GF68.49-P-0003GH Automatic Dimming Inside Rearview Mirror, Function

GF68.49-P-0003GH Automatic Dimming Inside Rearview Mirror, Function
- with CODE (249b) Automatic dimming inside rearwiew and outside rearview mirror (driver)

Function requirements
- No overvoltage or undervoltage
- Term. 15R or 15 ON
- Reverse gear not engaged
- Interior lighting not switched on

Function
The glass of the inside rearview mirror (A67) can be electro-chromatically dimmed. The mirror glass between the reflector and the glass cover contains a layer of electrolyte gel. The light transmission ratio of this gel changes when a voltage is applied to it.

The light hitting the surface of the mirror is more or less reflected due to the variable of the actuation voltage.

The actuation voltage is controlled by the electronic circuitry in the inside rearview mirror. This is accomplished depending on the ambient light and the light hitting the mirror.

The two input parameters are detected by the mirror dimming to rear sensor (A67h2) in the mirror housing (rear) and by the mirror dimming forward sensor (A67h1) in the mirror glass of the inside rearview mirror (A67).

The inside rearview mirror unit (A67) also acts as the master for the The outside mirror dimming function (driver's side).