Removing and installing holder for control motor V110 and V299 — AUDI

🧭 Before you start

Set air distribution to the windscreen, switch off and strip the driver's lower dash area including the accelerator pedal module. Mark and remove V107, V299 and V110, unbolt the holder and free the harness. Check the flap linkages, refit the holder and route the harness away from moving parts. Refit the motors and trim, then run basic setting and clear the J255 event memory.

Fits: Audi A8 D4 (4H, 2010–2017)

Don't miss

• Set air distribution to the windscreen and wait for airflow before switching the ignition off.
• Mark each control motor and connector; they are identical and swapping them upsets flap control.
• Check flap actuating arms for proper operation and position before refitting the holder.
• Route wiring so it cannot touch moving flap components.
• Run basic setting in Guided Fault Finding and erase J255 faults afterwards.

Written for this job from the workshop steps below · TorqFix editorial.

📋 Procedure

1. Move driver's seat to rearmost position.
2. By way of the FRONT (defrost button) of the air conditioner front operating and display unit, Climatronic control unit J255, set the air distribution to the windscreen and wait until air emerges from the dash panel vents to the windscreen.
3. Switch off ignition.
4. Remove storage compartment beneath dash panel on driver side and corresponding brackets in area of centre console General body repairs, interior68Shelves/storage compartments/covers; Removing and installing driver side dash panel trim and General body repairs, interior68Centre console; Removing and installing centre console.
5. Remove left footwell vent (driver's side) .

6. Remove accelerator pedal module 20Throttle control; Exploded view - accelerator pedal module.
7. ⚠ The air conditioner will not function properly if control motors and/or the corresponding connectors are interchanged Overview of control motors of air conditioner.The control motors and connectors are identical. If these are incorrectly installed or connected, the corresponding flaps can no longer be properly matched and/or activated.Mark control motors and connectors clearly before detaching or removing to prevent incorrect installation. — Remove the defroster flap control motor V107Removing and installing defroster flap control motor V107.
8. Remove the left side vent control motor V299Removing and installing left side vent control motor V299.
9. Remove the left centre vent control motor V110Removing and installing left centre vent control motor V110.
10. Remove bolts (B).
11. Unfasten the wiring harness (C) from the holder (A).
12. Detach bracket (A).
13. Check the connecting elements and actuating arms to the various flaps (A), (B) and (C) for proper operation and correct installation position.
14. Fit the holder (A).
15. Insert the wiring harness (C) in the holder (A) such that it cannot come into contact with moving components.
16. Fit bolts (B).
17. Re-install the control motors removed in reverse order.
18. Lay the wiring to the various control motors such that it cannot come into contact with moving components.
19. Re-install all parts removed in reverse order.
20. Perform basic setting and final control diagnosis for the air conditioner in "“Guided Fault Finding”" mode. [Note: The control motors on this vehicle are equipped with electronics. A new control motor only learns its position at the air conditioning unit in the course of basic setting and can then be activated by the air conditioner front operating and display unit, Climatronic control unit J255 (all control motors are identical at present) in "“Guided Fault Finding”" mode.While you are performing the basic setting, the control motors are assigned and adapted in accordance with the series connection of the wiring. If the sequence is not as specified, the control motors will not be adapted properly and the flaps will not be controlled correctly Overview of control motors of air conditioner.]
21. Interrogate the event memory of J255 and erase any faults displayed in "“Guided Fault Finding”" mode.

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