Cooling System, Checking For Leaks: Procedure

WARNING: This page is about a different car, the 2012 Audi S5, 2011 Audi S5, 2010 Audi S5, 2009 Audi S5, and 2008 Audi S5. However, it is still accessible from the selected car via links, so may be relevant.

Engine at operating temperature.

Fig 1: Coolant Reservoir for Audi Q5

Courtesy of AUDI OF AMERICA, LLC

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 :VAG1274B with the :VAG1274/8 on the coolant reservoir.

Fig 2: Connecting VAG 1274 B & VAG 1274/8 To Coolant Reservoir

Courtesy of AUDI OF AMERICA, LLC

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

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