Complaint 2212101

Complaint Summary

ENGINE

Owner Narrative

Following a coolant rapid mate replacement performed by an authorized Tesla service center, the vehicle experienced a complete shutdown on a public road the same evening it was returned. The high-voltage cooling system was not properly purged of air following the service. This caused low coolant flow to the rear drive unit during a 63-mile drive in record heat. The fault cascade included a HIGH VOLTAGE ISOLATION FAULT (BMS_f123), drive inverter warning (DI_w126), and multiple battery management warnings. The instrument cluster displayed a red emergency warning: "Vehicle shutting down — PULL OVER SAFELY." The vehicle required towing. The failure was confirmed by the service center's own follow-up invoice, which documented "trapped air pockets in the coolant system following the most recent service" as the cause. The corrective repair was performed at $0 as a Goodwill service — the service center's internal acknowledgment of liability. The service advisor made a written text admission of causation the following day, then retracted it in a recorded phone call. Both are preserved. No post-repair Isolation Resistance test results were provided. The HV isolation fault may indicate latent thermal damage to HV insulation that could cause a safety failure at higher mileage outside any remaining warranty. The vehicle is available for inspection upon request.

Owner-submitted narrative on file with NHTSA. Complaint narratives are self-reported and have not been verified.