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

GF54.21-P-6040TX Upper control panel control unit, component description

Component Identification:

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

General
The upper control panel control unit is connected to the Controller Area Network bus class B (interior) (CAN-B) for the purpose of data exchange.

Task
The upper control panel control unit reads in the following switches, if necessary controls their function and switch and controls illumination and switches the following displays via a separate microprocessor.

Reading in of integrated switches
^ ESP OFF switch (N72/1s1)
^ Rear head restraints switch (N72/1s4)
^ Hazard warning system switch (N72/1s5)
^ Interior central locking and ATA function display switch (N72/1s6)
^ Rear roller blind switch (N72/1s9) (with code (540) Electric rear window roller blind)
^ Left front HS [SIH] switch (N72/1s10) (with code (873) Heated left and right front seats or with code (401) Front comfort seats, incl. seat heating and seat ventilation)
^ Right front HS [SIH] switch (N72/1s11) (with code (873) Heated left and right front seats or with code (401) Front comfort seats, incl. seat heating and seat ventilation)
^ Left front seat ventilation switch (N72/1s13) (with code (401) Front comfort seats, incl. seat heating and seat ventilation)
^ Right front seat ventilation switch (N72/1s14) (with code (401) Front comfort seats, incl. seat heating and seat ventilation)
^ Upper control panel carrier open/close switch (N72/1s15)

Switching displays
^ Automatic child seat recognition airbag OFF indicator lamp (N72/1 e1)

On vehicles as of 1.6.07 and without code (U18) Automatic child seat recognition (ACSR) the airbag Off indicator lamp is only actuated with circuit 15 On for the lamp check for approx. 4 s, over and above that the airbag Off indicator lamp is nonfunctional.