05/18/2026
Last week Pinpoint Repair revived a 2015 model S Tesla. This one was towed in, would not close the high voltage contactors or move on its own. Tons of fault codes. High voltage (hv) isolation too low. This means hv is detected on chassis ground. Did an insulation check on the drive unit and found only a fraction of a mega ohm. Some moisture found on the speed sensor, this indicates the common issue of coolant intrusion into the drive unit , which shorts out the windings to ground. Swapped out the drive unit with a reman. One with updated bearings and seals and the coolant delete mod that prevents coolant intrusion. She’s up and running again!
