Cooling System, Checking For Coolant Leaks: Procedure

WARNING: This page is about a different car, the 2016 Volkswagen Beetle, 2015 Volkswagen Beetle, and 2014 Volkswagen Beetle. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Coolant Reservoir Cap

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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.

-- Remove the cap -arrow- from the coolant reservoir.

-- Position the Cooling System Tester VAG 1274B with the adapter Cooling System Tester - Adapter VAG 1274/8 on the coolant reservoir.

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

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

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