Heat not working

[20GenSedan09]

I have a 2009 4.6 sedan. No matter what temp you set the temperature control at it blows cold air. The blower motor and ac work fine.
The temperature of the car stays right In the middle ass it should. Coolant isn't low.
Anybody have any ideas?

 

[EdP]

I have a 2009 4.6 sedan. No matter what temp you set the temperature control at it blows cold air. The blower motor and ac work fine.
The temperature of the car stays right In the middle ass it should. Coolant isn't low.
Anybody have any ideas?

There are dampers that open and close to direct the air straight from the vent or over the heating coil. It may be sticking. I don't know if this car has a valve to control flow of water through the heating coil. If so, that could be not working.

 

[NSXNEXT]

Does the Genesis have a mixing valve? I had this problem on my TL and it required a little white lithium grease to get it to slide properly.

 

[20GenSedan09]

Does the Genesis have a mixing valve? I had this problem on my TL and it required a little white lithium grease to get it to slide properly.

Idk that's what I'm trying to figure out. I'm sure it has a valve that's stuck not allowing coolant into the heater core. I was hoping someone else might have fixed the same problem on their genesis

 

[Jet]

So what about colder a/c air coming out of all vents except the driver side? Is that a temp control module or something? If so what’s the part number?

Best,

JET

 

[edizzle89]

Idk that's what I'm trying to figure out. I'm sure it has a valve that's stuck not allowing coolant into the heater core. I was hoping someone else might have fixed the same problem on their genesis

Also could be a clogged heater core, that's what caused my car to not have heat, I was able to back flush it and blow some crap out of it and I got heat back.

 

[Harvellmcdonald198]

I have a 2009 4.6 sedan. No matter what temp you set the temperature control at it blows cold air. The blower motor and ac work fine.
The temperature of the car stays right In the middle ass it should. Coolant isn't low.
Anybody have any ideas?

D

 

[Harvellmcdonald198]

I have a 2009 4.6 sedan. No matter what temp you set the temperature control at it blows cold air. The blower motor and ac work fine.
The temperature of the car stays right In the middle ass it should. Coolant isn't low.
Anybody have any ideas?

Did you ever find out the problem mines doing the same thing

 

[Bbypnda]

Did you ever find out the problem mines doing the same thing

Same here. Initially I had a CEL for the thermostat, replaced that but still no heat.

 

[toxicavenger70]

Same here. Initially I had a CEL for the thermostat, replaced that but still no heat.

Is your temp gauge reading correctly? If so I would try a coolant flush. Next would be the temp sensor imo.

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