Try giving the blower motor a spin with your hand while it is clipped in to the mount. I'm betting the motor will start to spin or work after you give it a little help to start.

When mine was out, I used a few drops of tranmission fluid on the bushings on the shaft on both sides of motor, just under the blower fins.

Check to make sure the motor brushes aren't worn or have "gunk" caked on.

__________________
Russell McMahon
Tulsa, OK
2001 CLK 320
1992 400se
1993 400e
2000 320ML