Position switches for the vario roof can fail, causing the roof to stop in the process of opening or closing.Google+
Car Problem Reports
Mercedes-Benz SLK320 Roof won't open/close correctly
Mercedes-Benz SLK320 Problem
Average Mileage: 60,000 mi (27,000 mi - 89,000 mi)
Visitor, 2001 Mercedes-Benz SLK320, 64,000 mi
Pull in driveway, starting putting the power top up it was closing very slowly then stopped. I do believe it was hydraulic fuel that came out of the back quarter panel.
Visitor, 2001 Mercedes-Benz SLK320, 89,000 mi
roof raises and then comes to a stop about a foot from closed position,slows to a stop and wont complete closing cycle. can reverse the switch and roof goes into the open position in trunk and everything works just fine as far as closing in open position.Great until it rains.would like any advice, probably end up at dealership for what I would assume an expensive repair.
Roof will not rise