Pardon the intrusion, but I would like to piggy-back onto this thread for owners of newer cars (after '95-96). Newer cars apparently use accelerometers built in to the controller, rather than extension switches on the rear suspension. I have two controllers, My original one and a used replacement with known heritage and alleged correct functionality. In each case, I am left with a flashing roll bar switch (and an illuminated instrument cluster light). My soft-top button also does not illuminate as described at end of cycle or when first turning the key on (and switch is new from MB). SDS indicates faulty controller for which I think I have eliminated as cause by replacement (SDS also points to faulty switch for soft top, but it is new/has been replaced). Here is where it makes even less sense:
With both controllers, raising and lowering the soft top (and placement/removal of hard top) works flawlessly. with the original controller, the roll bar would stay lowered if it was lowered to begin with, and would lower/raise if the bar was up. This appears to correspond to how its function is described in the owners' manual. The replacement known-to-be-good controller behaves slightly differently. When raising/lowering the soft top, the roll bar will raise after the cycle is finished, regardless of its initial position. When placing the hard top, with both controllers the roll bar remains down after completion of placement/removal. Also, in each controller, regardless of the position of the windows initially, they raise when finishing the cycle of the tops, in either deployed/stowed, hard top or soft top.
The flashing roll bar lights can be extinguished by raising the roll bar a coupl'a inches and, of course, the roll bar lights do not flash with the bar in the fully upright position.
I have given up on this issue, and placed two small pieces of black tape on the switch and left the instrument cluster bulb out.