Removing and installing operating and display unit (Climatronic control unit J255) — AUDI
Removing and installing operating and display unit (Climatronic control unit J255) on Audi: 11 steps.
Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: Audi Q3 (8U, 2011–2018); platform code 84
📋 Procedure
- If the operating unit (Climatronic control unit J255) is renewed, select "“Replace control unit”" ("“Guided Fault Finding”" or "“Guided Functions”").
- Observe general notes .
- Engage front-end hook3370 at operating unit (1) from top, as shown in illustration.
- Carefully release operating unit from centre console (arrows).
- Unplug electrical connectors. [Note: Should the operating unit (1) (J255) become tilted and stuck in the centre console mounting while you are trying to remove it (arrows B), apply hook T40207 from below at openings (arrows A), as shown, and also pull at bottom carefully to release unit.]
- When renewing the operating unit (Climatronic control unit J255), take care to select the correct version Electronic parts catalogue.
- Perform/check coding.
- Perform basic setting.
- Read out event memory (and eliminate the cause of any entries displayed).
- Check adaption.
- Perform final control diagnosis if applicable.
Other AUDI procedures
- Removing and installing toothed belt – Audi · 56 torque figures
- Removing engine – Audi A8 D3 · 41 torque figures
- Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
- Installing engine – Audi A8 D4 · 36 torque figures
- Removing and installing camshaft timing chain · 29 torque figures
- Testing ignition coils
- Checking ignition coils
- Removing cylinder head -engine codes AAD, ABB-
- Draining off and topping up coolant
- Installing exhaust system stress-free - vehicles with front-wheel drive
Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.