Variable Valve Timing Solenoid: Service and Repair

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 work:
- Remove acoustic cover







NOTE: Graphic shows intake valve.

Disconnect plug connection on solenoid valve (3).
Release screw (1).
Remove solenoid valve (2).







Installation note:
Replace sealing rings on solenoid valve.







Assemble engine.
Check function of DME.