Radio/Stereo: Service and Repair

Radio

• Use the chapter for the individual unit when removing and installing.

"Sound System" radio system => [ Sound System ] Sound System.

"Premium Sound System" radio system => [ Premium Sound System ] Premium Sound System.

"Radio Navigation System with Multi-Function Display 2 with DVD drive" navigation system => [ Radio-Navigation System ] Radio-Navigation System.

Special tools, testers and auxiliary items required

• Trim removal wedge (3409)

Removing

Before starting repair work, perform the following:

- If necessary, remove CDs remaining in the unit => Operating instructions.

- Switch off ignition, switch off all electrical consumers and remove ignition key.

Now, perform the following work procedure:

- Using trim removal wedge (3409), carefully pry out cover of center console in area of - arrows - and remove cover.





- Disengage connector at center console cover - arrows - and remove.





- Remove bolts - arrows - on radio navigation system.





- Pull radio navigation system out of installation compartment far enough until harness connectors on rear side of radio navigation system are accessible.

- Press together the connector lock in direction of - arrows -.





- Then swing mounting bracket out in direction of - arrow - and disconnect harness connector.





- Disengage harness connectors - arrows - from antenna connections and disconnect them.





Installing

- Insert connectors to radio navigation system and engage them.

- Slide radio navigation system straight into instrument panel.

• While sliding in the radio navigation unit, under no circumstances press on the display or control buttons since the radio unit may be damaged by doing this.

- Secure radio navigation system with 4 bolts - arrows -.





- Reinstall cover for center console.

- If necessary, deactivate anti-theft coding:

• Sound System => [ Sound System, Electronic Anti-Theft System ] Sound System, Electronic Anti-Theft System.

• Premium Sound System and Dynaudio Sound system => [ Premium Sound System, Electronic Anti-Theft System ] Premium Sound System, Electronic Anti-Theft System.

• Radio-Navigation System => [ Radio-Navigation System, Electronic Anti-Theft System ] Radio-Navigation System, Electronic Anti-Theft System.

- Check radio navigation unit coding and recode if necessary.

Radio navigation unit coding, => Radio components, adapting, => [ Radio Components, Adapting ] Radio Components, Adapting.

OBD Function

The radio navigation system is equipped with On Board Diagnostic (OBD).

When performing fault-finding, use Vehicle Diagnosis, Testing and Information System (VAS 5051) or Vehicle Diagnosis and Service System (VAS 5052) in the function " Guided Fault Finding".