Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Navigation System Through 10.31.2008
The optical MOST bus links the navigation system into the MMI Infotainment.
The navigation system is available from equipment version "MMI basic plus Navigation".
With the "MMI basic plus Navigation" version, the navigation system with CD drive control module -J401- is located in the glove compartment and contains the radio -R- and the front information display control head control module -J523-.
In the "MMI" version, the Navigation System with CD Drive Control Module -J401- is located at the left rear of the luggage compartment.
All versions are operated via the Multimedia Control Head -E380-.
Fault finding is performed via "Guided Fault Finding" using the Vehicle Diagnostic Tester.
Repairing antenna wires, refer to General Information .
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.