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Why does the defroster not work when the control knob is set to defrost?
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∙ 16y ago
Need more detail, make and model and year would help.
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∙ 16y ago
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99 jeep grand Cherokee Laredo-The cold air from the ac comes out of the defroster instead of the panels.The selector knob does does not work when it is plced in position on the desired settings?
Most likely the vacuum hose is disconnected or broken.Does your cruise control work?Check this out :http://www.jeepforum.com/forum/f9/fan-always-blows-defrost-selector-doesnt-work-830241/
What is the meaning of different pictures on the fan control panel in the car and how does this work?
The knob with multiple pictures is used to control where the air comes out. For example floor, defroster, vents or a combination of two of them. It works through the use of cables, vacuum or electric motors.
Location of fuse box in Toyota avensis?
The rear windscreen defroster does not work. I have pressed the right button to defrost the windscreen when raining or cold
Why doesn't the defrost work on my Chevy venture van?
Hi, There are a couple of possibilities here. If you are not getting any air flow at all near the front windshield, then you probably have something blocking the vents or the doors that control the air flow are not working. If you have air flow, but it is taking a "long time" for the defroster to do its job, then the AC compressor is probably not working. The compressor is used in defrost mode so that it will dehumidify the air that blows on the windshield. If that doesn't work, then it can take quite a while for the defroster to work. Good Luck, Greg
How can I Troubleshoot rear defrost that does not work 2002 Ford Taurus?
First make sure your fuse to the rear defroster is good.Then test the wires that plug into the defrost bars on the rear glass, there are two plugs one one each side of the rear window.Take a tester and unplug the wires and test them for power, if no power you must have a bad connection from the fuse box to the back glass.If you have power and defroster still wont work you have bad defroster bars in the back glass, hope this helps you.
How do I fix the 1989 Honda accord climate control panel wherein the front and rear defroster stopped working?
Is it the push button style climate control panel? If so I am having the same problem. I can not adjust where the air blows from because its not getting the signal from the buttons. Also the lights are not Illuminated and the rear defrost does not work.
Why would hot air come out of the defroster and vent work but not the heater on 95 S10 blazer?
What causes heat to only come out of the defrost and vent but not the floor of a 1995 S10 Blazer?
How do you best defrost a 1999 Plymouth Breeze in the mornings in winter so that the windshield defrosts on the outside and doesn't fog up on the inside?
Pour warm/hot water on the windows. It works every time! If the defroster and heating units are working correctly I don't understand why the inside windshield would still be fogged up. I have a 2000 Plymouth Breeze and the owners manual says when using the defroster be sure the the vent control knob is turned to outside air position. Hopefully this will work. NEVER!!! EVER!!! EVEEEEERRRRR!!!!!! pour hot water on your cold windshield! The temperature change WILL pop your windshield.
How do you figure out why the heater and blower work but the ac and defroster do not?
The HVAC doors that control the airflow are activated by small vacuum motors. The system is designed to fail safe; this means that the system will fail in full defrost mode. So, knowing this and the fact that you have heater but no A/C or defrost you should assume the system has a failed control head (the part that you select functions with with button or lever). Or the doors are stuck due to an warped duct system (usually high heat related).
Why does the ac engage when on defrost in your 97 Chrysler sebring?
It is supposed to work that way. The AC is used to help remove excess moisture from the interior air so that the defroster can clear the window more efficiently.
I have a 1986 GMC half ton and my defrost doesn't work very good it pushes most of the air through the dash front vents and not defrost but it still blows good hot air?
sounds like the vent door that changes the air from defrost to heater is jamed its a little metel door like a flap.follow the cable from defroster switch and you should be at the door,its a manual door
What would cause the rear window defroster on a 1993 Nissan 240 SX SE to not work despite there being no broken contacts or lines?
Follow the wire from the defrost into the hatch. I found a 1992 240sx fastback which had a cut line.
