SL/R230: vario roof not operational
Sounds like you need to find another dealer. Check the fuses but other then that the quickest/easiest way to diagnose the roof will be with Star Diagnostic at a dealer. This is the diagnostic software the dealer uses to diagnose faults with the car. It can diagnose all the switches etc in the top without so much as removing a single panel.
If you are interested in diagnising the roof yourself this post will get you started:
https://mbworld.org/forums/sl-class-...e-all-way.html
more info regarding operation of the Vario Roof:
http://www.mercedestechstore.com/pdf...2001-24-02.pdf
Finally, post #2 in this thread has a great .pdf for diagnosis and operation of the Vario roof:
http://www.benzworld.org/forums/r230...ml#post3751772



