BMS-F020
BMS_f020_SW_BMB_PCB_OT
Also written as BMS_F020 / BMS F020 / BMS_f020_SW_BMB_PCB_OT / bms_f020_sw_bmb_pcb_ot
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-F020 mean?
Tesla fault code in the Battery Management System (BMS) module. The battery management system (BMS) has detected that the battery monitor board (BMB) printed circuit board (PCB) on the high voltage (HV) battery has experienced an over temperature event.
Original Description
The battery management system (BMS) has detected that the battery monitor board (BMB) printed circuit board (PCB) on the high voltage (HV) battery has experienced an over temperature event.
Affected Tesla Models
What You May Notice
- Charging slows significantly or stops
- Battery temperature warning during charging or in hot ambient conditions
- Possible reduced range estimate
How to Diagnose and Resolve
- 1 Disconnect the charger
- 2 Move the vehicle to a cooler location if possible
- 3 Use the Tesla app to activate climate control to help cool the battery
- 4 Wait at least 1 hour before attempting to charge again
- 5 If this occurs repeatedly, schedule a Tesla Service appointment for battery inspection
Severity Notes
BMS-F020 is classified as a Fault, indicating a critical issue in the Battery Management System system. Do not continue driving and contact Tesla Service immediately.