BMS family
BMS_w047_SW_Memory_Error
Vehicle may not restart
What does the BMS_w047_SW_Memory_Error alert mean?
This alert indicates potential corruption in the battery management system (BMS) board flash memory or RAM.
What you'll see in your Tesla
- Vehicle may not restart
- Service is required
What triggers it
The BMS detects an issue with the board flash memory or RAM.
When it clears
The BMS detects that the condition clears
Potential impact
Inability to charge, drive, or support the low voltage (LV) system
Affected models
Model S 2012-2020
Model X 2015-2020
Track your Tesla's alerts automatically
Alerts like this reach MyTeslaMate through your car's Tesla telemetry API. MyTeslaMate logs every alert your Tesla reports and turns it into readable history and real-time notifications — hosted TeslaMate with no server to run.