Automatic Day-Night Mirror

Automatic Day-Night Mirror Description and Operation

Inside Rearview Mirror with the Automatic Day-Night Feature System Operation

The inside rearview mirror uses two photocell sensors. One sensor is the headlight sensor, located on the face side of the mirror. The headlight sensor is used to determine light conditions present at the mirror face. The other sensor is the ambient light sensor, located on the rear of the mirror or windshield side. The ambient light sensor is used to determine the exterior light conditions. In the daytime, the mirror is in a normal state because of the high exterior light condition that is detected by the ambient light sensor. When low exterior light is detected along with high light condition from behind the vehicle, the inside rearview mirror will automatically darken the face of the mirror. With the transmission in reverse, backup lamp supply voltage is supplied as an input to the inside rearview mirror. The mirror monitors this input to disable the automatic day-night feature. This allows the driver to see objects in the mirror clearly when backing up, even during the night.

Driver Outside Rearview Mirror with Automatic Day-Night System Operation (If Equipped)

The automatic day-night feature of the driver outside rearview mirror is controlled by the inside rearview mirror. The inside rearview mirror supplies a signal and low reference to the driver outside rearview mirror. At night, with the automatic day-night feature enabled, the driver outside rearview mirror will automatically darken with the inside rearview mirror to reduce glare from headlamps behind the vehicle.

Inside Rearview Mirror with Rear Vision Camera System (If Equipped)

The inside rearview mirror contains a video display screen that will show the image from the rear vision camera when the transmission is in reverse. If the vehicle has navigation, the image will be displayed on the navigation/radio screen instead of the inside rearview mirror. For more information, refer to Object Detection Description and Operation (UVC) Object Detection (UVC)Object Detection Description and Operation (UFT) Object Detection (UFT)Object Detection Description and Operation (UD7) Object Detection (UD7).

Switches on the Inside Rearview Mirror with the Automatic Day-Night Feature

The inside rearview mirror has a switch that is used to enable or disable the automatic day-night feature of the mirror. With the ignition in the ON position, depress the ON/OFF switch to enable the automatic day-night feature of the mirror. A green indicator will illuminate on the mirror when the automatic day-night feature is enabled. To disable the automatic day-night feature of the mirror, depress the ON/OFF switch.

If the vehicle is equipped with OnStar(R), there are three additional switches on the mirror for OnStar(R) operation. For more information, refer to OnStar Description and Operation OnStar.