Cooling System, Checking For Coolant Leaks: Notes

WARNING: This page is about a different car, the 2009 Audi TT and 2008 Audi TT. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Cooling System Tester V.A.G 1274 A
Adapter V.A.G 1274/8
Adapter V.A.G 1274/9

Procedure

Engine at operating temperature.

WARNING:

Risk of scalding due to hot steam and hot coolant.

When the engine is warm the cooling system is under pressure.
Reduce pressure by covering coolant reservoir cap with a cloth and carefully open.

-- Open coolant reservoir cap.

-- Position V.A.G 1274 A with V.A.G 1274/8 on coolant reservoir.

Fig 1: Attaching VAG1274 Cooling System Tester Together With VAG1274/8 Adapter To Coolant Expansion Tank

Courtesy of AUDI OF AMERICA, LLC

-- Generate approximately 1 bar pressure with cooling system tester hand pump.

-- If pressure falls, search for leaks and correct problem.