Removing and installing charge air cooler: Audi A6 C5 (AEB, AFB, AFN, AGU, …)
Step-by-step removing and installing charge air cooler for the Audi A6 C5: 26 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 C5 (4B)
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- Use a magnet to take out the bolt if necessary.
- Hose connections and hoses for charge air system must be free of oil and grease before assembly. Do NOT use lubricant.Secure all hose connections with the correct type of hose clips (same as original equipment) Parts catalogue.
🔧 Engine codes this applies to
📐 30 workshop diagrams for AEB
Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.
📋 Procedure
- Remove both front wheels.
- Release fasteners (1 … 4) and take off noise insulation.
- Remove front bumper 63.
- Move electrical wiring harness at top of both air ducts clear to one side.
- Remove air ducts (1) at front of both charge air coolers.
- Remove air cleaner housing .
- Unscrew bolts (arrows) and remove air duct from lock carrier.
- Remove all electrical connectors from the bracket (arrows).
- Remove bracket for electrical connectors.
- Remove bolts (1).
- Guide a long hexagon key (3) through recess and unscrew securing bolt at bottom of headlight housing (2). [Note: Use a magnet to take out the bolt if necessary.]
- Slide headlight slightly towards recess on wing (arrow 1) and then swivel out headlight (arrow 2).
- Unplug electrical connector.
- Detach headlight to front.
- Remove top air hose (arrows).
- Remove bottom air hose (arrows).
- Remove bolt (arrow).
- Remove bolts (arrows) and detach guide.
- Unscrew bolts (arrows) and remove support (1).
- Remove rear air duct (2).
- Unscrew bolt (arrow) and lift out charge air cooler. [Note: Hose connections and hoses for charge air system must be free of oil and grease before assembly. Do NOT use lubricant.Secure all hose connections with the correct type of hose clips (same as original equipment) Parts catalogue.]
- Install headlight (left-side) 94.
- Install front bumper 63.
- Install air cleaner housing .
- Fill up with coolant .
- Adjust headlights 94.
Ask TorqFix about your Audi AEB — 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 AEB — 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.