NHTSA Complaint #11482849 — 2018 TESLA MODEL 3

A portion of the Power Conversion System "PCS" has failed in my 2018 Tesla Model 3 extended range with 34,000 miles, resulting in the inability to charge the vehicle but at 32 of 48 capable amps. Reports from other Tesla owners indicate that remaining portions of the PCS can fail resulting in charge amperage reduction to 16 amps or inability to AC charge completely if all portions of the PCS fail. This issue is apparently not an isolated incident. The PCS in this vehicle appears to be flawed due to reports of early failure and the number of reported failures. The issue goes beyond the previously released service bulletin of 2018 Tesla Model 3s manufactured between June and July 2018. Tesla will not cover the cost for the repair, either in good faith or under the battery and drive unit warranty. The repair is costly, but left unrepaired the car may not be capable to charging using level 1 or 2 charging if the PCS fails completely. The error for this issue is seemingly difficult to find. It is not indicated on the Tesla app. It is only discoverable when in the car, while the car is charging and when trying to charge at or above 33 amps. Unlike a traditional check engine light, the error goes away and because the car still charges, it is difficult to realize an issue exists. I'm unaware of when the error first occurred because of this. It is likely the error existed before the general warranty for the car had expired. It doesn't appear Tesla does a diagnostics scan for this error during service appointments which I would think would be routine. The description and troubleshooting steps for this error are also heavily weighted towards possible power grid issues and only suggest a possibility of there being an issue with the car upon further investigation. I'm sure power grid issues exist and often result in the error, but it seems the PCS failure is more often the cause and should be equally stressed.