Functional description

WARNING: This page does not describe the selected car, but rather 45 other vehicles, including the 2016 BMW M5, 2016 BMW 550i xDrive, 2016 BMW 550i, 2016 BMW 535i xDrive, and 2016 BMW 535i. However, it is still accessible from the selected car via links, so may be relevant.

The engine control activates the electric changeover valve. This switches the partial vacuum in the system through to the partial-vacuum canister. The partial vacuum applied opens the bypass flap. The partial vacuum applied opens the bypass flap. On ventilation of the diaphragm canister (vacuum system depressurized), the bypass flap is closed by a spring.

Fig 1: Identifying Electric Changeover Valve, Bypass Flap And Exhaust-Gas Recirculation Cooler

Courtesy of BMW OF NORTH AMERICA, INC.

Item	Explanation
1	two-pin plug connection
2	Electric changeover valve exhaust flap
3	EGR cooler
4	Vacuum unit