does the roof open a bit and then stop? then see if you can open it all the way by pressing with your hand. if u nudge it on and open it, then the repair will take about 10 mins. find a plastic piece on each side with a screw holding it down, take those off and find the long cables running. pull those cables out, and then install new cables and the updated plastic pieces with 2 screws. you're done!

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Current cars:
2001 MB E55 AMG
2003 Honda S2000
2000 Honda CRV

Gone but not forgotten:
2004 BMW 325i 5sp sport
1999 BMW 540i sport
1997 MB E420
1995 BMW M3 coupe