BMS-U019
BMS_u019_Acceleration_Reduced
Also written as BMS_U019 / BMS U019 / BMS_u019_Acceleration_Reduced / bms_u019_acceleration_reduced
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-U019 mean?
Tesla unknown code in the Battery Management System (BMS) module. This alert is triggered by the Battery Management System (BMS) if one of the contactors has accumulated stress beyond a certain threshold.
Original Description
This alert is triggered by the Battery Management System (BMS) if one of the contactors has accumulated stress beyond a certain threshold.
Affected Tesla Models
What You May Notice
- BMS-U019 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-U019 is a diagnostic or informational code in the Battery Management System system. Typically no immediate action is required.