TorqFix

Filling with coolant — VW

Filling with coolant on VW: 28 steps, engines AVQ, AXW, AXX, BGU. What to remove, in what order, and what to check after.

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

28 steps 40 engine codes engine codes merged from 18 documented variants

🧭 Before you start

Fits: VW Golf VII (5G, 2012–2020)

  • Special tools named: VAS 6096, V.A.G 1274/8

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  • Exhaust air takes a slight quantity of coolant along with it; this should be collected.
  • If the needle does not reach the green zone, repeat the process.If the vacuum drops, check the cooling system for leaks.
  • Fill coolant up to "“max.”" mark.
  • Check warning lamps in dash panel insertKX2.
  • Make sure that warning label (4) is attached to coolant expansion tank. Attach a warning label as necessary Electronic Parts Catalogue (ETKA).

📋 Procedure

  1. Connect lower left coolant hose with plug-in connector (1, 2) to radiator for cooling circuit of high voltage system .
  2. Connect coolant hose with plug-in connector (1, 2) to high-voltage battery 1AX2.
  3. Fill coolant reservoir of VAS 6096 with at least 10 litres of pre-mixed coolant in correct mixture ratio:
  4. Screw adapter for cooling system testerV.A.G 1274/8 onto coolant expansion tank.
  5. Mount cooling system charge unitVAS 6096 on adapter V.A.G 1274/8.
AVQ? Steps differ between engine variants — check this job against your exact car before you commit to it. Check my car — free →
  1. Feed vent hose (1) into a small container (2). [Note: Exhaust air takes a slight quantity of coolant along with it; this should be collected.]
  2. Close valves (A) and (B) (turn lever transverse to direction of flow to do this).
  3. Connect hose (3) to compressed air.
  4. Open valve (B); turn lever in direction of flow to do this.
  5. Also briefly open valve (A) (turn lever in direction of flow to do this) so that hose on VAS 6096 coolant reservoir fills with coolant.
  6. Close valve (A) again.
  7. Leave valve (B) open for a further 2 minutes.
  8. Close valve (B). [Note: If the needle does not reach the green zone, repeat the process.If the vacuum drops, check the cooling system for leaks.]
  9. Pull off compressed air hose.
  10. Open valve (A).
  11. Remove cooling system charge unitVAS 6096 from coolant expansion tank.
  12. Fill coolant up to "“max.”" mark.
  13. Install noise insulation General body repairs, exterior66Noise insulation; Assembly overview - noise insulation.
  14. Install right underbody covers General body repairs, exterior66Underbody cover; Removing and installing underbody covers.
  15. Connect .
  16. Select following functions.
  17. Check coolant level.
  18. Fill more coolant if necessary.
  19. Switch ignition on.
  20. Check warning lamps in dash panel insertKX2.
  21. Guide anti-tamper seal (1)Electronic Parts Catalogue through hole in filler cap (3) and in coolant hose connection (2).
  22. Close anti-tamper seal (1).
  23. Make sure that warning label (4) is attached to coolant expansion tank. Attach a warning label as necessary Electronic Parts Catalogue.

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.