isolation fault

Hello all, I have been working on a 2013 s p85. No high voltage, contactors not energizing and staying open. I have done hvil pinout and isolation test on whole high voltage system. What I found was no isolation faults, but the hvil have no voltage reading coming from the bms. Also I don't have...

Hi, I just recently had an issue on my 2022 Model X Plaid and I'm looking for some help from people more experienced on debugging this kind of complex issue. Last saturday I started a drive around the city, and after parking and putting on reverse, I got the following errors: BMS_a170 and...

Hello, To start off, I have bought a broke down Model S 85 intending to repair it, since the workshop owner the old car owner went to told me, that a battery block was dead. I am a certified mechanic with HV-Tools to meet the precautions of opening a HV car battery, so I didn't think it would...

P85D 2015. August 20 ? Firmware update scheduled. Temp controlled Garaged Ambient temperature in 70’s. Next morning dash message “ cell low voltage undriveabke call service. “ but charge “49%” then everything black. No app connection either. For several months I have been complaining about low...