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.
Overview - Navigation System, MMI Navigation, 7UF
7UF - Navigation
Information Electronics Control Module 1 -J794- with integrated CD player/SD memory card reader/navigation system in the glove compartment
- SD card with navigation data
- Front Information Display Control Head -J685-, 7 inch display, in the center of the instrument panel
- Multimedia System Control Head -E380- in the center console, UJ0
- External Audio Source Connection -R199- in the center console storage compartment, USB charging, AUX IN, UE4
- Digital Sound System Control Module -J525- on the left rear side of the luggage compartment, 9VS only
- Sound systems: Audi sound system/Bang & Olufsen Sound System, 9VD/9VS
- Radio -R- integrated in the Information Electronics Control Module 1 -J794-, I8S
- Video input for rearview camera system, KA2
- Bluetooth Hands-Free Calling, 9ZX
- Voice recognition system, QH1
Optional
- Digital Radio -R147- integrated in the Information Electronics Control Module 1 -J794-, only Europe/Rest of World and QV3
- Radio System, Satellite -R146- integrated in the Information Electronics Control Module 1 -J794-, only USA and QV3
- External Audio Source Connection -R199- in center console storage compartment, USB (quantity: 2), AUX IN, ASI, UI2/UE7
- Audi phone box, 9ZE
- Audi phone box/Audi connect, 9ZE/EL3
- Multifunction Steering Wheel
ASI - Audi Smartphone Interface
- GPS Antenna -R50-
- In the Roof Antenna -R216-, Coupe/Sportback
- In the convertible top compartment cover, Cabriolet
- Front Information Display Control Head -J685-, Display in Center of the Instrument Panel
- Multimedia System Control Head -E380- in the Center Console
- CAN Bus
- Information Electronics Control Module 1 -J794- in the Glove Compartment
- Telephone Baseplate -R126- /External Audio Source Connection -R199- in the Center Console Storage Compartment
- MOST Bus
- Digital Sound System Control Module -J525- In Luggage Compartment on Left Rear Side
- TV Tuner -R78- In the Right Rear of the Luggage Compartment
- Microphone Unit In Front Roof Module -R164- in the Front Interior Lamp -W1-
Fault Finding is performed using the "Guided Fault Finding" on the Vehicle Diagnostic Tester.
Antenna wires, repairing. Refer to ANTENNA WIRES, REPAIRING .
Notes on MOST Bus
The optical data bus "MOST bus" is used in addition to the CAN bus.
A fiber-optic cable is used. Fiber optic cables are routed inside corrugated tubes for protection.
Replace the complete fiber-optic cable if possible.
The front surface of the connectors must not be contaminated.
If disconnecting the connectors: Attach the Fiber-Optic Repair Set - Connector Protective Caps: VAS6223/9 .
When routing fiber-optic cables, make sure not to go below the minimum bending radius of 25 mm. Do not crush or kink the fiber-optic cables.
Repairing fiber-optic cables. Refer to GENERAL REPAIR 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.