Ok, update.
Checking out the levelling sensors and linkage:
Rear linkage moved freely as well as the sensor itself was moving, turning freely. Nothing to be seen in the connector - both sides.
Front sensor was very stiff in the sensor end - but linkages were moving freely.
All linkages and the linkage arms are whole.
So I ended up changing the sensor itself. China copy.... a bit stiff it too.
When I ordered the sensor, I removed the old one. And of course the warning light went on.
After changing the sensor in the front - the automatic levelling does still not work when the engine is started.
So, the thing I do not understand, is, why is there no fault codes? Its obviously a electric issue - or the motor/motors on the headlights are not working.