I got in to my SL this morning, and on starting, a seat belt light lit up and i get five long beeps, as a result the windows stop working, the indicators and the rol bar stop also. I looked in the fuse box and the fuse number 7 is blown, when i replace the fuse every thing is ok for 2 -3 mins and the fuse blows again and the light comes back on.

Any idea .... thanks james