RCU_a004_supplyOvervoltage
Description
The Redundant Control Unit (RCU) power supply voltage is too high.
Condition
The RCU power supply voltage is higher than 18 volts for 2 seconds or higher than 19 volts for 500 milliseconds.
Clear Condition
The RCU power supply voltage has returned below 17.5 volts.
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+