Lower Control Panel, Basic Function - GF54.21-P-9800A
Model All (4xWD)
Example illustration of lower control panel
| 1 | 24 V trailer turn signal indicator lamp |
| 2 | 24 V charge indicator lamp |
| 3 | On-board electrical system voltage/operating hours counter display |
| 4 | ESP® OFF push-button switch |
| 5 | 12 V trailer turn signal indicator lamp |
| 6 | On-board electrical system voltage/operating hours counter switchover push-button switch |
| 7 | Differential lock push-button switch for front axle with indicator lamps for "Preselected"/"Engaged" |
| 8 | Differential lock push-button switch for transfer case with indicator lamps for "Preselected"/"Engaged" |
| 9 | Differential lock push-button switch for rear axle with indicator lamps for "Preselected"/"Engaged" |
| 10 | "High Range" push-button switch with function indicator lamp |
| 11 | "Low Range" push-button switch with function indicator lamp |
| 12 | Manual drive program mode push-button switch with function indicator lamp |
| 13 | "Dimming" push-button switch, lower control panel |
| 14 | Left seat heating push-button switch with function indicator lamp (stage 1/2) |
| 15 | Rear window heater push-button switch with function indicator lamp |
| 16 | Stationary heater push-button switch with function indicator lamp |
| 17 | Right seat heating push-button switch with function indicator lamp (stage 1/2) |
Overview
This document contains information on:
- General
- Function
General
The lower control panel is used to operate driving functions and comfort heaters and to display control and status feedback.
Function
The lower control panel is connected to the user interface gateway via LIN, which forms the interface to the network architecture of the vehicle.
The lower control panel sends user entries to the user interface gateway; the gateway then forwards these entries to the corresponding systems.
The user interface gateway sends the status information from the corresponding systems for actuating the respective LEDs to the lower control panel.
The lower control panel evaluates the following user entries:
- ESP® ON/OFF
- Differential lock for front axle, rear axle and transfer case
- "High Range"/"Low Range"
- Manual transmission mode
- Left/right seat heating
- Rear window heater
- Stationary heater
- On-board electrical system voltage/operating hours counter switchover
- Dimming of lower control panel
The lower control panel displays the following information:
- On-board electrical system voltage/operating hours counter display (3)
- 24 V charge indicator lamp (2)
- 24 V trailer turn signal indicator lamp (1)
- 12 V trailer turn signal indicator lamp (5)
- Indicator lamps of all push-button switches