Window Motor
An electric motor that drives the regulator mechanism to raise or lower a side window glass.
A window motor is a small, 12-volt direct current (DC) electric motor responsible for raising and lowering a vehicle's side windows. It is mounted inside the door panel and paired with a worm gear assembly to provide high torque.
When the driver or passenger presses the window switch, electrical current is sent to the motor, causing it to spin in forward or reverse directions. The motor turns a gear that drives the window regulator mechanism, which physically pushes the window glass up or down.
Because window motors are sealed inside the door, they are exposed to moisture that seeps past the window weatherstripping. Over time, internal motor windings can burn out, gears can strip, or the motor can seize from lack of lubrication.
Symptoms of a failing window motor include a window that rolls up slowly, makes a grinding noise, works intermittently, or refuses to move at all. Replacing the motor requires removing the door panel and unbolting the motor from the regulator.