2018 Tesla Model 3 Fuel System Problems

Power Conversion System (PCS) failed Doesn’t allow car to charge. Car has only 33k Miles on it.

Salt Lake City Tesla Service Center 801-401-4135 I purchased a 2018 Tesla Model 3 Long Range AWD, VIN [XXX] . The car’s battery and motor drive train units are still within the warranty. On [XXX], the car’s POWER CONVERSION SYSTEM (PCS) stopped working spontaneously, without any physical damage caused by the owner. The PCS is required to charge the car. A broken PCS rendered my car essentially unchargeable, thus undriveable, and unusable. The PCS is a critical component required for normal car function. Without a functioning PCS, you have a broken car. This is a SAFETY ISSUE because you can be stranded in the middle of nowhere without the ability to charge and safely extract yourself from inclement weather and environmental exposure. On [XXX], I transported the car all the way from Pocatello, the 169 miles to the nearest Tesla Service Center in Salt Lake City, UT, at my own expense. On [XXX], the car was diagnosed, and repaired. On [XXX], before paying for the repair, I spoke to the Tesla Service center manager because I felt this component failure should have been covered under the warranty because it represents a FAILURE of a CRITICAL COMPONENT. This is a safety risk, as I mentioned above. He expressed sympathy with my situation and said that broken PCS was a known issue in early Tesla Model 3’s. After doing some research, this is indeed the case, with many online complaints about a broken PCS in Tesla Model 3’s. He said he hoped Tesla would some day reconsider, and that a retroactive reimbursement was in the realm of possibility, as has been done in the past for various component failures in Tesla vehicles. Overall, my grievance with Tesla is that a broken PCS is a CRITICAL FAILURE of a component REQUIRED to have a functioning, chargeable car, and it is a component with a KNOWN HIGH RATE OF FAILURE in Tesla Model 3’s. This should be covered by the battery and drive train warranty. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

On December 27, 2022, in light evening street traffic, my car accelerated briefly without the accelerator pedal being applied. I took my foot off the accelerator pedal to decelerate for an upcoming red light. While my foot was off the pedal, the car accelerated and lurched forward. The car was towed to the Tesla Sacramento Service Center. The technician incorrectly cited the "creep mode" as being involved. The car was in motion when it unexpectedly accelerated. "Creep Mode" only engages when the car is close to or fully stopped. Tesla technician was unable to determine an accurate reason for the unexpected acceleration.

PCS Charger (Onboard) is failing on numerous early build Model 3 cars (2017-2019). Telsa is claiming that this is not included in battery warranty, however Tesla's own service manual shows this part specifically in the HV Battery System. I still have the fault PCS charger in the car, it is limited to 32Amps but several forums and webpages state its only a matter of time before I am limited to 16Amps The car is unable to charge at a reasonable recovery rate in which you can even use the vehicle for it's intended purchase. Tesla has acknowledge it's failure but is unable to produce actual number of failed units. The warning lamp had been displaying "dirty electrical grid" for quite some time until I was able to search the internet for the exact issue.

When driving with the driver assist Auto Pilot active it's possible to disengage Auto Pilot but Traffic Aware Cruise Control (TACC) remains active. When Auto Pilot is active the auto pilot system has control of the car including navigation, maintaining the lane, and speed. Speed can be set by the car or driver. In some cases disengaging auto pilot disables TACC , in other cased TACC remains active. A driver may be caught off-guard when the car continues forward at the set speed after disengaging auto pilot. This difference in behavior can surprise a driver and that puts every other driver in the area at risk. Ways to disengage Auto Pilot : 1) Press up on the right-side stalk (also used to engage TACC & Auto Pilot) on the steering column behind the steering wheel. When pressing up on the stalk Auto Pilot and TACC are both disabled. 2) Step on the brake pedal. Pressing the brake pedal disables both Auto Pilot and TACC. 3) Turn the steering wheel, for example to avoid a road hazard or a vehicle in the car's path. Turning the steering wheel only disables Auto Pilot functions, TACC remains active. The car continues to move forward at the speed Auto Pilot was using. The three disengagement methods have similar, but different outcomes. The result is a driver by moving the steering wheel can disengage Auto Pilot while cruise control remains active. This problem is compounded when considering Tesla's forward collision warning and avoidance has issues with stationary vehicles like those stopped at off ramp traffic lights or in traffic jams (this will be covered in another report). Since cruise control remains active when Auto Pilot is disengaged by turning the steering wheel is as designed there are no warnings or alerts. Several time I've had to swerve or slam the brakes to avoid contact with other cars and trucks after taking control with the steering wheel while Auto Pilot was active. This happened several times, date listed in Additional Details is near first time.