11 36 655 Removing and installing/replacing both solenoid valves (N55)

IMPORTANT: On removing and installing the VANOS solenoid valve (intake) and VANOS solenoid valve (exhaust), adhere to conditions of absolute cleanliness.
Possible malfunction if there is dirt contamination in the valves:

Irregular operation
OBD fault entry
Exhaust gas emission characteristics.
Low engine performance

Necessary preliminary tasks

Remove ignition coil cover. See 12..... REMOVING AND INSTALLING/REPLACING IGNITION COIL COVER (N55) .

Disconnect plug connection (1) on VANOS intake solenoid valve.

Disconnect plug connection (2) on VANOS exhaust solenoid valve.

Fig 1: Identifying Intake & Exhaust Solenoid Valve Plug Connection

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Release screw (2).

Remove VANOS intake solenoid valve (1) with holder towards the front.

Release screw (3).

Move VANOS exhaust solenoid valve (4) with holder approx. 10 millimeters towards the front

Tightening torque: 11 36 3AZ .

Fig 2: Identifying VANOS Intake & Exhaust Solenoid Valve And Screw

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Turn the VANOS exhaust solenoid valve (1) approx. 90° in direction of arrow until it can be removed from the front on engine wiring harness.

Fig 3: Turning VANOS Exhaust Solenoid Valve

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Remove O-ring (2).

Remove support ring (1).

Installation note:

Replace support and O-rings.

Fig 4: Identifying Solenoid Valve O-Ring

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Assemble engine.

Check function of Digital Engine Electronics.