Redundant Control Unit (RCU) actuation message RCU_actuation was not received or message length is incorrect.
<0.01% (Extremely rare)
Backup power braking assist unavailable
OK to drive - Schedule service
There may be an issue with the transmitting Electronic Control Unit (ECU) or CAN bus.
Redundant Control Unit (RCU) actuation message RCU_actuation was not received or message length is incorrect.
RCU_actuation is not received for longer than 200 milliseconds or RCU_actuation is received with incorrect data length for longer than 200 milliseconds.
RCU_actuation Controller Area Network (CAN) message is received with correct data length for 200 milliseconds.
Model Y 2025+
customer, service-fix
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