2017 Tesla Model S Owner Complaints

2017 Tesla Model S P100D. Vehicle received a paid MCU2 infotainment upgrade (MCU1 to MCU2), which replaced both the center touchscreen computer and the instrument cluster. The original MCU1 architecture used an independent computer for the instrument cluster, providing redundancy. The MCU2 retrofit consolidated both displays onto a single processor with no fallback mode. The first MCU2 replacement unit experienced a touchscreen digitizer failure — touch input stopped responding but the displays remained powered and the instrument cluster continued to function. Tesla replaced it with a second MCU2 unit. The second MCU2 unit has experienced three complete blackout events where both the center display and the instrument cluster simultaneously lose all power — no backlight, no image, no data. One of these events occurred while driving at speed on the road. I lost all instrumentation: speedometer, gear indicator, turn signal feedback, warning lamps, backup camera, and climate controls. I had to pull over with no way to confirm my speed or signal to other drivers. The vehicle remained mechanically drivable — steering, brakes, and motor continued to function. During the recent blackout a few days back, the vehicle had been stored in a closed garage and was not heat-soaked. I have video evidence of the car with both screens completely dead while the vehicle is in gear and moving. A scroll-wheel reboot restored the screens each time. This is my fourth service visit to Tesla for this upgrade. The MCU2 architecture provides no independent fallback display for critical safety information such as speed, gear state, or warning indicators during a processor crash. The prior MCU1 system maintained instrument cluster functionality independently of the infotainment computer.

NHTSA ID

11755807

Incident

Aug 8, 2026

My Tesla wouldn’t charge at Level 3, 2, or 1 charger resulting in the need for the tow and further service hours. Following the service I was told it was a software issue and that a power cycle resolved the issue which locked out the charging. It’s deeply concerning and baffling that this could happen at anytime resulting in days or weeks or down time for what is ultimately a software issue. This is my fourth hardware related software issue following a Tesla update.

NHTSA ID

11752080

Incident

Jul 9, 2026

Trunk latch fails, trunk latch safety mechanism also failed so manual release does not work. This is a safety issue

NHTSA ID

11745960

Incident

Jun 23, 2026

This happens about 30%to 40% of the time when using Full Self Driving Supervised on HW3, FSD version 12.6.4, software version 2026.14.6. When changing marked lanes to the right, either initiated by FSD or the driver asking FSD to move to the right by engaging the right turn signals, it will do one of 2 things: 1. Change lanes properly about 70% of the time 2. Start and abort the lane. Hange swerving back and forth between the 2 lanes, ot 3. Does nothing and drives straight without changing lanes, all the while with the turn signals on. #2 is particularly dangerous.

NHTSA ID

11744026

Incident

Jun 14, 2026

Using FSD. Stopped at a stop sign making a UPL into a 4-lane 35 MPH posted street. TWICE now there was a small opening which would require an aggressive accelerator - it started the turn stopping a full car length into the first lane and decides it's going to wait for closing traffic from the right. Obviously stopping in the middle of new oncoming traffic from the left is not very wise. This has happened 3 times with 2026.8.3 and I've never seen it before - twice i gunned it to force the short turn but missed it once. Definitely a pucker maneuver.

NHTSA ID

11733796

Incident

Apr 25, 2026

Here’s a clear, professional paragraph you can use for your NHTSA report: ⸻ While using Tesla’s Auto Summon feature in a controlled parking environment, my vehicle (2017 Tesla Model S) made unintended contact with a stationary garage pillar. At the time, I was actively supervising the vehicle as required, and it was operating at low speed. The vehicle appeared to misjudge clearance while maneuvering, resulting in a sideswipe to the front passenger side and damage to the side mirror. This incident posed a safety risk as the vehicle’s automated steering did not maintain adequate distance from a fixed object, which could present greater danger in tighter environments or near pedestrians. There were no warning lamps, alerts, or abnormal sounds prior to the incident to indicate an imminent issue. No emergency crews responded, and there were no injuries. The collision involved only a stationary object (garage pillar).

NHTSA ID

11729097

Incident

Jan 30, 2026

The charge port latch failed to release the mobile connector (consistent with TSB SB-18-44-002) I had to call Tesla customer service for manual release instructions, which was very difficult to get through to (unclear through the Tesla App) After manual release, the mobile connector was damaged since it got stuck during a rainstorm. Tesla replaced the entire charging port for ~$1,000 without first testing the mobile connector Though a known defect, TSB SB-18-44-002 was never applied to my vehicle and since my vehicle was out of warranty, I was charge for the full replacement of the charging port. I was put at risk because I was stranded with a charging port cable unable to release from my vehicle and unable to drive.

NHTSA ID

11723641

Incident

Mar 3, 2026

I am reporting a serious safety defect regarding the front control arms on my 2017 Tesla Model S (VIN: [XXX] ). The front control arm bushings are failing, with visible cracking and tearing, as documented by a certified mechanic. These failures directly compromise vehicle steering, handling, and safety, creating a high risk of loss of control or accident. Tesla has issued a known service bulletin related to this issue, yet refused to perform repairs free of charge, despite acknowledging the bulletin exists. Timeline of Communications and Attempts to Resolve: Dec 2015 – First reported issue to Tesla Service Center. Inspection was refused without a payment of $270. Tesla claimed the vehicle was out of warranty and refused free inspection or repair. Independent Mechanic Inspection – Confirmed front control arm bushings are cracked/ripped; photos were taken. Dec 27, 2025 – Email sent to [XXX] . Received a call from a local Tesla center stating nothing could be done because the car was out of warranty. I explained it is a safety issue, but it was disregarded. Jan 10 and Jan 18, 2026 – Follow-up emails sent to [XXX] , but no response was received. Jan 23, 2026 – Email sent to [XXX] , documenting safety concerns and service bulletin reference; no acknowledgment or response was received. I and Tesla have all the emails amd photos but unfortunately I was nit able to attach. If requested I can email or fi d out ways to shareholders. Please let me know. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11718165

Incident

Dec 1, 2025

I pulled into a parking lot, and noticed that my passenger side rear wheel was leaning into the car. Luckily I was next to a Firestone and the mechanic told me the rear control arm broke off. Had I have been driving even for 2 more minutes, the wheel would have came off completely. When I pulled in, there was no noise, vibration, or any other indication that something was wrong. I know for a fact I didnt hit any curbs or large potholes. It was a normal drive.

NHTSA ID

11714816

Incident

Feb 1, 2026

CRITICAL SAFETY FAILURE: Loss of Driver Override and Extreme HMI/Signaling Latency. 1. Loss of Override & Unintended Acceleration: While operating FSD (Supervised), the vehicle ignored a 65 mph set-point and accelerated to 80 mph. I attempted to reduce speed by pulling down on the steering stalk 4-5 times, but the vehicle ignored all manual inputs, requiring a hard disengagement. 2. Lane Departure / Path Failure: The vehicle failed to maintain lane centering, specifically crossing over the centerline into opposing traffic. This occured without warning or system-initiated steering alerts 3. False Signaling / Path Failure: I’ve seen at least two occurrences where system exhibits dangerous signaling conflicts, such as activating a right-turn signal while simultaneously executing a left-turn maneuver. One time it was on a 45–55 mph rural corridor where trailing drivers frequently overtake slower vehicles. A false right-turn signal acts as a dangerous "all-clear" for a trailing driver to pass on the left, creating a high- probability broadside collision scenario when the Tesla physically executes its left turn. I have no idea if this has occurred more than these two times as I don’t check this. The other time I caught on video, by chance, as I was trying to capture the surging behavior to show the Tesla service center 4. Audio & Visual HMI Latency: Audible instructions arrive 100+ feet after turns, and the map UI auto-zooms away from the driver’s focus, requiring constant manual screen contact to view street names. This forces significant Visual-Manual Distraction. 5. Confirmed Inadequacy: Tesla Service Invoice #[XXX] (Jan 27, 2025) documents: 'The current computer is a little too slow for full self driving function...' confirming the hardware is unfit for safety-critical processing. This incident is directly relevant to NHTSA Investigation PE25012. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11710572

Incident

Dec 3, 2025

The contact owned a 2017 Tesla Model S. The contact stated that while starting the vehicle, an Autopilot disabled warning message system was displayed a day prior. The contact reached out to the Tesla hotline for assistance regarding the failure. The contact was advised to continue driving the vehicle, and the system error message was expected to clear. The contact stated that after multiple drives, the warning message did not disappear. The contact stated that while coming to a stop, the brake system became inoperable. The contact stated that the vehicle then accelerated to approximately 35 MPH, causing the contact to rear-end another vehicle. Multiple warning messages were displayed, including: traction and stability control disabled, automatic emergency braking system fault, battery management system critical fault, and electrical system reduced, as reported through Tesla chat assistance. The contact also stated that all air bags deployed. No injuries were sustained, and no medical attention was provided. A police report was filed. The vehicle was towed and deemed a total loss. The dealer was contacted; however, the vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 98,787.

NHTSA ID

11703016

Incident

Dec 4, 2025

Mileage

98,787 mi

This is a supplemental filing to my prior NHTSA complaint (#11697718) regarding a high-voltage isolation fault and shutdown risk. The vehicle displayed warnings including “vehicle may shut down during driving,” “may not charge,” and repeated BMS isolation fault messages. It became inoperable at a public charging station. The manufacturer confirmed isolation faults in the drive unit and the A/C compressor. Their own service notes stated that the vehicle “may shut down during regular driving” and that charging “may not be safe.” Despite this, the vehicle was left at 0% state of charge for an extended period and then charged by the manufacturer. They later stated to a regulator that the vehicle was “trickle charged at 1 amp for 6 hours,” but the vehicle’s range increased by approximately 100 miles, which is not physically possible at that charging current (1 amp at 240V for 6 hours = 1.44 kWh ≈ 4–5 miles). This discrepancy suggests the vehicle may have been charged at a higher rate than claimed and without proper cooling, despite the documented A/C failure that is necessary for battery thermal management. Battery condition is unknown because the manufacturer refused to perform or provide a battery health analysis, isolation resistance values, thermal logs, or charging session data. The safety defect could not be verified as repaired. While this safety issue remained unresolved, the manufacturer rejected a Tesla roadside tow arranged under regulator instruction to second service center and instead arranged an unauthorized tow to remove the vehicle from their facility without my consent. The vehicle was taken to a non-manufacturer storage lot while still in an unsafe state. I am concerned about: • high-voltage isolation faults, • shutdown risk during driving, • unsafe charging performed by the manufacturer, • possible battery damage from low SOC and charging without A/C cooling, and • mishandling of an active safety defect. The vehicle is available for inspection.

NHTSA ID

11701872

Incident

Nov 26, 2025

I am reporting multiple safety-related defects on my 2017 Tesla Model S (VIN [XXX] ) that were present at the time of purchase but not disclosed by the selling dealer (Starling Ford, Titusville, FL). A certified independent EV repair facility (The Electrified Garage) inspected the vehicle on 11/17/2025 and documented the following safety defects: • failing/worn suspension components (control arms, thrust arms, cracked bushings) • torn sway-bar link boots • inoperative right-rear window regulator • driver window contacting internal wiring harness • moisture in the rear inner tail lamp • previous A/C drain blockage causing interior water intrusion These issues pose risks related to steering stability, electrical safety, visibility, and structural integrity. All of these conditions existed prior to the sale and were not disclosed. I am requesting NHTSA to log this complaint for federal safety review as these defects involve suspension, electrical moisture intrusion, and visibility issues that may impact the safe operation of the vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11701035

Incident

Nov 14, 2025

Upon purchasing the vehicle, I discovered multiple critical safety defects that were not disclosed at the time of sale and were confirmed by an independent EV specialist (Electrified Garage). These defects include worn and failing front and rear suspension components (control arms, thrust arms, and cracked/damaged bushings), a failing sway bar link boot, and a malfunctioning window that makes contact with the internal wiring harness. The suspension defects create instability over bumps and uneven roads, producing clunks, shifting, and vibration that affect steering control and overall stability. These issues present a risk of suspension failure while driving, which could cause loss of control. The window/wiring contact also poses a potential electrical hazard if the harness becomes damaged. The independent inspection documented that these defects existed before I took possession of the vehicle. The dealer did not disclose any of these issues, and the defects were not visible during a standard test drive. I am reporting this because the suspension defects directly affect vehicle handling, safety, and crash-avoidance capability. I want NHTSA to be aware in case similar defects appear in other vehicles of the same model/year.

NHTSA ID

11701014

Incident

Nov 14, 2025

This is an update to NHTSA Complaint #XXX with new safety information. My 2017 Tesla Model S (VIN [XXX] ) has a confirmed high-voltage isolation fault. Tesla replaced the rear drive unit under warranty, but Tesla’s own technician notes now state: “There is a risk of isolation alerts reoccurring during regular driving, use of HVAC system, or DC charging.” “Vehicle may power off due to isolation faults when the air conditioning is used.” This is Tesla acknowledging in writing that the vehicle may shut off during normal driving, even after repair. This presents a serious crash risk. The original failure occurred during Supercharging, with warnings including: • “Electrical system power reduced — vehicle may shut down unexpectedly” • “Vehicle may not restart” • “Air conditioning reduced — DC charging reduced” Tesla reproduced the isolation fault during diagnosis. Even after replacing the rear drive unit, Tesla documented that the isolation defect still exists and prevents a battery health check or DC fast-charge validation. Tesla has attempted to return the vehicle to me in this unsafe condition, while admitting the defect persists. They also stated they may charge storage fees or tow the vehicle, despite the unresolved safety issue. The defect affects the HV bus and can cause loss of propulsion, shutdown during driving, and charging failure. Tesla has not provided numeric test results (megohm isolation readings, insulation tests, or validation data) proving the vehicle is safe. This is an ongoing, manufacturer-confirmed HV isolation defect that can lead to sudden power loss. I request NHTSA review Tesla’s handling of this issue and link this filing to Case #XXX. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11699154

Incident

Nov 12, 2025

While charging at a Tesla Supercharger, the vehicle began making extremely loud mechanical noises on October 7, 2025, as if something inside the high-voltage system was about to explode. A warning appeared stating “Vehicle may shut down at any time.” A service request was opened the next day. Tesla scheduled the first available appointment nearly a month later, leaving the vehicle unsafe to drive. Before that appointment date, on October 31, 2025, the vehicle completely shut down at a Supercharger and could not be restarted. Tesla Roadside Assistance was dispatched three times before the car was successfully towed to a Tesla Service Center. The failure was diagnosed by the service center as a high-voltage isolation fault logged in the Battery Management System. The problem disables the vehicle suddenly and without warning, posing a serious safety hazard if it occurs while driving. Warning lamps and shutdown messages were present prior to the failure. Tesla service staff stated they could not access diagnostic data until the customer paid for unrelated parts (12-volt battery and A/C compressor). After being challenged, they later retrieved limited battery data proving that the high-voltage system had recorded faults. Tesla has not yet issued a written warranty determination or performed a full battery inspection. The incident demonstrates that a high-voltage battery isolation fault can cause the vehicle to become completely inoperable and may create risk of sudden loss of power while driving or charging. The component (battery pack and related electrical systems) remains in Tesla’s possession and can be inspected upon request.

NHTSA ID

11697718

Incident

Oct 7, 2025

I have documented examples of 3 total incidents now where a Tesla OTA "Update" on my vehicle caused a safety issue. Event 1: Nov 27, 2025. Tesla OTA Update renders my left turn light non-functional for ~24 hours. Resolution per forums only was to not touch the card for 24 hours to allow it to shift into "sleep" mode which would resolve the issue. Instructions were that only a service center could resolve the issue. Event 2: Sept 3, 2025. Tesla OTA Update renders my car unable to charge. The issue is resolved following a ~24 hour "sleep" cycle which allows my car to somehow resume charging. Telsa advised the only resolution was to come in for service and to replace a $3000 part. Event 3: Sept 23, 2025. Tesla OTA Update once again renders my car unable to use it's left turn light. Power cycling the vehicle was able to resolve the issue but once again the instructions was only that service could resolve the issue. Each "update" risks sigificant "safety" related issues and Tesla's only resolution is to pay hundreds of dollars for someone to "troubleshoot" that which shouldn't be a problem.

NHTSA ID

11689254

Incident

Sep 23, 2025

Software version 2025.32.3.1. Using Tesla’s auto-steer / enhanced autopilot (not fsd) causes many “phantom braking” events when going through several intersections on my commute. It’ll say a message “Curve Assist Active”, however I’ll be on a very straight and flat road with no curves. It’s 65 mph road and it will brake / slow down the car very hard and fast, if I don’t catch it in time it’ll get down to ~45 mph within a second. Even when traffic is going slow already, like 40 mph, it’ll still bring up the message and try to brake and slow down, though not as hard. Typically to about 25-30 mph. I usually can catch it and use the accelerator to prevent it, but sometimes it’ll happen so sudden and I worry about getting rear-ended by someone behind me. Very repeatable. Very startling and concerning when it happens when I don’t expect it to. I believe it’s a mapping issue as it has not been fixed in over a year and after several software updates.

NHTSA ID

11689065

Incident

Sep 22, 2025

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.

NHTSA ID

11688949

Incident

Sep 22, 2025

Mileage

66,573 mi

During a road accident, Driver airbags were deployed and caused injuries to driver in left hand, left leg and right chest by flying debris’s due to airbag deployment.

NHTSA ID

11688760

Incident

Jul 28, 2025

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.

NHTSA ID

11682696

Incident

Jul 26, 2025

While merging onto the highway an error message showed up on the dash stating "Steering Assist May be Reduced" upon immediately after the steering froze and could only be moved slightly using significant force. Approx. 75lbs. I am athletic and work out and had trouble moving the car to the side. If my wife or daughter had driven the car they would not have been able to steer and this could have caused a significant accident, injury or death. Upon pulling over, I rebooted both computers on the Tesla Model S 75 D and the problem went away. I immediately drove to the Tesla dealer in Chesterfield, MO. There they seemed unconcerned, and advised me it was likely just a firmware issue and wouldn't be able to look at the car until the next week. I was shocked. Since the systems seemed to work I drove home and parked the car. On the driveway, the same error showed up and steering seemed again to lock up. After rebooting problem went away. Looking at the Tesla forums this seems to have happened before and poses a serious danger to the driver, occupants and fellow drivers on the road. I no longer feel safe driving the car.

NHTSA ID

11665990

Incident

Jun 5, 2025

The intermediate steering shaft is binding, causing difficulty turning the wheel and inconsistent steering wheel feel. It often will cause the full self driving to disengage during turns Tesla has revised the part that now includes a protective rubber bootyet has not issued a recall as the part accumulates debris and rust out and binding the universal joint

NHTSA ID

11665336

Incident

Jun 4, 2025

As I was driving down my driveway to the street the power steering failed. It was extremely difficult to then steer. My wife would have been unable to. I was able to re-enter the driveway, with GREAT difficulty from which the car was towed on a flatbed to the local Tesla service center. Had I been on busy city streets of highway I fear what would have happened. The service center cited the failure of a fuse ( fuse part # FUSE,BF180A,32V; #1071379-80-A) Though the car is a 2017 model the odometer shows 42,302 miles. I don’t know if this a systematic issue but I view it as a safety issue and so am reporting it.

NHTSA ID

11659716

Incident

May 6, 2025

Software 2025.14.1, Full Self Driving 12.6.4 (FSD). Vehicle when using FSD continuously slows to 10 MPH below the speed limit. You can manually press the accelerator to speed up but FSD will not brake when doing so and warns you of the same. After a minute of being back at the speed limit, FSD again slows down. Repeat this process constantly. Very dangerous.

NHTSA ID

11658805

Incident

May 4, 2025