BMS-A016
BMS_a016_Pack_Module_Id_Mismatch
Also written as BMS_A016 / BMS A016 / BMS_a016_Pack_Module_Id_Mismatch / bms_a016_pack_module_id_mismatch
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-A016 mean?
Tesla alert code in the Battery Management System (BMS) module. The module IDs do not match the pack type set by the config block Any module has all devices reporting invalid module IDs with correct CRCs, or any module has all devices reporting incorrect module ID CRCs (corrupt module ID data) All modules have at least one device reporting a valid module ID with a correct CRC May indicate an incompatible module has been installed for the pack type, which could lead to range loss due to CAC and SOC imbalance. If all modules are reported with invalid module IDs, this may indicate that the wrong config block has been written for the given pack hardware
Original Description
The module IDs do not match the pack type set by the config block Any module has all devices reporting invalid module IDs with correct CRCs, or any module has all devices reporting incorrect module ID CRCs (corrupt module ID data) All modules have at least one device reporting a valid module ID with a correct CRC May indicate an incompatible module has been installed for the pack type, which could lead to range loss due to CAC and SOC imbalance. If all modules are reported with invalid module IDs, this may indicate that the wrong config block has been written for the given pack hardware
Affected Tesla Models
What You May Notice
- BMS-A016 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-A016 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.