TESLA Fault
BMS-F152
BMS_f152_SW_pos_contactor_welded
Also written as BMS_F152 / BMS F152 / BMS_f152_SW_pos_contactor_welded / bms_f152_sw_pos_contactor_welded
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-F152 mean?
Tesla fault code in the Battery Management System (BMS) module. The positive contactor does not fully open and is stuck or welded.
Original Description
The positive contactor does not fully open and is stuck or welded.
Affected Tesla Models
Model SModel XModel 3Model YCybertruck
What You May Notice
- Red warning light on dashboard: The positive contactor does not fully open and is stuck or welded.
- Vehicle may refuse to drive or charge until the fault is cleared
- Sudden power reduction or shutdown may occur while driving
How to Diagnose and Resolve
- 1 Stop driving immediately and move to a safe location
- 2 Do not attempt to charge the vehicle — active fault: "The positive contactor does not fully open and is stuck or w"
- 3 Call Tesla Roadside Assistance (+1-877-798-3752) for a flatbed tow
- 4 At the Service Center, Tesla technicians will inspect the HV battery pack and BMS firmware
Severity Notes
BMS-F152 is classified as a Fault, indicating a critical issue in the Battery Management System system. Do not continue driving and contact Tesla Service immediately.
Other BMS Codes
BMS_a001 BMS_a002 Tesla alert code in the Battery Management System (BMS) modu... BMS_a003 Tesla alert code in the Battery Management System (BMS) modu... BMS_a004 Tesla alert code in the Battery Management System (BMS) modu... BMS_a007 Tesla alert code in the Battery Management System (BMS) modu... BMS_a016 Tesla alert code in the Battery Management System (BMS) modu... BMS_a017 BMS_a018
View all BMS codes →