Question about 2002 Toyota Highlander

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2005 Highlander. The dealer wants to charge me $1150 to replace the heater control. How do I disassemble the dash and remove the heater control, so I can re-solder the broken wires?

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2005 Highlander. The dealer wants to charge me - 79212222

  1. Remove the Instrument Panel (IP) bezel.
  2. Remove the radio.
  3. Remove the heater control assembly by firmly depressing and holding the retaining tabs. Slide the assembly forward.
79212224

  1. Disconnect the temperature and the mode cables from the back of the control assembly.
  2. Disconnect the electrical connection from the control assembly.
  3. Remove the control assembly.
INSTALLATION PROCEDURE
79212224

  1. Connect the electrical connection to the control assembly.
  2. Connect the temperatur2005 Highlander. The dealer wants to charge me - 79212222e mode cables to the back of the control assembly.
79212222

  1. Install the control assembly to the IP carrier until you hear an audible snap.
  2. Install the radio.
  3. Install the IP bezel.

Posted on Jan 01, 2011

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Posted on Jan 02, 2017

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1 Answer

Is it possible that with a battery that is loosing its charge that it could affect the heat? It is a 2005 Highlander. Thanks!


No, the battery has nothin to do with heat inside the cab. The heater works from the hot water in the engine (actually a mixture of water and antifreeze) This coolant mixture runs thurogh the engine to keep it around 190 degrees. It also runs through a small radiator (called a heater core) under the dash. there is a fan that blows air acroos the heater core and viola' heat in the car. Can you believe this used to be an option! Anyway, you bateery has nothin to do with heat. In the winter, a stuck open thermostat can cause you to have no heat in the car.

Jan 18, 2011 | 2005 Toyota Highlander

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HIGHLANDER "NO-HEAT" CONDITION (W/O Automatic Air)


Does your Toyota Highlander have no heat?
Here are two possibilities
The retainer nut for the temperature control is loose, which leads to a wire that is broken from the temperature control sub-circuit board, to the main circuit board.

If the retainer nut is 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 info, please post a question on the FixYa site.

on Dec 05, 2008 | 2005 Toyota Highlander

1 Answer

Car not getting any heat replaced thermostat,heater controls,heater acuator


The part you need is a dealer stocking part. There is an electric motor that turns heater core on and off. It's located under the dash to the left of the glove box. Some disassembly required. The part will cost about $120 to $180. part number is #MR958603. I saved money by purchasing it on line. It is a stocking part at most Mitsubishi dealers. Once you pull the glove box out and remove the bottom half of the dash all the way across, you should be able to gain access to the motor to replace it. Caution: if you do not put everything back in correctly and tie/tape it all back down carefully in the correct places you will have lots of under the dash noises when you are done.

Nov 14, 2010 | 2003 Mitsubishi Galant

1 Answer

The heating controls don't work on my 2002 Toyota Highlander, 4 cylinder SUV.


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.

Thanks for choosing FixYa today.

Nov 11, 2010 | 2002 Toyota Highlander

3 Answers

My 2005 highlander has the knobs that control the heating and coolinf fan, temperature and vent. The temperature control knob is randomly changing to hot when it is set on cold and visa versa when you turn...


Hello, and welcome to FixYa, Please allow me to assit you.

The issue that you are having is indeed in the control assembly. Yes, it does cost over 600 dollars to replace it.

However...if you have any soldering skills, or know someone that does have soldering skills, you can fix this problem yourself.

All that is wrong with the controller is a broken wire going from the small printed ciorcuit board that the knob is located on, to the controller's main PC board. Removal of the controller, and a disassembly will show you the broken wire. Just solder the wire back to the terminal that does not have a wire on it will fix you right up, AND save you 600 dollars!!!

Thanks for choosing FixYa for advice today.

Mar 30, 2010 | 2005 Toyota Highlander

2 Answers

The heater control on my 2001 Toyota Highlander is not working and the nut behind the heater knob is tight. Believe the problem may be the circuit board which I understand can be expensive to replace.


Once the heater control unit is removed then the connections for the knob which probably was loose at one time. There are 3 connections that break off. This is repairable by a skilled solderer as they are very close together. Otherwise it is 500+ from dealer and you don't get the whole unit, so it takes some gentleness to dissassemble that too. You might be able to find a cheaper fixed unit but I don't know of any.
Mark

Oct 20, 2009 | 2001 Toyota Highlander

1 Answer

Heat a/c problem


Hi.

I assume that you are having issues with the heat controller; which is a very common problem. And, it costs over 900 dollars to replace it, when all is wrong with it are 2 broken wires.

Unfortunately, you have to completely remove the heater controller from the dash, and completely disassemble it to gain access to the 2 wires that need soldered, it is impossible to gain access to the wires with the unit in the dash. When you get it apart, look for 2 broken wires at the sub-PC board (from the knob) going to the main PC board. Also, to avoid having these wires break again, make sure that the nut behind the knob is real tight; if it is loose, it allows the board to rotate, and snap the wires.

I would recommend that you reserve a day for this project.

Thanks for choosing FixYa for your solution.

Oct 08, 2009 | 2005 Toyota Highlander

2 Answers

A/C will suddenly send out heat. Fiddling with knobs seems to help. What's wrong?


You have a broken wire connection between the temperature control knob and the circuit board behind the center dash console. Vibration causes the failure and once the control knob gets loose the solder connection fails.

For someone that knows how to remove the dash unit and can re-solder a couple of new wires this fix should take no more than 1 hour. Make sure that you apply loctite to the heat control knob spindle nut when you re-assemble it.

The dealer quoted me 750 dollars to fix this issue and I found out that it's a common failure for this year. I fixed mine virtually for free but it took some tools and about an hour of my time.

Jun 02, 2009 | 2005 Toyota Highlander

1 Answer

Heater/AC control no longer allows change in temperature


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.

Apr 23, 2009 | 2006 Toyota Highlander

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