the defroster is actually your a/c. it doesn't run much when it's cold outside but it works with your heater to remove the moisture from inside the car. blowing warm dry air on the windshield. just like it removes the moisture (humidity) from inside the car in the summer. the difference is the temp. you have it on. even if the a/c don't work, the heater will still do the job, just not quite as well.
It is probably the sound of the defroster fan.
windshieldwheelwater pumpwindowwindow defroster
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 heats the windshield to melt the ice.
If you have the defroster in the on position the ac will do that.
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!
dry air removes moisture better
If you have the defroster on, the ac comes on automatically.
If there is an oil leak inside the engine compartment of the vehicle. The defroster could have some of the smell go into the cabin of the car. The engine should be checked for any oil leaks.
2 different units and different wiring systems.
No you cannot sue unless it was sold with a warrenty.
what are the colors of the wires for the rear window defroster coming from the rear window to the defroster bottom ? can any body help me