BMS-W169
BMS_w169_SW_ModuleBrick_Mismatch
Also written as BMS_W169 / BMS W169 / BMS_w169_SW_ModuleBrick_Mismatch / bms_w169_sw_modulebrick_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-W169 mean?
Tesla warning code in the Battery Management System (BMS) module. This alert points to a difference between the sum of the bricks of one module and the module voltage. This alert can be concerning as it reflects a bad voltage sensing from a brick.
Original Description
This alert points to a difference between the sum of the bricks of one module and the module voltage. This alert can be concerning as it reflects a bad voltage sensing from a brick.
Affected Tesla Models
What You May Notice
- Battery management warning: This alert points to a difference between the sum of the bricks of one module and the module voltage. This alert can be
- 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 points to a difference between the sum " persists after reboot, schedule a Tesla Service appointment
- 4 Avoid DC fast charging until the issue is resolved
Severity Notes
BMS-W169 is a Warning in the Battery Management System system. Schedule service soon. Monitor your vehicle for additional warnings.