BMS-W165
BMS_w165_SW_Module_SOC_Imbalance
Also written as BMS_W165 / BMS W165 / BMS_w165_SW_Module_SOC_Imbalance / bms_w165_sw_module_soc_imbalance
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-W165 mean?
Tesla warning code in the Battery Management System (BMS) module. This alert is for engineering visibility. It does not mean the pack has an issue, and the pack should not be replaced due to this alert. The goal of the alert is to detect low State of Charge (SOC) outlier conditions at the pack level that would otherwise be ignored by the "intra-bmb" check (BMS_w164). Alert Set Condition: (SOC.avg - SOC.min) > 8% and BMS_w164 is not being reported.
Original Description
This alert is for engineering visibility. It does not mean the pack has an issue, and the pack should not be replaced due to this alert. The goal of the alert is to detect low State of Charge (SOC) outlier conditions at the pack level that would otherwise be ignored by the "intra-bmb" check (BMS_w164). Alert Set Condition: (SOC.avg - SOC.min) > 8% and BMS_w164 is not being reported.
Affected Tesla Models
What You May Notice
- Battery management warning: This alert is for engineering visibility. It does not mean the pack has an issue, and the pack should not be replaced du
- Charging speed may be limited or sessions interrupted early
- Reduced estimated range may appear on the touchscreen
How to Diagnose and Resolve
- 1 Perform a soft reboot: hold both scroll wheels until the screen restarts
- 2 Try a full charge cycle to recalibrate the BMS
- 3 If "This alert is for engineering visibility. It does " persists after reboot, schedule a Tesla Service appointment
- 4 Avoid DC fast charging until the issue is resolved
Severity Notes
BMS-W165 is a Warning in the Battery Management System system. Schedule service soon. Monitor your vehicle for additional warnings.