Instrument Cluster Description and Operation
Displays Test
Certain instrument cluster features are tested when the ignition
is turned on in order to verify the features are working properly.
The following occurs when the ignition is turned on:
| • |
The ABS indicator illuminates
briefly. |
| • |
The adaptive forward lighting
indicator illuminates briefly. |
| • |
The active front steering
malfunction indicator illuminates briefly. |
| • |
The battery indicator
illuminates briefly. |
| • |
The brake indicator
illuminates briefly. |
| • |
The diesel particulate filter
indicator illuminates briefly. |
| • |
The door ajar indicator
illuminates briefly. |
| • |
The electric park brake on
indicator illuminates briefly. |
| • |
The electric park brake
service/malfunction indicator illuminates briefly. |
| • |
The fuel level low indicator
illuminates briefly. |
| • |
The lane departure warning
indicator illuminates briefly. |
| • |
The oil pressure low indicator
illuminates briefly. |
| • |
The park brake indicator
illuminates briefly. |
| • |
The park assist service
indicator illuminates briefly. |
| • |
The press clutch indicator
illuminates briefly. |
| • |
The rain sense indicator
illuminates briefly. |
| • |
The reduced engine power
indicator illuminates briefly. |
| • |
The security indicator
illuminates briefly. |
| • |
The service vehicle soon
indicator illuminates briefly. |
| • |
The smart beam indicator
illuminates briefly. |
| • |
The tire pressure low
indicator illuminates briefly. |
| • |
The electronic stability
control-active indicator illuminates briefly. |
| • |
The electronic stability
control off indicator illuminates briefly. |
Indicators and Warning Messages
Refer to
Indicator/Warning Message Description and Operation .
Engine Coolant Temperature Gauge
The instrument cluster displays the engine coolant temperature
as determined by the engine control module (ECM). The ECM sends the
engine coolant temperature information via a High Speed CAN-Bus
signal to the body control module (BCM). The BCM then sends the
information via a Low Speed CAN-Bus signal to the instrument
cluster to display the engine coolant temperature. The engine
coolant temperature gauge defaults to 40°C (104°F) or below
if:
| • |
The ECM detects a malfunction
in the engine coolant temperature sensor circuit. |
| • |
The BCM detects a loss of
serial data communications with the ECM. |
| • |
The instrument cluster detects
a loss of serial data communications with the BCM. |
Fuel Level Gauge
The instrument cluster displays the fuel level based on the
information from the ECM. The ECM converts the data from the fuel
level sensors to a fuel level signal. The ECM sends the fuel level
signal via a High Speed CAN-Bus signal to the BCM. The BCM then
sends the information via a Low Speed CAN-Bus signal to the
instrument cluster to display the fuel level. If the fuel level
falls under 11% the instrument cluster switches on the low fuel
level indicator. The fuel gauge defaults to empty if:
| • |
The ECM detects a malfunction
in the fuel level sensor circuit. |
| • |
The BCM detects a loss of
serial data communications with the ECM. |
| • |
The instrument cluster detects
a loss of serial data communications with the BCM. |
Speedometer
The instrument cluster displays the vehicle speed based on the
information from the ECM. The ECM sends the vehicle speed
information via a High Speed CAN-Bus signal to the BCM. The BCM
then sends the vehicle speed information via a Low Speed CAN-Bus
signal to the instrument cluster in order to display the vehicle
speed, either in kilometers or miles, based on the vehicle
requirements. The speedometer defaults to 0 km/h (0 mph) if:
| • |
The BCM detects a loss of
serial data communications with the ECM. |
| • |
The instrument cluster detects
a loss of serial data communications with the BCM. |
Tachometer
The instrument cluster displays the engine speed based on the
information from the ECM. The ECM converts the data from the engine
speed sensor to an engine revolution signal. The ECM sends the
engine speed information via a High Speed CAN-Bus signal to the
BCM. The BCM then sends the information via a Low Speed CAN-Bus
signal to the instrument cluster to display the engine speed. The
tachometer defaults to 0 rpm if:
| • |
The ECM detects a malfunction
in the engine speed sensor circuit. |
| • |
The BCM detects a loss of
serial data communications with the ECM. |
| • |
The instrument cluster detects
a loss of serial data communications with the BCM. |
Driver Information Center Display
In the lower middle of the instrument cluster, an additional
display is installed. Its task is to give additional information,
such as an odometer or error codes. This part of the instrument
cluster is available in 4 different variants, mostly depending on
the assembled engine. For further information refer to
Driver Information Center (DIC) Description and Operation .
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