RCU_a005_supplyUndervoltage
Description
The Redundant Control Unit (RCU) power supply voltage is too low.
Condition
The RCU power supply voltage is lower than 9 volts for 500 milliseconds or lower than 6.5 volts for 60 milliseconds.
Clear Condition
The RCU power supply voltage has returned above 9.5 volts for 500 milliseconds.
Potential Impact
The RCU may not be able to perform backup power braking assist.
Customer Facing Message 1
Backup power braking assist unavailable
Customer Facing Message 2
OK to drive - Schedule service
Audiences
customer;service-fix
Models
Model Y 2025+