Fan Control

Found this while replacing the radio in my 01. Anyone else have an issue with this control? Or have a lead on a replacement? It still works, but I’m not crazy about operating my truck with a switch that has got hot enough to do this.

 

That's the heater control housing, look like it got hot,it's plastic. If the switch still works, I wouldn't worry about it. If you want to replace it,get your wallet out, not cheap.For the part check with Roman from Cool Springs Toyota, He's a member here. Great guy.

I attached 2 pfd's that might help.

 

I would recommend you start looking for a replacement. From your pic, I am going to guess that one, or more of the resistors on the fan control circuit board are overheating. Best case, the individual resistor burns up and fails, which usually means you will lose one or more fans speed. Worst case, the resistor could heat up enough to burn the control board, and possibly cause a fire. Most heater fan control systems use a combination of different resistors to regulate how much current is sent to the blower motor, based on the fan speed switch setting, in order to change the fan speed. This is not that uncommon a failure. I have seen it for many years, across various manufacturers. Usually the fan speed control is replaced to fix it, but I have seen where some individuals with electrical experience have replaced the specific resistors instead of replacing the entire unit.

 

If the fan motor is going south (bearings) that will create more load, thusly drawing more amps through the resistor bank. That has the net effect of raising the thermal output of the resistors.

While you are neb-nosing under there check to see if the fan moves freely.

 

Also, check the blower motor resistor located next to the blower motor itself.

Your plastic shouldn’t be melted like it is in your pic. Something is causing it to overheat.

Junk yards sell replacement control panels.

 

I’d buy a new OEM blower motor and resistor as they are both relatively inexpensive. Buy a used control junk yarder as those are high dolla brand new.

 

All the fan speeds work, but I tried to use the air conditioning yesterday with no luck. Had no indication that the compressor is cycling. Could this be the reason I have no ac?