The Sunroof in our E300 got stuck in the closed position.

I tried to open it but it makes a tic tic tic kind of noise and I fear I may cause more dramas.

The motor seems to work but I am not sure what is wrong in there.

I tried the manual crank to open it but it is too heavy.

Has anybody ever gone through this?

Any help or advise please.

Thanks

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* 1991 W124 300D 480.000 kms Running on WVO
* 1991 W124 300D 230.000 kms Running on Diesel
* 1997 W210 E300 280.000 kms Running on Diesel