Removing and installing coolant pipe (front left): Audi A3 (CDUC, CDUD, CGQB, CKVB, …)
Step-by-step removing and installing coolant pipe (front left) for the Audi A3: 18 steps. What to remove, in what order, and what to check after.
Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: Audi A3 (8V, 2012–2020)
- Opens: coolant
Don't miss
- Secure all hose connections with the correct type of hose clips (same as original equipment) Electronic parts catalogue.
- Risk of damage to engine due to cooling system being insufficiently filled up/bled.Only fill and bleed fuel system using . — Fill up with coolant .
🔧 Engine codes this applies to
📐 1 workshop diagram for CDUC
Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.
📋 Procedure
- Remove engine cover panel .
- Drain coolant .
- Remove bolts (1 and 3).
- Release fastener (arrow) and remove cover (2).
- Move coolant hose (2) clear.
- Release fasteners (arrows) and detach air duct (top section) (1).
- Remove bolt (arrow) on both sides.
- Unclip air duct (bottom section) (1) and detach.
- Lift retaining clip (1) and detach connection for coolant.
- Remove bolt (2).
- Release hose clips (arrows) and disconnect coolant hoses.
- Detach coolant pipe (front left).
- Lift retaining clip (1) and detach connection for coolant.
- Remove bolt (2).
- Release hose clips (arrows) and disconnect coolant hoses.
- Detach coolant pipe (front left). [Note: Secure all hose connections with the correct type of hose clips (same as original equipment) Electronic parts catalogue.]
- ⚠ Risk of damage to engine due to cooling system being insufficiently filled up/bled.Only fill and bleed fuel system using . — Fill up with coolant .
- Install engine cover panel .
Ask TorqFix about your Audi CDUC — it answers with the exact sequence for that engine and the workshop drawing for each step. First question is free after a 20-second sign-up, no card.
Ask about your Audi CDUC — free → or sign up free to see the drawingsOther AUDI procedures
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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.