GF54.21-P-6040FQ Upper Control Panel Control Unit, Component Description

GF54.21-P-6040FQ Upper Control Panel Control Unit, Component Description
MODEL 218





N72/1 Upper control panel control unit
N72/1e1 Automatic child seat recognition airbag OFF indicator lamp
N72/1e2 ATA [EDW] function indicator (with code (551) Antitheft alarm system (ATA [EDW]))
N72/1s5 Hazard warning flasher switch
N72/1s8 Parking system button (with code (235) Active Parking Assist or with code (220) PARKTRONIC)
N72/1s9 Rear window roller sun blind button (with code (540) Electric rear window roller blind)
N72/1s10 Left front seat heater button (with code 873) Heated left and right front seats or with code (401) Front comfort seats, incl. seat heating and seat ventilation)
N72/1s11 Right front seat heater button (with code 873) Heated left and right front seats or with code (401) Front comfort seats, incl. seat heating and seat ventilation)
N72/1s13 Left front seat ventilation button (with code (401) Front comfort seats, incl. seat heating and seat ventilation)
N72/1s14 Right front seat ventilation button (with code (401) Front comfort seats, incl. seat heating and seat ventilation)
N72/1s30 Stationary heater button (with code (228) stationary heater)
N72/1s50 ECO start/stop function button (vehicles with code (B03) ECO start/stop function)

Location
The upper control panel control unit is located on the center console.

Task
The upper control panel control unit performs the following tasks:
^ Reading in of signals
^ Transmitting signals

Reading in of signals
Signals are read in via the following connection:
^ Instrument panel LIN (LIN 1)

Instrument panel LIN
The upper control panel control unit reads in function feedback requests over the instrument panel LIN. These are sent from the front SAM control unit with fuse and relay module (N10/1).
The activity of the following functions is displayed by the corresponding light-emitting diodes in the buttons on the upper control panel control unit's controls:
- Parking system (with code (235) Active Parking Assist or with code (220) PARKTRONIC)
- Front seat heater (with code (873) Heated left and right front seats or with code (401) Front comfort seats, incl. seat heating and seat ventilation)
- Front seat ventilation (with code (401) Front comfort seats, incl. seat heating and seat ventilation)
- Stationary heater (with code (228) Stationary heater)
- Antitheft alarm system (ATA [EDW]) (with code (551) Antitheft alarm system (ATA [EDW]))
- ECO start/stop function

Transmit signals
Signals are sent through the following connection:
^ Instrument panel LIN

Instrument panel LIN
The upper control panel control unit sends the function requests for the following buttons over the instrument panel LIN to the front SAM control unit:
- Hazard warning flasher switch
- Parking system button
- Rear window roller sun blind button
- Left front heated seat button
- Right front heated seat button
- Left front seat ventilation button
- Right front seat ventilation button
- Stationary heater button
- ECO start/stop function button