Tesla Model S abs comes on

Filed Oct 25, 2026 · Brakes, Driver assistance · CA

While driving at freeway speed at about 9:15 PM with Full Self-Driving (Supervised) engaged, the car suddenly jerked and told me to take over. Several safety systems then failed at once: ABS disabled (ESP_a025), stability control disabled (DI_a222), traction control disabled (DI_a223), Automatic Emergency Braking unavailable (APP_w009), Vehicle Hold disabled (DI_a245, DI_a246), steering assist reduced (UI_a020), and lane departure avoidance unavailable (APP_w264). Steering became very heavy and regenerative braking stopped, so the car coasted freely and would only slow with the brake pedal. I exited the freeway and drove slowly home. The alerts stayed active after a reboot. The car was towed to the Tesla service center under warranty and is available for inspection. There were no warning signs before the failure. No crash or injury. This is the second event like this. In April 2026 the car showed safety fault alerts and, with automatic braking disabled, rolled forward twice at a red light. Tesla service reviewed the logs, called it a false sensor reading, and made no repair. A service advisor later acknowledged in writing that these were intermittent problems. My children ride in this car regularly. I no longer consider it safe to drive.

Filed Sep 9, 2026 · Brakes, Suspension · TX

Catastrophic structural failure of the rear driver-side (LH) brake caliper assembly on a 2023 Tesla Model S Plaid at approximately 18,036 miles. While driving normally on a public roadway, the factory-installed rear LH brake caliper bolts backed out completely due to improper assembly torque or a latent material defect. The unbolted caliper detached entirely from its mounting bracket and collapsed into the spinning wheel barrel. The caliper became violently wedged between the wheel rim and the rotor, instantly puncturing the wheel, flattening the driver-side rear tire, damaging the passenger-side (RH) rear tire, and causing an immediate loss of vehicle control. The loose caliper acted as an unconstrained projectile inside the wheel assembly, severing the hydraulic brake line, shredding the electronic parking brake harness, destroying the suspension links (rear lower fore/aft links), and destroying the ABS sensor/module. This failure created an extreme, life-threatening hazard of a sudden high-speed wheel lockup and total brake system failure. An independent Pre-Purchase Inspection (PPI) was completed just 263 miles prior to this incident. The certified inspector completed an 85-mile test drive and verified the braking and suspension systems were operating in normal factory condition with zero abnormal vibrations or loose hardware. This establishes the failure as a sudden, latent assembly torque failure of factory hardware during normal operational stress. The manufacturer's authorized service center confirmed via technician notes that the caliper came entirely loose and lodged into the wheel. Despite this being a severe assembly workmanship failure within the active factory warranty window, the manufacturer is refusing to cover the repair, alleging third-party tampering without physical or forensic proof. The failed hardware is being retained for forensic inspection.

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 Dec 11, 2025 · Airbags, Brakes · CA

My 2018 Tesla Model S has a recurring safety-critical defect involving the steering system and the Chassis CAN communication network. On October 20, 2025, the vehicle had to be towed to a Tesla Service Center because it would not power on and displayed multiple safety alerts (traction control disabled, stability control disabled, ABS disabled, and reduced steering assist). Tesla documented that the steering rack was “bringing down the Chassis CAN” and stated the issue might require a new steering rack and coolant pump if it returned. The warnings have now returned, and the vehicle is again showing active alerts for disabled traction control, disabled stability control, and previously reduced steering assist. This is a repeat of the same unsafe condition that Tesla attempted to repair. The car is unsafe to drive and could cause loss of steering control. This is a recurring steering/Chassis CAN failure with major safety system disablement. I am reporting this because the defect affects vehicle control and increases the risk of a crash.

Filed Feb 21, 2023 · IN

I had the eMMC replaced under recall in December of 2021. The board failed again in December of 2022 resulting in all controls of the car being inaccessible, the center screen was black. I had no control of lights or HVAC and all the traction control, ABS, and emergency avoidance features were not working. Tesla told me there was no fix except to upgrade to the MCU2 computer which cost me $1,872. This was related to the original recall that didn't really fix the problem. The MCU just went dead, no waring.

Filed Feb 13, 2023 · Brakes · FL

Im having total braking loss around freezing temps The issue occurs around freezing temps, after a car wash or if the roads are wet after driving on the highway for 20-30min without using the brakes. (Using one pedal driving) Last year I had the same issue and Tesla’s position was something to do with detergent in the car washes I use. Now they’re saying it’s because I put the “wrong” size rear tires on the car. They were sold to me and installed by Tesla as the factory recommended winter tires and rim package. They’re saying that the abs sensor is detecting the error and automatically applying ABS brakes because of the mismatch tire size. However, the issue is not an intermittent braking loss, it’s a complete braking loss. I’m also seeing abnormal front rotor wear. Tesla said this was an issue that was occurring on some other vehicles and they had a high level engineering team trying to figure it out. At the time mine was one of the first P2 refresh vehicles in Canada so I was guessing there weren’t that many being used in below freezing temps since they weren’t exporting to Europe at the time.

Filed Dec 16, 2022 · Brakes · CA

I was travelling on the highway at high speeds when the traffic suddenly comes to a halt. My tires were screeching without any signs of ABS kicking in whatsoever. My car slid 20-30 feet since i braked.

Filed Feb 16, 2022 · Brakes, Driver assistance · GA

Wheel speed sensor kept getting disconnected. When it does, systems like ABS, traction control, and other anti-collisions systems are disabled immediately. This resulted in lost of vehicle control on wet pavement. The service center replaced the sensor twice but the problem continues to pop up randomly. They won’t look at the issue unless I pay for troubleshooting at $150/hr with no limit of how long or if they will find something.

Filed Feb 8, 2022 · Driver assistance, Lights · AZ · crash

System Failure: Adaptive speed control Safety Risk: My 2015 Tesla Model S, at highway speeds, smashed into the rear of a jacked up Ford F250 Pickup. A Head on collision at highway speeds put my wife (and dog) and I at great risk. Has the problem been reproduced or confirmed by a dealer or independent service center? I am unsure if or how Tesla is dealing with the problem of adaptable speed control failure. Has the vehicle been inspected? Yes. Dan's Paint & Autobody and USAA Insurance Company adjuster My accident happened in the southbound passing lane at mile marker 178 on I-10, south of chandler on the Gila River Community in Maricopa/Pinal County It was dark outside with heavy traffic in both southbound lanes. My software version was 2021.40.6 I had the distance between cars at the closest setting , and had the adaptive speed control set at ~75. I was attentive with both hands on the wheel, eyes forward watching traffic with my wife whom was also watching the traffic. Without warning a Ford F250 stopped hard in front of me and my adaptive speed control did not react. The few beats I gave the adaptive speed control to respond first cost me precious braking time. I did hit my abs brakes and could feel the vibration as they attempted to slow down, but it was too late. I submarined under the bumper of the truck at a very high speed. There was no warning lamps, messages at the time of the accident. There was one early symptom that I recall. There was a Tesla software update a few days before the collision. On 11/27/22 before leaving for my trip, the dash screen to the far left did not display the map which it usually does when you set the GPS to map the path. I rebooted with the steering wheel toggles, and the display returned to normal. There were no other software malfunctions that I recall prior to the adaptive speed control failure.

Filed Apr 29, 2021 · Steering, Suspension · 30,000 miles · CA

Please note: the VIN of the actual car that is the subject of this complaint is unavailable therefore I have used the VIN of another tesla of the same year and model in order to be able to make this submission. This complaint is about suspension failures in teslas. Here is a tesla in a salvage auction in england. Https://www.copart.co.uk/lot/37735131/clean-title-2015-tesl-model-s-p8-wolverhampton the only damage to the car is that the front wheel and suspension has been wrenched off. No air-bags have deployed and there is no impact damage anywhere on the bodywork. Photographs attached with this submission show the broken suspension and detached wheel. I believe that the cause of so many teslas having wrenched off wheels is very simple. Circumstances can occur in which full braking is applied to a wheel but the motor is still at full power. The electronics are not infallible. Glitches can occur. Even if power to the motor is shut down there is still massive stored energy in the rotor of the high RPM electric motor which acts as a massive flywheel. The suspension linkages are not strong enough to withstand the torque which is then applied. It is even worse if the ABS or traction control pulses the brakes because this then gives a hammer blow effect. This failure can affect either the front wheels or the rear wheels. There have been many similar cases of torn-off wheels. You can see examples here https://www.flickr.com/photos/136377865@n05/albums/72157719033036968 please take action. It is obvious that tesla is refusing to remedy the situation.