I've posted this question over at mbworld with very little advice other than "change your CC unit" or "replace the blower motor regulator". This morning was in the teens, thus very very cold. So I warmed my 86' 300E up, the usual procedure is that the blower will not spin until the car is warm and I have to kill it and start it back up for the motor to start spinning. Tried this today and nothing I would have toughed the cold out but the windshield was just icing up like crazy on the inside. I decided to let it warm up past the usual 15 min in hopes of success, 45min later I hop in and the motor is blowing....good to go!

Therefore I now believe this problem to be temperature dependent, from any of your guys experience/expertise what part in the blower circuit would be consistently faulty only during cold weather and progressively get worst in even colder weather? I hope this is not annoying you guys, I just have a BIG pet peeve about throwing parts at an issue without having a pretty solid idea of what is actually wrong because with my luck its never the "winning" part and my wallet ends up not talking to me for the next couple of days . I have also used the search function but nothing is close enough to adequately match my symptoms.

Thanks ahead of time guys!