Hi,
In general for that era Mercedes-Benz, the fuse box is located in the upper right hand or driver side engine compartment in a sealed box with clasps. It will be located near the brake fluid reservoir.
If you are looking at this picture (from the front of the car with the hood up), it should look familiar to your car. You will see the black box in the upper right corner of the photo, which is right in front of the driver side. This is your fuse box.
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