Removing and installing temperature sensor for rear intake air temperature G639 — AUDI

🧭 Before you start

Fits: Audi A8 D4 (4H, 2010–2017)

📋 Procedure

1. Remove driver and front passenger seat General body repairs, interior72Front seats; Removing and installing front seat.
2. Switch off ignition.
3. Remove the base plate of the centre console (A) and the insulating mat (B)General body repairs, interior68Centre console; Removing and installing centre console bracket.
4. ⚠ 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 rear air distribution housing (C)Removing and installing air intake box of heater and air conditioning unit.
5. Unplug connector (A).

6. Turn the sender (B) through 90° (arrow) and remove.
7. Check that seal (C) is not damaged and is seated correctly.
8. Re-install all components removed in reverse order.
9. Perform basic setting and final control diagnosis for the air conditioner (to check operation) 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.]
10. Interrogate the event recorder of the front air conditioner operating and display unit, Climatronic control unit J255 and erase any faults displayed in "“Guided Fault Finding”" mode.

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