Last month I took my 2015 P85D with 75,500 miles to Tesla Costa Mesa SC with a short list of repairs including asking them to pull my P85D's rear Large Drive Unit ("LDU") speed sensor and check for coolant since this is a known issue. They didn't so I took it to the awesome guys at QC Charge in Vista, CA (SoCal) and paid them to pull my LDU speed sensor, test drive my P85D, and look over my P85D for any other issues I should bring up under warranty. QC Charge noted 2 issues:
I created another Tesla SC Service Request, took it in a showed them my 2 pictures of coolant on my rear Large Drive Unit speed sensor (shown below). SC Adviser confirmed coolant leak and replaced my LDU under my 8-year extended warranty.
Concern: Customer states: Something Else - Coolant on LDU speed sensor verifying seal compromised requiring LDU replacement
Technician Verified customer concern and found coolant residue in the encoder sensor. Technician removed and Replaced Large Rear Drive Unit, performed multiple coolant air purges and performed firmware update, technician test drove vehicle after repairs and verified vehicle operating properly at this time, no further repairs needed at this time. Performed a four wheel alignment to tesla specification.
Correction: General Diagnosis
Correction: Drive Unit - Rear - Large (Remove & Replace)
Parts Replaced or Added
- ATF, QUART(1031106-00-A) 3.00
- COOLANT, ETHYLENE 5.00 GLYCOL, 50/50 MIX(1029320-00-A)
- SIDE MOTOR MOUNT 1.00 ASSEMBLY(1028034-00-B)
- ASSEMBLY - REMAN - 1.00 SPORT REAR DRIVE UNIT - LDU(1025598-00-T)
- NUT HF M24X1.5 [8.8] ZNFL- 2.00 W(1020297-00-A)
- WASHER SAFETY 2.00 M24X39(1020296-00-B)
- ASY,HV 1.00 COVER,INVERTER(1003783-00-B)
HOWEVER Tesla refused to replace my front drive unit ("FDU") which has a VERY noticeable worn primary drive gear bearing WHINE, especially at 25 to 35 MPH in Range Mode (which basically makes my P85D front wheel drive). They admit it's there but "not significant enough warranting replacement".
My Tesla 8-year Extended Warranty expires July 31st.
Any suggestions for getting Tesla to replace my FDU under warranty?