Question about 2002 Toyota Highlander
Hello. Welcome to FixYa. Please allow us to assist you.
You have one of two possible problems.
1) The retainer nut for the temperature control is loose
2) A wire is broken from the temperature control sub-circuit board to the main circuit board.
If the retainer nut is not loose, the unit can be repaired. This will entail removal of the heater control from the dash, disassembling it, identifying the broken wire, and resoldering the broken wire back in place.
If you are not skilled in disassembling the dash and the heater control, and not skilled in soldering, this job is best left to a professional. The alternative ti repairing the broken wire is costly. The replacement control is roughly 900 dollars, plus installation. A qualified technician can repair your control in less than 2 hours.
If you need further assistance, please feel free to get back to me.
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Posted on Nov 11, 2010
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Posted on Jan 02, 2017
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