2021 Tesla Model Y Complaint Log

- Open rear passenger door and secured child in car seat. - Try to open driver side rear passenger door - which would not open. - Tried to open rear passenger door where child was in, and the door would not open. - Car was powered off and none of the doors opened. - After approximately 5 minutes, front passenger door opened, and child was removed form the car through the front door. - Requested roadside assistance with the diagnosis of 12V battery failure. - No warning that 12V battery was near end of life - Software updated the previous night.

I was driving on the highway with my 2021 Model Y Tesla when control arm detached from the frame. Tesla said they could not confirm if it was covered on the warranty over the phone.

The main vehicle computer (MCU) failed. The problem first appeared in May 2024 with intermittent rear camera malfunctions. It has since worsened. Most recently (08/28/25), the center display went completely black and the vehicle became inoperable — I could not start or move it. This left me stranded in a dangerous neighborhood late at night and required the car to be towed. When the display fails, I lose access to the rear camera, climate controls (including defrost), and turn signal indicators. These are safety-critical systems, and in this case the failure also disabled the ability to drive the vehicle entirely. The problem has been reported to Tesla. They inspected the vehicle but claimed the earlier camera malfunction was unrelated to the current computer failure. No independent mechanic has inspected it. The failures are ongoing and reproducible. No warning lights or alerts appeared before the system shut down. The vehicle is available for inspection upon request. Being that this issue originally arose back in May, 2024- it should fall under Tesla’s warranty which expired in December 2024.

I noticed the windshield washer nozzle on the passenger side isn't either working or not there. I reached out to Tesla, and also stopped by a Local Dealership and they told me that it would cost me out of pocket, since it's out of warranty. Secondly, the left side driver repeater camera has a Glare when turned at night time only. which is quite dangerous due to very less visibility due to the Glare of the Turn signal light that causes the repeater camera to function properly. this is a on going known problem. I have reached out to Tesla for this matter. and I was advised that it would not be covered since it's not under warranty. This issue should be a recall that Tesla should fix. this isn't an issue caused by normal wear and tear it's a manufacturer defect.

After 4 years of ownership, the HV battery has failed. This has put the car at risk it stopped charging and without charging the car was no longer drivable. The battery was overheating the car was very hot the AC stopped working. This put the car at risk when drive the battery dropped significantly while driving. Yes we got it inspected they said that the battery is failing and needs to be replaced. I have a quote about the replacment parts. There was a message at the end that the battery was unable to charge.

I have an alert that says Front Passenger Safety Restraint System Issue and Service is required. This is a major safety issue and the Tesla Service Center says I need to pay $800 to fix it. This is a manufacturer issue and the cost should not be incurred by the vehicle owner. This issue puts my family safety at risk and the light is coming up everytime I drive. I need TESLA to review it and fix this at no cost.

On August 20th, 2025 at 2:50pm, my eight-month-old infant was trapped inside my Tesla Model Y for approximately 30 minutes due to a critical systems failure. The vehicle experienced an error with the 12V battery that rendered the doors, windows, and trunk completely inoperable, preventing any means of access or escape. My infant was flushed, diaphoretic, and crying while stuck in his car seat with an indoor temperature exceeding 104 degrees fahrenheit. Despite all attempts to override the system, the car remained locked, and the battery dead, and emergency services had to be contacted. Officers from the Santa Barbara Sheriff’s Department, California Highway Patrol, and Montecito Fire Department arrived on scene and, in order to rescue my baby, were forced to smash a window to gain entry. The police officer was advised by a Tesla representative to do so, as he confirmed there would be no way to override the system to open the doors. My baby was found screaming in a pool full of sweat and was carried to an ambulance, where the paramedic warned me of concerning vital signs and advised me to go to the Santa Barbara Cottage Hospital to have his condition assessed and treated, if necessary. I have obtained a copy of the police report (Case No. XXX) and will provide it upon request. Tesla confirmed that this problem with the 12V battery is common, nonetheless we were made to pay for a new window and a battery replacement. There were no warning signs leading up to the shutdown and not notifying us of this system failure and the risk involved is complete negligence on behalf of Tesla.

Brake line failed at the left rear tire. Corroded line. The line is corroded on the right rear also. These are my observations. The brakes failed when driving locally at lower speeds so the car was able to eventually stop due to the regenerative braking. Will be towed to the dealer for inspection/repair. Inspection/repair will occur on Sept.15, 2025. No warning until after the failure.

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.

Summary of Issue: The vehicle has experienced intermittent drive disconnections without warning. This occurred multiple times on August 9–10, 2025, during trips between Palo Alto and Monterey. The vehicle is available for inspection upon request. What component or system failed or malfunctioned, and is it available for inspection? The suspected component is the drive unit (covered under Tesla’s 8-year Drive Unit & Battery warranty). The vehicle and its systems remain available for inspection by NHTSA or Tesla. How was safety put at risk? The intermittent drive disconnections can result in sudden loss of propulsion without warning while the car is in motion. If this occurs at highway speeds, it creates a serious safety risk of collision or loss of vehicle control. Has the problem been reproduced or confirmed by a dealer or service center? Tesla Service has attempted to inspect the vehicle but reported “no fault found.” Because the issue is intermittent, Tesla did not reproduce it during their inspection, though I documented it on August 9–10, 2025. Has the vehicle/component been inspected by the manufacturer or others? Yes, the Tesla Service Center inspected the vehicle 25 August 2025. However, Tesla has refused to provide a detailed record of what diagnostic steps were actually performed (log review, physical inspection, or drive unit stress testing). Were there any warning lamps, messages, or other symptoms? No warning lamps or messages appeared at the time of the failures. The vehicle resumed propulsion after several seconds, clearing the condition without leaving an active customer-facing alert. Concern: Because the failure is intermittent and leaves no persistent alerts, Tesla has returned the vehicle without resolving the problem or providing adequate documentation. This leaves a potential safety-critical drivetrain failure unaddressed. Requested Action: I request that NHTSA investigate potential drive unit intermittent disconnection failures in Tesla Model Y

A [XXX] child could not open the left rear passenger door due electrical failure. This is a known safety failure for Teslas. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

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.

Both front half shafts failed and had to be replaced by Tesla. I did research and this part is known to be substandard, was recalled in China, and remains a problem in the US.

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.”

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.

8k miles after warranty expired, I got this notification in my Tesla. BMS_u018 Maximum battery charge level reduced OK to drive - Schedule service Car won’t charge anymore, Tesla says it’s a High voltage battery issue and are charging $14,000 out of warranty. Online it says others have the same issue of it not working sometime after warranty expires. Tesla states batteries should run from 200-300k miles? Wanted to make this complaint since I don’t do anything to cause the battery to have a malfunction this early. No supercharging or charging to 100%.

The vehicle lost steering at 10 mph as a bolt from the front suspension's upper control arm and lateral link fasteners became loose and detached rom the vehicle. The wheel was completely misaligned, and the vehicle was not drivable. The vehicle could not be moved to the side of the road, putting my safety and the safety of other drivers at risk. I fear that this could have been a fatal accident had I been on the highway. This issue has been confirmed by Tesla Service Center, and they acknowledged that this is a known issue. There were no warning indicators or recall notices sent to warn of this known issue. My vehicle should have been recalled. Tesla is making me pay $3,000 for repairs despite knowing this is a manufacturer defect, and they are continuing to put lives at risk by not issuing a wider recall.

On [XXX], after placing my young child in my Tesla and closing the door, the 12V battery failed suddenly and the vehicle became inaccessible. I was unable to unlock or enter the car. I did not receive any warning or alert that the 12V battery was about to fail. The vehicle was in my garage, and the window automatically cracked, which allowed me to monitor my child while I sought help. I called Tesla Roadside Assistance at 8:59 AM. During the call, the representative reassured me that help was being dispatched and at times described the service provider as “on the way” (timing details such as “within ~45 minutes” and the length of the initial call are my best estimates). After continued waiting with my child confined inside the vehicle, I contacted emergency services due to the safety risk. I called 911 at 10:03 AM. I later had the 12V battery replaced at my own expense. This incident involved a sudden electrical failure without warning that resulted in a child being trapped inside a disabled vehicle, and I am also concerned about the accuracy and effectiveness of roadside assistance dispatch communications during the incident. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2021 Tesla Model Y. The contact stated that his wife drove to a nearby park and while attempting to leave the park, the vehicle was started, and after his wife put her son and daughter in the vehicle, the vehicle shut off unintendedly and all the doors locked. The doors failed to open with the mobile card or the manual key. The contact stated that the manual card was inside the vehicle. The contact stated that the temperature control was off inside the vehicle and the screen was inoperable. There were no reported injuries. The contact broke the window to enter the vehicle. There were no warning lights illuminated prior to the failure. The contact called a tow truck, and the vehicle was jumpstarted. The contact stated that the vehicle operated as designed the following day. The contact stated that an unknown local dealer was contacted. The dealer informed the contact to send the data pool. The vehicle was not diagnosed or repaired. The manufacturer was contacted and informed the contact to complete a report form. The failure mileage was approximately 88,070.

On July 5, 2025, I entered my vehicle parked in my home garage and the door latched shut. Upon putting my foot on the brake. Center screen was blank (did not power on). I attempted to press the unlock button on the door and there was no sound from the motor to open the door. The door was still locked from the inside of the vehicle and I was locked inside. I waited around 5 minutes (after attempting to call my wife to try to let me out of car and tried the open the drivers door again by pressing the exit button. The door unlatched by normally the window rolls down partially to exit. This time the window did not move and I have to force the door open by pressing my shoulder hard against the interior door panel. I hear a popping sound from inside the door and the window would not roll up. I did not drive the vehicle fearing that the car would not start and my family could be trapped inside the car. I created an appointment for Tesla service for July 7, 2025 for the door locks and the driver's window that would not roll up completely and also would roll down but return to a 70% rolled up position automatically. I did received an error warning on the late evening of July 6, 2025 that the 12 volt battery voltage was low on the main center screen of my vehicle. I took the vehicle to Tesla service on July 7, 2025 and it was determined that the 12 volt auxiliary battery that was faulty and my window was repaired and recalibrated. I never saw an alert for the 12 volt auxiliary battery low voltage prior to when I was locked inside the car.

There is a latch sensor open kept Coming on. I have been to the Tesla dealership twice and nothing has been resolved.

Plugged a charger cord for a Garmin watch into the center console USBC right side port. Overnight the USBC port, while connected to the cord but not to the watch or any other device, overheated and melted. It burned the cords male connection into two pieces and melted plastic into the center console. The male end of the cord is now fused into the USBC port of the car. No messages/alerts on the car. Manufacturer inspected and invoiced $970.00 for parts and labor. From forums online this is not the first instance a similar situation has occurred. Assuming paper or another flammable substance was in the console, it would have caught fire

Vehicle: 2021 Tesla Model Y VIN: [XXX] Date of Incident: [XXX] On the afternoon of Sunday [XXX], while my Tesla Model Y was parked at home and charged to approximately 80%, both my wife and I attempted to enter the vehicle to attend an important appointment. Upon approach, we found the car completely unresponsive — no power, no screen activity, and we were unable to start the vehicle or release the charging cable. Despite this, both front doors could still be manually opened. However, the frameless windows did not automatically lower as they normally would when opening and closing the doors, As a result, when we attempted to close the doors, both front door windows shattered, as the glass was unable to lower and collided with the door frame. This incident clearly resulted from a critical system failure that disabled essential safety and design functions. The vehicle was not damaged prior to this event, and there was no impact or external force involved. This malfunction rendered the vehicle inoperable and directly caused costly damage. I am requesting the following: A full investigation into the root cause of the power system failure Immediate replacement of both shattered front windows at no cost A written explanation of what caused the vehicle to become unresponsive This issue raises serious concerns about vehicle safety and reliability, especially when essential functions like glass auto-drop are disabled without any warning, leaving the glass vulnerable to breakage. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Vehicle shut down and individual was locked in the car. Unable to release the doors. Incident occurred on June 23rd with a temp of 95 degrees and higher heat index. Individual was Stuck in the car in a parking garage with no one around to hear screams for help. Called home for assistance to come to the parking garage to help free them. Informed by online article about the Model Y 2021 model having other incidents of the same. We thought it was just a freak occurrence of our vehicle until reading about the probe. No warning indications that the auxiliary battery needed replacing that controls such functions. Tesla's Repair Notes: "The vehicle was unable to power on when parked, which was verified by the technician's inspection and the customer's report. The issue was caused by a failing 12V battery. The technician replaced the 12V battery to resolve the problem. After the replacement, all systems were checked and confirmed to be running properly"

My 2021 Tesla Model Y experienced a sudden loss of steering assist, resulting in an extremely heavy steering and loss of steering ability, at highway speed. I needed extreme efforts to push the steering wheel to go off highway to avoid accident. This happened on 6/14/2025 around 3PM. Tesla service diagnosed "internal electrical/mechanical steering rack failure", but no recall was issued for my VIN. I've reviewed NHTSA Recall SB-25-00-004 (2025) for 2023 Model Y involving EPAS/steering assist failure. The symptoms in my car appear identical. I believe the issue may affect more model years than the recall currently covers and request HNTSA investigate further.

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

I was driving slowly at a parking lot of a supermarket and preparing to park on my right. When I saw a car on my left front backing up, I pressed on the brake pedal immediately and turned the wheel slightly to the right. All of a sudden, the Tesla accelerated on its own with a very strong force and high speed, with the wheel turned sharply on its own toward the right. The Tesla then run through the steel fence of the parking lot, flying past the sidewalk, and finally settled on top of a big rock on the ground (which is placed there to protect the supermarket building). All of these happened so fast with such a strong force and all in an unintended manner. I was not injured and luckily no other persons or vehicles were involved. However, the vehicle was totalled and there were damage of the supermarket property.

The bolts connecting the front upper control arm and steering knuckle may not have been tightened properly, potentially leading to detachment.  This causes the car to have squeaky, leaking noises when going over bumps and making turns.

Upper and lower control arms failed, and front suspensions bushings became torn. The car did not present any warning lamps or warning messages. The issue became apparent when a loud creaking/squeaking sound started coming from the front of the vehicle, and could be reproduced by turning the steering wheel, or by accelerating or braking. Control arm and suspension failures have been a frequent issue amongst Tesla owners, and the NHTSA should consider a recall for the design flaw.

[XXX] , my [XXX] son, was strapped in his car seat, wide-eyed and confused, as we sat trapped in our Tesla for thirty agonizing minutes. The battery had died without warning, leaving us locked inside our own garage. No power, no way to open the doors. I tried to keep [XXX] calm, singing his favorite songs, but my heart raced as I called for help. A tow truck finally arrived and jumped the car—not enough juice to start the engine, but just enough to unlock the doors. Freedom at last. Tesla’s response? No roadside service; they insisted the car be towed to their service center. Easier said than done—the tow truck couldn’t maneuver it out of the garage. Frustration mounted as I realized I’d have to miss work. Days later, I drove to the service center, where they replaced the battery. But the ordeal wasn’t over. The trim was damaged during the chaos, and now every drive is accompanied by relentless wind noise, a constant reminder of that day. [XXX] still talks about being “stuck in the car,” and I can’t help but feel let down by a system that left us stranded. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

“Front passenger Safety restraint system fault, service required” RCM2_a636 message keeps appearing on the screen. It happened right after I bought the car, so I took it to Tesla to fix. It went away for a few months and now it’s back again. According to Tesla, this fault, “ Based on the airbag system's self-diagnostic checks, a persistent fault has been detected in one or more safety restraint components. This could involve seat belts, impact sensors, occupant sensors, or related safety components. • If the airbag warning indicator stays on, the vehicle should not be driven until inspected. • Recurring faults require immediate Tesla service attention. • Pre-tensioner or sensor damage can compromise proper seat belt functionality.” This is a serious safety issue that should be addressed in a recall as it could jeopardize occupant safety of the seat belts or air bags do not work. It also appears to be somewhat widespread and persistent. Tesla also does not appear to have a permanent fix as the first time I took it in they made a comment about one repair already having been done on this before I got the car as a certified used one from Tesla.

In May 2025, Tesla pushed an over-the-air (OTA) software update overnight while the vehicle was parked. When the vehicle was started the following morning, the update had failed mid-process and stalled at approximately 50%. Immediately upon startup, the backup camera and navigation/maps stopped functioning. The vehicle has been unable to complete subsequent software updates since. Tesla service later inspected the vehicle and indicated that the main computer/ECU was stuck in a loop and required replacement. The backup camera and navigation loss occurred immediately following the OTA update and persisted for several months despite multiple service attempts. Due to the vehicle’s rear design and limited rear window visibility, operating the vehicle in reverse without a functioning backup camera significantly impairs visibility. Even when using mirrors or physically turning to look backward, rearward visibility is restricted. As a result, the loss of backup camera functionality presents an ongoing, daily safety hazard during normal vehicle operation.

Low beams are too bright and aimed too high, constantly blinding other drivers. Automatic high beams are always turning on and will not automatically turn off when another vehicle is detected.

1. What component or system failed or malfunctioned, and is it available for inspection upon request? The 12V battery failed unexpectedly, causing a complete shutdown of the vehicle. The car became fully inoperable—doors, windows, touchscreen, and manual override systems were unresponsive. Yes, the vehicle is available for inspection. 2. How was your safety or the safety of others put at risk? My young child was inside the car at the time of the failure. Due to the system lockout, I was unable to open the doors or remove them from the vehicle. Emergency responders were called and had to break windows to safely extract my child. This situation posed a serious risk of heat exposure, panic, and injury. 3. Has the problem been reproduced or confirmed by a dealer or independent service center? The failure has been documented and attributed to a dead 12V battery, though Tesla has not formally inspected the vehicle as of this writing. I am working to have it evaluated by a qualified technician to confirm the cause. 4. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? The vehicle was not inspected by Tesla at the time of the incident. Emergency responders did assess the situation on site. I plan to notify my insurance provider, and will make the vehicle available for inspection. 5. Were there any warning lamps, messages, or other symptoms of the problem prior to the failure, and when did they first appear? No. There were no alerts, notifications, or warning lights indicating the 12V battery was low or nearing failure. The malfunction occurred without warning.

A little background information, on Dec 2023 I installed 4 new Hankook Ion Evo AS (255/45R19) for my Tesla model Y at the Correa Tire shop in Dorado Puerto Rico and the manufacture date on those tires was 4422 and at the time the car had close to 30k miles.  On April 2025 one of the tires broke and I replaced it at the same place with the same tire model.  Less than a month after the new tire was installed, while riding on the highway at close to 65mph the recently replaced tire completely broke off leaving only the sides and the rest of the tire flew off the car (see pictures attached).  This happened suddenly with no previous indication or car notification of any issue with the tire.  Fortunately, I was able to stop the car without losing control and apparently the tire did not hit other oncoming cars.  This was a very scary situation, which could have resulted on a serous and even fatal accident.  When I checked the new tire, or what remained of it, I noticed it had the same manufacturing date (4422) as the tires I had replaced in 2023. The next day I went to the tire shop and explained the incident and they informed I had to buy a new tire while they investigated the situation and if there was any issue with the tire. At that time I also opened a complaint with Hankook US. After waiting various weeks for a response, and expecting reimbursement for the damage tire, I have not received any information from the tire shop and Hankook said they did not receive a claim from the tire shop.

2nd Tesla loaner is damaged by rodents Chew on Car Wires.

Tesla refuses to clear this recall, despite the software having been rolled out via over-the-air updates years ago. I now have to sell my vehicle because I'm unable to import it to Canada.

Steering assistance reduced alert is showing up on vehicle. It is difficult to drive the car. The car has less than 33,000 miles on it.

The contact owns a 2021 Tesla Model Y. The contact stated while attempting to start the vehicle, the message "Front Passenger Safety Restraint System Fault" was displayed on the instrument panel. The local dealer was contacted; however, the vehicle was not diagnosed. The contact was informed that the VIN was not under recall. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 68,400.

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 NHTSA 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 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.

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 vehicle's Autopilot/Full Self-Driving (HW3) computer has failed at approximately 70,000 miles. Tesla Service has diagnosed the vehicle as requiring replacement of the HW3 computer. As a result of this failure, multiple safety related systems are inoperative, including collision avoidance, lane assist, lane departure warning, automatic wipers, and other driver assistance features including adaptive cruise control. The vehicle is also unable to receive over-the-air software updates, including potential safety updates. In addition, the vehicle experiences system lag, including delay when shifting into Drive or Reverse. The center display is slow to respond, and certain media and software features are no longer functional due to inability to update. This condition increases safety risk because active safety systems designed to assist with collision prevention are disabled. The failure appears to be hardware-related and not due to normal wear. Tesla has confirmed the need for computer replacement but has declined coverage as the vehicle is outside warranty. The failed component should be available for inspection upon request.

The windshield will fog up often due to moisture, which is made worse by activating the mechanism the Tesla model Y has for defogging, and rolling the windows down does little. This put my safety at risk when my visibility was compromised by this while driving on the highway, when I had to navigate and pull into the breakdown lane using teslas cameras. There were no warning lights, and this vehicle part has not yet been inspected. Since this issue has happened on residential streets to me before, I was able to avoid a crash, but I had little to no visibility, and it’s only a matter of time until this does result in a crash.

The power steering became reduced and diminished while driving. Tesla is stating that there is corrosion on the wiring harness ports on the power steering rack. There was no warning until after the incident, but now a “reduced power steering” annunciation appears in the screen. The Tesla repair station has confirmed the condition.

Continued failure of the OCS system after repair by tesla. This is the system responsible for determining if a passenger is in the passenger seat and without this is a safety issue. As it could affect airbag deployment.

The contact owns a 2021 Tesla Model Y. The contact stated that while driving at 10 MPH and depressing the brake pedal; however, the vehicle accelerated independently and failed to brake without warning. The contact assured there were no distractions that could have caused the crash. Due to the failure, the contact crashed into another vehicle as the air bags deployed. Despite the air bag deployment, the vehicle continued to accelerate and repeatedly hit the same vehicle. The brake pedal eventually responded after depressing multiple times to the floorboard and the vehicle finally came to a stop. The contact did not sustain any injuries and did not seek medical treatment. The driver of the other vehicle did not report any injuries. A police report was filed. The vehicle was towed from the scene to an independent tow yard. The contact mentioned reviewing the Tesla App on the crash however it was not recorded and there was a recording lag. The manufacturer had yet to be notified of the failure. The vehicle had yet to be repaired. The failure mileage was 39,264

See attached document for complaint.

The heat pump stopped working twice, which requires a trip to the service center and the repair to restore function is a minimum of $3,000. The vehical has no heat at all, no defrost, no cabin heat nothing! This defect happens in the coldest parts of winter and leaves the owner stranded wherever this occurs. The first time was at 52,000 miles. It wouldn't turn on. The heat pump seized. The second time was on a trip, it blow out all the freon and stopped working in Waterloo, Iowa. I was 4 hours from home and it was -4F outside. The car had 136,000 miles. Many others have had heat pumps go out in the same situation...dead of winter. The repair is $3,000 to get heat back into the car. The heat pumpscare clearly defective or not big enough and are destroying themselves every other winter in Minnesota. This is 1. Dangerous because you can't defrost your windshield. 2. You cold freeze to death in very cold conditions. 3. A very expensive repair pn a part that should last mire than a 1 or 2 years. Home heat pumpsvlast 10- 24 years!!

I am writing to formally file a complaint against Tesla Motors regarding a serious safety issue involving defective seat belts in my vehicle. Despite my efforts to address this matter directly with Tesla, their response has been dismissive, prioritizing an out-of-pocket repair fee over a fundamental safety concern. Recently, my [XXX] son discovered that rear driver side seat belt does not latch onto the buckle. When I contacted Tesla to seek assistance in resolving this issue, I was informed I would need to pay out of pocket to replace the buckle because my warranty had expired as of January this year. During the replacement, the Tesla technician pointed out that the other 2 seat belt buckles in the back seat were also defective and would soon not function properly. The Tesla service center in Alhambra, CA was notified but they categorized it as a customer-pay repair. An expired warranty should not absolve Tesla of responsibility for a defect in a critical safety component. Seat belts are essential for driver and passenger protection, and any failure in their function could lead to serious injury or fatality. I am deeply concerned that Tesla does not seem to be taking this issue seriously. Instead of addressing the safety risk posed by the defective seat belts, their response has been to demand payment for a repair that should not be the driver's financial burden. Safety should always be the top priority, and I believe Tesla’s handling of this matter is unacceptable. I urge your office to investigate this issue further to ensure that Tesla is held accountable for addressing potential defects in their seat belts. If Tesla is unwilling to resolve this matter appropriately, I believe regulatory intervention is necessary to protect consumers from similar safety risks. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)