RCU_a048 — ESP Fr LWSSL Invalid
Full alert identifier: RCU_a048_ESPFrLWSSLInvalid
Alert description
Front left wheel speed sensor signal is invalid.
Potential impact
There may be an issue with the transmitting Electronic Control Unit (ECU), the Integrated Dynamic Brake (IDB).
Set condition
The RCU receives the ESP_wheelSpeedFrL as Signal Not Available (SNA) for 100 milliseconds.
Clear condition
Clears when the Redundant Control Unit (RCU) receives a valid ESP_wheelSpeedFrL signal for 100 milliseconds while the vehicle is parked.
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of RCU_a048.