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Many auto manufacturers engage the AC compressor when the defroster is used because the AC system also dries the air. In a humid environment the drying effect of the AC can help keep the windshield clear.
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Why does the AC light come on when you want the heater to work?
Some vehicles automatically turn on the a/c when you turn on the defroster. A/C removes humidity from the air and allows the defroster to clear the windows faster.
Why does your trail blazer sputter when you turn on the defroster?
when you turn the defroster on, it also lets the air conditioner cycle to kind of like dry the air so to speak, and to keep the a/c compressor lubricated. This also can bog the motor sometimes whenit dosent run constantly
Why can you do to take of the fog of the windows in 92 Honda civic?
Turn the defroster on. If you have a separate AC switch, turn it on also. The AC should come on with the defroster automatically, but might not. If no AC, set the vent control to outside air instead of recirculate.
How do you turn on outside mirror defroster for a 2005 Ford Expedtion?
I believe when you turn on the rear window defroster the heated mirrors also turn on
Why does the air conditioning unit go on and off with only the heater turned on 1993 ford probe gt?
The air conditioning will turn on with certain heater settings, typically any setting that mixes with the defroster. This to help remove moisture and improve the effectiveness of the defroster.
How do you turn on rear defroster on a Ford Tempo?
with a push button directly under the defroster control
93 ford escort wagon when you turn the defroster on the air blows out the vents instead of on the the top of the dashboard?
Because it's not a defroster button! It's just the symbol for ventilating the air into the car. It shoudln't be called a defroster since defrosting is meant by heating up the coils that you see at the back of the car. I'm pretty no car has wires in the front!
1998 Toyota Camry air conditioner comes on instead of defrost?
The a/c kicks in when u turn the defroster do dry up the air. Eliminating humidity aids in getting rid of the fog
Why does ac compressor cycle when the defroster is on?
To help dehumidify the air
Why does your car run the air-conditioning unit when the defroster is on?
dry air removes moisture better
Why does your car air conditioner keep terning on?
If you have the defroster in the on position the ac will do that.
What does a flashing AC button mean on a 2003 Toyota 4Runner?
Most of the time it means that the AC refrigerant has leaked out or that the AC doesn't work for some reason. Understand that most vehicles engage the AC when the defroster is on because the AC will dry the air, clearing the windshield quicker. If you turn on the Defroster and the AC light flashes, it just means that the AC won't turn on.
