One or more of the messages the Drive Inverter (DI) Electronic Control Unit (ECU) receives periodically from the Decoupled Brake Booster (BB) ECU is not received, indicating the BB ECU may be unavailable (MIA).
<0.01% (Extremely rare)
None displayed
Regenerative-friction brake torque blending functionality may be limited or unavailable.
One or more of the messages the Drive Inverter (DI) Electronic Control Unit (ECU) receives periodically from the Decoupled Brake Booster (BB) ECU is not received, indicating the BB ECU may be unavailable (MIA).
One or more of the expected messages from the BB ECU is not received.
The DI ECU starts receiving the expected messages from the BB ECU during the next drive cycle.
Model Y 2025+
service-fix
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