Repair of the radio, navigation and amplifier Mercedes-Benz C-Class S203

Repair of the radio, navigation and amplifier in Mercedes-Benz C-Class S203 covers, among other things, the Comand NTG2 (Harman Becker) unit fitted in the C-Class W203 range after 2004. Below we describe symptoms related to the navigation and drives in this system.

White screen instead of the map

When you press the NAVI button, a white screen appears, as if the system is trying to load data unsuccessfully, while the radio and CD player work properly. This symptom is linked to the map reader. In NTG2, the maps are read by a separate DVD drive, located outside the main unit, so before removal we determine which component should be sent.

Map position stays frozen

If the map is displayed but the car’s position does not update while driving, the cause may be the GPS antenna or the GPS module on the radio’s main board. With the unit itself we can only check the second possibility – we do not assess the antenna or its cable in the car.

Discs, display and enquiry

Faults in the main unit may also be indicated by:

• a CD ejected after a moment or a read error,
• a drive that will not accept or eject discs,
• white lines, dark patches or dead pixels on the screen.

Please attach a photo of the front of the unit and a description of the symptom to your enquiry. We provide an initial quote; after checking the module we confirm the exact price, and we begin the repair once you approve it. We do not repair Android replacements.