PREVOST H3-45 VIP Owner's Manual page 74

4-26 Controls and Instruments
Engine Coolant Temperature (°F)
Indicates the operating temperature of the engine coolant in °F. The
normal reading should be between 170°F and 222°F (80°C to 106°C).
The temperature limit is dependent on the electronic program for the
engine model. When coolant temperature is excessive, the STOP telltale
light turns on, an audible alarm sounds and a pop-up message appears on
the DID. The engine protection system will automatically derate and stop
the engine in 30 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 in 30 seconds. Bring the vehicle to a safe stop
where the problem can be checked.
CAUTION
Failure to take necessary action when the STOP telltale light is on can
ultimately result in automatic engine derate and shutdown.
PA-1638 Owner's Manual X3-45 VIP
STOP telltale light
STOP telltale light
OIL PRESSURE Pictogram