Necessary preliminary work

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Read out fault memory in DME control unit
Switch off ignition
Unlock hose on tank venting valve and disconnect
Remove left CHARGE AIR COOLER
Carefully press pipe to one side

NOTE: Solenoid valve (2) controls the intake adjuster.
Solenoid valve (4) controls the exhaust adjustment unit.

Unlock plug connections of solenoid valves (2 and 4) and disconnect.

Installation note:

Plug connections must snap audibly into place!

Fig 1: Identifying Solenoid Valves

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten screws (1 and 3).

Tightening torque 11 36 3AZ .

Pull out solenoid valves (2 and 4).

Installation note: