Which parts fail
Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2021 Tesla Model S owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2021 Tesla Model S. The contact stated that while the vehicle was parked, the vehicle was connected to the charging port and independently went into Race mode. The contact stated that the charge increased from 0 to 60 instantly. The vehicle was taken to the dealer, where it was diagnosed with a software failure. The vehicle was repaired; however, the failure reoccurred. The contact stated that while the vehicle was charging, the charging stopped intermittently, and the vehicle completely stopped charging. The vehicle was taken back to the dealer, where it was diagnosed with battery corrosion and failure. The contact was informed that the battery contained water and was corroded. The contact questioned whether the vehicle had been in a flood. The contact was informed that the battery needed to be replaced. The vehicle was not repaired. …
This was a Autodrive malfunction event on a brand new Tesla Model S. I was in standstill traffic when my car, which had been engaged in Autodrive, lurched forward and suddenly accelerated at a high rate of speed into the car in front of us, without any driver prompts. The problem was immediately reported to Tesla who has been delaying in providing the data logs and engineering analysis for over two months. Tesla did what they called a "safety inspection" after the crash and says the car is fine. They have refused to try and replicate the malfunction because they maintain the car is fine. Luckily, no one was injured, and there was only property damage to my car and the car in front of me, but there is something wrong with the software, the cameras, and/or the front end sensors and their calibration for the car to have done that.
The contact owns a 2021 Tesla Model S. The contact stated while driving 70-75 MPH with the Autonomous Self-Driving feature activated, the vehicle experienced phantom braking on numerous occasions. The dealer was made aware of the failure and informed the contact that the vehicle performed as designed. The vehicle was not diagnosed nor repaired. The manufacturer was made aware of the failure. The contact related the failure to the Full Self-Driving (FSD) Beta 10.69.2.2 software update. The failure mileage was 17,102.
The contact owns a 2021 Tesla Model S. The contact stated while driving approximately 20 MPH or slower, the pedestrian alert warning system failed to activate as designed. The vehicle was taken to the local dealer to be diagnosed; however, the mechanic found no failure. The contact related the failure to NHTSA Campaign Number: 22V235000 (Electrical System, Forward Collison Avoidance). The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 6,000.
The contact owns a 2021 Tesla Model S. The contact stated that on several occasions while the vehicle was stationary or while driving at various speeds, the instrument cluster screen went blank and was unable to control the vehicle. The contact experienced the failure approximately twenty times. The contact called the local dealer and made them aware of the failure. The vehicle was not diagnosed nor repaired. The manufacturer had been informed of the failure. The failure mileage was approximately 45.
The contact owns a 2021 Tesla Model S. The contact stated that while driving at an undisclosed speed, the driver's side indicator was inoperable on the yoke steering wheel. The contact stated that the failure had occurred several times. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was approximately 24,500.
The contact owns a 2021 Tesla Model S. The contact stated while driving 72 MPH with the autonomous self-driving feature activated, the vehicle experienced phantom braking. The vehicle was not diagnosed nor repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was 56,292.
My car has a yoke steering wheel that feels unsafe and should be illegal along with the touch turn signals and horn. I almost crashed today when I had to swerve to avoid a mother crossing the road with her child. I tapped on the honk, but unfortunately, it's not in the middle of the steering wheel as one one would expect, but it's a small touch button right next to the cruise control touch button. each time i need to engage it, I have to take my arms off the road and find this button. It's very distracting, especially in emergency situations. The turn signals are also touch only and there's no way to really know if you have them or not. When turning in a roundabout, the yoke steering wheel is almost upside down and trying to signal is nearly impossible. …
While driving with a fully charged battery, the car dash warned "pull over to safe location. Battery cannot support all functions". We were unable to fully pull over in the time before the car experienced a critical loss of functionality, as the car shut off in less than 1 minute from flashing the warning. The car lost all functionality, including loss of its flashers, putting us at significant risk since we were unable to alert other motorists to our presence on the side of the road as it was getting dark. The car is currently with the dealer and thus far they have been unable to identify the root cause of the issue but have acknowledged the existence of the problem. They've claimed the 12v battery died and the car does not have any safety redundancy built in to be able to access power from the main driving battery to power critical features such as the hazard lights. …
There have been 4 instances of the instrument cluster screen and main information touch screen shutting down while driving the vehicle. First 2 episodes were in Aug of 2021 then twice in Oct of 2021. Episodes were separated by 1-2 weeks. Both screens are blank for approx 20-40 seconds. Subsequently no information such as speed, brake light indicators, radar/hazards, turn signals or any other information is displayed or can be used. Unknown if the turns signals or brake lights work when this happens as there is no way to see them on the blank screen. No clicking sound for the turns signal is audible either. Car continues to operate otherwise. Both screens then come back on without intervention and all functions return to normal. I have spoken with Tesla service and they state they are aware of this problem but they don't have a fix. …
Related recalls
Electrical system › Instrument cluster/panel
Tesla, Inc. (Tesla) is recalling certain 2012-2023 Model S, 2016-2024 Model X, 2017-2023 Model 3, 2019-2024 Model Y, and 2024 Cybertruck vehicles. An incorrect font size is displayed on the instrument panel for the Brake, Park, and Antilock Brake System (ABS) warning lights.
Remedy: Tesla began releasing an over-the-air (OTA) software update, free of charge. Owners may contact Tesla customer service at 1-877-798-3752. Tesla's number for this recall is SB-24-00-003.
Electrical system › ADAS › Driver monitoring › Software
Tesla, Inc. (Tesla) is recalling 2012-2023 Model S, 2016-2023 Model X, 2017-2023 Model 3, and 2020-2023 Model Y vehicles equipped with all versions of Autosteer leading up to the version(s) that contains the recall remedy.
Remedy: Tesla will release an over-the-air (OTA) software update, free of charge. Owner notification letters were mailed February 10, 2024. Owners may contact Tesla customer service at 1-877-798-3752.
Electrical system › Software
Tesla, Inc. (Tesla) is recalling certain 2020-2022 Model Y, Model X, Model S, and 2017-2022 Model 3 vehicles. The Boombox function allows sounds to be played through an external speaker while the vehicle is in motion, which may obscure the Pedestrian Warning System (PWS) sounds.
Remedy: Tesla will perform an over-the-air (OTA) software update that will disable the Boombox functionality when the vehicle is in Drive, Neutral and Reverse modes, including Summon and Smart Summon, free of charge.
Electrical system › Software
Tesla, Inc. (Tesla) is recalling certain 2021-2022 Model 3, Model S, Model X, and 2020-2022 Model Y vehicles. A software error may cause a valve in the heat pump to open unintentionally and trap the refrigerant inside the evaporator, resulting in decreased defrosting performance.
Remedy: Tesla will perform an over-the-air (OTA) software update, free of charge. Owner notification letters were mailed April 1, 2022. Owners may contact Tesla customer service at 1-877-798-3752.
NHTSA investigations
Recall 23V838 Remedy Effectiveness
The Office of Defects Investigation (ODI) is opening a Recall Query to assess the remedy adequacy of Recall 23V838. On December 12, 2023, Tesla filed a Defect Information Report (Recall 23V838) applicable to all Tesla models produced and equipped with any version of its Autopilot system, which Tesla described as an SAE Level 2 (L2) Advanced Driver Assistance System (ADAS).
Traffic safety violations while Full Self Driving ("FSD") is engaged
The Office of Defects Investigation ("ODI") is opening this Preliminary Evaluation (PE) to assess the scope, frequency, and potential safety consequences of FSD executing driving maneuvers that constitute tra c safety violations. This investigation concerns versions of FSD that Tesla has labeled as "FSD (Supervised)" and "FSD (Beta)." Tesla characterizes FSD as an SAE Level 2 partial automation system requiring a…
Actually Smart Summon sessions resulting in low-speed impacts.
On January 6, 2025, the Office of Defects Investigations (ODI) opened Preliminary Evaluation 24003 (PE24033) to investigate Actually Smart Summon (Summon) sessions resulting in crashes during active sessions. According to Tesla, Summon is a short-distance SAE Level 2 system, controlled by the user from a cell phone within a certain distance and intended for use in parking lots and on private property.
FSD Collisions in Reduced Roadway Visibility Conditions
On October 17, 2024, NHTSA's Office of Defects Investigation (ODI) opened a Preliminary Evaluation (PE24031) of Tesla's Full Self Driving Beta and Full Self Driving (Supervised) (collectively, FSD) to assess: the ability of the FSD system to detect and respond appropriately to reduced roadway visibility conditions; whether any other FSD crashes had occurred under degraded roadway visibility conditions that are…
Autopilot & First Responder Scenes
On August 13, 2021, NHTSA?s Office of Defects Investigation (ODI) opened a Preliminary Evaluation (PE21-020) to assess the performance of Tesla?s Autopilot system (a system characterized by Tesla as an SAE Level 2 driving automation system designed to support and assist the driver in performing the driving task) available in Tesla vehicles.
FSD Collisions in Reduced Roadway Visibility Conditions
The Office of Defects Investigation (ODI) is opening this Engineering Analysis to evaluate Tesla's Full Self Driving Beta and Full Self Driving (Supervised) (collectively, FSD) degradation detection system. The focus of this investigation will be to assess the system's ability, when encountering reduced roadway visibility conditions, to detect degradation and alert the driver with sufficient time to respond.
Autopilot System Driver Controls
The Office of Defects Investigation (ODI) upgraded PE21020 to EA22002 on June 8, 2022, to extend work and deepen the PE21020 crash analysis, to supplement that analysis with additional data, and to perform vehicle evaluations to understand how Tesla's Autopilot system may exacerbate human factors or behavioral safety risks by undermining the effectiveness of the driver's supervision.
Pedestrian alert sounds
NHTSA received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at NHTSA.gov under ODI Number 11486072. FMVSS 141 establishes performance requirements for pedestrian alert sounds for motor vehicles.
Compliance with Standing General Order 2021-01 Reporting Requirements
The Office of Defects Investigation ("ODI") has identified numerous incident reports submitted by Tesla, Inc. ("Tesla") in response to Standing General Order 2021-01 (the "SGO"), in which the reported crashes occurred several months or more before the dates of the reports.
Electrical complaints in other Model S years
Frequently asked questions
How common are electrical problems on the 2021 Tesla Model S?
NHTSA has 25 complaints about the electrical system of the 2021 Tesla Model S, 14% of the model year's 179 complaints. The component named most often is adas › autonomous/self driving (2 mentions).
Is there a recall for 2021 Tesla Model S electrical problems?
Yes — NHTSA recall 24V-051 (instrument cluster/panel, Jan 30, 2024); NHTSA recall 23V-838 (software, Dec 12, 2023); NHTSA recall 22V-235 (software, Apr 12, 2022). Recall repairs are free at authorized dealers.
At what mileage do 2021 Tesla Model S electrical problems start?
Half of the complaints with a recorded mileage happened before about 6,000 miles, and 86% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 0 fires and 0 injuries to electrical system problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.