Tesla Model S collision warning problems

Filed Mar 3, 2026 · Driver assistance · SD

multitude of electrical problems: Fuel/Propulsion System, Lighting, and body controls along with all ADAS: Adaptive Cruise Control, Automatic Emergency Braking, Blind Spot Warning, Forward Collision Warning, Lane Departure Warning, Lane Keeping Assistance systems are impacted by random intermittent glitching as computer screen bubbling progressed with goo leaking out of the bottom of the main computer. Most recent symptom was disabling of ALL ADAS systems along with automatic high beam headlight switching. Long ago as screen began to bubble and express fluid the low windshield washer alert came on and remains even when the tank is full. Then the charge port responsiveness degraded and stopped automatically functioning requiring user to bypass by clicking the "open charge port", then waiting 3 seconds, then tapping "unlock charge port". User must perform this as remote manual operation from a NACS charging handle button push will FAIL. Long ago the computer controlled 'home link' module would have excessive time delays on the order of hours or days from when the user would program and or operate the function. I even had a "phanthom" car appear by the computer calculations with E-Braking before the ADAS system failed fully, a 1.0 Tesla system should not have that... Windows have randomly rolled down and the driver side rear door will unlock and open on its own as the door handles present themselves. The safety risk class is unknown unknown; if the root problem is the screen filling leaking on electronics any number of unknown, unplanned, unstudied risk failure modes exist that can not be predicted. Schematically the HOMELINK is on connector X429 sharing CANBUS connections impacting safety: Driver "Instrument Cluster", DAS systems connected to "Power Steering ECU", "iBooster ECU", "ABS / Stability ECU", "Passive Restraints Controller"... see CAN Network - Chassis drawing page 11 , "Energy System - Charger Logic Connections" "Instrument Cluster / LIN" pg35

Filed Jan 14, 2026 · Driver assistance · VA

Recently right side blind spot monitor camera stopped working. As result, majority of safety features in vehicle has been disabled to include forward collision warning, adaptive cruise control, and many other safety features of the vehicle.

Filed Sep 22, 2025 · Driver assistance · 66,573 miles · CA

The contact owns a 2017 Tesla Model S. The contact stated that while driving at an undisclosed speed, the Forward Collision Avoidance system became inoperable. There was no warning light illuminated. The contact stated that the Forward Collision Avoidance feature failed to activate, almost resulting in a crash with another vehicle. Additionally, the contact stated that the back over collision avoidance system was inoperable. The vehicle was taken to the dealer, where it was determined that the front radar and bracket had failed and needed to be replaced. The vehicle was not repaired. The contact expressed a concern that the failure posed a significant safety hazard, as the Forward Collision Avoidance was inoperable. The manufacturer was not made aware of the failure. The approximate failure mileage was 66,573.

Filed Sep 15, 2025 · Driver assistance · MD

Without prior incident or warning all ADAS systems stopped working, including adaptive cruise control, AP, FSD, automatic emergency breaking, blind spot warning, forward collision warning, lane departure warning, lane keeping assistance, parking collision warning. There were no alerts displayed on either driver’s display (other than ‘park assist unavailable’). Also there was no visualization of surrounding traffic, roads etc that is normally visible. The cameras were clean. Rebooting the MCU did not resolve the issues.

Filed Aug 24, 2025 · Electrical, Lights · NJ

Tesla originally confirmed issues with the MCU1 system in my vehicle and upgraded it to MCU2. I Paid $1,599 for the repair/upgrade. Since then, the center screen has continued shutting off while driving. When this happens, the instrument cluster and controls go dark, I cannot see my speed, use the blinkers to signal, operate the AC/defroster, or access other critical vehicle functions. This has occurred multiple times on highways, including US-22 in New Jersey, which created serious danger because I could not monitor speed or signal properly. Although Tesla addressed the MCU1 problem by upgrading me to MCU2, they told me afterward the vehicle was still “safe to drive,” despite the failures continuing. I believe this is unsafe because I lose visibility of all driving information and access to basic controls. Tesla now refuses to repair these ongoing problems. After I raised complaints about the severity of the issue, I was dismissed and mocked for my speech disability during phone calls, and Tesla placed me on a service restriction. As a result, I am unable to obtain further repairs for this safety defect. I am afraid to drive the car. No Adaptive Cruise Control, Automatic Emergency Braking, Blind Spot Warning, Forward Collision Warning, Lane Departure Warning, Lane Keeping Assistance, Parking Collision Warning, or Rear Cross Traffic Warning features were involved in this failure.

Filed Aug 19, 2025 · Driver assistance · 16,000 miles · WA

The contact owns a 2023 Tesla Model S. The contact stated that while attempting to reverse the vehicle, the Collision Avoidance Assist system failed to operate as designed while reversing from the garage. A dealer was contacted. The vehicle was not diagnosed or repaired by a dealer or independent mechanic. The manufacturer was notified of the failure and stated that a representative would be sent to the residence to inspect the vehicle. The failure mileage was 16,000.

Filed May 13, 2025 · Driver assistance · 50,320 miles · PA

The contact owns a 2022 Tesla Model S. The contact stated while driving 35 MPH in inclement weather with no other vehicles nearby, the vehicle came to an abrupt stop. The contact stated that the brakes were applied without driver input. The contact stated that the emergency stop message was displayed during the failure. The contact stated that on another occasion, while driving 45 MPH, the vehicle suddenly stopped. The contact had since stopped using the Forward Collision Avoidance: Adaptive Cruise Control. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 50,320.

Filed Feb 23, 2025 · Driver assistance · SC

In July 2024 all the cameras on the Tesla Model S except the rear stopped working after a failed software update. This meant that all of the driver assistance systems as well as GPS, adaptive cruise control, blind spot monitoring, lane departure warning, forward collision warning etc stopped working. The lack of availability of this system meant that the car no longer had any advanced safety features that came with the car. It took many months for Tesla service to diagnose and fix the problem, which they identified as a failure of the Auto Pilot computer. After I was finally able to get an appointment with the Service center, they replaced the Autopilot computer at a cost of over $1500. The failure first appeared in July 2024. The symptom was GPS location being stuck and Autopilot and all safety features being not available.

Filed Nov 7, 2024 · Driver assistance · NY · crash

The car veered suddenly to the left (out of the left lane of a highway) while supervised in auto steer. The driver could not move the steering wheel to avoid a collision with the guardrail as the steering wheel had locked up. The collision warning didn’t sound and emergency brakes did not activate upon impact. The airbags were deployed and the car was totaled.

Filed Jun 14, 2024 · Brakes, Driver assistance · 95,143 miles · FL

The contact owns a 2013 Tesla Model S. The contact stated while driving 57 MPH, the Forward Collision Avoidance: Automatic Emergency Braking was inadvertently activated. The emergency brake fault and parking brake fault warning lights illuminated. The vehicle was steered to the side of the road and inspected. The vehicle was towed to an independent mechanic where it was diagnosed that unknown parts needed to be replaced. The manufacturer was notified of the failure. The failure mileage was 95,143.