BMS_a085_SW_Pack_Contactor_Mismatch

The battery management system (BMS) detects a mismatch between the actual and commanded pack contactor set state.

Live incidence rate

<0.01% (Extremely rare)

Vehicle messages

Vehicle shutting down - PULL OVER SAFELY
Operation may be restored on next drive

Impact

Inability to charge, drive, or support the low voltage (LV) system

Description

The battery management system (BMS) detects a mismatch between the actual and commanded pack contactor set state.

Cause

High voltage processor (HVP) comms are OK and pack contactors were closed and pack contactors are now open / opening and BMS_packContactorRequest has remained closed.

Clear condition

HVP_packContactorSetState is correct for the current BMS_packContactorRequest.

Models

Model 3 2017-2023, Model 3 2024+, Model S 2021+, Model X 2021+, Model Y, Model Y 2025+

Visibility

customer, service-fix

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