Preparations For Checking The Backrest Bolster Inflation Adjustment For Leaks, From 09/2012

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Special tools and workshop equipment required

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 .

-- 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 backrest bolster 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

-- Free up the pneumatic lines.

-- 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 backrest bolster inflation adjuster	left air cushion for backrest bolster inflation adjuster
left air cushion for backrest bolster inflation adjuster	right air cushion for backrest bolster inflation adjuster

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