I have a 2000 CLK 430 convertible. Top goes down perfectly. Windows lower, top goes in compartment propertly, chime sounds. Going up all is fine until top latches in rear and I latch front. Then windows won't go up, button stays lit (does NOT flash) and no chime. Oh, and you can't open the trunk with the interor switch or key fob. Only open trunk with key (thanks to other posts for helping me figure that one out!) I am more mechanically inclined than most, and do most repairs myself, though I am no mechanic. Please help without sending me to the stealership!