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Toyota Highlander Maintenance and Repair

4699 messages,  Last post on Dec 07, 2009 at 1:00 PM

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#4523 of 4699 My heater is "hot"!! by rpell1 May 08, 2009 (3:32 pm)
Hi all,   My 2003 HL 4cyl. 4wd. heater control is not doing it's job. Intermittantly, no matter where the dial is placed, HOT air is coming out.. ...This also happens, sometimes, when the A/C is on as well. After a minute or so of playing with the dial and fan settings, I can get things back to normal....but not always.   Any ideas where the gremlin is? This whole thing is "heating me up"!   Thanks, Replies to this message: webgood (May 08, 2009 4:25 pm) mikefm58 (May 08, 2009 5:07 pm) rpell1 (May 09, 2009 5:31 pm) tsotsi (May 10, 2009 10:00 am)
#4524 of 4699 Re: My heater is "hot"!! [rpell1] by webgood May 08, 2009 (4:25 pm)
Replying to: rpell1 (May 08, 2009 3:32 pm) rpell...short answer, check-out the Toyota Heating Ventilation and Air thread. Your answer is there. But, shorter answer...grab the center turn knob of the 3 on the HVAC controls, pull straight out, it comes right off, tighten the locking nut on the control post, push the knob back on,done. Regards, BGood Replies to this message: mikefm58 (May 08, 2009 5:07 pm) rpell1 (May 09, 2009 5:31 pm) tsotsi (May 10, 2009 10:00 am)
#4525 of 4699 Re: My heater is "hot"!! [webgood] by mikefm58 May 08, 2009 (5:07 pm)
Replying to: webgood (May 08, 2009 4:25 pm) Well said, just one update. Before pulling the center turn knob out, wiggle it. If there is lots of play, then this is the problem and continue as directed in the previous post.
#4526 of 4699 An ounce of prevention on the heater knob by tsotsi May 09, 2009 (6:03 am)
As I wrote before, the odds are good that your heat control nut is going to come loose and possibly result in an expensive problem. If it stays loose long enough, some of the wires may break from fatigue. If the knob feels the least bit wobbly, you would be wise to pull the knob off and tighten the nut. It only takes a couple of minutes. I put some Loctite on mine. I didn't wait for the heat to become erratic.   Why Toyota didn't put a locking device on the nut is a mystery to me. I am not cynical enough to believe they are trying increase dealer profits, but this is something they should have fixed years ago. I wonder if the new model Highlander has the same problem.
#4527 of 4699 Re: My heater is "hot"!! [webgood] by rpell1 May 09, 2009 (5:31 pm)
Replying to: webgood (May 08, 2009 4:25 pm) Many, many thanks........I had nightmares of a VERY expensive repair bill. I was told by a dealer that a replacement of the entire module may be the only fix, around $800 to $900. I said, "thank you", and got my "highlander" out of there.   I'm glad to hear it's probably an easiy fix.   Thank you again,   Rpell Replies to this message: tsotsi (May 10, 2009 10:00 am)
#4528 of 4699 Re: My heater is "hot"!! [rpell1] by tsotsi May 10, 2009 (10:00 am)
Replying to: rpell1 (May 09, 2009 5:31 pm) Even if tightening the nut does not completely fix the problem, there is no need to pay a dealer big bucks. You, or somebody else who is handy at minor repairs, can easily remove the old module and solder the wires if they are loose or broken. This has been described in Tundra Solutions.
#4529 of 4699 Throttle body cleaning by izzo233 May 19, 2009 (2:30 pm)
A service writer said that I should have a throttle body cleaning and this will help with my acceleration issues.Has anyone had this done and has it improved performance? Toyota is running a $69.99 Top Engine Cleaning service that includes throttle body cleaning,intake and valve cleaning and fuel system cleaner and additive.My 2006 has 39k miles. Do or not to do? Any suggestions? Thanks for the input.. Replies to this message: mdhutton (May 19, 2009 3:17 pm) izzo233 (May 19, 2009 3:27 pm)
#4530 of 4699 Re: Throttle body cleaning [izzo233] by mdhutton May 19, 2009 (3:17 pm)
Replying to: izzo233 (May 19, 2009 2:30 pm) I've never had throttle body cleaning done on a Toyota yet, but have had it on other vehicles I've owned and it does make a difference. $69.99 seems fair. Replies to this message: izzo233 (May 19, 2009 3:27 pm)
#4531 of 4699 Re: Throttle body cleaning [mdhutton] by izzo233 May 19, 2009 (3:27 pm)
Replying to: mdhutton (May 19, 2009 3:17 pm) Thanks for the response..
#4532 of 4699 Wheels chipping by eenglish99 Jun 08, 2009 (3:13 pm)
I have a 2002 Millenium Silver Highlander with the aluminum wheels. They have been holding up oretty well but on two of them the center piece inside the lug nuts with the logo on it is starting to peel on only 2 of them. Is this a common problem? Can you just get this little piece and replace them? I may try touch up paint. Thanks

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