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

GF88.79-P-2010RC Automatic Dimming Outside Mirror And Inside Rearview Mirror, Function
- with CODE (249) Automatically dimming inside rearview mirror and outside mirror (driver)
- refinement package
- as of model year 09



Function sequence for automatically dimming outside and inside rearview mirror
^ C. 15R On
^ No overvoltage or undervoltage
^ Reverse gear not engaged
^ Interior illumination not switched on

The circuit status is transmitted by the EIS [EZS] control unit (N73) via the interior CAN.
The reverse gear status is transmitted by the gateway central control unit (N93) via the interior CAN.

Automatically dimming outside mirror and inside rearview mirror, function sequence
The mirror glass of the inside rearview mirror (A67) and mirror glass of the 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 inside rearview mirror unit senses the ambient light via the mirror dimming sensor, forward (A67h1) and the light hitting the mirror glass via the mirror dimming sensor, rearward (A67h2).

The overhead control panel control unit (N70) evaluates these input factors and transmits them to the left door control unit (N69/1) via interior CAN. The left door control unit then actuates the mirror dimming (M21/1h1). The mirror dimming (A67h3) of the inside mirror is actuated directly by the overhead control panel control unit.

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