Overhead control panel control unit, task - GF82.20-P-4101-02Q

General 

The overhead control panel control unit (N70) is connected to the Controller Area Network bus class B (interior) (CAN-B) for exchanging data.

The overhead control panel (OCP) control unit (N70) has the following tasks:

Control of the interior lights (IBL) and the following components 

• Ambient lamp (A67e3) (as of 1.12.04)
• Rear dome lamp (E15/3)
• Entrance and exit lamp in left door (E17/3)
• Right door entrance/exit lamp (E17/4)
• Front dome lamp (N70e1)
• Left front reading lamp (N70e2)
• Right front reading lamp (N70e3)

Voltage supply for the following components 

• Rear dome lamp (E15/3)
• Left front vanity mirror illumination (E14/1).
• Right vanity mirror illumination (E14/2)
• In-car temperature sensor (N70b1) as of 1.6.05
• Rain/light sensor (B38/2)
• Inside rearview mirror unit (A67)
• Left interior motion sensor transmitter and receiver (A26/4) (for vehicles with code (882) Interior monitoring (with ATA only))
• Tilting/sliding roof (SR)(M12) (for code (414)Power glass tilting/ sliding roof)

Reading in of integrated switches 

• Rear dome lamp switch (N70s2)
• Dome lamp switch (N70s3)
• Left front reading lamp switch (N70s6)
• Right front reading lamp switch (N70s7)
• Tilting/sliding roof switch (N70s1) (for vehicles with code (414) Power glass tilting/sliding roof)

In vehicles, the SOS pushbutton switch (S93/3) is installed in the overhead control panel control unit (N70). However, actuation is performed by the emergency call system control unit (N123/4).

Reading in of sensors 

• In-car temperature sensor (N70b1) as of 1.6.05
• Rain/light sensor (B38/2)
• Left interior motion sensor transmitter and receiver (A26/4) (for vehicles with code (882) Interior monitoring (with ATA only)