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Removing and installing side radiator with radiator fan — AUDI

Removing and installing side radiator with radiator fan on Audi: 17 steps, engines BUJ, BYH, CMPA, CNDA.

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: platform code 42

  • Opens: coolant

Don't miss

  • Risk of damage to condenser, refrigerant lines and refrigerant hoses.Do NOT stretch, kink or bend refrigerant lines and hoses. — Remove bolts (arrows) and secure condenser to prevent it dropping.
  • Do not reuse coolant.

🔧 Engine codes this applies to

📋 Procedure

  1. ⚠ Hot steam/hot coolant can escape - risk of scalding.The cooling system is under pressure when the engine is hot.Cover filler cap on coolant expansion tank with a cloth and open carefully to dissipate pressure. — Open filler cap on coolant expansion tank.
  2. Remove front underbody cover (1)66.
  3. Remove bumper cover (front) 63.
  4. Unscrew bolts (arrows) and remove air duct.
  5. Detach electrical connector (1) at ambient temperature sensor G17.
BUJ? Steps differ between engine variants — check this job against your exact car before you commit to it. Check my car — free →
  1. Unscrew bolts (arrows) and remove air duct.
  2. Place drip tray for workshop hoistVAS 6208 under connection.
  3. Disconnect coolant hoses (1) and (2) from radiator and drain off coolant.
  4. ⚠ Risk of damage to condenser, refrigerant lines and refrigerant hoses.Do NOT stretch, kink or bend refrigerant lines and hoses. — Remove bolts (arrows) and secure condenser to prevent it dropping.
  5. Unplug electrical connector (1) for radiator fan and move clear.
  6. Remove bolts (arrows), detach bracket with radiator and move to side.
  7. Unscrew bolts (arrows) and remove radiator fan with radiator cowl. [Note: If there are slight impressions on the fins, refer to .Secure all hose connections with the correct type of hose clips (same as original equipment) Electronic parts catalogue.The coolant in the entire system must be changed if the radiator is renewed.]
  8. Fit coolant hoses and hose clips .
  9. Install condenser 87.
  10. Install bumper cover (front) 63.
  11. Install underbody cover (front) 66. [Note: Do not reuse coolant.]
  12. Fill up with coolant .

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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.