Mechanics

I JUST BOUGHT A MERCEDES COUPE. THE PANORMIC ROOF BLINDS OPEN AND CLOSE BUT I CAN'T GET THE SUN ROOF TO OPEN. I HOLD THE BUTTON ALL THE WAY UNTILL THE BLINDS FULLY OPEN. THEN I ATTEMPT TO OPEN THE ROOF AND JUST HEAR A THUMPING NOISE COMING FROM

2003 Mercedes Benz C320 • 123,000 miles

The blinds open and close normally I think. They open in stages. First they move open 2-3 inches and stop. Then I hit the open button again and they move another 2-3 inches. I repeat this until they are fully open. Then when I use this same button to open the roof I just hear a low "Clump!". I must say that the owners manual is 'very' vague about most of the features on this car.
Any suggestions would be greatly appreciated!

Best regards,

William Wilson
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Williamw9125
March 8, 2012.



This maybe how it operates. Call the dealer to get the proper oper.

Cadieman
Mar 8, 2012.