Keeping aside the generic feature of the windows being rolled up and down with just the touch of a button, the power windows come with some unique features that make them more user-friendly and convenient. These features can be summed up as follows:

Automatic Down: This is a very common feature in almost all power windows. This feature allows the user to make the windows go all the way down by just tapping the button once. The system uses a circuit to monitor the amount of time that the switch was held down. If the switch is held down for less than a second, the window goes down all the way to hit the limit switch and stops there. In case the button is held down for a longer time, the circuit analyses the time and stops rolling the window down as soon as the button is released.

Automatic Up:This feature is not very common as it has certain complications. The automatic up works in the same way as the automatic down. But, the automatic up feature poses a risk. While the window goes up, if anything gets in the way of the window, like a child’s hand or a pet dog or cat’s paw, it is highly likely to injure them. As the window won’t stop until it hits the limit switch, it engages a risk of an accident. The only way out of this problem is the introduction of another circuit into the system, that can monitor the speed at which the window rolls up. As the speed is slowed down due to an obstruction, the circuit reverses the power back to the motor and the window goes down.

Courtesy Power-On:As stated earlier, power windows work only when the ignition of the vehicle is on. But some cars have a courtesy power backup which is supplied to the window circuit even after the engine is turned off. In case you forget to roll up your windows, this feature saves you from the hassle of turning your ignition on again, just to pull the windows up.