the issue fixed twice. They don't know what's happening or how to fix it. My car is randomly taking the wheel and steering me into other cars / off the road. It happens once a month or so, I have a newborn baby I drive in the car and I don't feel safe driving. I've recorded the incident and Tesla Service said "that should not be happening unless I'm using auto pilot" which I never do. I've looked into lemon law but I did not purchase the car from tesla directly, I bought it from a used car dealership. I'm not sure what to do, I can't sell the car because I would still owe $10,000 after the sale. Please help anyway you can, I'm desperate for anything.
While driving on cruise control at highway speeds (75-80mph) on I-80 the car braked VERY hard and unexpectedly MANY times. There were no other cars around me, weather clear, road straight. No obstacles noticed to cause this reaction. If a car had been behind me I would have caused him to rear-end me because there was no apparent reason for the severe braking. I reported four incidents of this type to the Tesla during the drive which I believe were date/time stamped so they could diagnose (using the "report" function). I matched these with my own observations which I also provided to the service department. I have had the car diagnosed by Tesla and they claim they could not duplicate the problem and/or fix the problem.
Driving at highway speed (75 mph) using Autopilot & car rapidly applied hard braking. There were no obstacles, shadows or anything visible that should have caused this. It occurred twice over two days in different locations. If anyone had been behind me too close they would have collided with me. No other vehicle I’ve owned have done this with their implementation of adaptive cruise & lane assist. My car used to use radar and I never had this issue until vision based detection was implemented. It’s occurred numerous times over the years, but no this rapid of braking.
I was traveling on autopilot in left lane with autopilot engaged on 06/13/2024 on HW 101 at around 9:40am my car all of the sudden slammed on brakes and dropped speed from around 65mph to 30mph before I was able to react and recover speed. Reached out to Tesla on their app about this and they are sending me estimate of $275 to check it out
1.) Steering wheel,yes. 2.) I lost steering at 50 MPH with my twp daughter in backseat. 3.) Car was towed BACK to Tesla (it eas there 3 days ago for 2 front upper control arms replacement) 4.) car not inspected by anyone other than Tesla. 5.) yes 2 warnings “steering assist reduced”and “lane departure disabled”.
My Model 3 intermittently has the steering wheel locked in position, which sometimes resolves temporarily after rebooting the car. I always get a steering assist reduced error on the car, regardless of rebooting. It also no longer has lane keep capabilities or Autopilot, which involve the car automatically moving the steering. I have not gotten this inspected by a dealer or service center. The issue first appeared yesterday, after I tried to pull out of a parking lot, but I had trouble since my wheel would not turn. I will be going to a service center next week. After the errors began, I have not meaningfully driven the car, since locking of the wheel while driving is very dangerous. A handful of errors showed up on the screen (Cruise Control disabled, Traction Control Disabled, Stability control disabled, Steering assist reduced), and I did not have any regenerative braking applying. I returned safely to my parking spot. After multiple reboots of the car (pressing both wheel buttons), I found that sometimes after putting my car into Drive, my steering wheel was locked. Other times, I could turn my steering wheel without issue, but I would always receive the Steering assist reduced error.
Since the recall for Autopilot / Full Self Driving which required driver alerts (often called steering wheel nag), the alerts are now so frequent and reoccuring that it forces you to stare at the screen and not the road. If you look at the road, both hands on the steering wheel, every few seconds, as little as 10 seconds since the previous, the screen begins to flash (only at the top) indicating that you must now slightly shift your hands. These are often hard to see unless you stare at the screen and give no other noticable indicator. Recently I was just awarded a strike for not adjusting to it, about 30 seconds after the previous indication and it had no audible sound or indication the only warning apparently was a visual one. The screen is not in front of the driver like a heads up display, its off to the side. Other vehicles warn you not to use the on screen displays while driving, even tesla, so why does this feature force you to stare at the screen your entire drive. It seems unsafe to force -constant- checks of the screen from the driver to determine if you're in autopilot compliance.
Car did not react to uncoming car and accident happened. Car was totaled. RECALL NO. 23V‑838 involved as the car didn’t have the right safety controls and caused collision
When driving in "Autopilot" mode which uses adaptive speed control, the car suddenly slows down without any warnings. This happens even when there is no vehicle in front of the car and therefore slowing down is not expected. This has happened several times while driving on freeways. If it weren't for my immediate reaction, serious multiple-car accidents would have happened. My reaction has been to quickly disengage the "Autopilot" system and manually accelerating to avoid rear collisions. The other issue is the car suddenly steer the wheel and drag the car to the side even when there is no reason to do so. In such cases, I have to forcefully steer the wheel to the opposite direction to avoid collision with other cars moving on either side, or parked cars on the streets.
FSD Beta 11.4.9 and past versions. A possible explanation for some degree of phantom braking on controlled access roadways. FSD Beta reacts to a stop light at the end of an offramp when the direction of travel is inline with the ramp. This reaction does not occur in daylight, only in darkness. It occurs across multiple versions of FSD Beta and is consistent and repeatable at night under similar conditions. The point at which normal speed is resumed appears to coincide with the beginning of the offramp, but that may be coincidental. Since it doesn't occur in daylight it is less likely that the reaction is triggered by lane topography or some other factor relating to the converging right hand lane that occurs after the ramp is passed. In one test pass that was not recorded, the stoplight at the top of the ramp turned green while the braking was happening and the car seemed to react to the green light and resume speed, but that may have been coincident to the turn in the roadway or being adjacent to the beginning of the offramp. Another example where the light turned green has not happened again during tests. This test was at 3:08 am on a weekday with almost zero traffic in this direction and there were no vehicles within 0.25 mile behind the test vehicle at the time this was recorded. LINK TO VIDEO: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
I am writing to provide feedback on the recent mandated Tesla Full Self Driving software update (recall). When I keep both hands on the steering wheel, I now get constant warnings. Specifically, even when I drive with both hands firmly on the wheel at 9 and 3 o'clock and maintaining what I feel is adequate control, the system nags me with disruptive alerts. It tells me to apply pressure and flashes visuals that my hands are not properly positioned, despite both remaining clearly in contact with the wheel the whole time. I typically drive responsibly with proper grip, yet these frequent notifications are frustrating and stress-inducing. The sensors seem to be calibrated too sensitively if they are detecting grip issues when both my hands are correctly and securely holding the wheel. Prior to the mandated update, I didn't receive nearly as many warnings. The update was not helpful and makes driving more stressful and less safe if anything. I understand the goal is to enforce safe driving, but the current warnings are excessive even when drivers are maintaining proper hand positioning. Perhaps the regulations could be relaxed so alerts only activate when grip is legitimately inadequate, rather than routinely throughout normal driving. Please let me know if any further details on my experience with both hands on the wheel would be helpful. I would be happy to provide additional information to aid review of this system. Thank you for your consideration.
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