What does this button do? W213

[CaptainChaos]

What does the illuminated button shown below do?
Thanks.

 

[KillerHERTZ]

Converts the controls to the Left hand seat, so you can move it around without leaning across.

 

[CaptainChaos]

OK, thanks. Would never have thought of that!
I suppose it could be good for confusing the passenger...

 

[Greenboyslacker]

It is there purely for winding up the kids isn't it? I am not brave enough to do it when the wife is in.....