Upper control panel control unit, task - GF54.21-P-4105-02T

The upper control panel control unit (N72/1) is connected to the Controller Area Network bus Class B (interior) (CAN B) for the exchange of data.

The upper control panel control unit (N72/1) has the following tasks 

Reading in the integral 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)

Actuation of the following components:

• Switch and controls illumination of integrated switches
• Automatic child seat recognition airbag OFF indicator lamp (N72/1e1)

On vehicles as of 1.6.07 and without code (U18) automatic child seat recognition (ACSR) the automatic child seat recognition airbag OFF indicator lamp (N72/1e1) is only actuated with circuit 15 On for the lamp check for approx. 4 s, over and above this the automatic child seat recognition airbag OFF indicator lamp (N72/1e1) is nonfunctional.