A8L Quattro Sedan W12-6.0L (BSB) (2005)
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Wrong Gas-filled strut installed.
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Trunk lid drive unit does not provide enough torque for opening the trunk (particularly in subzero temperatures), solenoid clutch in the drive slips
through.
(see Service solution below).
Concern 3 may be caused by:
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The battery energy manager (BEM) which is on closed-circuit current stage 2 or higher (this prevents the comfort control unit from activating the
drive unit).
(Refer to Service solution to Concern 3).
Concern 4 may be caused:
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When opening/closing the trunk lid the customer has used his/her hand as well (adding too much pressure when opening or closing), but the external
force recognition needs about 1 - 1.5 seconds to release the drive coupling. During this time the trunk lid/hinge may bend.
(Refer to Service solution to Concern 4).
Service solution to Concerns 1 and 2:
Tip:
To speed up the repair process, limit loaner expenses and save the customer time, please order and paint hinges prior to the scheduled appointment.
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After paint on hinges has cured, lubricate hinges at the hinge joints (arrows) with universal oil spray Part No. G 000 115 A2.
1.
For all VINs:
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Interrogate DTC memory and complete any entries under 46 - central comfort system and 61 - energy manager (which may be the cause for
problems with the automatic trunk lid).
2a.
For Vehicles to VIN:4E_5N013028:
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If vehicle does not have new style hinges with appendix "F" from previous repair, install trunk lid hinges (with stainless steel hinge pins) Part
No: 4E0 827 299 F (left) Part No: 4E0 827 300 F (right).
2b.
For Vehicles from VIN 4E_5N013028 to VIN 4E_6N006915: