C230 Blower motor was not functioning properly, as in not coming on at all. This started late fall 09. We accidently tapped the cover with feet while moving around on the passenger side and the blower came on. Without beating our otherwise nice condition interior to death, we came into the habit of tapping the cover to jump start the blower at random times. Kind of silly, I know. but it worked and the problem didnt happen consistently, sometimes never. The other day, the blower failed entirely.

From my success in the past by posting here, I hope to head in the most proficient direction on this asap. I've analyzed my MB Service Repair Manual disc so I have a venue of avenues to take from that, nothing seems to difficult, however...
I'm asking what is the most common, or most likely cause of this statistically, or from anyones experience.
I would liek to beging with the most common known possible source if possible. There are a ton of "bad connection', "corroded or overheated terminal or connection" yada yada. I will inspect all of the A/c-HEAT circuitry as shown in the scematics and that should be an obvious find "IF" that's the problem. Could it be so simple? Possibly.

Input, Input ???

Thanks in advace!
Christopher
Anchorage, AK