Has anyone ever installed anything to use that feature to roll up the windows on a single key click, where you don't have to hold it.

I know that some alarm systems do that, but since the car already has a central window/sunroof closer it can be done much easier that the alarm system and with less messing with the wiring.

Thanks

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1993 400SEL (W140) 281K
1999 S500 (W140) 163K (Sold)
2002 S500 (W220) 72K
1999 S500 (W140) 88K
You cannot simultaneously prevent and prepare for war.
Albert Einstein (1879 - 1955)