BMS-F085
BMS_f085_SW_Prechg_Too_Slow
Also written as BMS_F085 / BMS F085 / BMS_f085_SW_Prechg_Too_Slow / bms_f085_sw_prechg_too_slow
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-F085 mean?
Tesla fault code in the Battery Management System (BMS) module. The Battery Management System (BMS) has detected that the precharge process is too slow to allow charging.
Original Description
The Battery Management System (BMS) has detected that the precharge process is too slow to allow charging.
Affected Tesla Models
What You May Notice
- Red warning light on dashboard: The Battery Management System (BMS) has detected that the precharge process is too slow to allow charging.
- 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 Battery Management System (BMS) has detected that the pr"
- 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-F085 is classified as a Fault, indicating a critical issue in the Battery Management System system. Do not continue driving and contact Tesla Service immediately.