LR3/Disco 3
cold warning will be cancelled.
INFORMATION DISPLAY
The information display is an Liquid Crystal display (LCD) located on the right hand side at the bottom of the instrument
cluster. The LCD has a viewable area of 43 mm X 20 mm with a seven segment display. When active, the information
display is illuminated as follows:
Pressing of the Trip button will cause the odometer to illuminate and the odometer and trip distance only will be
displayed for a period of 20 seconds
Ignition on will cause the odometer to illuminate with the full functions displayed
When the ignition is switched on and the lights are off, the information display will illuminate at full, normal brightness,
controlled by the ambient light sensor. If the lights are switched on, the intensity of illumination is reduced to a level
determined by the PWM dimmer control located on the lighting control switch.
The data shown in the information display is provided to the instrument cluster from other subsystem modules in the form
of CAN bus messages. The odometer and trip meter information is derived from the ABS module, the transmission
information is supplied from the transmission control module for automatic transmission vehicles or from the transfer box
control module for manual transmission.
Odometer
The odometer displays the total distance which the vehicle has travelled. This is calculated by a microprocessor in the
instrument cluster using wheel speed messages from the ABS module.
The odometer display can show 6 characters and distances up to 999,999 miles or kilometres. When the ignition is
switched off, the odometer reading can be displayed by pressing the trip rest button. The reading will illuminate for a short
time before extinguishing.
The total distance travelled is recorded in the instrument cluster Electronically Erasable Programmable Read Only
Memory (EEPROM) and the Random Access Memory (RAM). This ensures that the total distance is not lost if the battery
is disconnected. The distance is read and stored every 2 kilometres or miles travelled.
Trip Meter
The trip meter displays the total distance which the vehicle has travelled since the last trip meter reset. The trip meter
display can show four characters, with a decimal point separating the fourth character which displays 1/10th mile or
kilometre. The trip meter can display up to 999.9 miles or kilometres. When this figure is exceeded, the trip display starts
again from 000.0 miles or kilometres.
The trip meter can be reset by pressing the trip reset button on the instrument cluster for two seconds. The trip data is
stored in the instrument cluster RAM but not in the EEPROM, therefore, if the battery is disconnected, the trip data will be
lost and the display will show 000.0 when the battery is reconnected.
Gear Position Indicator
Automatic Transmission
The gear position indicator shows the current selector lever position on vehicles with automatic transmission. During
normal operation the display will show 'P' for Park, 'R' for reverse, 'N' for Neutral and 'D' for Drive.
When the transmission is operated in 'CommandShift™' mode, the display shows the currently selected manual gear; 1,
2, 3, 4, 5 or 6.
The gear position indicator can also display automatic transmission fault information. The following letters are displayed to
relay the fault type to the driver:
'F' - Transmission Control Module (TCM) has a fault and is using the default limp home mode
'H' - TCM has a fault, the default limp home mode is active and the transmission has reached an overheat
temperature of more than 137ºC (278ºF)
'E' - TCM has disabled CAN bus transmission because of a CAN bus failure or because of a transmission
