DTC P1178 Mercedes-Benz
Gauge Control Module Lost Communication With ACC Unit (ACC message)
Gauge Control Module Lost Communication With ACC Unit (ACC message)
Description
Poor communication between the Gauge Control Module and ACC Unit. NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A. If the HDS does not communicate with the ACC unit, the ACC indicator stay on, and no ACC DTCs are stored, go to symptom troubleshooting for ACC indicator does not go off, and no DTCs are stored.
Video Guide
Diagnostic Info
- DTC Code: P1178
- Brand: Mercedes-Benz