Cooling System, Checking For Leaks: Notes

WARNING: This page is about a different variant/trim than selected.

Special Tools And Workshop Equipment Required

Procedure

Fig 1: Identifying Coolant Reservoir Cap

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

CAUTION:

The cooling system is under pressure when the engine is warm. There is a risk of scalding due to hot steam and hot coolant.

Scalding the skin and other parts of the body is possible.

- Wear safety gloves.

- Wear protective eyewear.

- Reduce the pressure by covering the coolant expansion tank cap with a cloth and carefully opening it.

-- Remove the coolant expansion tank cap -arrow-.

-- Position the :VAG1274B with the :VAG1274/8 on the coolant expansion tank.

Fig 2: Cooling System Tester V.A.G 1274 Connected To Coolant Reservoir

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Generate approximately 1 bar (14.5 psi) pressure using the cooling system tester hand pump.

-- If the pressure falls, search for leaks and correct the malfunction.