BMS-A094
BMS_a094_SW_Drive_Inverter_MIA
Also written as BMS_A094 / BMS A094 / BMS_a094_SW_Drive_Inverter_MIA / bms_a094_sw_drive_inverter_mia
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-A094 mean?
Tesla alert code in the Battery Management System (BMS) module. BMS sees the Drive Inverter MIA BMS detects that both of the DC Link (pack) switches is welded BMS cannot communicate with the PCS High voltage isolation is too low for the vehicle to operate The conditions for detecting a potential propagating thermal event were observed.
Original Description
BMS sees the Drive Inverter MIA BMS detects that both of the DC Link (pack) switches is welded BMS cannot communicate with the PCS High voltage isolation is too low for the vehicle to operate The conditions for detecting a potential propagating thermal event were observed.
Affected Tesla Models
What You May Notice
- BMS-A094 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-A094 is an Alert in the Battery Management System system. Confirm the vehicle screen and Tesla app show no driving or charging restrictions, and schedule service if the alert returns.