2013 Tesla Model S vehicle speed control problems

“On [XXX], at approximately [XXX], I was driving my 2013 Tesla Model S (VIN: [XXX] ) on [XXX] in Barrow County, Georgia when the instrument cluster/speedometer display went completely blank while driving. This is an intermittent issue that occurs without warning - the display turns off and sometimes freezes. Because the speedometer was not displaying, I had no way to know my actual speed. I was pulled over by Barrow County Sheriff’s Office and cited for speeding. I explained the instrument cluster malfunction to the officer at the scene and showed him the blank display. I took my vehicle to Tesla Service Center in Duluth, GA (3380 Satellite Blvd) on November 4, 2025 - as soon as I could get an appointment after the incident. Tesla cleared the filesystem caches but did NOT inform me about the existing eMMC recall (SB-21-21-001) that affects my vehicle, nor did they perform the recall repair. My 2013 Model S is equipped with the MCU1 with the 8GB eMMC that is subject to NHTSA Recall 21V-119. This is a known defect that NHTSA determined to be a safety issue because it affects critical displays including the speedometer, backup camera, and turn signal indicators. I…”

“The contact owns a 2013 Tesla Model S. The contact stated that while driving 30 MPH and depressing the accelerator pedal, the vehicle failed to respond as needed. The contact stated that the message "Take to Service" was displayed. The local dealer was contacted, and the vehicle was towed to the dealer by Tesla Insurance to be diagnosed. The contact was informed that the drive unit was rusted and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure via email and a letter. The approximate failure mileage was 150,000.”

“Tesla instrument cluster screens are leaking fluid and eventually failing. The instrument cluster is the only place I can see my speed, thus my car is now unsafe as I can not tell what speed I am driving at.”

“While driving on the freeway at 70 MPH with 39 miles of range left, the vehicle abruptly slowed down to 20 MPH...cars behind us almost hit us due to the car slowing down despite me accelerating. We pulled to the right shoulder, rest the car and then was only able to go up to 20MPH...range still said 39 miles. Shortly after the car stopped, there was a warning displayed, and the car turned off and could no longer turn back on. I believe the battery failed. The car was towed to Tesla Irvine Barranca Service center and diagnostics confirmed the battery needed replacement. I traded in the car for a new vehicle. Safety of the driver, passengers, and the around us on the freeway were all at risk and we were lucky to avoid any issues. All Tesla told me was the battery died There was a warning that appeared when the car slowed down to 20mph...stating the car was no longer able to be driven”

“Brake pedal switch is malfunctioning causing the brake lights to turn on by itself when driving 60mph+ when I am pressing only the gas pedal and then it’s causing the engine to shutoff or power reduced due to “both pedals pressed” alert in the system. This can cause an accident 1st for sending the wrong brake light signal for the drivers behind me and 2nd to shut off engine when driving at high speeds. If this happens when driving uphill can cause the car to slow abruptly and even start going backwards due to engine shut off. Also I have concern that I had to reverse press (pull back) the brake pedal with my left foot in the middle of the highway to get rid of the alert while I was pressing the gas pedal with my right foot and then to regain gas power to continue to speed. Again, this is dangerous action that can cause an accident.”

“Screen behind steering wheel that displays Speedometer goes black from time to time. Am told by a Tesla tech that this issue is related to outdated MCU1 hardware and that a 1500 upgrade to MCU2 hardware will resolve the issue. The current software that runs on 9 year old hardware (same chips are used from 2012-early 2018) is too bloated and causes usability issues that create unsafe driving conditions. It is imperative that speed, climate control and other functions that MCU handles have 100% uptime, especially when the vehicle is in motion. This is only possible by a hardware upgrade that can run Tesla’s latest software (which is automatically pushed several times per year). Right now, Tesla will sell customers an upgraded MCU for $1500-2000, depending on vehicle. This MCU can handle the latest software that inevitably finds its way to every Tesla vehicle through automatic updates. Customers should not have to pay $2000 to maintain basic features, such as timely vehicle power up, reliable speedometer and climate controls, and consistently performing music playing. I have had dozens of issues with MCU performance over the 5year ownership period. NHTSA should do…”