When you check your 30 amp fuse, it's not a bad idea to actually remove the screws to see if the fuse is intact. I had an absolutely invisible break in mine.

If you don't want to remove it, set your controls and key to operate the fan at high speed, then simply bridge the 30A fuse from terminal to terminal and if the fan will now operate, the fuse is at fault. Be sure to use an insulated wire of a decent size (to handle the current) to do the bridging.

A $3.82 fuse is much better to buy than all the other parts that could fail!

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'76 240D-Sold
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'85 300 SD, 165K-Sold
'88 300 TE, 165K-Sold
'64 Porsche 356C Cabriolet- under restoration
'86 560SL 124K Miles-Sold
'94 320E Wagon, 74K Miles-128K Miles JUNKED
'06 E350 Wagon, 84K Miles
07 SL550, 14K Miles