Cooling System, Checking For Leaks: Procedure: Notes
WARNING: This page is about a different car, the 2018 Audi S6, 2017 Audi S6, and 2016 Audi S6. However, it is still accessible from the selected car via links, so may be relevant.
- Engine at operating temperature.
WARNING:
The cooling system is under pressure when the engine is warm. 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.
-- Open the coolant reservoir cap -arrow-.
-- Position the :VAG1274B with the :VAG1274/8 on the coolant reservoir.
-- Generate approximately 1 bar (14.5 psi) pressure using the cooling system tester hand pump.
-- If pressure falls, search for leaks and correct problem.