TESLA Alert
BMS-A039
BMS_a039_SW_DC_Link_Over_Voltage
Also written as BMS_A039 / BMS A039 / BMS_a039_SW_DC_Link_Over_Voltage / bms_a039_sw_dc_link_over_voltage
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-A039 mean?
Tesla alert code in the Battery Management System (BMS) module. BMS has detected that the DC Link voltage is too high
Original Description
BMS has detected that the DC Link voltage is too high
Affected Tesla Models
Model SModel XModel 3Model YCybertruck
What You May Notice
- BMS-A039 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-A039 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.
Other BMS Codes
BMS_a001 BMS_a002 Tesla alert code in the Battery Management System (BMS) modu... BMS_a003 Tesla alert code in the Battery Management System (BMS) modu... BMS_a004 Tesla alert code in the Battery Management System (BMS) modu... BMS_a007 Tesla alert code in the Battery Management System (BMS) modu... BMS_a016 Tesla alert code in the Battery Management System (BMS) modu... BMS_a017 BMS_a018
View all BMS codes →