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Removing and installing coolant pipes (left-side) - engine codes CUKB, CXUA — AUDI

Removing and installing coolant pipes (left-side) - engine codes CUKB, CXUA on Audi: 13 steps, engines CJZA, CMBA, CPTA, CSSA.

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

13 steps 12 engine codes

🧭 Before you start

Fits: Audi A3 (8V, 2012–2020); platform code 85

Don't miss

  • Secure all hose connections with the correct type of hose clips (same as original equipment) Electronic parts catalogue.
  • High voltage can cause fatal injury.Danger of severe or fatal injuries from electric shock.The high-voltage system must be re-energised by a "“high-voltage technician”". — Re-energise high-voltage system .

🔧 Engine codes this applies to

📋 Procedure

  1. ⚠ High voltage can cause fatal injury.Danger of severe or fatal injuries from electric shock.The high-voltage system must be de-energised by a "“high-voltage technician”".Work on the de-energised high-voltage system may only be performed by an "“electrically instructed person”". — De-energise high-voltage system .
  2. Remove radiator cowl .
  3. Remove coolant pipes (left-side) for high-voltage cooling system .
  4. Remove nut (arrow) and move earth wire clear.
  5. Remove bolt (arrow) for coolant pipes (left-side).
CJZA? Steps differ between engine variants — check this job against your exact car before you commit to it. Check my car — free →
  1. Release hose clips (1, 2) and disconnect coolant hoses.
  2. Release hose clips (1, 2) and detach coolant hoses from coolant pipes (left-side).
  3. Release hose clips (1, 2, 3) and disconnect coolant hoses.
  4. Remove bolt (4), move coolant pipes (left-side) clear and detach. [Note: Secure all hose connections with the correct type of hose clips (same as original equipment) Electronic parts catalogue.]
  5. Install coolant pipes (left-side) for high-voltage cooling system .
  6. Install radiator cowl .
  7. ⚠ High voltage can cause fatal injury.Danger of severe or fatal injuries from electric shock.The high-voltage system must be re-energised by a "“high-voltage technician”". — Re-energise high-voltage system .
  8. Check coolant level .

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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.