Model S Plaid/ Long Range 12v battery disconnect instructions

You are at your own risk, I am not responsible for any damages caused by this. This is the same method described by Tesla Engineers in the service manual. As a precaution I leave my doors open and manually power off electronics by the safety tab in the Vehicle’s menu. **I experienced an error the first attempt as the software did not recognize the battery once plugged back up. If this happens the screen will display, “12v battery power is low, power remaining xx%” If you experience this, stay calm, just repeat the process of unplugging the HV battery and 12v battery. It may help to connect the HV fireman’s loop as quickly as possible right after reconnecting the 12v connector. If I do DIYs or tear downs on my vehicle I will post them.