General Information

Premium Sound System

• Replacement part number for radio navigation system is located on a sticker on the radio navigation system housing.

• If radio navigation system is replaced, always activate antitheft coding. Refer to => Owner's Manual. Give the new code number to the customer.

• If the antitheft code is not known, you can retrieve it via the known systems. You need the identification number of the radio navigation system for retrieval. It is on a sticker attached to the side of the radio unit. The identification number is also stamped in the material in the side of the radio navigation system.

• If a radio navigation system from one vehicle is to be installed in another vehicle, then always make sure that radio navigation systems of both vehicles have the same replacement part number. Otherwise navigation system will malfunction since the setting of the rotation angle sensor in radio navigation system does not match the vehicle.

• Before troubleshooting or servicing, the technicians must be familiar with the function and operation of the radio navigation system.

• Additional information, refer to => Owner's Manual and to 199Radio Navigation System.

• Antitheft coding is equipped with protection code number, refer to => Owner's Manual.

• When performing service work or fault finding, refer to => Vehicle Diagnosis, Testing and Information System (VAS 5051 ) or Vehicle Diagnosis and Service System (VAS 5052) in the function "Guided Fault Finding".

• For complete wiring diagrams, refer to.

• For proper function of the navigation system, rotation angle sensor in unit must be set corresponding to installation position of unit in the vehicle. Therefore, always note the replacement part number when replacing the unit. An incorrect installation causes malfunctions in the navigation system.

• When the battery is reconnected, check any affected system or component (radio, clock, comfort electrical connection etc.) according to the repair information and/or the operating instructions.

• By the use of magnetically adhered antennae on vehicle roof, there is the hazard that the compass module will malfunction due to magnetic influence and remaining magnetization of the vehicle roof. For complaints of inaccurate or faulty direction displays on the compass module, ask the customer whether a magnetically adhered antenna is being used before starting repair work.