BMS_a109_HW_BMB_Mute_Status_Mismatch

A battery monitoring board (BMB) device has a mute status that does not align with the mute or unmute command sent by the battery management system (BMS).

Live incidence rate

<0.01% (Extremely rare)

Vehicle messages

None displayed

Impact

Bleeding bricks that do not mute during balancing can impact the state of charge (SOC) estimation.

Description

A battery monitoring board (BMB) device has a mute status that does not align with the mute or unmute command sent by the battery management system (BMS).

Cause

Mute is disabled for any device while balancing, or otherwise enabled for any device.

Clear condition

Mute is enabled for all devices while balancing, or otherwise disabled for all devices.

Models

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

Visibility

service-fix

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