BMS_w172
BMS_w172_SW_Drive_Iso_Warning
What does BMS_w172 mean?
Tesla warning code in the Battery Management System (BMS) module. The addition of a Limp Reaction to Repeated Isolation (f027) alert so the customers could feel a limp response a few drive cycles before the vehicle became Vehicle Off Road (VOR) was requested to allow customers to have ample warning and a noticeable driving symptom before the VOR occurs. The current specification will set a limp when one of the following conditions are met: 2 drive cycles with alert 35 (SW_Isolation). 7 drive cycles with alert 142 (SW_Isolation_Degradatio). 2 drive cycles with alert 028 (SW_Drive_Iso_StdDev).
Original Description
The addition of a Limp Reaction to Repeated Isolation (f027) alert so the customers could feel a limp response a few drive cycles before the vehicle became Vehicle Off Road (VOR) was requested to allow customers to have ample warning and a noticeable driving symptom before the VOR occurs. The current specification will set a limp when one of the following conditions are met: 2 drive cycles with alert 35 (SW_Isolation). 7 drive cycles with alert 142 (SW_Isolation_Degradatio). 2 drive cycles with alert 028 (SW_Drive_Iso_StdDev).
Severity Notes
BMS_w172 is a Warning in the Battery Management System system. Schedule service soon. Monitor your vehicle for additional warnings.
Other BMS Codes
Tesla alert codes sourced from the community-maintained Tesla Alerts Dictionary. This information is for educational purposes only. Always consult Tesla Service for official diagnosis and repairs.