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

WARNING: This page is about a different car, the 2017 Volkswagen Touareg, 2016 Volkswagen Touareg, and 2015 Volkswagen Touareg. However, it is still accessible from the selected car via links, so may be relevant.

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

Fig 1: Identifying Digital Sound System Control Module -J525- -1-, Installation Location
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 SIDE TRIM PANELS, REMOVING AND INSTALLING .

Vehicles with Rear Heater and A/C Unit 

Fig 2: Identifying Noise Insulation Foam Piece
GWWN91-11784Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

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

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

Fig 3: Heater/Air Conditioner Housing And Bolts
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.

Fig 4: Move The Heat/Air Conditioner Housing In -Direction Of Arrow-
GWWN91-11787Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Continued for all vehicles 

Fig 5: Identifying Bolts -Arrows-
GWWN91-11788Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- 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.