PREVOST H3-45 VIP Owner's Manual page 82

4-36 Controls and Instruments
Def Tank Low Level Indicator
Illuminates when there is less than 2.6 gallons (10 liters) of DEF left in the tank.
CAUTION
If the vehicle is kept in operation with an empty DEF tank, engine derate will eventually occur,
limiting the speed to 5 mph.
Charging System Warning Light
Indicates a malfunction of the charging system or a low battery voltage condition.
NOTE
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.
Intake Air Preheater On – Wait Before Starting
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, refer to
page 4 in Section 6 Starting and Stopping Procedures.
Hill Start Assist
Indicates a malfunction of the Hill Start Assist function. This function might not be available.
Antilock Brake System (ABS)
Illuminates when the ABS is not available or when the ABS is malfunctioning. Since the ABS
system does not operate at less than 4 mph (7 km/h), the indicator will remain illuminated until the
coach reaches that speed. Refer to
5 Other Features.
Trailer Antilock Brake System (ABS)
Illuminates when the trailer ABS is not available or when the trailer ABS is malfunctioning.
Esc - Electronic Stability Control
At vehicle ignition, the ESC telltale lamp illuminates for approximately 3 seconds and then turns off.
If it remains on steadily (not flashing) after ignition, or if it illuminates steadily while you are driving,
the ESC system may not be fully functional or their operation may be completely disabled. If this
happens, your vehicle will still have normal service braking and can still be driven, but without the
benefits of the ESC system.
Flashes quickly when ESC intervenes to reduce risk of loss of control.
High Beam
Illuminates when the high beams are selected.
High and low beams are selected with the multi-function lever. Refer to
LEVER" on page 9
"ANTILOCK BRAKING SYSTEM (ABS)" on page 27
in this section.
PA-1619 Owner's Manual H3-45 VIP
"COLD WEATHER STARTING" on
"MULTI-FUNCTION
in Section