Upper Control Panel Control Unit, Component Description - GF54.21-P-6040FR
Model 257, 290 up to model year 2021
Shown on model 257.3
Shown on model 290.6 with code 446 (Touchpad only)
Location
The upper control panel control unit is in the center console.
Tasks
The upper control panel control unit forwards the signals of the integrated controls and receives the actuation for the integrated display elements.
The upper control panel control unit receives the following signals:
- Tml. 30t and circuit 31
- Actuation of the illumination for the hazard warning system button (N72/1s57) from the front SAM control unit (N10/6)
- Actuation of the front passenger airbag OFF indicator lamp (N72/1e1) (with code U10 (Automatic front passenger airbag shutoff)) over the LCP LIN (LIN A3) from the touchpad (A105) (with code 446 (Touchpad only)) or from the Audio/COMAND control panel (A40/9) (except code 446 (Touchpad only))
- Actuation of the front passenger airbag ON indicator lamp (N72/1e2) (With code U10 (Automatic front passenger airbag shutoff)) via the LCP-LIN from the touchpad (With code 446 (Touchpad only)) or from the Audio/COMAND control panel (Except code 446 (Touchpad only))
- Actuation of ATA function indicator (N72/1e3) (with code 551 (Anti-theft alarm system (ATA))) over the LCP-LIN from the touchpad (with code 446 (Touchpad only)) or from the Audio/COMAND control panel (except code 446 (Touchpad only))
The upper control panel control unit transmits the following signals:
- Actuation of the hazard warning system button to the front SAM control unit
- Actuation of further integrated controls over the LCP-LIN to the touchpad (with code 446 (Touchpad only)) or to the Audio/COMAND control panel (except code 446 (Touchpad only))
Shown on model 257.3
Shown on model 290.6
Structure
The following controls are located in the upper control panel control unit:
- Hazard warning system button
- "MEDIA" button
- "NAVI" button
- "RADIO" button
- "TEL" button
- Vehicle button
- Parking system button (model 290 with code 235 (Parking Pilot with PARKTRONIC))
The following display elements are located in the upper control panel control unit:
- Front passenger airbag OFF indicator lamp (with code U10 (Automatic front passenger airbag shutoff))
- Front passenger airbag ON indicator lamp for automatic child seat recognition (with code U10 (Automatic front passenger airbag shutoff))
- ATA function indicator (with CODE 551 (Anti-theft alarm system (ATA)))
Variants
The number of buttons and display elements in the upper control panel control unit is dependent on the code conditions listed in the "Design" chapter.
| Wiring diagram for upper control panel control unit | PE54.21-P-2119-97XBA |