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.

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HOMESERVICE MANUALSAUDI2004A8REPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTENTERTAINMENT SYSTEMSCOMMUNICATION91 - COMMUNICATIONNAVIGATION SYSTEMNAVIGATION SYSTEM WITH CD DRIVE CONTROL MODULE J401 , REMOVING AND INSTALLING

2004 Audi A8

Navigation System with CD Drive Control Module J401 , removing and installing

2004 Audi A8SECTION Navigation System with CD Drive Control Module J401 , removing and installing

Special tools, testers and auxiliary items required

Fig 1: Identifying Special Tools - Radio Removal Tool T10057

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Radio removal tool T10057

Fig 2: Fiber Optic Plier Repair Set VAS 6223

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Fiber Optic Plier Repair Set VAS 6223
Protective Cap For Cable Connector VAS 6223/9

If control module is replaced, select "Replacement" function for appropriate control module in "Guided Fault-Finding" routine.

Use the Vehicle Diagnosis, Testing and Information System VAS 5051 to do so.

CAUTION:

Switch off all electrical components.
Switch off ignition and remove ignition key.

Removing

Open left luggage compartment storage bin.

Fig 3: Inserting Two Clips Of Radio Removal Tool T10057 Into Release Slots Of Navigation System With CD Drive Control Module J401

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Insert two clips of Radio Removal Tool T10057 into release slots of Navigation System with CD Drive Control Module J401 until they engage. Points on the grip eyelets of tool face outward.
Pull Navigation System with CD Drive Control Module J401 out of mounting frame.
Disconnect all connectors at Navigation System with CD Drive Control Module J401.

Fig 4: Fiber-Optic Cable Harness Connector And Protective Cap For Cable Connector VAS 6223/9

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Fit the Protective Cap For Cable Connector VAS 6223/9 - 1 - on to the MOST-Bus connector - 2 -.
Remove Radio Release Tool T10057 by pressing locking tabs on Navigation System with CD Drive Control Module J401.

Removing mounting frame

Fig 5: Removing Bolts To Separate Frame From Slide-In Slot

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove nut - 1 - (8 Nm) and bolt - 2 - (8 Nm).
Remove bolts - arrows - (3 Nm) to separate frame from slide-in slot.

Installing

Mounting frame:

Install in reverse order.

Control module:

Connect all harness connectors.
Slide Navigation System with CD Drive Control Module J401 in until it engages in mounting frame.

RENDER: 1.0x

NO RELATED

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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.