Preparations For Checking The Backrest Bolster Inflation Adjustment For Leaks, Through 08/2012
Special tools and workshop equipment required
- Pneumatic Repair Set :VAS6618A
- Vehicle Diagnostic Tester
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 .
- The backrest cover must be removed. Refer to BACKREST COVER, REMOVING AND INSTALLING, MULTI-CONTOUR SEAT .
-- Before disconnecting, mark the assignment of the pneumatic lines to each other using a waterproof permanent marker.
-- Disconnect pneumatic lines to the backrest 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 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 |
-- To connect, attach the :VAS6618/3 to the pneumatic lines.
To connect, insert the pneumatic lines into the :VAS6618/3 from both sides in direction of -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 in direction of -B arrows- and simultaneously remove pneumatic lines in direction of -C arrows-.
-- Connect pneumatic lines following the leak check. Refer to PNEUMATIC LINES, DISCONNECTING AND CONNECTING .