Removing and installing plenum chamber electronics box: Audi A6 C5
Step-by-step removing and installing plenum chamber electronics box for the Audi A6 C5: 17 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)
Don't miss
- (Arrows) can be ignored.
📋 Procedure
- Remove the wiper arms .
- ⚠ To stop the cowl panel grille (1) being torn on removal, apply a small quantity of soap solution to the transition between the windscreen and cowl panel grille and pull the cowl panel grille vertically upwards out of the fastening strip, starting at the edge of the windscreen. — Detach the clips (arrows) and remove the cowl panel grille (1).
- With ignition switched off, disconnect earth wire at battery:
- Screw out bolts (arrows).
- Take out cover for electronics box in plenum chamber.
- Use screwdriver to carefully prise off fastener (arrow).
- Lay aside engine control unit with connectors (1) and (2) connected. [Note: (Arrows) can be ignored.]
- If applicable, unplug connectors at altitude sender F96.
- If applicable, release catch (arrow) and lift off auxiliary relay carrier in electronics box.
- Unplug connectors on back of connector console.
- Pull engine wiring harness together with rubber grommet out of recess in plenum chamber electronics box.
- Unscrew the 2 nuts (A).
- Lift electronics box at rear until studs are free.
- Pull electronics box out of mount (B).
- When fitting seal (C), take care not to cover over body opening.
- Connect battery. Action to be taken:
- Adjust the wiper arms .
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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.