Preparations For Checking The Seat Bolster Adjuster For Leaks, From 09/2012

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Special tools and workshop equipment required

Pneumatic Repair Set :VAS6618A
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 .

Courtesy of AUDI OF AMERICA, LLC

Remove the backrest cover. Refer to BACKREST COVER, REMOVING AND INSTALLING, MULTI-CONTOUR SEAT .
Front seat released in the vehicle and folded forward with electrical harness connectors connected. Refer to FRONT SEAT, REMOVING AND INSTALLING .

NOTE:

To check, the pneumatic line to the seat bolster adjuster is not disconnected at the connection, but is disconnected by the described procedure. Refer to PNEUMATIC LINES, DISCONNECTING AND CONNECTING .

-- Disconnect the pneumatic lines -1 and 3- to the seat bolster inflation adjuster air cushions at the following points:

a - 30 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 the pneumatic line from the valve block 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 :VAS6618A .

To connect during the leak test, insert the pneumatic lines into the :VAS6618/2 from both sides -A arrows-.

Courtesy of AUDI OF AMERICA, LLC

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

In one of the test steps in the "Guided Fault Finding", you are prompted to disconnect the pneumatic lines from the valve block.

Courtesy of AUDI OF AMERICA, LLC

-- Before disconnecting, mark the pneumatic line assignments to the connections at the valve block using a waterproof permanent marker.

-- Disconnect the pneumatic lines -1 and 2- to the seat bolster inflation adjuster air cushions.

-- To do this, press the release mechanism -2- -arrow- and simultaneously remove the pneumatic line -1-.

Courtesy of AUDI OF AMERICA, LLC

-- 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 the connection on the valve block 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

-- Connect the pneumatic lines and check them with a final tug, whether the coupling is locked in correctly.