TorqFix

Removing and installing tank for reducing agent — AUDI

Removing and installing tank for reducing agent on Audi: 18 steps, engines CUUB, CUUC, CUUD, CUUE. 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.

18 steps 15 engine codes engine codes merged from 2 documented variants

📋 Procedure

  1. Remove air filter housing .
  2. Remove front bumper cover General body repairs, exterior63Front bumper; Removing and installing bumper cover.
  3. Remove front left wheel housing liner General body repairs, exterior66Wheel housing liner; Removing and installing front wheel housing liner.
  4. Emptying tank for reducing agent .
  5. Seal all open connections using clean plugs from engine bung setVAS 6122.
CUUB? Steps differ between engine variants — check this job against your exact car before you commit to it. Check my car — free →
  1. Disconnect connectors (1).
  2. Press release tab (3).
  3. Pull off delivery line (2).
  4. Place engine and gearbox jackVAS 6931 equipped with a soft foam padding under tank for reducing agent (1) to support the tank.
  5. Remove nuts (1).
  6. Carefully lower tank for reducing agent (2) using engine and gearbox jackVAS 6931.
  7. Additionally support tank for reducing agent by hand while doing so.
  8. Ensure lines are secured properly by pulling.
  9. Check that all lines are clipped into tank for reducing agent.
  10. Connect .
  11. Switch ignition on.
  12. Adapt SCR system learnt values , 01 - Systems capable of self-diagnosis, 01 - Diesel direction injection and preglow system EDC 17, 01 - Engine electronics functions, 01 - Adapting SCR system learnt values.
  13. Follow further instructions displayed on .

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

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Workshop data on this page last updated 20 Sep 2026.