Video Summary
- The car is a 2013 Tesla Model S, originally a P85 but now a P90 due to a battery pack swap in 2018.- The customer brought the car in due to two issues with the rear drive unit, which is a typical failure point of Tesla Model S cars.
- The first issue is a milling noise coming from the bearings, either the rotor bearings or the primary drive gear bearings.
- The second issue the customer noticed was a presence of coolant on the rotor encoder sensor, suggesting a leaking rotor coolant seal.
- Coolant presence on the rotor encoder sensor indicates a rotor coolant seal is leaking, potentially causing high voltage isolation loss, damage to rotor bearings, and electronic damage to the inverter.
- A replacement drive unit was installed, but in November of 2014.
- The stator showed signs of rust and must be cleaned with isopropyl alcohol.
- After performing the repair, the presenter took the car for a drive, confirming it to be quieter than before.
