Everything else works fine. I have a 2011 Crown Vic Police car and the defrost air just trickles out, but the vent air blows strong. All the hot air comes out the normal vents. No matter what setting it's on, or speed, it all comes out the defrost vents. it appears that the doors are working. no air coming out the dashboard or defrost vents. Then one day, MAX setting on cold air stopped working, but all other settings continues to work. Sucks when you’re trying to warm your right hand. It seems like everything is working except the defrost. Maintenance/Repairs. SOURCE: ac will not blow thru ac vents, only thru defrost vents. Re: Fan Only Blows Defrost, Won't Change To Floor Or Vent. Just realized that the windshield demister/defroster vent are not working. Going to call dealership anyway. dodge. 2 Posts . All of a sudden, right before vacation, my defroster does not seem to divert air to the windshield. Defrost not working all air coming from dash vents. nothing happens. Ted . Front air conditioner vents (both the ones for your body/face and feet) aren't working. how do i determin witch ones to replace. Discussion Starter • #1 • Oct 31, 2015. The AC will finction, it provides cold air, but it only comes out of the defroster, or on the front vent setting, it blows air out of the floor & defroster. Can some one help me my defrost vents not working.. getting chilly fast here in NJ.. lol .. will need them soon!! To vent or floor . The air flow vent control is not working. The diverter door diverts air to the floor vents, dash vents and defrost vents. I’m not sure if that has anything to do with the issue but I guess I’ll add that. A couple weeks ago, my heat, AC, vents, defrost all stopped working. I have a 2007 Dodge Grand Caravan. Hi, I have an A3 2009 2.0TFSI . Vent Doors in your HVAC system are not working properly. it's been like this for a week and a half now. Do you know of a fix for this? My A/C and heat work, blows from the dash vents and/ or the floor. FredT Registered User. knob to divert air does nothing can't get defrost air flow . 2010 Silverado ECRB LT2 5.3L Flex 6L80E 3.42 Z60/Z82 HD Tow Turns out the side vents of my 2009 Honda blow air regardless of what setting I have it on (feet only, front defrost only, all result in side vent … i keep it on defrost but the heat still is stuck on the top four vents on the front of the dash and now it defrosts the truck on the inside. The air is coming out by the feet, the side vents and a little out the front vents. When you want air to come out at the floor and you change the setting, a door closes off or opens up appropriately in your system to direct the air to the correct location. Air is discharged through the heater outlet floor ducts (18C433) with a small amount going to the windshield defroster hose nozzles (18490). This is literally exactly what I've been looking for, my front vents are working fine but my defrost just stopped working out of nowhere I got a few suggestions that it was the temp blend actuator but quickly realize that that only controls the temperature which I'm not having a problem with thanks so much this literally saved me from mean headache and a costly repair bill. No air is coming out. defroster, front vent, etc.) if vent doors are operated by vacuum check for loose or broken vacuum hoses in the engine compartment , or check the fuse box for any ac/heat fuses if it is a electricaly controoled system Posted on May 04, 2009 Is it vacuum or electrical? How does the vent control knob control the vents? A3 windshield front demister / defroster not working. My defrost was not working and discovered my actuator was broken. I have pulled most of the dashboard off in order to see the vent doors. Nothing at any of the fan settings. No air comes out of it whatsoever. heater/defrost not working Discussion in 'Freightliner Forum' started by Driver4Christ, Feb 4, 2013. Has anayone delt with the defrost on an 06? Years ago this was controlled by vaccum lines, but now everything is electronic.... - … In the MIX position, outside air is discharged through the windshield defroster hose nozzles and the heater outlet floor ducts. Defrost not working! FredT Dec 18, 2016. This will work for 2009 Buick Enclave, Chevy Traverse, or GMC Acadia All other settings seem to be ok. Air, when turned to defroster, comes out of the vents. ram1500. Here is how to fix it. Report. The problem is there is no way of shutting off the air flow to the vents. When I turn the HVAC knob to "defrost", cold air pours out on my feet & the dash vents but no air comes out on the front window. Probably not what you wanted in the time. Solution: The mechanic can check and replace the compressor if it’s not working right. Front and bottom vent works. I checked fuses under the dash and in the engine and they are all good. Report. If your compressor has worn out or is malfunctioning, it can hurt the defroster. I’ll start by saying my condenser fan is out. Warm/hot air will only blow through adjustable vents on the front of the dash, will not blow through defrost or floor board vents. I was driving home in the rain last night, and I discovered that no air comes out of my windshield defrost vent. there is high volume air coming out the bottom right, towards the heatercore. Visitor. Defrost not working Discussion in 'Tech Info' started by Dobsogj, Dec 9, 2013. Brian2Lanky 2017-09-29 14:47:32 UTC #1. The heat in the car works just fine but when I turn on the defroster, there is no airflow out of the defroster vents. Maybe a few months after, no air came through the front vents - it only came from the defrost vents (when set on defrost). But about a week ago air just stopped coming out of all the vents and would only come out of the defroster vents. After using the defroster, my 2002 Yukon with computer climate control won't switch to the main vents. 2013 Chevy Malibu Front Defrost Not Working. it switches to the floor and vents, but when i switch it to the defrost, it seems to just come out the vents. Discussion Starter • #1 • Dec 12, 2008. Occasionally I’ll think the middle vents are broken because, like you, I get air coming out both side vents but not the middle. The symptoms of a bad compressor can also be caused by a loose drive belt that is not spinning the compressor fast enough. However, cold air (from air conditioner) will blow through all vents - including upper dash defrost vent. 2005 Chrysler Town & Country . Add heat! I pressed ever button I could under climate, but are only getting air out of the front defrost. If it's only working on setting 4, and NOT on 1/2/3 then you need to replace your Blower Motor Resistor. Can not switch heater from def. If some cables are damaged, the connection between components may not function and thus defrost never starts. Whenever I turn the heater to "defrost," the two on the side work totally fine - but the middle one is completely useless. ... 2003 dodge ram 2500 having issues with the ac controls not changing from defrost to vent etc. Thank you for the info, now please tell how I could locate problem of not getting air through vents only through defrost vents. If you have air flowing only through the vents with no defrost or floor, this door is failing. It has 3 defrost vents: 2 on the sides to get the front side windows, and then 1 big one in the center for the main windshield. Want to bot haven't tried yet - Answered by a verified Mechanic for Honda It started with my AC not working while I was at a stand still, say in traffic. Heat/air only work from rear vents. But when I turn the knob to defrost it will only blow from the floor vents (and the a/c button does not light up like normal when on defrost). Discussion Starter • #1 • Sep 12, 2012. thanks If I turn the vents on and am driving, I can feel a small amount of air coming out, but not much. All good. 1999 Chrysler Town & Country 198,000 mi, Visitor. My defroster and floor vents quit working - it only blows though the a/c vents. 2015 Chevy Silverado LTZ Z71 duramax13k on truck and now that the weather is changing I hit the defrost button and no air blows from defrost vents. I have a 2008 Acadia with a single zone manual HVAC. The fan will adjust from off and low to high. If the device that measures the temperature, air pressure, or overall iced-up state of the heat pump is not working correctly, the device will never enter the defrost … It would then work when I got back on the gas. 2011 pilot touring. 16 Posts . could it be the door not … There is just no air from floor vents or defroster. The dash vents are the only vents that work. The door just cracks open 1 inch to the defrost/heat section when setting for defrost. when i first noticed the problem it wasn't defrosting at all, even on full blast. I can change which vents the air goes out of (towards the feet, towards the face, both, etc.) Happen to anyone else? You have various doors in your system to direct air to appropriate places as you change the settings on your dash. Okay so I’ll try to give as much info as possible. defrost not working. Cure is to use the wipers and or turn the temp of the air coming out the defroster vents up. You were probably blowing cold air onto the inside of the glass. to … The drivers side portion on the defrost vent has barely any air coming out on high setting, it doesn't really defrost the drivers side portion of the windshield. But when I turn the dial (i.e. defrost not working vent is blowing out of the front. If it's working on 1/2/3 for a little while, and it varies how hard the air comes out of the vents, then the Blower Motor Resistor is on its way out, and you should just replace it. Jump to Latest Follow ... weird. Defrosting the front window without turning the temp up will only make the problem worse because the defrost setting turns on the ac. Report. 2,077 Posts . Air is only coming out of the front defrost vents. The A/C works and the blower motor is working. any help would be grateful. Bad thermostat/sensor/timer. This seems to coincide with me taking out the glovebox door to locate the cabin air filter. Jun 25 2013, 11:47pm Yea the problem with them astro's is the way the damn motor is crammed into the dog house with the heat it destroys the hard plastic vacume line . i believe that one or more actuator motors need replacing. 5 0 1. I wasn't born in Texas but I got back here as soon as I could. Now, no air (hot or cold) comes from from vents or defroster. Thank you i can not get hot air flow out of my defrost vents… This problem occurred about a year ago & my dealer charged $100. It blows hot air so I don't think there is anything wrong with they heating system. Defrost Vent not working. I pulled the dash out and checked the door actuators and they all work. I know the AC is working, but nothing blows out the vents at all. I have a 2003 Chevy Cavalier sport LS coupe. The blower circuit is energized, but the A/C clutch is not. My dealer charged $ 100 only working on setting 4, 2013 only through defrost vents then day... Volume air coming out, but all other settings seem to be ok.,! 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