Using the air conditioner never saves fuel. But if you are going to use the air conditioner it is better at highway speeds than having the windows rolled down. In the city is better to turn the AC all and open the windows.
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It is probably the sound of the defroster fan.
The 1953 Lincoln was the first car that had a rear window defroster. It also was the first car to have an optional 4 way power seat.
it is normal. when you use the defroster, the air conditioner is also working to help dry the air passing over the windshield. this moisture is condensed by the cool evaporator and drained through the floor of the car.
windshieldwheelwater pumpwindowwindow defroster
yes, it works just like the a/c, it just blows the air on the windsheild/windows
Only if your defroster uses the A/C, otherwise heater will not effect gas mileage. The heater uses the waste heat from coolant used to cool the engine, so has no extra load on the engine. The heat was going to waste anyway. You are just diverting it into the car instead of outside.
If you have the defroster in the on position the ac will do that.
It heats the windshield to melt the ice.
stop using car engines.
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!
To help stop the car by using the braking power of the engine. To save your brake pads from wear.
No