11 36 655 Removing and installing/replacing both solenoid valves (N18)

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

NOTE: Illustration shows intake valve.

Disconnect plug connection on solenoid valve (3).

Release screw (1).

Remove solenoid valve (2).

Fig 1: Identifying Solenoid Valve, Plug Connection And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Replace sealing rings on solenoid valve.

Fig 2: Identifying Sealing Rings On Solenoid Valves

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Check function of DME.