Removing and installing thermostat housing with map-controlled engine cooling thermostat F265 — AUDI
Removing and installing thermostat housing with map-controlled engine cooling thermostat F265 on Audi: 17 steps, engines ALT, ALZ, AMB, AVJ.
Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: Audi A4 Cabriolet B6/B7 (8H), Audi A4 B6/B7 (8E)
- Opens: coolant
- Renewed: o-rings
Don't miss
- Renew O-rings. Secure all hose connections with the correct type of hose clips (same as original equipment) Parts catalogue.
📐 7 workshop diagrams for ALT
Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.
📋 Procedure
- ⚠ Observe notes on procedure for disconnecting the battery Electrical system27. — Disconnect earth wire at battery with ignition switched off.
- Drain off coolant .
- Remove intake manifold 24.
- Remove poly V-belt .
- Remove alternator Electrical system27
- Remove coolant pipe (small) .
- Unplug electrical connector (5).
- Detach coolant hoses (1) and (4).
- Unscrew bolts (2) and (3) and detach thermostat housing.
- Remove bolts (1).
- Remove the thermostat (2) with O-ring (3) from the thermostat housing (4). [Note: Renew O-rings. Secure all hose connections with the correct type of hose clips (same as original equipment) Parts catalogue.]
- Install coolant pipe (small) .
- Install alternator Electrical system27
- Install poly V-belt .
- Install intake manifold 24.
- Observe notes on procedures required after connecting battery Electrical system27.
- Fill cooling system .
Ask TorqFix about your Audi ALT — 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 ALT — 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.