It looks like it may be the issue. I was thinking the brushes in the fan motor or maybe a resister that controls the fan speeds. but this looks like my issue. It doesn't do it all the time but is pretty annoying in cold weather. Thanks for the info.
I have a 2003 4runner sport with a V8. My problem is the heater fan seems to be running on low to medium speed. It won't go to high speed even if I put it on manual from auto climate. On dash it shows running high. Any help would greatly be appreciated.
