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Digital Sound System Control Module, Removing And Installing: Removing:

The amplifier and the Digital Sound System Control Module -J525- -1- are inside the luggage compartment behind the left side trim panel.

GWWN91-11785Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

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

Connect the Vehicle Diagnostic Tester to do this.

Perform the Following Steps:

-- Turn off the ignition and all electrical equipment.

-- Remove the left side trim panel. Refer to LUGGAGE COMPARTMENT TRIM PANELS .

Vehicles with Rear Heater and A/C Unit

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-- Remove the noise insulation foam piece -1-.

-- Remove the bolts -arrows- from the heater and A/C Unit.

GWWN91-11786Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Move the heater and A/C Unit in direction of -arrow-. The wire connections and hoses remain connected.

GWWN91-11787Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Continued for all vehicles

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-- Remove the bolts -arrows-.

-- Remove the Digital Sound System Control Module -J525- and mount.

-- Disconnect the connector from the amplifier.

-- On the "RNS 850" versions, install the Fiber-Optic Repair Set - Connector Protective Caps:VAS6223/9  on the fiber-optic cable pulled off the Digital Sound System Control Module -J525-.

NOTE:

Fiber-Optic Cable Is Very Delicate!

The Fiber-Optic Cable Must Not Be Kinked Or Significantly Bent!

The bending radius must not be less than 25 mm.

A kinked fiber-optic cable is no longer usable, data transfer via kinked fiber-optic cable is faulty!

Please do not remove the protective caps from the ends of the fiber-optic cable until the fiber-optic cable is connected to the intended unit.