11 36 655 Removing and installing/replacing both solenoid valves (N16)

IMPORTANT: Always check that the solenoid valves are clean during removal and installation.
Possible malfunction if there is dirt contamination in the valves:

Irregular operation.
OBD fault entry.
Exhaust emission behavior.
Low engine performance.

Necessary preliminary tasks:

Remove ACOUSTIC COVER

Disconnect plug connection (3) from intake solenoid valve.

Release screw (1).

Remove solenoid valve (2) for intake side.

Fig 1: Identifying Solenoid Valve, Plug Connection And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connection for exhaust solenoid valve.

Release screw (2).

IMPORTANT: Do not use a tool to lever out solenoid valve (1).
A tight fit at the solenoid valve or deformation caused by incorrect removal will result in solenoid valve failure.

Fig 2: Identifying Solenoid Valve And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Remove solenoid valve (1) for exhaust side.

Installation note:

Replace sealing rings on solenoid valves.

Fig 3: Identifying Sealing Rings On Solenoid Valves

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Check function of Digital Engine Electronics.