Front defrost not blowing air

[thenewguyy]

Hi guys, I am not getting any air in front to defog and when set to front, the center 2 vents blow nothing. The front vents by face and feet are blowing air fine. Temp is fine as well, its definitely gets hot but i get nothing on the windshield and with winter here, the inside windows get foggy and even form ice but when your damn front defrost isnt working, takes forever for it to melt and i have no visibility for a while. Any ideas what it could be? Dont think its blend doors since those control temp.
The air coming out is whistling so I am assuming a flap is blocked or something but no idea where it is or how to tackle this

 

[joegr]

... Dont think its blend doors since those control temp.
The air coming out is whistling so I am assuming a flap is blocked or something but no idea where it is or how to tackle this

There are air temperature blend doors that control temperature by controlling how much air goes through the heater core. It does sound like that is working on your car, but there are also air direction doors that determine where the air comes out, and whether fresh air comes in or cabin air is recirculated. It sounds like one or more of those has failed. They are controlled by actuators that are nearly the same as the temperature blend ones. Probably, one or more of those has failed and should be replaced.

 

[thenewguyy]

There are air temperature blend doors that control temperature by controlling how much air goes through the heater core. It does sound like that is working on your car, but there are also air direction doors that determine where the air comes out, and whether fresh air comes in or cabin air is recirculated. It sounds like one or more of those has failed. They are controlled by actuators that are nearly the same as the temperature blend ones. Probably, one or more of those has failed and should be replaced.

Thanks for this info, yea I wasn't sure what else it could be, any idea what it's called exactly?

 

[joegr]

Thanks for this info, yea I wasn't sure what else it could be, any idea what it's called exactly?

Actuator - Mode Door, for example.

 

[Gunkk]

From the 2012 4.6 manual:

 

[jep604]

From the 2012 4.6 manual:

View attachment 50301

View attachment 50303

Wish I had seen your pages earlier, I had to learn this the hard way for dash removal. Excellent explanation

 

[thenewguyy]

Wish I had seen your pages earlier, I had to learn this the hard way for dash removal. Excellent explanation

I agree, this is amazing. So just that bottom piece on the driver side needs to be removed to change that part? That's much better than ripping the whole dash apart. Would my rear window defrost not working as well be because of this also?

 

[thenewguyy]

From the 2012 4.6 manual:

View attachment 50301

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is there a copy of this online somewhere?

 

[jep604]

I agree, this is amazing. So just that bottom piece on the driver side needs to be removed to change that part? That's much better than ripping the whole dash apart. Would my rear window defrost not working as well be because of this also?

I believe the rear window defrost is all electric heating elements in the glass(black line). Might be a fuse? I left the bracing in after the lower dash was removed and removed the lower blast tube that is held in by one screw to the bracing that would be right in front of your right knee if you were sitting in the seat.

 

[Gunkk]

Fuse, switch, wiring, component. Check 'em all.

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Help support this site so it can continue supporting you!

 

[jep604]

Fuse, switch, wiring, component. Check 'em all.

This is true. I had an '06 V6 Sonata prior to my '14 Genesis and kept replacing the 3rd brake light bulb and finally found the plastic connector was fitting correctly but the wiring "metal {male to female} pins were abnormally loose causing the bulb to blow. A few small ty-wraps solved the problem.

 

[thenewguyy]

Fuse, switch, wiring, component. Check 'em all.

Cool. question, is there somewhere online i can grab this manual from?

 

[Gunkk]

Check your PMs.

 

[shahhere]

My windshield is not getting the air when I put it on it so the door/lever is broken/stuck and whistling as noted here.

Is this the same actuator you have listed and will require dissembling the dash i assume? The dealer quoted me $4200 for this lol.

2012 3.8 Sedan....

The part number on another thread was listed as: Rock Auto is 73398 by Four Seasons

Hot air on pax side and cold air on driver's side

So I had this problem arise in October 2022 when the weather started to get cold in the Mid-Atlantic area where I live. I initially monitored the different threads on here and purchased 2 blend actuators, one for the pax side and the mode actuator for the defrost to the vents to the floor by...

genesisowners.com

Shahhere

 

[jep604]

My windshield is not getting the air when I put it on it so the door/lever is broken/stuck and whistling as noted here.

Is this the same actuator you have listed and will require dissembling the dash i assume? The dealer quoted me $4200 for this lol.

2012 3.8 Sedan....

The part number on another thread was listed as: Rock Auto is 73398 by Four Seasons

Hot air on pax side and cold air on driver's side

So I had this problem arise in October 2022 when the weather started to get cold in the Mid-Atlantic area where I live. I initially monitored the different threads on here and purchased 2 blend actuators, one for the pax side and the mode actuator for the defrost to the vents to the floor by...

genesisowners.com

Shahhere

Info on other post, hope this helps.