The Redundant Control Unit (RCU) has experienced a pump motor issue.
<0.01% (Extremely rare)
Backup power braking assist unavailable
OK to drive - Schedule service
The RCU may not be able to perform backup power braking assist.
The Redundant Control Unit (RCU) has experienced a pump motor issue.
The RCU has detected a motor power line open or short, the motor is stuck, or the motor built-in self test has failed.
The RCU pump motor startup checks pass after the RCU is power cycled. If the issue persists, the RCU may need to be replaced.
Model Y 2025+
customer, service-fix
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