PREVOST X3-45 COACH 2018 Operator's Manual page 76

Controls and Instruments
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seconds. Stop at the first safe place where the problem can be
checked.
If the temperature remains below or exceeds the normal
temperature range, the cooling system should be checked for
problems.
ENGINE OIL PRESSURE (psi)
Indicates the engine oil pressure in psi. When the oil pressure
is too low, the stop telltale light turns on, an audible alarm
sounds and a message appears on the DID. The engine
protection system will automatically derate and stop the engine
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in 30 seconds. Bring the vehicle to a safe stop where the
problem can be checked.
Failure to take necessary action when the stop telltale light is
on can ultimately result in automatic engine derate and
shutdown.
Front Brake Air Pressure (Psi) – Secondary System
Indicates the front brake air system pressure in psi. The
normal operating pressure is from 122 to 140 psi.
A low air pressure indicator LED illuminates when the front air
system pressure drops below 85 psi. If the air pressure drops
further, the STOP telltale light will turn on, an audible alarm will
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sound and a message will appear on the DID. If the air
pressure drops below 60 psi, the emergency spring brake
applies at full capacity.
Do not drive the coach when the brake air pressure is low.
N OTE
1 9 T
Do not refer to dashboard instruments during adjustment
procedures. Use only calibrated gauges.
PA1627 X3-45 Operator's Manual
STOP TELLTALE LIGHT
STOP TELLTALE LIGHT
OIL PRESSURE PICTOGRAM
WARNING
WARNING