russw
New Member
There's too much PII to just upload the invoice. But I've copied the important stuff below.
Repair Notes: Diagnosed and Replaced Pyrotechnic Battery Disconnect. Replaced 12V Battery.Replaced Rear Drive Unit Inverter.We confirmed the customers concern. We then removed and replaced the rear inverter as well asthe other parts listed above in accordance with the Tesla service manual. We took the vehicle on atest drive to observe and verify normal operation.Correction: Diagnosis: High Voltage Circuit Integrity CheckCorrection: Pyrotechnic Battery Disconnect (Remove & Replace) - Remove and Replace
Parts Replaced or AddedPartQuantityHIGH VOLTAGEBATTERY -PYROTECHNICDISCONNECT -ASSEMBLY(1064689-00-J)1.00Correction: Battery - 12V (Lead Acid) (Remove & Replace) - Remove and Replace
Parts Replaced or AddedPartQuantityASSEMBLY - 12VBATTERY AND VENTPLUG(1129182-00-B)1.00Correction: Inverter - Rear Drive Unit (3DU) (Remove & Replace) - Remove and Replace
Parts Replaced or AddedPartQuantityBOLT AND WASHERM6X22(1112246-00-A)3.00BOLT, TE,M10X1.5X75.2,STL[109],ZNNI+WAX.(1111864-00-B)3.00BOLT M6-1.0X23(1100020-00-A)12.00LABEL-COVER-ACCESS-LUG-PHASE(1096344-00-C)1.00DRIVE INVERTER ASSEMBLY-REAR 3DU- HIGHCURRENT- TWOPHASE OPEN(1079924-17-L)1.00BOLT,PF,M6x12,2.000.00
Same thing happened to my 2022 M3LR last week. 25K miles on it, in SF Bay Area so no extreme temperatures. I got out of the car and the pyro fuse blew (you can hear the pop).Threw lots of errors and wouldn't drive after that. Had driven it about 15 miles to the location it died. It had been 8 hours or so since I charged it to 80% at home (charges at 11Kwh) that morning. Wasn't particularly cold (50 degrees F?).
The interesting bit is that they also replaced my 12V battery in addition to the rear motor inverter, same as above. They said that when the fuse blows it protects the HV battery but not the 12v battery. Seems odd, but ok, must be a technical reason for that.
The service center said the failure is very rare.