Cooling System, Checking For Leaks: Notes
WARNING: This page is about a different car, the 2016 Volkswagen Touareg and 2015 Volkswagen Touareg. However, it is still accessible from the selected car via links, so may be relevant.
Special tools and workshop equipment required
- Cooling System Tester: VAG1274B
- Cooling System Tester - Adapter: VAG1274/8
- Cooling System Tester - Adapter: VAG1274/9
Procedure
- Engine at operating temperature.
WARNING:
Risk of scalding due to hot steam and hot coolant.
- The coolant system is under pressure when the engine is warm.
- Reduce pressure by covering coolant reservoir cap with a cloth and carefully opening.
-- Open the coolant reservoir cap.
-- Position the Cooling System Tester: VAG1274B with the Cooling System Tester - Adapter: VAG1274/8 on the coolant reservoir.
Fig 1: Identifying Cooling System Tester V.A.G 1274 B With Adapter V.A.G 1274/8 Installed On Coolant Expansion Tank
-- Generate approximately 1.0 bar (14.5 psi) pressure using the cooling system tester hand pump.
-- If pressure falls, search for leaks and correct problem.