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

GF54.21-P-6040RD Upper Control Panel Control Unit, Component Description
MODEL 172.4





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]))
N72/1s1 ESP OFF button
N72/1s5 Hazard warning system button
N72/1s8 Parking system button (with code (230) Exclusive parking assist)
N72/1s10 Left seat heater button (with code 873) Right and left front seat heaters)
N72/1s11 Right seat heater button (with code 873) Right and left front seat heaters)
N72/1s21 Left airscarf button (with code (403) AIRSCARF system)
N72/1s22 Right airscarf button (with code (403) AIRSCARF system)
N72/1s23 Vehicle dynamics button (with code (483) ADVANCED AGILITY package)
N72/1s50 ECO start/stop function button (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 and systems is indicated by the corresponding LEDs in the upper control panel control unit:
- Seat occupied recognition
- Antitheft alarm system (ATA [EDW]) (with code (551) Antitheft alarm system (ATA [EDW]))
- Parking system (with code (230) Exclusive parking assist)
- Seat heater (with code (873) Seat heater, left and right front seat)
- Airscarf (with code (403) Airscarf system)
- Adaptive damping system (with code (483) ADVANCED AGILITY package)
- ECO start-stop function (for code (B03) ECO start-stop function)
The integrated controls light up to match the value of circuit 58d. The value of circuit 58d is sent by the front SAM control unit over the instrument panel LIN to the upper control panel control unit.

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 integrated buttons over the instrument panel LIN to the front SAM control unit: