Cooling System, Checking For Coolant Leaks: Notes
WARNING: This page is about a different car, the 2008 Volkswagen R32. However, it is still accessible from the selected car via links, so may be relevant.
Special tools and workshop equipment required
- Cooling system tester VAG 1274
- Adapter VAG 1274/8
- Adapter VAG 1274/9
Test Conditions
- Engine at operating temperature.
Test Sequence
WARNING:
Hot steam may escape when opening the expansion tank cap. Wear protective goggles and protective clothing to prevent damage to your eyes and from scalding. Cover the cap with a cloth and open very carefully.
-- Open the cap of the coolant expansion tank.
-- Install the VAG 1274 with the VAG 1274/8 to the expansion tank.
Fig 1: Identifying Cooling System Tester V.A.G 1274 And Adapter V.A.G 1274/8 Attached To Expansion Tank
-- Generate a positive pressure of approximately 1.0 bar using the VAG 1274.
If the pressure drops:
-- Search for leaking areas and repair the malfunction.