GF88.79-P-2010FA | Automatic dimming outside mirror and inside rearview mirror, function | 22.2.08 |
MODEL 203.7
as of model year 09 /YoM 08 model refinement package
with CODE (249) Automatically dimming inside rearview mirror and outside mirror (driver)
Function sequence for automatically dimming outside and inside rearview mirror
C. 15R On
No overvoltage or undervoltage
Reverse gear not engaged
Interior illumination switched off
The current circuit status and the status of the reverse gear are transmitted by the EIS control unit (N73) to the interior CAN.
------------------------------------------------------------------------------------------
Automatically dimming outside mirror and inside rearview mirror, function sequence
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 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 the interior CAN. The left front 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.
| Electrical function schematic for automatic dimming mirror | ||
Left front door control unit, component description | N69/1 | ||
Overhead control panel control unit, component description | N70 | ||
Component description for the EZS control unit | N73 | ||
Inside rearview mirror, component description | A67 | ||
Outside mirror, component description | M21/1, M21/2 |
Referenced documents
- gf6849p2106fa Inside rearview mirror, component description
- gf7229p4141fa Left front door control unit, component description
- gf8057p6003fa Component description for the EZS control unit
- gf8220p5216fa Overhead control panel control unit, component description
- gf8879p4003fa Outside mirror, component description
- pe8879p205697fa Electrical function schematic for automatic dimming mirror