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Removing and installing exhaust gas recirculation cooler, "“single turbo engine”" — AUDI

Removing and installing exhaust gas recirculation cooler, "“single turbo engine”" on Audi: 17 steps, engines CAAA, CAAB, CAAC, CAAD.

Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.

17 steps 7 engine codes engine codes merged from 2 documented variants

🧭 Before you start

Fits: VW Transporter T6 (7F), VW Transporter T6 (7E)

  • Renewed: gaskets

Don't miss

  • Take note of the different bolt lengths for the connecting pipes and the exhaust gas recirculation cooler.
  • The bolt 1 at the bottom is difficult to reach. Use a mirror for removing and fitting.

🔧 Engine codes this applies to

📐 31 workshop diagrams for CAAA

Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.

Removing and installing exhaust gas recirculation cooler, "“single turbo engine”" — CAAA · diagram 1
Removing and installing exhaust gas recirculation cooler, "“single turbo engine”" — CAAA · diagram 2
Removing and installing exhaust gas recirculation cooler, "“single turbo engine”" — CAAA · diagram 3
Removing and installing exhaust gas recirculation cooler, "“single turbo engine”" — CAAA · diagram 4
Removing and installing exhaust gas recirculation cooler, "“single turbo engine”" — CAAA · diagram 5
Removing and installing exhaust gas recirculation cooler, "“single turbo engine”" — CAAA · diagram 6
Removing and installing exhaust gas recirculation cooler, "“single turbo engine”" — CAAA · diagram 7
Removing and installing exhaust gas recirculation cooler, "“single turbo engine”" — CAAA · diagram 8
+ 23 more diagrams

📋 Procedure

  1. Open screw-type clip (2) and remove hose (1).
  2. Release and pull off connector (1).
  3. Pull wiring harness (3) out of expansion tank (2).
  4. Unscrew bolts (4) of expansion tank (2) and lay expansion tank aside.
  5. Open screw type clip (2) and remove hose (1).
CAAA? Steps differ between engine variants — check this job against your exact car before you commit to it. Check my car — free →
  1. Clamp off coolant hose (2) with hose clip up to 25 mm3094.
  2. Remove clip (1) and detach coolant hose (2).
  3. Clamp off coolant hose (2) with hose clip up to 25 mm3094.
  4. Remove clip (3) and detach coolant hose (2). [Note: Take note of the different bolt lengths for the connecting pipes and the exhaust gas recirculation cooler.]
  5. Screw bolts (1) out of connecting pipe (4).
  6. Pull hose (1) off vacuum unit.
  7. Release and pull off connector (2).
  8. Unscrew nuts (2) from connecting pipe (3). Take care not damage exhaust temperature sender 1G235(1) in the process.
  9. Unscrew bolts (3) from exhaust gas recirculation cooler (2). [Note: The bolt 1 at the bottom is difficult to reach. Use a mirror for removing and fitting.]
  10. Unscrew bolts (1) from exhaust gas recirculation cooler (2).
  11. Remove exhaust gas recirculation cooler (2) upwards towards right. [Note: To avoid tension or warping, screw in all bolts only loosely at first, and then tighten.First, align the exhaust gas recirculation cooler and the connecting pipes to each other and fit the bolts by hand. Then, tighten the bolts of the exhaust gas recirculation cooler and then tighten the bolts for the connecting pipes.Bear in mind different bolt lengths for pipes.Only screw pipe bolts in loosely at first, then tighten.Renew gaskets and seals.]
  12. Checking coolant level and replenishing coolant .
Workshop diagrams

Ask TorqFix about your Audi CAAA — 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.

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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.

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Workshop data on this page last updated 20 Sep 2026.