Pressure Relief Valve in Cap, Checking
WARNING: This page is about a different car, the 2015 Audi A7 Quattro, 2014 Audi A7 Quattro, 2013 Audi A7, and 2012 Audi A7. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Connecting Connector Piece VAG 1274 B/1 To Cooling System Tester VAG 1274 B Using Connecting Hose
-- Position the Cooling System Tester VAG 1274B with the adapter VAG 1274/9 on the 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 open as specified, replace cap.