Pressure Relief Valve in Cap, Checking
WARNING: This page is about a different car, the 2018 Audi Q3 Quattro, 2018 Audi Q3, 2017 Audi Q3 Quattro, and 2017 Audi Q3. However, it is still accessible from the selected car via links, so may be relevant.
-- Position the :VAG1274B with the :VAG1274/9 on the cap.
-- Generate pressure with the cooling system tester hand pump.
Blue Cap
- 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 open as specified, replace the cap.
Black Cap
- The pressure release valve must open at 1.6 to 1.8 bar (23.2 to 26.1 psi).
-- If pressure relief valve does not open as specified, replace the cap.