The LED on the control button unit, malfunction

Read the instructions below then start the fault diagnostic procedure.

Symptom: The LED on the control button unit, malfunction.

The LED on the control button unit, malfunction

Fault symptoms

The LED on the control button unit, malfunction.

The LED shows a green light when the ignition is switched on.

Conditions

No fault codes stored in the car which affect the status of the LED.

Diagnostic help

The LED shows a green or a red light to indicate the system status.

-	Continuous Green - Indicates that the OnStar system is activated.

-	Blinking Green - Indicates that a call is in progress.

-	Continuous Red - Indicates that the system is not functioning correctly.

-	Blinking Red - Indicates that the selected service is active but that there is a fault in the system.

Fault-related functions in the diagnostic tool

Activation of the LED, green/red.