Pressure Relief Valve in Cap, Checking
WARNING: This page is about a different car, the 2020 Volkswagen Atlas, 2019 Volkswagen Atlas, and 2018 Volkswagen Atlas. However, it is still accessible from the selected car via links, so may be relevant.
 Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.
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-- Position the : VAG1274B
with the : VAG1274/9
on the cap.
-- Generate pressure with the cooling system tester hand pump.
- 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.