Question about 2006 Toyota Highlander
This is on a 2001 Toyota Highlander automatic heater/ac controller unit. When I turn the controller knob to change the temperature, the temperature remains the same. The unit blows the temperature listed on the screen but can not be changed
You have one of two possible problems.
1) The temperature shaft retention nut is loose behind the knob
2.) The wires to the potentiometer part of the temperature may be broken.
Either one is common to this vehicle. The replacement of the AC controller is about 900 dollars. If the wires are broken, they can easily be reattached to the circuit board via soldering. What you would have to do is remove the control box from the dash, and disassemble it. Once the unit is apart, there are 3 wires from the temp knob to the circuit board that need to be re-soldered. The unit CAN be repaired, as opposed to the expense of replacing it.
Posted on Apr 23, 2009
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Posted on Jan 02, 2017
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