masterphone24

Hi guys,
I bought my clk 230k 2 months ago with a sunroof problem, but the summer is coming and i really want to fix this...
I've made a video for explaining the problem.

Here is the video:

I don't know what to do, dissolder and change the relay or it's another problem? I have poor knowledge of cars (and of english haha) but i'm not dumb and i love DIY and cheap homemade fixes

I hope you will help me to fix it, it would be so nice!

Thank you