RCU_a005_supplyUndervoltage

The Redundant Control Unit (RCU) power supply voltage is too low.

Live incidence rate

<0.01% (Extremely rare)

Vehicle messages

Backup power braking assist unavailable
OK to drive - Schedule service

Impact

The RCU may not be able to perform backup power braking assist.

Description

The Redundant Control Unit (RCU) power supply voltage is too low.

Cause

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.

Models

Model Y 2025+

Visibility

customer, service-fix

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