Low Def Level; 21Bintake Air Preheater On - Wait Before Starting; 22Bflat Tire (With Optional Tire Pressure Monitoring System) - PREVOST X3-45 COACH 2018 Operator's Manual

Controls and Instruments
4-38

Low DEF level

Illuminates when there is less than 2.6 gallons (10 liters) of DEF left in the tank.
06740_C
This telltale light starts flashing when there is only 2.5 liters (0.6 gallons) left in the
tank.
If the vehicle is kept in operation with an empty DEF tank, and engine derate will
eventually occur, limiting the speed to 5 mph.
C HARGING SYSTEM WARNING LIGHT
2 0 B
06740_D
Indicates a malfunction of the charging system or a low battery voltage condition.
N OTE
1 9 T
To identify if an alternator is defective (1=lower alternator, 2=upper alternator),
perform a system diagnostic using the Driver Information Display DIAGNOSTICS
menu. Select VIEW ACTIVE FAULTS and then ELECTRICAL SYSTEM. Scroll
through the active faults. The electrical system active faults will appear. A diagnostic
message indicating "alternator 1" or "alternator 2" with failure mode "open circuit" will
come in sight.
I ntake air preheater on – wait before starting
2 1 B
06740_E
Illuminates when the intake air preheater element is in function. Wait until this telltale
light has turned off before starting the engine. For more information on this feature, refer
to paragraph "Cold Weather Starting" in Starting And Stopping Procedures chapter.
F lat tire (with optional tire pressure monitoring system)
2 2 B
Illuminates when a tire pressure is 25% below the target tire pressure.
06740_F
H ill start assist
2 3 B
Indicates a malfunction of the hill start assist function. This function might not be
06740_G
available.
CAUTION
PA1627 X3-45 Operator's Manual