There is a strip fuse, like a ribbon, in a small black rectangular box about 3/4" x 1 1/4" just in front of the main fuse box. There is a good chance that this may be the problem.
The fuse can look good and still be bad.

The random thing happened to one of my 124's along the way and that was the culprit.
You could try bridging it with a wire to determine good or bad fuse.

Fuses available at the dealer , very cheap.

Steve