Rear Vent Air Guide Slots, Sealing
This air guide is attached to the air outlet openings of the A/C unit. There are slits inside the air guide. If the door position is incorrect, especially on vehicles with the "Convenience" A/C system, whistling noise can come from these slits. The upper slits are covered with tape during production (running change from February 2009).
-- Cover the upper center console to prevent damage.
-- Remove the Radio -R- (refer to Radio -R-, REMOVING AND INSTALLING, MMI )/Multimedia System Control Head -E380- (refer to Multimedia System Control Head -E380-, REMOVING AND INSTALLING ).
-- Remove the Climatronic Control Module -J255- A/C display and control head. Refer to DISPLAY AND CONTROL HEAD, REMOVING AND INSTALLING .
-- If equipped, remove the Front Information Display Control Head Control Module -J523-.
-- Reach into the opening in the center console and cover both slits at the top -A- of the air guide -C- with adhesive tape -B- (approximately 2 cm x 4 cm, made of air-tight material).
The slots -A- are covered by the brace -D-.
Cut out, for example, two adhesive strips -B- from the insulation (replacement part number 8E0 260 329) .