BMS-F133
BMS_f133_SW_Service_Tool
Also written as BMS_F133 / BMS F133 / BMS_f133_SW_Service_Tool / bms_f133_sw_service_tool
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-F133 mean?
Tesla fault code in the Battery Management System (BMS) module. This alert is triggered when a SW tool (e.g. Toolbox) connected to the vehicle requests an action from the Battery Management System (BMS) that is either improperly requested or is not permitted in the current BMS state. This alert clears immediately after it is set, and it is only used to inform the customer of an BMS action that is not permitted or is improperly requested.
Original Description
This alert is triggered when a SW tool (e.g. Toolbox) connected to the vehicle requests an action from the Battery Management System (BMS) that is either improperly requested or is not permitted in the current BMS state. This alert clears immediately after it is set, and it is only used to inform the customer of an BMS action that is not permitted or is improperly requested.
Affected Tesla Models
What You May Notice
- Red warning light on dashboard: This alert is triggered when a SW tool (e.g. Toolbox) connected to the vehicle requests an action from the Battery Manag
- 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: "This alert is triggered when a SW tool (e.g. Toolbox) connec"
- 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-F133 is classified as a Fault, indicating a critical issue in the Battery Management System system. Do not continue driving and contact Tesla Service immediately.