Pressure Relief Valve in Cap, Checking
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 Audi S7, 2018 Audi RS 7, 2017 Audi S7, 2017 Audi RS 7, and 2016 Audi S7. However, it is still accessible from the selected car via links, so may be relevant.
Cap, Version 1:
-- Position the :VAG1274B with the :VAG1274/9 on the cap.
Blue Cap
-- Generate pressure with cooling system tester hand pump.
- The pressure release valve must open at 1.4 to 1.6 bar (20.30 to 23.20 psi).
-- If pressure relief valve does not react as specified, replace cap.
Black Cap
- The pressure release valve must open at 1.6 to 1.8 bar (23.2 to 26.1 psi).
-- If the pressure relief valve does not react as specified, replace the cap.
Cap, Version 2:
-- Position the :VAG1274B with the Adapter:VAG1274B/15 on the cap.
-- Generate approximately 2 bar pressure using the cooling system tester hand pump.
Blue Cap
- The pressure must lower to 1.6 to 1.4 bar and stay there.
-- If the pressure relief valve does not react as specified, replace the cap.
Black Cap
- The pressure must lower to 1.8 to 1.6 bar (26.1 psi to 23.2) and stay there.
-- If the pressure relief valve does not react as specified, replace the cap.