I have a W220 S500 02/11 (facelift) with keyless go.
Currently when touching any of the handles or pushing the unlock button, the car unlocks all doors.

I'm not sure what have I done, but before (in summer) the car was only unlocking the driver door when I touched the driver's door handle or pushed the button, and it unlocked all 4 doors when I touched any of the other handles.

How can I change it back to only unlock the driver door, as I live in an unsafe place, and it saved me already once since summer...someone tried to jump in to the car on the other side while i was sitting in..

Can this be adjusted by the owner, or has to be done at the dealer?

RTFM

dont have it
anywhere available online?

There is a way to do it with the key and I think it is in the owners manual.

incredibly helpful and mature answer. you are a great role model for all other forum moderators across the globe. well done.


not so funny now, is it amdeutsch?

start here for online manuals:
http://www.mbusa.com/mercedes/herita...hnical_manuals

You can get a complete owners manual kit on E-Bay for a pretty good price.

press and hold your unlock button on your key fob until the red light blinks twice. That should do the trick.

Also, manual sources (electronic downloads and printed versions) are covered in the W220 S-Class Owners Start Here sticky at the top of the forum. Scroll down to post #36 and download the .pdf file - it's the way I am keeping it updated now.