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.

Fig 1: Identifying Digital Sound System Control Module -J525- -1-, Installation Location

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-- 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

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-- 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

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-- 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-

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Continued for all vehicles

Fig 5: Identifying Bolts -Arrows-

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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.