Question about Hyundai Sonata

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I can't change the air temp from hot to cold air. Hot only.

My temperature control does not change from hot to cold. I think it is temp switch. It only blows hot air. I can't change it to cold after my wife changed it to hot one day to defrost the windshield.

Is is a fuse or a sensor? How can I fix it.

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  • armandhammer Dec 08, 2008

    I have a similar problem with my 2003 Santa Fe. If the temperature control (dial) is set all the way to WARM, it blows hot, but if the dial is turned even one tiny click back from the full WARM setting, it starts to blow cold. ANy ideas?




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The first thing to d is to go under the hood and see if eh cable is stuck if it is not then it has disconnected from its position secondly yu may have a heater control valve which is broken inside which means the water is still flowing nd the heater is on wheher o choose hot ot cold.

the only way t fix the heater control valve is to repace it

Posted on Nov 14, 2008


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My 2005 kia sorento will not switch from hot to cold and vise versa. the mechanic is saying its probably the "airdoor actuactor motor / mixer actuator. any advice and where to buy this part(s) for a g

Sorry for your troubles ,
Temperature Hand in dash reading NORMAL ?
Does it Turn Blue to Red if so is do you feel friction or restraint like your turning something rather than freewheeling (smooth fast turning) or Digital and or does it show that it should be warm and not cold ?
Does the TEMP change at all(even the least little bit could narrow the results down) when knob is turned?
POSSIBLE - The Actuator/Motor that switches the VENTS very well could be BAD , Temperature Switch / Climate Control Switch (hot to cold could be broke at the base and only allowing the knob to turn and not in the switch ) Thermostat may be stuck open (keeping the engine running cool and smooth but no heat , maybe just a slight TEMP change when switched from Cold to Hot ). The A/C Switch is pushed in or turned on or broke and is stuck ON
FIXES - 1st- Check FUSES - If Temp HAND Reads Normal it not your THERMOSTAT. - Change the Control Switch / Temp switch - Check A/C Button/Knob . AUTOZONE is my place of business they PRICE MATCH AS WELL!
Hope this Helps , Flaming Ratchets Auto Repair

Dec 05, 2013 | 2005 Kia Sorento

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I have a 2000 pontiac grand prix with a digital climate control system. The heat quit working, it doesn't blow out any heat. Now that it is warm outside the air stopped blowing out any air. The digital...

I have a 2000 pontiac grand prix with a digital climate control system. The heat quit working, it doesn't blow out any heat. Now that it is warm outside the air stopped blowing out any air. The digital temperature on the climate control is not correct. When it states that it is below 30 degrees on the ext and it is warm outside the air wont be cold. Once it starts going above 30 degrees the air gets colder. Today the blower stop working all together. Was told it maybe the climate control unit was bad. You can hear the door opening/shutting when you switch the temp from cold to hot. But there was no heat blowing out whatsoever in the winter time. Could you please give me your opinion on whether or not it is the climate control unit or something else?

Jul 11, 2011 | 2000 Pontiac Grand Prix

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2001 grand prix/ changed out dual climate/fan speed/air direction controls cause climate control knobs/slides were broken and was hot on drivers side and cold on passenger side-now can control pass side...

Probably the left side air temperature actuator is bad . electric motor that controls opening an closing of temp door in the HVAC case . No the computer doesn't need to be reset .
Temperature Valve Actuator Replacement - Left Side
Removal Procedure
Remove the left instrument panel insulator. Refer to Instrument Panel Insulator Panel Replacement - Left Side in Instrument Panel, Gauges and Console.
Remove the knee bolster. Refer to Knee Bolster Replacement in Instrument Panel, Gauges and Console.

Disconnect the electrical connector from the left air temperature actuator.
Remove the mounting screws from the left air temperature actuator.

Remove the left air temperature actuator.

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2 Answers

Temp control on cold, but, only blowing hot air and the blower switch stays on high all the time, even if you try and surn to a lower spped or off, still blowing, what is the problem?

as far as the fan goes thats a reley switch and if you have it on cold and it blows hot air it sounds like the door that alows it to change from hot to cold is stuck that happens alot

Feb 27, 2011 | 2000 Nissan Maxima

1 Answer

This car has the automatic temperature control system

The hot/cold switch is probably have a blend door box that opens to let the cold air in and closes to let the hot air in.From what you are saying this part is no responding to the switch movement.Make sure power is at the switch and power should go through the switch when put on cold air this moves the blend door.Some times the blend door goes bad and has to be replaced its under the dash on the right side.

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