PREVOST X3-45 VIP 2017 Owner's Manual page 65

Rear Brake Air Pressure (PSI) – Primary System
Indicates the rear 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 rear
(primary) air system pressure drops below 75 psi. If the air
pressure drops further, the stop telltale light will turn on, an
06738
audible alarm will sound and a message will appear in 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.
DEF Level
Indicates the amount of DEF (Diesel Exhaust Fluid) remaining
in the DEF tank. The DEF tank is considered as being full when
it contains 16 gallons (60 liters) of DEF. DEF consumption will
be approximately 2% of the diesel fuel consumed.
06735
DEF will begin to crystallize and freeze at 12°f (-11°c).
DEF expands by approximately 7% when frozen. In order
to permit DEF expansion without causing damages to the
DEF tank, do not fill the DEF tank with more than 16
gallons (60 liters).
Fuel Level
Indicates the amount of fuel remaining in the fuel tank. At the
beginning of the red area, there is approximately 48 gallons
(182 liters) left in the tank.
NOTE
A pop-up message will appear in the DID informing that there
06736
is only 24 gallons (92 liters) left in the fuel tank.
Controls and Instruments
STOP telltale light
WARNING
CAUTION
4-31