2020 Tesla Model 3 Driver assistance Problems

All Teslas vehicles running HW3 / AI3 Autopilot self driving computers have been known for years to have a defective design problem with the cooling system without its own dedicated cooling and which puts the self driving computer last in the cooling looping at the top of the cooling stack. When the computer fails and they will Tesla requires the owner to replace the computer. This does not result in a redesigned improvement to the computer or cooling system that reduces the thermal stress being applied to the new computer. Tesla is now pushing a new version of the self driving FSD software with the “v14 Lite” release over the last two weeks. This software release uses large complex software models which Tesla design to use every part of the HW4 / AI3 compute power which stressed the computer by pushing it to it compute limiting. All this compute is causing the computer to overheat and fail. Tesla then require owners who are all out of warranty now to pay thousands to replace the computer. This replacemen uses the same flawed cooling system and the same computer incapable of dealing passive compute requests on it by the latest v14 Lite software to eventually cause the computer to just require the replacement computer to eventually need yet another replacement of the same flawed design at owners cost. There is also supposed to systems which monitor the thermal stress on the computer and shut it off abruptly until it cools down which is not ideal at freeway speeds which is not happening. Recall to address and resolve the issue with improved cooling, more powerful computer that doesn’t reach maximum capacity and it’s each use, and less taxing software needs to be issue. This is a major safety design problem which Tesla has not addressed. There only solution is to just replace design constrained components with the exact same parts at owners cost. These multiple design issues can and often result is sudden shutdown of the computer, or worse case sudden complete failure.

NHTSA ID

11754878

Incident

Aug 4, 2026

I was making a right turn from the parking lot onto the street, a maneuver I have made hundreds of times previously without any issue. My foot was on the accelerator pedal as normal for this turn. The vehicle accelerated far faster than intended for this maneuver, with tires screeching, and continued across the width of the street. The vehicle's front left wheel struck the curb on the opposite side of the street from the parking lot exit. The wheel sustained significant damage, and the wheel rim was torn. When I regained my bearings, I lifted my foot off the accelerator and the vehicle slowed down. At the time, I believed a serious crash was imminent. I was able to drive the vehicle home, which was about 1 1/2 miles away, but it is not safe to drive so I won't drive it until it is repaired. I am aware that Tesla and NHTSA have attributed many prior sudden acceleration incidents to drivers unintentionally pressing the accelerator when intending to press the brake. Due to the vehicle's regenerative braking, I rarely use the brake pedal during normal driving, which makes this explanation virtually impossible in my case. I am also aware that NHTSA reopened an investigation in 2023 after learning about a potential inverter-related design flaw that could cause sudden unintended acceleration in Tesla vehicles, and that this investigation remains open as of this writing.

NHTSA ID

11753407

Incident

Jul 19, 2026

On XXX, at approximately 2:47:42 PM, I was driving a 2020 Tesla Model 3 Long Range AWD VIN [XXX] on a two-lane road in the Adirondacks with Full Self-Driving (Supervised) active. The vehicle was traveling approximately 50–52 mph. An oncoming SUV moved toward or across the double-yellow centerline while passing a bicyclist. FSD reacted with a sudden and aggressive steering maneuver to the right. The vehicle crossed the white edge line and entered the paved shoulder. Because it appeared that the vehicle might leave the roadway, I immediately took control and steered it back toward the travel lane. The vehicle then oscillated sharply in both directions before stabilizing. External telemetry shows lateral acceleration reaching approximately 0.88 g in one direction and 0.84 g in the opposite direction, with a 1.72 g peak-to-peak lateral swing. Vehicle speed fell from approximately 50 mph to approximately 28 mph during the recovery. No collision or injury occurred. The rapid deceleration and stabilization appeared consistent with possible electronic stability-control intervention, but I cannot confirm that from the available external telemetry. I have preserved the front dashcam video and telemetry file. I request that Tesla preserve and review the internal vehicle logs, including FSD commanded steering, planned path, driver steering torque, road-edge perception, oncoming-vehicle perception, stability-control activation, individual-wheel braking, and motor-torque reduction. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11753097

Incident

Jul 25, 2026

Car was sitting at a red light while in Full Self Driving (supervised). The screen showed at least four red lights. Suddenly the car started to move forward while the lights were still red. I was able to stop it from going further. This has happened before and I reported it then. If I had not had my foot near the brake pedal the car might have just run through the light.

NHTSA ID

11751847

Incident

Jul 16, 2026

On July 11 at approximately 6:47 a.m., I was operating my Tesla Model 3 on Interstate 65 in Hart County, Kentucky, with Full Self-Driving (FSD) engaged during normal highway travel. Approximately one hour earlier, I had departed a highway rest area after sleeping from the previous day’s travel. Rain developed during the trip, but I observed adequate visibility, apparent roadway traction, and I was not impaired. I was traveling in the far-right lane of a three-lane interstate. The posted speed limit was approximately 70 mph; however, FSD limited the vehicle to approximately 65 mph and displayed warnings indicating that the higher speed was unavailable. While FSD remained engaged, the system initiated a lane change from the far-right lane into the center lane. After entering the center lane, the vehicle began displaying repeated warning messages and FSD disengaged multiple times. I attempted to locate settings related to the warnings on the touchscreen but could not identify an available adjustment. During the third disengagement, I perceived that the vehicle continued braking without releasing while steering resistance increased significantly. The steering wheel then rotated abruptly, and I was unable to regain normal directional control before the vehicle departed its intended travel path and struck a concrete median. The collision caused personal injuries and substantial vehicle damage. I have not been able to reproduce the condition. The incident was investigated by the Kentucky State Police. Based on the sequence of repeated FSD warnings, disengagements, continued braking, and abrupt steering behavior, I believe this event warrants investigation. I request that NHTSA review the vehicle’s Full Self-Driving logs, telemetry, Event Data Recorder (EDR) data, steering and braking commands, diagnostic records, and software history to determine whether a vehicle or software malfunction contributed to the collision. Almost like someone had control, into the wall -KM

NHTSA ID

11750430

Incident

Jul 11, 2026

On XXX at approximately 5:00 PM, I was driving my 2020 Tesla Model 3 on [XXX] from [XXX] toward [XXX], with Tesla FSD engaged. Near the area where the center divider begins/ends, the vehicle crossed the double yellow/divider area and entered the opposing traffic lane. There was no oncoming traffic at that moment, so there was no crash, but this created a serious potential head-on collision risk. The car also did several hard jerks that aggravated my neck and back that it has been consistently doing for a long time which cause worse ongoing headaches. The system/component that malfunctioned was Tesla FSD/Advanced Driver Assistance, including lane keeping/steering behavior. The vehicle is available for inspection upon request. My safety and the safety of others were put at risk because the vehicle moved into the lane for oncoming traffic. I had to intervene and no longer feel safe using FSD. I have reported unsafe FSD behavior to Tesla multiple times before, but the issue has not been resolved. Tesla service has previously listed the concern as “FSD not working properly/test drive required” and/or general diagnosis, but I have not received a clear written resolution explaining why the vehicle crossed into the opposing lane or how Tesla will prevent this from happening again. There were no warning lamps or messages that I recall before the vehicle crossed into the opposing lane. If Tesla has vehicle logs or telemetry for the incident, I request that they be reviewed. I am reporting this because the vehicle may repeat this unsafe behavior and create a head-on collision risk. The car continues to behave unsafely and erratically. i have a log of some of the incidents. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11748025

Incident

Jun 16, 2026

Subject: Tesla HW2 FSD – Advertised Safety/Autonomy Features Not Provided Description: I am reporting an issue regarding my 2020 Tesla Model 3 equipped with Hardware 2 (HW2) and Full Self-Driving (FSD) package. Although the vehicle is listed and sold as “FSD capable,” Tesla has stopped providing FSD software updates for HW2 vehicles. My vehicle is stuck on FSD version 12.6.4 and cannot receive newer versions (v12.7, v12.8, v13, etc.). Tesla continues to advertise FSD as an evolving safety and autonomy system, but HW2 vehicles are no longer receiving the required updates to maintain or improve safety functions. This results in: • Safety-related features not being updated • Autonomy features advertised at purchase not being delivered • OTA updates being discontinued without notice • Tesla refusing to provide a hardware upgrade path (HW3) despite FSD being purchased on this VIN This creates a safety concern because the vehicle is operating with outdated perception and driving models while newer vehicles receive critical improvements. Tesla has not provided a remedy, timeline, or alternative solution. I request NHTSA to investigate Tesla’s failure to provide advertised and safety‑related FSD functionality for HW2 vehicles. Vehicle Info: 2020 Tesla Model 3 Hardware: HW2 FSD purchased on VIN (previous owner) Purchased used in July 2023 Current FSD version: 12.6.4 (no further updates)

NHTSA ID

11745633

Incident

Jun 22, 2026

Tesla was on Full Self Driving following a curve in the road were traffic lights. Lights were red Car should have stopped but did not. Ran red light with no attempt to stop or slow down.

NHTSA ID

11737235

Incident

May 11, 2026

Driving S/B on Ann Arbor Saline Road. Had FSD on the Tesla engaged. Needed to make left turn onto Maple. Left arrow light to Maple was red. Traffic light to continue straight on Ann Arbor-Saline was green. Despite left arrow being red, Tesla did not slow and ran red light to make left turn onto Maple.

NHTSA ID

11733532

Incident

Apr 22, 2026

My Tesla Model 3 was brought to Tesla Princeton Service Center on February 27, 2025 for a 12V battery replacement. During the service visit, Tesla also replaced the rear glass, citing the rear defroster as the root cause of the battery drain — a repair that was added without prior discussion and increased the total invoice from an original estimate of $180 to a final charge of $1,730. Upon picking up the vehicle, the rear backup camera, blind spot cameras, navigation system, Sentry Mode, and windshield wiper sensor were all non-functional. None of these systems showed any malfunction prior to the service visit. Tesla Princeton’s service advisor denied responsibility without performing diagnostics, and in a subsequent message admitted he could not determine the cause with certainty without diagnostics — which have still not been performed. The vehicle was discharged from a licensed Tesla Service Center in a condition non-compliant with FMVSS 111. I have escalated this matter to Tesla executive leadership in writing and am filing this NHTSA complaint to create a federal record of this safety violation.

NHTSA ID

11722273

Incident

Mar 3, 2026

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.

NHTSA ID

11720867

Incident

Feb 26, 2026

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.

NHTSA ID

11715176

Incident

Feb 1, 2026

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 NHTSA 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)

NHTSA ID

11709397

Incident

Jan 6, 2026

The newer versions of FSD do not allow driver control of the max speed. The current versions allow you to set a maximum speed with a scroll wheel on the steering wheel.

NHTSA ID

11708226

Incident

Jan 1, 2026

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 NHTSA 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.

NHTSA ID

11705132

Incident

Dec 15, 2025

Mileage

69,215 mi

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.

NHTSA ID

11701217

Incident

Nov 20, 2025

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.

NHTSA ID

11692447

Incident

Sep 15, 2025

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.

NHTSA ID

11692281

Incident

Oct 7, 2025

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.

NHTSA ID

11682956

Incident

Aug 25, 2025

Mileage

68,238 mi

Subject: Urgent Complaint Regarding Power Steering Failure in 2019 Tesla Model 3 Hello NHTSA, 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,

NHTSA ID

11680195

Incident

Aug 12, 2025

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 NHTSA, 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.

NHTSA ID

11674749

Incident

Jul 7, 2025

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)

NHTSA ID

11673796

Incident

Jul 13, 2025

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 NHTSA has an open investigation into it. Tesla as usual is denying the problem exists.

NHTSA ID

11643458

Incident

Jan 10, 2025

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.

NHTSA ID

11634598

Incident

Sep 27, 2024

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.

NHTSA ID

11627327

Incident

Feb 1, 2024