Control unit
â–¶ How to fix
If fault codes have also been registered for the service brake module, check the wiring and connections between the control unit (A6) and the service brake module. Erase the fault code and switch off the power using the starter key. If the fault code recurs after the system is restarted, the control unit must be renewed.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
Incorrect or unreliable data.
Possible cause
Internal fault in the control unit.