In early Nov 2025 my Tesla Model Y began intermittently showing warnings about the forward collision warning system and multiple sensors being offline. Tesla service replaced a faulty connector on Nov 3. On Nov 15, 2025, about two weeks later, the car had a sudden drivetrain failure while I was parking on a steep hill. I heard a loud bang from the front of the car and the vehicle immediately lost drive power and had to be towed. Tesla diagnosed a failed front motor inverter that blew the high-voltage pyrofuse and damaged the 12V battery; they replaced those parts. The vehicle is available for inspection and the repaired components and records are with Tesla. After that repair the car needed another visit for alignment and has continued to show worrying behavior: “VCFRONT offline/unable to contact VCFRONT” in the service menu, repeated “autopilot computer overheating” messages, intermittent loss or reduction of regenerative braking (braking feel changes unpredictably), a rear right seatbelt malfunction warning (later inspected and cleared by Tesla), and what appears to be significantly increased battery drain compared to before the inverter failure. This has now resulted in four service visits within about a month, all at Tesla service centers (no police, insurance, or independent shops involved). Tesla has confirmed the inverter/pyrofuse/12V failure and says the overheating was due to an air pocket in the cooling system, but the VCFRONT messages, inconsistent regen braking, and increased drain have not been fully resolved or clearly explained. I am concerned that a sudden loss of power, loss of regen, or failure of VCFRONT/autopilot systems could recur at speed or in traffic, creating a serious safety risk. Please note that I'm only able to view partially-complete paperwork from the latest service appointment in the Tesla app. I have requested this documentation from Tesla and will be able to provide all the service reports and communication as a follow-up.
2021 Tesla Model Y driver assistance complaints
Page 3 of 22: complaints 41 to 70 of 630, newest first, as owners wrote them.
The car has a feature called "curvature assist" that takes control of braking and steering at times when using cruise control. The incidents are at times surprising as there is no curvature present but the braking is suddenly applied. This is a surprise for both the driver and any following traffic. The car would be safer if this feature could be disabled but that is not possible.
On October 2, my Model Y battery was replaced with a defective cell. Tesla service center replaced the battery. The vehicle could not charge or operate, making it unable to be driven. Today, November 2, while driving my car, my Tesla ABS system and other battery components experienced total failure while driving. For a brief period of time, I was unable to brake completely and my vehicle felt like it was skidding. At the time this occurred, my 1 year old daughter and pregnant wife were in the vehicle. This could have been much worse.
I was driving along one of the main highways in Orlando, Florida called [XXX], on Wednesday [XXX], in my Model Y Tesla. I was between the exits of [XXX], and [XXX]. I was in the middle lane. There was a software update issued the previous Sunday. The warning came on the display that the lane changing was not valid. At that point the car took over and accelerated. The brakes would not work, until I slammed on it after 3 times, and the car began to decelerate. The air conditioner went off, along with the electrical turn signals. I as able to get off at the [XXX] exit for it is a bit of a "hill" up in Florida, but knew I could coast into a lane hopefully no one would be in. I was able to at least coast into a parking lot, and bump the car into a concrete barrier, and a tree infront of the barrier. The car would not respond to park, neutral or the emergency brake. I tried re-booting the car 3 times and nothing. I had to call a tow truck to tow to the Tesla Service Center in Clermont, Florida. They could not get it in park either and had to drag the Tesla onto the flatbed. After 5 days of not responding to my text, I walked into another Tesla service center to plead my problem. Long story short, there is an unexplained anomaly that is in the CANBUS and cannot duplicate the error. More $ to have to tested for another week. They gave me a loaner to use, a Model S. After a few days driving it the loaner screen went blank and I was stranded. I had their loaner towed back to the service center. They will not 100% address the problem. They know it is in the CANBUS system, but now I definitely am scared to drive the car or get it back. How do I know if they will really tell me it is fixed? I fear if I get back in the car. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Tesla’s Full Self-Driving (FSD) system has repeatedly demonstrated unsafe behavior in my 2021 Model Y (VIN [XXX] , ~60,184 miles). The issues involve Adaptive Cruise Control, Lane Keeping Assistance, and Forward Collision Warning. FSD frequently follows vehicles too closely, leaving insufficient distance. When I disengage, I am left with no safe option: braking hard risks being rear-ended and triggers a hard-braking event, while lifting off the accelerator leaves me dangerously close, still flagged as unsafe following. FSD often waits until less than a mile before highway exits to attempt lane changes, causing last-second darting, missed exits, or unsafe maneuvers. It also performs excessive and unnecessary lane changes that add risk without improving efficiency. Merges are frequently unsafe, forcing me to brake hard to let others pass or accelerate aggressively to avoid being cut off. On several occasions, FSD has jerked or swerved into adjacent lanes without signaling, seemingly triggered by shadows or changes in the road surface. These phantom maneuvers are unpredictable and hazardous. On [XXX] at about [XXX], at a T-shaped intersection, FSD failed to yield to a vehicle traveling straight with the right of way while I was making a left turn. I had to slam on the brakes to disengage, narrowly avoiding a collision. This was the second such incident in the same intersection in one week. These repeated failures—unsafe following, late exit attempts, failed merges, phantom swerves, and failure to yield—create significant risks for me, my passengers, and surrounding drivers. The problem has been reported to Tesla multiple times via in-car voice reports and a written service request, and logs from my vehicle should confirm these events. No warning lamps or system alerts appeared before or during the failures. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Immediately after an over-the-air (OTA) update on Aug 8, 2025, my vehicle began showing camera connection errors and disabled multiple safety/ADAS features. Over the following days, I repeatedly received alerts that AEB was unavailable. The vehicle remained drivable, but AEB and related safety functions were inactive. Chronology: Aug 8, 2025: OTA software update to 2025.26.6 completed. Right after completion, the touchscreen displayed camera connection errors and disabled AEB / Autopilot / cruise control. Aug 11, 2025: While driving, I again received an “AEB unavailable” alert. Similar alerts appeared intermittently throughout the week. There was no water intrusion, impact, or external damage. Cameras were clean and unobstructed. I scheduled the earliest available Tesla Service appointment and reported the AEB failure as a safety issue. Service diagnosis: Tesla diagnosed a failure of the Autopilot computer (HW3) and ordered a replacement. Cost/coverage: I requested that the repair be covered by Tesla because the failure started immediately after the OTA update and I am a paid Full Self-Driving (FSD) purchaser. My request was denied; I was charged ~$1,600 (slightly discounted) for the computer replacement. Safety risk description: The failure disabled AEB and other forward-collision mitigation features without an external cause, beginning minutes after the OTA update. I consider this a safety defect because an advertised crash-mitigation system became unavailable during normal use, increasing crash risk. The timing suggests a possible software–hardware interaction (software change triggering or revealing a hardware fault) that could affect other vehicles.
I’ve had to replace the steering rack, upper and lower control arm for the left wheel, entire computer motherboard. I drove the car for less than 70k miles and zero accidents and zero modifications. Yes I am open for inspection. While driving with fsd lane keep failed causing the car to veer to other lane. The tesla repair shop said the steering rack was sending errors and the whole rack needs to be replaced. They said it was both electrical and mechanical failure. Previously I’ve had the control arms replaced because it was making clicking noise when I turn the wheel. They said it was due to front compliance link and lateral link issues. Also had entire computer board replaced previously. The error message after the incident was lane assist disabled, steering assist reduced. In the maintenance mode it said “ The drive interface (DI) or drive inverter (DIx) electronic control unit (ECU) detects a low voltage (LV) battery undervoltage event.”
The GPS and camera functionality went out on the same day several days ago. The car thinks it is at Tesla’s headquarters in CA and so you cannot find a charging station near your actual location, and no cameras work meaning the additional safety features for collisions do not function at all. This is a widespread issue based on Tesla user forums.
All cameras went blank on vehicle 4 year and 7 months old. All driver assistance systems became suddenly disabled. Tesla service diagnosis established that computer needs to be replaced for a cost of $2,000.
I was driving on an intestate hwy I-70 east bound on the left lane and I was about to take the exist 62. I was on cruise control and it was raining and the road was wet. When I tried to change the lane the car auto braked and car skid and rotated 360 degrees and hit the railing. The car got damaged front and back. Luckily there was no vehicle near us so my family was safe. But I dont know why the car auto braked and one should not hard brake when the road is wet. I called 911 and tesla insurance. I took the car to the body shop and they are deeming it total loss. Please take necessary actions so it doesnot happen again
- Computer appears to stop working in colder temperatures (or random). - ALL cameras, including rear view camera (needed for backing up) and side cameras stop working. Error message shown on touch screen saying cameras are not available. - All road sensing information including other cars, lanes markers (everything) disappears from touch screen dashboard and no longer works. There are no longer any warnings for anything. - GPS tracking stops and no longer tracks along with the car. Car becomes a safety hazard due to poor visibility. Especially evident during reverse.
While reversing in this 2021 Tesla Model Y (software v12, 2025.14.1, Full Self-Driving Supervised), the vehicle’s ultrasonic sensors showed a wall directly behind on the display. However, the Tesla Vision camera system did not visually render the wall, and neither Automatic Emergency Braking (AEB) nor Obstacle-Aware Acceleration activated. The car reversed under driver input directly into the wall, causing a collision with property damage. The safety defect appears to be that the ultrasonic sensors, although still present and visually displayed, are no longer integrated into the collision avoidance systems after Tesla’s software updates activating Tesla Vision. As a result, the AEB and OAA systems seem to rely only on camera data, ignoring ultrasonic sensor input — leaving a dangerous blind spot in reverse. This problem affects safety because the driver receives no warning that AEB or OAA will not engage based on ultrasonic detection alone. Tesla’s updated owner manuals (2023.12) state that AEB is now designed to work in reverse, but in this case, the system failed. The issue has not yet been inspected by Tesla or a dealer but appears reproducible on vehicles with ultrasonic sensors running Tesla Vision software. This is likely a widespread defect affecting 2020–2022 Tesla Model 3, Y, S, and X vehicles equipped with ultrasonic sensors but updated via software. There were no warning lights or system alerts before the failure. I request the federal safety agency investigate whether Tesla’s software has disabled or failed to integrate ultrasonic sensor data into rear collision avoidance, creating an undisclosed safety risk for owners.
The Adaptive cruse control would stop working off an on. also it would give false land departure warnings causing driver to swerve thinking they were going to run into another care
The front collision warning is too sensitive and reacts unnecessarily to many events that are not a risk for collision. In addition, the sound of the warning is too loud causing the driver to become unnecessarily startled and may cause possible loss of control of the vehicle.
Per the Tesla service team, there is a defect in the car computer which causes intermittent signal of the backup camera, failure of automatic emergency braking, and also Autopilot unavailability in a 2021 Tesla Model Y with less than 40k miles on it. This issue only occurred after a software update and affects key safety features such as blind spot warning proximity warnings. The Tesla service team said the only way to solve it was to replace the entire car computer and charged us $2,583 for their own product defect. The car did issue alerts to us saying that Autopilot and automatic emergency braking were unavailable, but did not detect issues with intermittent camera signal.
Several times on residential speed control the system does not recognize yellow flashing school speed reduction signs. Never slows or breaks. The speed of 25 mph does not register on the screed (other speed signs do). I told tesla service center when other services were being done. They said they were aware. I have seen no improvement over the last several months
Autopilot suddenly slams on the brakes going [XXX] on [XXX] just north of Ankeny, IA when you hit the underpass at [XXX] [XXX] , [XXX] ). This happens every time for the past year about. No software update has fixed this yet. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Since March 2024, FSD has failed to function as designed. Tesla denied any problem with the vehicle until October 2024, when a manager told me it's a known issue with no available fix. The issue started with FSD not recognizing traffic signals. Meaning that regardless of whether a traffic light was green or red, the vehicle would treat it like an 4 way stop. It would come to a stop and then proceed through the intersection if it didn't detect immediate cars. This was dangerous and Tesla refused to acknowledge the problem for months. Since then the issue has evolved with FSD only engaging in certain situations (interstate driving). As of the most recent update, FSD won't engage at all.
The rear view camera didn't work, neither did the windshield wiper. When turning left or right, the sensors did not display anything, the display no longer displayed any distances to other cars, proximity lines, nor speed limits. GPS also did not work. The problems were confirmed by the dealer (and fixed), but they charged us even though the incident involved a software update on their part that made most advanced safety features unavailable available. When we tried to reverse, we could not see anything. When we tried to make a left or right turn, there were no sensors available to sense blind spots. When we tried to understand the speed limit or change lanes, the information was not available. Wipers were patchy in use Auto pilot also did not work. Warnings kept beeping while driving, but we could not turn it off, serving as a distraction to driver, but Tesla was unable to address the repair due to their mass recall of other cars (with similar issues).
This complaint addresses the recent changes made to the cruise control system in Tesla vehicles, as per the federal safety agency guidance in 2024. While the update aims to simplify the activation of enhanced cruise control, it introduces significant disadvantages and safety risks that need to be addressed. 1. Cruise Control Activation Update: the federal safety agency Guidance: In 2024, Tesla was required to modify the activation process for enhanced cruise control, allowing it to be engaged with a single pull when the option is selected. There are two options available: single pull and double pull. Advantages: The update simplifies the process, enabling users to activate enhanced cruise control with a single pull, which is more convenient and user-friendly. Disadvantages: When the enhanced cruise control is activated and the turn signal is engaged, the system automatically deactivates. This deactivation causes the vehicle to stop maintaining its set speed, leading to a slowdown or complete stop. 2. Safety Risks: Driver Reaction: The sudden deactivation of cruise control requires drivers to quickly move their feet back to the gas pedal to maintain speed. This is particularly concerning when attempting to change lanes or merge into tight spaces, where maintaining speed is crucial for safety. Loss of Safety Features: Upon deactivation of the enhanced cruise control, the vehicle no longer maintains a safe following distance, transferring full control back to the driver. This abrupt transition means that the driver is left without the system's assistance to ensure safe driving and timely reactions, potentially increasing the risk of collisions. Increased Driver Workload: Drivers must frequently reactivate cruise control after changing lanes, which demands additional effort and diverts attention from the road. This constant need to manage the cruise control system can lead to driver distraction and increased cognitive load, potentially compromising road safety. 3. Recommendations: see attche
This report addresses concerns regarding recent safety updates in the Tesla Model Y, specifically focusing on the "Rear Cross Traffic Alert" and the blind spot warning system. These updates are intended to enhance driver awareness and prevent collisions. However, there are significant shortcomings in their current implementation that may compromise driver safety. 1. Rear Cross Traffic Alert: Intended Functionality: The "Rear Cross Traffic Alert" is designed to warn drivers of approaching vehicles from the side when reversing, thereby preventing potential collisions. Current Implementation: The system currently highlights a portion of the infotainment screen in red when a potential hazard is detected. There is no accompanying audible alert to notify the driver of the danger. Safety Concerns: Drivers are likely to be looking over their shoulder or at their mirrors while reversing, rather than at the infotainment screen. The lack of an audible alert means that drivers may not notice the visual warning, especially if their attention is directed away from the screen. This could lead to an increased risk of collision, as the visual cue alone may not be sufficient to capture the driver's attention. 2. Blind Spot Warning System: Intended Functionality: The blind spot warning system is designed to alert drivers of vehicles in their blind spot when the turn signal is activated, helping to prevent lane-change collisions. Current Implementation: Similar to the Rear Cross Traffic Alert, the system highlights the screen in red when a vehicle is detected in the blind spot. No audible warning is provided to alert the driver. Safety Concerns: In adverse weather conditions, such as rain, drivers may rely more heavily on blind spot warnings due to reduced visibility. Drivers typically turn their heads to check for vehicles, which means they may not see the screen's visual alert. Without an audible warning, drivers may inadvertently change lanes into an occupied space, increas
Summoned my car in parking lot. Vehicle showed on app that it planned to go straight then turn left but instead cut to a left and thus colliding with the car that was parked next to me. I have the footage if needed. Car should have stopped instead, or followed planned route. I was staring at the car the whole time and it looked that it was going straight, even after colliding, it looked like it was aimed to go forward. The car created a log of what happened if needed.
To Whom It May Concern: I am writing to report yet another dangerous incident of phantom braking in my Tesla vehicle. As a Tesla owner who has previously filed multiple complaints about this issue, I am deeply concerned and frustrated by the lack of resolution to this potentially life-threatening problem. Today, I experienced a terrifying phantom braking event that nearly resulted in a catastrophic accident. I was driving on a completely empty road with no traffic in sight - no vehicles behind me, none in front, and none approaching from any direction. Suddenly, without any apparent trigger, my Tesla aggressively applied the brakes, violently decelerating from approximately 25 mph to just 3 mph in a matter of seconds. This abrupt and unnecessary braking action caught me entirely off guard. The force of the deceleration threw me forward, and I narrowly avoided losing control of the vehicle. Had there been any traffic behind me, I have no doubt this incident would have resulted in a severe rear-end collision. The frequency and unpredictability of these phantom braking events make me feel unsafe every time I get behind the wheel. It’s only a matter of time before one of these incidents leads to a serious accident or fatality. Despite multiple reports to both Tesla and the federal safety agency, this critical safety issue remains unresolved. I implore the federal safety agency to take immediate and decisive action to address this problem. The safety of Tesla drivers, their passengers, and other road users is at stake. Please investigate this issue thoroughly and compel Tesla to implement a permanent fix for the phantom braking problem. Your swift action on this matter is crucial to prevent potential tragedies on our roads. Sincerely, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Tesla released a feature called Obstacle Aware Acceleration. The Owner's Manual states: "Obstacle-Aware Acceleration is designed to reduce the impact of a collision by reducing motor torque and in some cases applying the brakes, if Model Y detects an object in its driving path. The touchscreen displays a visual warning and sounds a chime when the brakes are automatically applied. For example, Model Y, while parked in front of a closed garage door with Drive engaged, detects that you have pressed hard on the accelerator pedal. Although Model Y still accelerates and hits the garage door, the reduced torque may result in less damage. Obstacle-Aware Acceleration is designed to operate only when all of these conditions are simultaneously met: Drive or Reverse is engaged. Model Y is stopped or traveling less than 10 mph (16 km/h). Model Y detects an object in its immediate driving path." However, my vehicle (and at least some other Model Y Performance models) do not behave in this manner. Rather than reducing motor torque when all of the above conditions have been met, it reduces torque every time the vehicle accelerates from a stop. This has been replicated by my local Tesla Service Center, and they confirmed the vehicle did not detect any objects in it's path. This is dangerous because the vehicle accelerates so slowly from a stop that I may not be able to avoid an accident if the vehicle doesn't accelerate as expected.
Twice, while in full self-driving mode on I-395, my Tesla has made the potentially fatal mistake of trying to turn the vehicle directly into the closed gates of the so-called "hot lanes" (which separate the north and sound bound lanes) and into on-coming highway traffic on those lanes. This is a serious safety issue that must be fixed IMMEDIATELY. This happened most recently on Sunday October 20, 2024, when I was driving south-bound on I-395 with my wife and son in the car. I was in the far left lane with "full self driving" activated. The hot lanes were to our left with all traffic on those lanes driving northbound. The gates to the hot lanes were closed to southbound traffic to prevent someone from driving directly into oncoming traffic. Shortly before we were about to pass those closed gates, the Tesla left indicator light came on and the car began to turn. The map showed the car was trying to turn us directly into the closed gates and oncoming traffic. Fortunately, I was paying close attention to this potential problem because the identical thing had happened previously, during the prior 30 day period when full self-driving was made available for free to all Tesla owners in April 2024. On that weekday evening, I was my driving my son northbound on I-395 after his basketball practice. The hot lanes were running southbound. Once again, as I approached the closed hot lane gates, the left indicator light came on as the car prepared to drive us through the closed gates and into the on-coming hot lane traffic. I am not a Tesla critic. I really like the car, but please address this issue ASAP before somebody gets killed.
This morning when operating on FSD trail version, at tye stop sign I had to make left. This is at intersection of Rueslane and Old bridge Turnpike of East Brunswick, NJ. My car started to make a left when there was an incoming car from the left, and they do.not have to stop. Thank fully the car on the left applied instant brakes and avoided tye accident. FsD failed to make right judgement if left turn was possible or not. Fsd version is v12.3.6
My Tesla still has the phantom braking problem. It is repeatable and consistent. I can tell when it will occur on a route that I drive regularly. Day or night does not seem to alter the occurrence. There is no indication on the touch screen when this occurs. Traffic volume does not matter. It always occurs at the same places so it should be relatively easy to fix if someone would just monitor my computer when it occurs. I regard this as a dangerous problem on the freeway because my car suddenly slows and if the person behind me is not paying attention, I am going to be rear ended. Such a serious fault for a vehicle that performs so well otherwise. Since Tesla does not have a service center in my town no one has offered to look at the problem but since it has been reported so often, I'm not sure they would. I would be happy to demonstrate the problem to a technical person who might be able to diagnose it.
The issue appears to be an acceleration malfunction and brake failure in my 2021 Tesla Model Y. The vehicle is available for inspection upon request. On [XXX] at [XXX], while waiting for the garage door to open, the car experienced an unknown unintended acceleration malfunction, surging forward uncontrollably. It didn't wait for the garage to open, crashed through the garage into the family room, causing significant structural damage to the framing and door. The City of Eastvale declared the house unsafe, sealing it off. I am now homeless and staying with friends temporarily. During the crash, the airbags did not deploy, and the ABS system failed, preventing an emergency stop. The car stopped 4-5 feet away from my wife, who was on the sofa, posing a critical life-threatening situation. Thankfully, [XXX] and I survived, but this incident caused severe mental trauma for my family. We have not reported the incident to Tesla. The dashcam footage appears deleted during the crash and the car seemed to have only recorded footage before the crash and after. This issue has not been reproduced or confirmed by any dealer or service center, but further investigation needs to be done. The vehicle has not been inspected by Tesla or any service center. However, the police and insurance representatives have been involved. We are coordinating further inspections to find the cause of the acceleration and brake failure. We aim to invoke the Tesla Event Data Recorder (EDR) tool to investigate what exactly went wrong with the car. There were no warning lamps, messages, or symptoms before the incident. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
When driving on highways the car will jerk the steering wheel and cause the car to turn when the car is in the center of the lane. This causes the driver to counter the force from the steering wheel to keep the car on the road. This only happens when autopilot and full self driving are not being used. I have taken it to the service center twice. The first time they said it was an issue with the car alignment so they realigned the tires and the second time they said it was a problem with the car’s computer so they replaced the computer. This continues to happen and is dangerous. Sometimes it will give a lane departure warning while other times there are no warnings.
What component or system failed or malfunctioned, and is it available for inspection upon request? System computer. After a Over the Air (OTA) update, most driver assistive functions are inoperative. System feedback display sometime goes black (speedometer, controls, backup camera, etc). After manufacturer serviced car to verify and resolve issue, issue was not corrected. Screen continues to error, asking for a software update. Per the manufacturer this is a computer issue with the cache, and being told to replace computer. How was your safety or the safety of others put at risk? Since the driver feedback display and cameras are sometimes non-functional. Back up camera can be unusable, lane keeping, and cruise control are inoperative. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? By an manufacturer repair center. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No, they appeared after an OTA update 9-AUG-2024
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