<P> In a typical auto / light truck installation, there is an individual switch at each window and a set of switches in the driver's door or a-frame pillar, so the driver can operate all the windows . These switches took on many different appearances, from heavy chrome plate to inexpensive plastic . </P> <P> However, some models like Saab, Volvo, Mazda and Holden have used switches located in the center console, where they are accessible to all the occupants . In this case, the door - mounted switches can be omitted . This also removes the need to produce separate door components and wiring for left and right - hand drive variants . </P> <P> Power windows are usually inoperable when the car is not running . This is primarily a security feature . It would be a simple thing to allow electric power windows to be operable when the ignition is turned off, however it would also make the car much easier to steal . Some systems offer the compromise of leaving power applied to the windows until a passenger door is opened at which time the window power is removed . </P> <P> Hydraulic drive systems could lower the windows at rest, since pressure from the hydraulic system was merely released to lower the window . Raising the windows required an electrically operated pump to operate and introduce pressure at the appropriate cylinder . These systems also required pressure lines to each cylinder (in the doors, as well as on certain cars, to the power seat and a power operated convertible top). Because of the complexity, the system could also leak fluid . </P>

Electric front windows + one touch + anti-pinch