PREVOST X3-45 VIP 2017 Owner's Manual page 64

4-30 Controls and Instruments
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
in 30 seconds. Bring the vehicle to a safe stop where the
problem can be checked.
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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
(secondary) air system pressure drops below 75 psi. If the air
pressure drops further, the stop telltale light will turn on, an
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audible alarm will 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.
NOTE
Do not refer to dashboard instruments during adjustment
procedures. Use only calibrated gauges.
STOP telltale light
STOP telltale light
OIL PRESSURE pictogram
WARNING
WARNING