GF82.20-P-5216RD Overhead Control Panel Control Unit, Component Description

GF82.20-P-5216RD Overhead Control Panel Control Unit, Component Description
MODEL 172.4





N70 Overhead control panel control unit
N70e4 Left interior/reading lamp
N70e5 Right interior/reading lamp
N70e6 Left overhead control panel LED
N70e7 Right overhead control panel LED
N70e8 Eyeglasses box illumination (With code (876) Interior lights package)
N70s3 Interior lamp automatic function switch
N70s6 Left front reading lamp switch
N70s7 Right front reading lamp switch
N70s10 MAGIC SKY CONTROL button (with code (412) MAGIC SKY CONTROL)





With code (882) Interior monitoring system (with ATA [EDW] only)
S93/3 Antitheft alarm system/ emergency call system button group
S93/3s1 Towing sensor button
S93/3s3 Interior protection switch





With code (359) TELEAID emergency call system or code (348) Emergency call/ Assist system
S93/3s2 Emergency call system button
S93/3s4 Breakdown assistance button
S93/3s5 MB-Info button

Location
The overhead control panel control unit is located at top center of the windshield frame.

Task
The overhead control panel control unit has the following tasks:
^ Reading in of sensors, pickups and signals
^ Evaluation of input factors
^ Actuation of components
^ Display of information

Reading in of sensors, pickups and signals
The input factors are read in via the following connections:
^ Direct line
^ Wiper/inside rearview mirror LIN (LIN 2)

Direct line
The signals from the following components are read in over a direct line:
- Interior temperature sensor with integrated fan (N70b1)
- Interior lamp automatic function switch
- Left front reading lamp switch
- Right front reading lamp switch
- MAGIC SKY CONTROL button (with code (412) MAGIC SKY CONTROL)
- Antitheft alarm system/emergency call system button group (With code (882) Interior monitoring (for ATA [EDW] only) or with code (359) TELEAID emergency call system or with code (348) Emergency call/Assist system)
The interior lamp automatic function switch has the following positions:
- Interior light on
- Automatic function ON
- Automatic function OFF

Wiper/inside rearview mirror LIN
The overhead control panel control unit reads in requests over the wiper/inside rearview mirror-LIN.

Evaluation of input factors
The input factors are evaluated by the microprocessor and the corresponding components are actuated.

Actuation of components
The actuation of the components takes place via the following connection:
^ Direct line

Direct line
The following components are actuated via a direct line:
- Left interior/reading lamp
- Right interior/reading lamp
- Left overhead control panel LED
- Right overhead control panel LED
- Left sun visor mirror lamp (E14/1) via the left front mirror lamp switch (S101) (with code (876) Interior lights package)
- Right sun visor mirror lamp (E14/2) via the right front mirror lamp switch (S102) (with code (876) Interior lights package)
- Left A-pillar exit lamp (E11/6) (with code (876) Interior lights package)
- Right A-pillar exit lamp (E11/7) (with code (876) Interior lights package)
- Antitheft alarm system/emergency call system button group

Display of information
The overhead control panel control unit provides information over the wiper/inside rearview mirror-LIN.