Cooling System, Checking For Coolant Leaks: Procedure

WARNING: This page is about a different car, the 2016 Volkswagen Beetle, 2015 Volkswagen Beetle, 2014 Volkswagen Beetle, and 2013 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.