theogeor said:
I assume you have Liptronics ...
Wow, I've seen some typos before: Triptronics, Zenons etc
But "Liptronics", sounds like some of the proprietary electronics/hydraulics in a Fembot!
S's all had Litronics/xenons as standard. Although "auto levelling", that is only relative - they don't actually know where they are pointing, they have no "spirit-level" device etc.
The units need to be aligned in PDI (and therefore missed or I guess can lose alignment from trauma or loose securing bolts etc).
The units will need to be "zeroed" so the auto-levelling can move them from a predefined position.
This is theoretically "DIY", but would suggest you ask an OPC.
If you want to fiddle you need to get the low-beam setting to dip 1% on level ground. The adjustment method should be outlined in your manual under the bulb change section. The adjustment screws are accessible behind boot carpet.
If the light "moves" around on its own and you think they are loose you need to check the locating plates in the wings, remove lamp units as per manual with special key in tool kit.
If you are on doubt, ask OPC to check - they might even do it for free!