BMS-F003
BMS_f003_HW_Module_Alarm
Also written as BMS_F003 / BMS F003 / BMS_f003_HW_Module_Alarm / bms_f003_hw_module_alarm
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-F003 mean?
Tesla fault code in the Battery Management System (BMS) module. The battery management system (BMS) has detected that one or more of the battery modules has reported an alert. If this alert is present, it may also be falsely set at extremely low 12V battery voltages.
Original Description
The battery management system (BMS) has detected that one or more of the battery modules has reported an alert. If this alert is present, it may also be falsely set at extremely low 12V battery voltages.
Affected Tesla Models
What You May Notice
- Significantly reduced driving range
- Vehicle may fail to start, especially in cold weather
- Warning light on dashboard indicating battery issue
How to Diagnose and Resolve
- 1 Check 12V battery voltage first — if 12V is low (<11V), charge it or replace it, as this alert can be falsely triggered
- 2 Perform a full reboot: hold both brake pedal and scroll wheels for 10 seconds
- 3 If alert persists after 12V is confirmed healthy, do not continue driving
- 4 Schedule a Tesla Service appointment
- 5 Technician will run diagnostics on individual battery modules
Severity Notes
BMS-F003 is classified as a Fault, indicating a critical issue in the Battery Management System system. Do not continue driving and contact Tesla Service immediately.