The fastest way to defrost a windshield is to turn the defrost vent on without heat or simply open the windows. Another option is to warm the inside of the car by turning the heater on.
no heat to front window went defrost is on
on the dash below the windshield.
does fan door motorized or on a vaccuum line when you switch from AC to defrost?
No, it is not safe to drive with a frozen windshield. It can obstruct your view and increase the risk of accidents. It is important to fully defrost and clear your windshield before driving.
Yes, the ac will run in the defrost position to dry the windshield.
Start driving with your air conditioning on defrost, the AC will defog the windshield but you need to be moving.
The defrost function simply directs air over the inside of you windshield. It's temperature is controlled by the temperature dial on your environmental controls.
Yes, the windshield defroster will turn the A/C compressor on.
If it only does this after a rain, chances are you have a leaking windshield. Or the aircond. drain is clogged, even if you are only using the defrost with heat the air-cond. runs with the defrost.
To quickly and effectively defrost a frosty windshield on a cold winter morning, you can use a mixture of water and rubbing alcohol in a spray bottle. Spray the solution onto the windshield and use a scraper to remove the ice. You can also turn on your car's defroster and let it run for a few minutes to help melt the ice. Additionally, parking your car in a garage or using a windshield cover can prevent frost buildup.
On my 1995 Ford Explorer when the defrost position is selected , and the temperature knob is set in the red area to get heated air to defrost the windshield , the A/C compressor will cycle on and off to help dehumidify the air, but the compressor ONLY cycles on and off in the DEFROST POSITION ( sorry if I'm misinterpretting your question )
With many vehicles, if the defrost mode is on, the ac will continue to run. This helps to clear the inside windshield from moisture.