Anything to look for, fuse is ok, I am assuming this motor is buried in the dash?

 

could be water intrusion into the blower box by a clogged water drain under the windshield passenger side under the hood at the firewall. look inside the black grate and see if water is in there. the water spills into the cabin and onto the blower motor. there also used to be a recall on those S classes some years ago for ands updated wire harness to the blower from the fuse box. could also just be a bad blower motor regulator.

 

The drain was plugged a little bit, I am familiar with that issue, where is the blower motor located? and the blower regulator, thanks for the help...

 

under the passenger dash. remove the lower dash panel then remove the blower motor cover. the regulator is on the blower motor. you will need torx bits to remove both the covers and the regulator and the blower.

 

ok thanks, so does the dash piece just pop out or is there screws?

 

3 or 4 screws and the panel basically pulls down from the front. unhook the wire to the light and maybe the teleaid speaker. then youll see the blower motor case.