LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Audi >> 2021 >> S8 >> Repair and Diagnosis >> Body & Frame >> Mirrors >> Communication >> 91 Communication >> Navigation System >> Overview - Navigation System
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Overview - Navigation System

MMI Navigation Plus, I8T+7UG

Optional

ASI - Audi Smartphone Interface

GWWA91-12915Courtesy of AUDI OF AMERICA, LLC
  1. Instrument Cluster Control Module -J285-, Audi virtual cockpit
  2. Front Information Display Control Head -J685- in center of the instrument panel
  3. DVD Player -R7- in glove compartment
  4. Front Information Display Control Head 2 -J1060-, in the front center console
  5. USB Distributor -R293- in the front center console storage compartment
  6. Mobile Device Charger 1 -J1146-, phone box, in the front center console storage compartment
  7. Information Electronics Control Module 1 -J794- behind the glove compartment
  8. TV Tuner -R78- in the right rear of the luggage compartment
  9. Digital Sound System Control Module -J525- in luggage compartment on left rear side

Fault Finding is performed using the "Guided Fault Finding"  on the Vehicle Diagnostic Tester.

Repairing Antenna Wires

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 surfaces of the connectors must not get dirty.

If disconnecting the connectors: Attach the Fiber-Optic Repair Set - Connector Protective Caps: VAS6223/9  .

Fig 1: Fiber-Optic Conductor Repair Set VAS 6223A
GWWW00-11495Courtesy of AUDI OF AMERICA, LLC

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.

Fiber-optic cable repair. Refer to FIBER-OPTIC CABLES, REPAIRING .