Removing and installing thermostat with hose connection: Audi A6 C6 (CANA, CANB, CANC, CAND, …)
Step-by-step removing and installing thermostat with hose connection for the Audi A6 C6: 10 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 A6 C6 (4F, 2004–2011)
- Opens: coolant
- Renewed: o-ring
Don't miss
- Fit new O-ring.Secure all hose connections with the correct type of hose clips (same as original equipment) Electronic parts catalogue.
📐 4 workshop diagrams for CANA
Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.
📋 Procedure
- Drain coolant .
- ⚠ If a used belt runs in the opposite direction when it is refitted, this can cause breakage.Before removing, mark direction of rotation of poly V-belt with chalk or felt-tip pen for re-installation. — Slacken poly V-belt by turning tensioner in clockwise direction (arrow) using socket Torx T 60T40087.
- Remove poly V-belt from tensioner and release tensioner.
- Remove pump for exhaust gas recirculation cooler V400.
- Release hose clip (1) and detach coolant hose.
- Unscrew bolts (arrows) and remove connection with thermostat. [Note: Fit new O-ring.Secure all hose connections with the correct type of hose clips (same as original equipment) Electronic parts catalogue.]
- Clean sealing surface.
- Install pump for exhaust gas recirculation cooler V400.
- Install poly V-belt .
- Fill up with coolant .
Ask TorqFix about your Audi CANA — 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 CANA — 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.