Backrest Bolster Inflation Adjuster, Removing And Installing, From 09/2012: Removing
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-- Remove the backrest cover with the backrest cushion. Refer to BACKREST COVER AND CUSHION, REMOVING AND INSTALLING, MULTI-CONTOUR SEAT FROM 09/2012 .
-- 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-.
-- Free up the pneumatic lines from the backrest bolster adjuster air cushions.
-- Remove bolt -1-, release lock -arrow-.