BMS-U004
BMS_u004_Charge_Cable_Connected
Also written as BMS_U004 / BMS U004 / BMS_u004_Charge_Cable_Connected / bms_u004_charge_cable_connected
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-U004 mean?
Tesla unknown code in the Battery Management System (BMS) module. The battery management system (BMS) has detected a charge cable has been inserted and has prevented the vehicle from entering drive state.
Original Description
The battery management system (BMS) has detected a charge cable has been inserted and has prevented the vehicle from entering drive state.
Affected Tesla Models
What You May Notice
- BMS-U004 may appear with another Tesla alert in the Battery Management System (BMS) system.
- The vehicle may limit charging, driving, comfort, or safety features depending on the active alerts.
- The alert may clear after sleep, but recurring alerts should be treated as service-relevant.
How to Diagnose and Resolve
- 1 Reboot the vehicle (hold both scroll wheels for 10 seconds)
- 2 Check the Tesla app for any pending software updates
- 3 Monitor the alert over 1–2 charge cycles; schedule service if it recurs
Severity Notes
BMS-U004 is a diagnostic or informational code in the Battery Management System system. Typically no immediate action is required.