Lower control panel control unit, component description - GF54.21-P-6060GZ
MODEL 164 with CODE (489) Airmatic (air suspension with level adjustment and adaptive damping system ADS) with CODE (430) Offroad package
Location
The lower control panel control unit is located in the center console.
Task
Scanning the following switches:
- Downhill Speed Regulation switch (N72s30)
- Low Range switch (N72s31)
- Level adjustment high switch (N72s32)
- Level adjustment low switch (N72s33)
- Differential lock thumb wheel (N72s34)
Reading in the following function indicator lamps:
- Level control function indicator (N72e4)
Function
Downhill Speed Regulation switch (DSR)
The driver can switch the DSR on and off using the Downhill Speed Regulation switch. A red LED integrated into the switch indicates whether the function is active or not. Downhill Speed Regulation is an aid for driving down hills with an adjustable speed that can be set between 4 and 18 km/h.
Low Range switch
Via the Low Range switch the driver can switch from the on-road ratio (High) to the off-road ratio (Low). A red LED integrated into the switch provides indicates the current operating condition.
Level adjustment high switch
Function requirements:
- Term. 15 "ON"
Function:
By actuating switches the driver can raise the level of the vehicle to offroad level 3. Until each respective level is reached the relative LED flashes on and off in the level control function indicator. When the level is reached the LED remains constantly on.
Level adjustment low switch
Function requirements:
- Term. 15 "ON"
Function:
By actuating switches the driver can lower the level of the vehicle to highway level.
Until each respective level is reached the relative LED flashes on and off in the level control function indicator. When the level is reached the LED remains constantly on.
If the Highway level is reached, there is no display in the level control function indicator.
Differential lock thumb wheel
The driver can use the differential lock thumb wheel to select various stages (transfer case and rear axle differential lock):
- Automatic locking of the transfer case (interaxle differential lock) and rear axle differential (interwheel differential lock).
- The transfer-case differential (interaxle differential lock) is manually locked (100 %), the rear axle differential (interwheel differential lock) is automatically locked.
- The transfer case (interaxle differential lock) and rear axle differential (interwheel differential lock) are manually locked (100 %).
Discrete inputs:
- Circuit 30
- Circuit 31
- LIN bus
The lower control panel control unit is not a direct user of CAN-B, but rather it is connected via a LIN bus to the upper control panel control unit (N72/1) to CAN-B.