The information concerns:
3 Series (E90 / 91) Model Year: From July 2006
Z4 (E85) model year: from January 2006.
X3 (E83) model year: from September 2006
All models with engine code N52 / N54
The engine control panel indicator light is on
The car starts poorly
The vehicle is not running well
Error code: Adjustable camshaft
If one or more of the aforementioned defects are present on these vehicle models in conjunction with various VANOS error codes, it may be due to a stuck or hard-to-move solenoid valve of the VANOS system.
In this case, the solenoid valve must be checked and, if necessary, replaced.