GF88.79-P-2010SK Automatic Dimming Outside Mirror and Inside Rearview Mirror, Function

GF88.79-P-2010SK Automatic Dimming Outside Mirror And Inside Rearview Mirror, Function
- with CODE (249) Automatically dimming inside rearview mirror and outside mirror (driver)
- up to model year 08

Component Identification:

Function requirements
^ No overvoltage or undervoltage
^ C. 15R15 ON or c. ON

Function
The mirror glass of the inside rearview mirror (A67) and left electrically adjustable and heated outside mirror (M21/1) is electro-chromatically dimmable.This is realized by a layer of electrolyte gel in the mirror which controls the light permeability in increments depending on the voltage applied.The electronic circuitry in the inside rearview mirror (A67) senses the ambient light via the mirror dimming sensor, forward (A67h1) and the light hitting the mirror glass via the mirror dimming sensor, backward (A67h2).

The inside rearview mirror (A67) evaluates these input variables and transmits dimming information to the overhead control panel control module (N70), relaying the message for mirror dimming to the CAN-B (CAN)
The left door control module (N69/1) evaluates the dimming information and supplies the corresponding control voltage to the mirror dimming module (M21/1h1) for the left heated and electrically adjustable outside mirror (M21/1). The dimming information from the inside rearview mirror (A67) is received by the overhead control panel control module (N70), which supply the voltage to the mirror dimming circuitry (A67h3).

If an interior lamp is switched on during mirror dimming or the reverse gear is engaged, the dimming is interrupted.