Overview - Navigation System, General Information

• The navigation system is available on vehicles with Ready4Nav (7Q4), Navigation packet (7T2) and MMI navigation plus (7T6).
• The navigation system is part of the Information Electronics Control Module 1 -J794- inside the instrument panel.
• The operation takes place through the device itself.
• On the Ready4Nav (7Q4), all components for the navigation are installed (Radio concert MOST with GPS Antenna -R50-). The SD memory card does not contain the navigation data.
• For the navigation packet (7T2), the navigation data is stored on an SD card.
• For the MMI navigation plus (7TG), the navigation data is stored on an internal hard drive disc (HDD).
• MMI Navigation Plus - Japan: The Chip Card Reader Control Module -J676- is located in the glove compartment and the Traffic Data Antenna -R173- is located on the windshield.

Perform the Fault Finding with the Vehicle Diagnostic Tester.

Repairing the antenna wires. Refer to ANTENNA WIRES, REPAIRING .