Blue Bird D3RE 2014 Driver's Handbook Manual page 69

DEF Levels of Priority Notification
A system of driver alerts keeps the driver informed of when the DEF is in need of
service. When fluid is low or contaminated, several levels of alerts occur in sequence,
each indicating a more imperative warning. When priority warnings occur, they will
appear in Quad 1 of the Message Display in lieu of the odometer reading while Quad 3
indicates fluid level in the DEF tank at all times. The notifications are as shown below.
DEF Level 1. When the DEF level reaches 10% in the tank, a DEF LEVEL LOW warning
will appear in Quad 1 of the Message Display at which point the amber DEF warning
icon will appear in the lower left warning bank. This warning is accompanied with a
single beep.
DEF Level 2. When the DEF level reaches 5% in the tank, a DEF LEVEL CRITICAL
warning will appear in Quad 1 of the Message Display, this DEF LEVEL CRITICAL warn-
ing display will flash from positive to negative and the amber DEF Warning icon will
remain in the lower left warning bank. This warning is accompanied with repeating
beeps.
DEF Level 3. When the DEF level reaches 2.5% in the tank, a DEF LEVEL DERATE
warning will appear in Quad 1 of the Message Display, this DEF LEVEL DERATE warn-
ing display will flash from positive to negative. The amber DEF Warning icon will
commence flashing in the lower left warning bank and an additional amber Engine
Warning light will appear. At this point a 25% engine torque derating will occur.
ROUTINE OPERATION
DEF Level Low
The DEF Level alert appears in the Message Display.
The DEF Warning will
appear in the Warning Bank.
DEF Level Critical
DEF Level Critical
The DEF Level alert appears in the Message Display.
The DEF Warning will
appear in the Warning Bank.
DEF Level Derate
DEF Level Derate
The DEF Level alert appears in the Message Display.
The DEF Warning will flash
in the Warning Bank.
The audible alert
beeps repeatedly.
Level 1
The audible alert
sounds one beep.
Level 2
The audible alert
beeps repeatedly.
Level 3
The Engine Warning
will appear in the
Warning Bank.
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