Auxiliary heater
â–¶ How to fix
Check the wiring and the connector.Check the remote control for the auxiliary heater (CT/CT-R).Check the auxiliary heater.Clear the fault codes in the ACC control unit.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
The output signal from the auxiliary heater is short circuited to positive supply or earth, or the circuit is open.
Possible cause
Fault in the wiring or connector to the remote control for the auxiliary heater (CT/CT-R).