Why does the heater blower not work on a Ford Focus?

Answer 1

If it doesn't blow at all, and/or you only feel a small amount of air coming through the vents (not forced), it may be the blower motor switch. I changed out mine for under $10. The local dealer had a new switch for $5. I had to buy a tool to remove the Ford factory radio at a regular auto parts store for another $5. The whole operation is in FaqFarm somewhere (I added it after I figured it out myself), but here's what you need to do in general... Use the radio tool by putting one U-shaped piece into the left side of the radio (you'll see where the tool should fit) and one into the right side. Pinch them away from each other and the radio will slide out. Unhook wires as needed to get it out of the way. Remember where they go or you won't have tunes when you're done! Then reach down to the back of the heater switch. I think there was one screw that needed to be loosened or removed, but essentially the switch is just a little twist-lock sort of fitting with a wire or two on the back. Wiggle the bad one out, the good one in, rehook the wires, rewire the radio and slide the radio back in. That's the very, very simple version. It took me about 15 minutes on a cold winter day. Not a big deal once you get the radio out of the way and you can see what's going on behind the switches. Good luck.