Inside rearview mirror, component description - GF68.49-P-2106CE
MODEL 204.0 /2 as of model year 2009 /YoM 08
MODEL 204.3
MODEL 204.9
Up to 31.5.10, shown on model 204.9
As of 1.6.10, shown on model 204.9
Location
The inside rearview mirror is located in the center on the front dome.
Design
The inside rearview mirror includes the following components:
- Left reading lamp (A67e1)
- Right reading lamp (A67e2)
- Ambient lamp (A67e3)
- Handsfree system microphone (A67b1)
In addition with code (232) Garage door opener with frequency 284-390 MHz:
- Garage door opener indicator lamp (A67e4)
- Button 1 garage door opener (A67s1)
- Button 2 garage door opener (A67s2)
- Button 3 garage door opener (A67s3)
- Garage door opener (A67n2)
Additionally with code (245) Electronic compass:
- Compass display button (A67s8)
- Compass module with display (A67n3)
Additionally with code (249) Automatic dimming inside rearview mirror and outside mirror (driver):
- Forward automatic mirror dimming light sensor (A67h1)
- Rearward automatic dimming mirror light sensor (A67h2)
- Automatic mirror dimming (A67h3)
In addition integrated with code (337) Taximeter in rearview mirror
- Mirror taximeter (A50/1)
- Taximeter push-button 1 (A67s4)
- Taximeter push-button 2 (A67s5)
- Taximeter push-button 3 (A67s6)
- Taximeter push-button 4 (A67s7)
Task
The inside rearview mirror includes the following functions:
- Voice control via voice control system microphone
- Ambiance and reading lamp
- Storage of trip information in trip memory (Storage capacity: information on approx. 800 trips)
- Acquisition of the distance covered via the integrated odometer
- Garage door opener (with code (232) Garage door opener with frequency 284-390 MHz)
- Mirror dimming (with code (249) Automatic dimming inside rearview mirror and outside mirror (driver) See function description for electric outside mirror)
- Direction indicator in inside rearview mirror (with code (245) Electronic compass)
In addition with code (337) Taximeter in rearview mirror:
- Switching on and off the roof sign lamp (E14/4) (with code (342) Roof sign connection for taxi) (when the roof sign lamp in the IC is activated (A1))
- Data exchange with multifunction control unit for special vehicle (N26/9)
- Reading out trip information via a serial data interface
Direction indicator in inside rearview mirror (with code (245) Electronic compass)
The compass module with display senses the terrestrial magnetic field and indicates the direction of travel at intervals of 45°. Possible displays are "N", "NW", "W", "SW", "S", "SE", "E" or "NE". The direction indicator in the inside rearview mirror can be switched on and off with the aid of the compass display button.
The following settings are required to correctly indicate the direction:
- Compass module calibration
- Setting for magnetic field zone
Compass module calibration
The compass module with display must be calibrated for correct function. For this purpose hold and actuate compass indicator button (t = approx. 4 s) until the system "C" appears in the inside rearview mirror. Then drive the vehicle in circles slowly. If the direction is indicated in the inside rearview mirror, the calibration is completed.
On vehicles as of 1.6.10 a suitable aid is required for actuating the compass display button.
Setting for magnetic field zone
Since the magnetic field of the earth is subject to fluctuations, the earth globe is subdivided into 15 magnetic field zones to allow exact display of the direction. The magnetic field zone must be adjusted manually. To adjust the current magnetic field zone press compass display button for t = approx. 2 s until the correct number for the magnetic field zone (1 to 15) is indicated. The desired magnetic field zone can be set by repeatedly pressing the compass display button. After setting the magnetic field zone do not press the compass display button again until the direction is indicated.