Pressure Relief Valve In Cap, Checking
WARNING: This page is about a different car, the 2012 Audi S5, 2011 Audi S5, and 2010 Audi S5. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Connecting Connector Piece V.A.G 1274 B/1 To Cooling System Tester V.A.G 1274 B Using Connecting Hose
-- Attach V.A.G 1274 B with V.A.G 1274/9 to sealing cap.
-- Generate pressure with cooling system tester hand pump.
- The pressure release valve must open at 1.4 to 1.6 bar.
-- If pressure relief valve does not open as specified, replace cap.