Removing and installing front operating and display unit, Climatronic control unit J255 — AUDI

🧭 Before you start

Fits: Audi A8 D3 (4E, 2002–2010)

• Special tools named: VAS 5051

📋 Procedure

1. Interrogate the encoding and adaption of the front operating and display unit, Climatronic control unit J255 by way of the guided fault-finding "„Control unit replacement“" function (if the front operating and display unit, Climatronic control unit J255 is to be replaced) "Guided fault-finding" function of vehicle diagnostic, testing and information system VAS 5051.
2. Switch off ignition.
3. Remove the trim for the front dash panel centre section and the ashtray 68
4. Screw out the 2 bolts (A).
5. Remove the front operating and display unit, Climatronic control unit J255 from the centre console.

6. Release the fasteners of the connector (E) by pressing the retainer tabs (G) and unplug this connector.
7. Wait 30 s (to protect the electronics in the front operating and display unit, Climatronic control unit J255).
8. Release the fasteners of the connectors (A) to (D) by pressing the retainer tabs (G) and unplug the connectors.
9. Release and unplug the connector (F).
10. Interrogate the fault memory of the front operating and display unit, Climatronic control unit J255 and erase any faults displayed "Guided fault-finding" function of vehicle diagnostic, testing and information system VAS 5051.
11. Perform air conditioner basic setting, encoding, adaption and final control diagnosis "Guided fault-finding" function of vehicle diagnostic, testing and information system VAS 5051.

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