BMS-W100
BMS_w100_HW_BMB_Reset
Also written as BMS_W100 / BMS W100 / BMS_w100_HW_BMB_Reset / bms_w100_hw_bmb_reset
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-W100 mean?
Tesla warning code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected an internal error while the vehicle was in a drive state and has prevented the Battery Monitor Board (BMB) from setting the hardware (HW) Module Alarm.
Original Description
The Battery Management System (BMS) has detected an internal error while the vehicle was in a drive state and has prevented the Battery Monitor Board (BMB) from setting the hardware (HW) Module Alarm.
Affected Tesla Models
What You May Notice
- Battery management warning: The Battery Management System (BMS) has detected an internal error while the vehicle was in a drive state and has preven
- 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) has detected a" persists after reboot, schedule a Tesla Service appointment
- 4 Avoid DC fast charging until the issue is resolved
Severity Notes
BMS-W100 is a Warning in the Battery Management System system. Schedule service soon. Monitor your vehicle for additional warnings.