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

🧭 Before you start

Fits: Audi A6 C6 (4F, 2004–2011)

• Special tools named: VAS 5051

📋 Procedure

1. Interrogate encoding and adaption of operating and display unit, Climatronic control unit J255 by way of "“Control unit replacement”" function in guided fault-finding routine (if 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. [Note: Removal of the operating and display unit, Climatronic control unit J255 is the same for both the "“Convenience”" and "“Basic”" versions.Operating and display unit, Climatronic control unit J255(A) is held in position in centre console by way of 4 clips (E).As of the start of 2006, operating and display units, Climatronic control unit J255 with modified clips (A) at the top are to be gradually introduced (the clips at the bottom remain the same, version (B)). At the same time, use is to be made of dash panel centre sections with modified support bracket for upper clips of version (C). In the case of operating and display units, Climatronic control unit J255 fitted with clip (B) (friction-locked clip with an angle of approx. 120°, installed with the version fitted up to the start of 2006, trim colour pearl grey metallic), the operating and display unit can be removed without taking out the centre dash panel vent.In the case of operating and display units, Climatronic control unit J255 fitted with clip (C) (positive-locking clip with an angle of approx. 65°, installed with the version fitted as of the start of 2006, trim colour Nero), the operating and display unit can only be removed after taking out the centre dash panel vent General body repairs, interior68Dash panel. To enable the clips (C) to be unfastened, a slot (D) has been provided in the dash panel centre section in the area of the upper support brackets for each of the clips.] [Note: Operating and display units, Climatronic control unit J255 installed at the start of 2006 with "“pearl grey metallic”" trim are fitted at the top with friction-locked clips (B). In a transitional period however, use may also be made on certain components of positive-locking clips (C). With the introduction of operating and display units with "“Nero”" coloured trim, exclusive use will however be made of positive-locking clips (C).]
3. ⚠ The introduction of the positive-locking clips (C) (with an angle of approx. 65°) on the top of the operating and display unit is accompanied by the use of modified dash panel centre sections (can be recognised from a vertical slot (D) in area of upper support brackets). If an operating and display unit with clips (C) is fitted in a dash panel centre section without these slots (D), removal may only be possible after taking out the dash panel centre section (the positive-locking connection can only be released from the front by way of this slot). — Reach beneath the operating and display unit, Climatronic control unit J255(B) and carefully pull the operating and display unit, Climatronic control unit J255 out of the centre console (operating and display unit with "“pearl grey metallic”" trim). If it cannot be removed from the dash panel centre section, the dash panel centre vent must be taken out General body repairs, interior68Dash panel.
4. Remove dash panel centre vent (operating and display unit with "“Nero”" coloured trim) General body repairs, interior68Dash panel.
5. Use two small screwdrivers (A) to release the fasteners of the two upper clips (C) (by way of the slots in the dash panel centre section). Then reach beneath the operating and display unit, Climatronic control unit J255(B) and pull it carefully out of the centre console.

6. Reach beneath the operating and display unit, Climatronic control unit J255(A) and pull it carefully out of the centre console (operating and display unit with "“pearl grey metallic”" trim).
7. Release fasteners of connector (D) by pressing retainer tabs (F) and unplug connector.
8. Wait 30 s (to protect electronics in operating and display unit, Climatronic control unit J255).
9. Release and unplug connector (E).
10. Release fasteners of connectors (A) to (C) by pressing retainer tabs (F) and unplug connectors.

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