PREVOST H3-45 VIP Owner's Manual page 130

5-8 Other Features
DEF TANK LEVEL - DRIVER WARNINGS AND INDUCEMENTS
Conditions / Triggers
Normal
1
DEF tank level sensor reads between
100% and 12%
2 Low DEF tank warning
DEF tank level sensor reads between
12% and 0.1%
3 DEF tank near empty
DEF tank level sensor reads less
than 0.1%
4 DEF tank empty and one (1) hour of
operation in engine derate mode
5 DEF tank empty and either
1. Diesel fuel refueling done with a
fuel level
increase of 15%, or more
2. Vehicle stationary (speed=0) for
20 minutes with engine off or at
idle
sensor reading
PA-1619 Owner's Manual H3-45 VIP
DEF Tank LOW LEVEL Indicator, DID
Message and audible warning
None
DEF TANK LEVEL LOW
REFILL DEF SOON TO
PREVENT ENGINE
solid
DERATE
3 beeps
DEF TANK EMPTY
REFILL DEF TO AVOID 5
MPH LIMIT
blinki
ng
ENGINE IN DERATE
3 beeps
DEF TANK EMPTY
REFILL DEF TO AVOID 5
MPH LIMIT
blinki
ng
ENGINE IN DERATE
3 beeps
REFILL DEF TANK
VEHICLE SPEED LIMITED
TO 5 MPH (8 KM/H)
blinki
ng
constant tone
Inducement
None
Warning
message
Engine torque
reduction of
25%
Engine torque
reduction of
40%
Vehicle road
speed limited
(RSL) to 5 mph
(8 km/h)
Note: The
vehicle has to
be stationary
before 5 mph
(8 km/h) road
speed limit
becomes
active