general problems of the 2017 Tesla Model S

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.

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).

The contact owns a 2017 Tesla Model S. The contact stated while approaching a stop light, while the contact was pressing on the brake pedal to slow down the vehicle accelerated on its own causing the contact to struck the vehicle in front. The contact stated that no warning light illuminated, and the brake assist did not activate. The contact stated when the vehicle struck the vehicle in front the vehicle continued driving forward and then the vehicle was able to come to a completely stop. The vehicle had front ended damages and the other vehicle had rear ended damages. No one was injured. The air bags deployed. A police report was not filed. The vehicle was towed to a repair shop. The vehicle was not diagnosed. The manufacturer was contacted and did not provide any assistance. The failure mileage was 54,000.

While reversing into a parking spot, like I have over 1000 times in this car, I heard a loud crack and scrape. When the tow driver got the car up we were able to see it was a lower a-arm failure in outward loaded bearing stress. This seems like a common problem with these cars as a simple google search found many other drivers with similar issues.

I have reached out to Tesla 3 times to fix a sudden unintended acceleration issue. 11 days after I reported the issue and they told me my car was ok to drive I got into a accident. It took Tesla 5 months to give back the reports of the crash in which they said it was my fault. I have lost trust in the company and have seen that 127 other people have been affected by the same issue according to cnn please take care of this issue. Any Tesla owner is a pioneer of a future creation. After the accident they told me autopilot is on beta mode its not perfect yet. They should not allow public to use a hazardous software. Also Tesla employees were very negligent. I almost died in this accident with my father and the manager had no idea of my case even after my car was given to me and they said it was ok to drive. I got into a accident 11 days after they ok'd my car please help as I am frustrated and do not know what to do anymore or who to get to fix my car. I have documentation of addressing sudden intended acceleration to Tesla multiple times. Thank you.

Our Tesla has had two incidents in the last three months of uncontrollable acceleration. . . . Once slowly going into a parking place and once backing out of our garage. The first one resulted in a couple of cracked ribs (with seatbelt on) and $18,000 in damage. The second incident: the Tesla, when backing up went totally out of control by accelerating and it barreled across the street and knocking down a tree before coming to a stop. The Tesla is now in the repair shop with extensive damage to the rear of the car. Not sure yet of the dollar amount. I feel this is a serious defect in the Tesla Model S.

Here is a Tesla in the junkyard: https://. . Read more...