The electrically operated door mirror is a relatively recent innovation for the modern motor car. Initially only available on high-end models it is now becoming more commonplace in the mid-range automobile too.
This system allows the driver to adjust the viewing angle from the within the car at the press of a switch.
The operation of the mirror is activated via a four way switch. The switch will operate one of two motors in a forward or reverse direction depending on the position selected. The gearing ensures that as the motor rotates, arms, which are attached to the rear of the mirror glass, are moved, thus moving the glass in the appropriate direction. There are variants of this principle but these tend to be the most common type in use today.
The most sophisticated electric mirrors are also fitted with a heating element. When activated, this will automatically clear snow, frost or condensation from the mirror glass. The heater automatically switches off after a preset period.
