A8L V8-4.2L (BFM) (2004)
Trunk / Liftgate Motor: All Technical Service Bulletins
Service
Description of concerns:
1.
Trunk lid doesn't fully close, reverses shortly before closing and opens again.
2.
Trunk lid doesn't fully open / lifts up slightly, reverses and closes again.
3.
Drive unit for automatic trunk lid operation sporadically (depending on the battery loading condition) fails to respond to the outside soft-touch
switch [middle button on vehicle key or button in door trim panel or trunk lid trim (mainly when engine is OFF)]
4.
Trunk lid hinge bent, lid adjustment no longer correct, lid protrudes over right side panel.
Tip:
Parts Information
Part numbers listed in this bulletin are for reference only. Always check with your Parts Dept. for the latest parts information.
Concern 1 may be caused by:
^
Trunk lid hinge stiff (corrosion in hinge joints).
^
Trunk lid adjustment incorrect.
^
Drop height not sufficient to operate the micro switch in trunk lid (clutch in drive is released too late, drop speed too low).
^
Wrong Gas-filled strut installed, power latching faulty.
^
Spring-loaded pins in stop buffers reducing drop speed.
(Refer to Service solution to Concerns 1 and 2)
Concern 2 may be caused by:
^
Trunk lid hinge is stiff (corrosion in the hinge joints).