Overhead control panel control unit purpose - GF54.21-P-4105-02PP

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

Reading in of integrated switches: 

• ESP OFF switch (N72/1s1)
• Rear head restraints switch (N72/1s4) (only on model 203.0)
• Hazard warning system switch (N72/1s5)
• Interior central locking switch (N72/1s6)

With code (551a) anti-theft alarm system (ATA):

• TS [AS]/IMS [IRS] switch with ATA [EDW] function display (N72/1s7)

With code (220a) Parktronic system (PTS):

• PTS OFF switch (N72/1s8)

On model 203.0 with code (540a) electrical roller blind for rear window:

• Rear roller blind switch (N72/1s9)

with code (873) front left and right heated seats:

• Left front HS [SIH] switch (N72/1s10)
• Right front HS [SIH] switch (N72/1s11)
• Rear wiper switch (N72/1s12) (model 203.2 only)

Actuating: 

• The integral automatic child seat recognition airbag OFF indicator lamp (N72/1e1)
• The illumination of the integrated switches
• The function illumination of the integral switches

With code (228) stationary heater:

• The illumination of the STH switch (N72s12)

with code (873) front left and right heated seats:

• the left front seat heated cushion (R13/1) and left front backrest heated cushion (R13/2)
• the right front seat heated cushion (R13/3) and right front backrest heated cushion (R13/4)

Actuation occurs by means of semiconductor switches.

To exchange data, the upper control panel control unit (N72/1) is connected to the Controller Area Network bus class B (interior) (CANB).