TESLA Fault
BMS-F049
BMS_f049_SW_Thermal_Event
Also written as BMS_F049 / BMS F049 / BMS_f049_SW_Thermal_Event / bms_f049_sw_thermal_event
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-F049 mean?
Tesla fault code in the Battery Management System (BMS) module. The temperature and/or humidity in the Battery Management System (BMS) has exceeded safe levels.
Original Description
The temperature and/or humidity in the Battery Management System (BMS) has exceeded safe levels.
Affected Tesla Models
Model SModel XModel 3Model YCybertruck
What You May Notice
- Battery or temperature warning on touchscreen
- Charging may stop or be severely limited
- Vehicle may enter reduced power mode
How to Diagnose and Resolve
- 1 Stop driving immediately and park in a cool area
- 2 Do not charge the vehicle while the alert is active
- 3 Allow the battery to cool with climate control running via the Tesla app
- 4 If any unusual smells or smoke are present, exit the vehicle immediately and call emergency services
- 5 Contact Tesla Service — this alert indicates a potentially serious thermal event
Severity Notes
BMS-F049 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 →