BMS-A084
BMS_a084_SW_Sleep_Wake_Aborted
Also written as BMS_A084 / BMS A084 / BMS_a084_SW_Sleep_Wake_Aborted / bms_a084_sw_sleep_wake_aborted
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-A084 mean?
Tesla alert code in the Battery Management System (BMS) module. Diagnostic alert for sleep and wake transitions BMS has detected that CP fault asserted BMS was unable to close contactors
Original Description
Diagnostic alert for sleep and wake transitions BMS has detected that CP fault asserted BMS was unable to close contactors
Affected Tesla Models
What You May Notice
- BMS-A084 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-A084 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.