BMS-W008
BMS_w008_HW_HVIL
Also written as BMS_W008 / BMS W008 / BMS_w008_HW_HVIL / bms_w008_hw_hvil
Why does the exact Tesla alert ID matter?
Record the exact alert ID, including underscores, suffixes, and companion alerts. Tesla alerts that look similar can point to different modules, timestamps, and service procedures.
What does BMS-W008 mean?
Tesla warning code in the Battery Management System (BMS) module. The Battery Management System (BMS) is reporting that there is a hardware issue with the high voltage interlocking loop (HVIL). If this alert is present, the vehicle may have been in Drive and the contactors did not open. Once the vehicle exits Drive, the alert will become a fault while in support mode, and the vehicle may not be able to support 12V, charge, or re-enter Drive.
Original Description
The Battery Management System (BMS) is reporting that there is a hardware issue with the high voltage interlocking loop (HVIL). If this alert is present, the vehicle may have been in Drive and the contactors did not open. Once the vehicle exits Drive, the alert will become a fault while in support mode, and the vehicle may not be able to support 12V, charge, or re-enter Drive.
Affected Tesla Models
What You May Notice
- Battery management warning: The Battery Management System (BMS) is reporting that there is a hardware issue with the high voltage interlocking loop
- Charging speed may be limited or sessions interrupted early
- Reduced estimated range may appear on the touchscreen
How to Diagnose and Resolve
- 1 Perform a soft reboot: hold both scroll wheels until the screen restarts
- 2 Try a full charge cycle to recalibrate the BMS
- 3 If "The Battery Management System (BMS) is reporting t" persists after reboot, schedule a Tesla Service appointment
- 4 Avoid DC fast charging until the issue is resolved
Severity Notes
BMS-W008 is a Warning in the Battery Management System system. Schedule service soon. Monitor your vehicle for additional warnings.