Tesla Powerwall › expansion CAN bus
Powerwall 3 goes dark with false CAN warning
reported in the field
Symptoms
- No lights, no solar, no network
- After power cycle the logo flashes red several times before recovering
- Tesla One says check CAN terminations on expansion ports although no expansion is fitted
Alerts and codes
Battery Expansion CAN Termination Issues
The cause and the fix
Subscribers see the cause, the fixes that worked and who did them, part numbers and recent prices when a part is involved, and the field reports behind this entry.