PREVOST X3-45 2011 Operator'S Manual Download

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Controls and Instruments

STOP, CHECK and INFORMATION telltale
lights

STOP, CHECK and INFORMATION telltale
lights illuminate automatically to draw the atten-
tion of the driver and their associated messages
are displayed in the DID. More than one mes-
sage (see “Acknowledging Messages” below)
can be active at the same time. A displayed
message can be replaced by a new message
provided the new message has a higher priority.
Only fault codes that have a direct impact on
vehicle operation are displayed. All fault codes
are stored in the appropriate ECU for access by
service technicians.

STOP Telltale light

In the event of a serious fault, the red STOP
telltale light comes on and an audible alarm will
sound if the engine is running. An illuminated
stop message light indicates a serious problem
has been detected, and the driver must respond
immediately to the problem.

When illuminating, this telltale light means the
vehicle must be safely pulled off the road and
stopped. In some instances, the engine must be
switched off immediately.

WARNING

Failure to stop and take necessary action
when the STOP telltale light is on can result in
automatic engine shutdown and loss of power
steering assist. This can result in vehicle
accident and severe personal injuries.

In some cases preventive action may be taken
by the engine ECU to protect the engine, for
example:

If oil pressure or coolant level drop too
low, the engine is forced to low idle and
when the vehicle speed is zero, the
engine shuts down.

With excessive coolant temperature, the
engine will gradually reduce power output
to 50%. This telltale light always activates
an audible alarm.

After the automatic engine shutdown sequence,
the engine may be restarted after the key is
turned off and then back on. However, it will only
operate for 30 seconds unless the problem is
resolved. The Engine Stop Override switch can
be used to override the automatic engine shut-
down protection. The automatic engine emer-
gency shutdown will be turned OFF for 30 sec-
onds. This procedure can be repeated if done
before the 30 seconds are up. Use this function
sparingly and in order to move the vehicle to a
safe parking place only.

CHECK Telltale light

This telltale light means that a fault or an
abnormal operating condition has been
detected. The vehicle must be checked at the
next stop.

If the CHECK telltale light illuminates, an
associated message is displayed in the DID.
Always pay attention to the associated
messages (see “Acknowledging Messages”
below).

INFORMATION Telltale light

The INFO indicator light comes on when there is
a new information message or an abnormal
status is detected by the electronic control unit.
A pictogram or text or both are shown in the DID
in addition to the INFO telltale light (see “Ac-
knowledging Messages” below).

Acknowledging Messages

A fault message associated to a STOP, CHECK
or INFORMATION telltale light must be ac-
knowledged by pressing the ESCAPE or ENTER
button after which the display returns to the
same status that existed before the fault oc-
curred. All messages can be acknowledged.
Acknowledged but inactive messages are dis-
played again when the ignition key is turned to
the START position or they can be read in the
DID menu. Refer to

Other Features

for more

information on the DID menus.