I just purchased a new '04 4Runner, and after 600 miles, the heater/ac fan intermittently refuses to turn on. Although the dash indicators say the fan is on, the fan motor isn't turning, and no air is emitted from the vents. This happens whether I use Auto or Manual climate control. It typically happens when I first start the car in the morning (it's not garaged, and is only partially protected from the elements on the side that faces my house). Once I've driven the car for a while, stopped, turned off the ignition, gotten out of the car, returned to the car (after running an errand of variable length), and turned the heat back on, the fan works fine.
The past few mornings haven't even been that cold (~25 F with overnight temperatures probably in the teens), but my gut tells me that it's got something to do with engine temperature.
Any ideas?
Thanks, Darryl R.