I'm finally getting my 4runner back tonight after two weeks at the mechanic. I want to replace the heater fan switch but am unclear on how the dash disassembles there. I know how the radio trim removes but know I need to go farther.

Can someone tell me how to get to it? Any pics would be a huge help too!

 

If your fan works on high and nothing else, it's not the switch, it's the blower motor resistor.

 

Thanks! I've already replaced the resistor and the fan. Even had a mechanic replace the heater core and evaporator. While they had the dash apart I took all of the duct work and the box and resealed all of the flapper doors.

I have heat but I'm barely getting any airflow out the vents on all four fan speeds. I'm thinking the fan's not getting enough current. I don't know what else there is left to do.

 

have you checked the blower motor?

 

Pull the knobs off and then gently pry the face off of the controls. The rest is gravy.

 

That's interesting. If your getting limited air flow on all settings I would say to check all the wiring going to the motor. And then check the motor.

 

Thanks for all of your help. Problem resolved! Once I pried the heater face off I was able to snake the switch back through the glove box opening and swap it out. The switch I cleaned up definitely had more juice. Additionally, I found out that the heater fan was wired in reverse. Once I fixed that I had dust blowing out all of the vents.

Thanks again!