Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
11 36 655 Removing and installing/replacing both solenoid valves (N55)
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.
Disconnect plug connection (1) on VANOS intake solenoid valve.
Disconnect plug connection (2) on VANOS exhaust solenoid valve.
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 .
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.
Remove O-ring (2).
Remove support ring (1).
Installation note:
Replace support and O-rings.
Assemble engine.
Check function of Digital Engine Electronics.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.