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2005 Hyundai Sonata Heater Control Valve (water valve)


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TlawPHILLY
New User

Sep 29, 2019, 2:33 PM

Post #1 of 4 (1563 views)
2005 Hyundai Sonata Heater Control Valve (water valve) Sign In

Hi all -

My 2005 Hyundai Sonata (4 cylinder) vents hot air on my feet at all times, even with the vents set in the closed position and the HVAC dial turned to blue. My research suggests I had a bad/open heater control valve, which is allowing engine coolant to pass through my heater core at all times. I can take care of this issue myself if I only know where the valve is located. Can anyone point me in the right direction? All help is appreciated, thank you.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Sep 29, 2019, 2:43 PM

Post #2 of 4 (1558 views)
Re: 2005 Hyundai Sonata Heater Control Valve (water valve) Sign In

That would be a great idea if your car actually had one, but it does not.

The heat in that vehicle is controlled by a blend door that regulates heated air flow. it is operated by an electric motor/actuator. The problem can be that the actuator is stripped or inoperative or the door itself could be damaged. This is what needs to be determined by examining the actuator and see if it is responding to heat change commands or not.

It's behind the glove box.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



TlawPHILLY
New User

Sep 29, 2019, 3:57 PM

Post #3 of 4 (1528 views)
Re: 2005 Hyundai Sonata Heater Control Valve (water valve) Sign In

Great. I popped out the glove box and paneling and see a housing very similar to the air filter housing in the engine compartment (as an aside, I see I clearly need to replace my cabin air filter and clean out that compartment). Is actuator within this housing?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Sep 29, 2019, 4:09 PM

Post #4 of 4 (1523 views)
Re: 2005 Hyundai Sonata Heater Control Valve (water valve) Sign In

Here's the location





~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.







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