One or more of the messages the Drive Inverter Rear (DIR) 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
Drive system may not function as expected.
One or more of the messages the Drive Inverter Rear (DIR) 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 DIR ECU starts receiving the expected messages from the BB ECU during the next drive cycle.
Model Y 2025+
service-fix
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