Preparations For Checking The Seat Bolster Adjuster For Leaks, H O RBIGER MULTICONTOUR Seat

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Special tools and workshop equipment required

Pneumatic Repair Set VAS 6618 A
Vehicle Diagnostic Tester

NOTE:

When an appropriate entry is made in the event memory, you are prompted in "Guided Fault Finding" to perform a leak check using the Vehicle Diagnostic Tester.

Then the preparations for this leak test are described that must be carried out directly in the front seat.

For the connection diagram with assignment of the pneumatic lines to the air cushions, refer to CONNECTION DIAGRAM - PNEUMATIC SYSTEM .

Procedure

Fig 1: Pneumatic Lines

Courtesy of AUDI OF AMERICA, LLC

The backrest cover is removed. Refer to Removing and Removing .

-- Move the front seat all the way forward/up.

-- Carefully release the retainer -arrow- and disconnect the pneumatic lines -1- and -2-.

-- For checking in the "Guided Fault Finding", connect the air cushion and valve block connections in a diagonal sequence as follows:

Pneumatic line to the	at pneumatic line from the multi-contour seat control module to the
right air cushion for seat bolster inflation adjuster	left air cushion for seat bolster inflation adjuster
left air cushion for seat bolster inflation adjuster	right air cushion for seat bolster inflation adjuster

NOTE:

To connect the pneumatic lines, make an adapter hose from the Hose VAS 6618/5 and Connectors VAS 6618/6 and VAS 6618/7.

In one of the test steps in the "Guided Fault Finding", you are prompted to disconnect the pneumatic lines from the Front Passenger Multicontour Seat Control Module -J872- /e Driver Multicontour Seat Control Module -J873-.

Fig 2: Mark Assignment Of Pneumatic Lines

Courtesy of AUDI OF AMERICA, LLC

-- Before disconnecting, mark the assignment of the pneumatic lines to each other using a waterproof permanent marker.

-- Disconnect pneumatic lines to the seat bolster inflation adjuster air cushions at the following points (refer to PNEUMATIC LINES, DISCONNECTING AND CONNECTING ):

a - 40 mm

b - 40 mm

-- For checking in the "Guided Fault Finding", connect the air cushion and valve block connections in a diagonal sequence as follows:

Pneumatic line to the	at pneumatic line from the multi-contour seat control module to the
right air cushion for seat bolster inflation adjuster	left air cushion for seat bolster inflation adjuster
left air cushion for seat bolster inflation adjuster	right air cushion for seat bolster inflation adjuster

-- To connect, attach the Connecting Sleeves VAS 6618/3 to the pneumatic lines.

Fig 3: Attach The Connecting Sleeves

Courtesy of AUDI OF AMERICA, LLC

NOTE:

To connect, insert the pneumatic lines into the Connecting Sleeves VAS 6618/3 from both sides -A arrows-.

Because of the danger of leaks, do not place the connecting sleeves in a bend in the hose.

To release, push release rings -B arrows- and simultaneously remove pneumatic lines -C arrows-.

-- Connect pneumatic lines following the leak check. Refer to PNEUMATIC LINES, DISCONNECTING AND CONNECTING .