DEF Warnings and Engine Limits
IMPORTANT: Ignoring the DEF warning lights
results in limited engine power, with the applica-
tion of a 5 mph (8 km/h) speed limit after the
engine is shut down and started again.
DEF Level Low—Initial Warning
When the DEF level is low, the following lamps notify
the driver. See Fig. 11.11. Refill the DEF tank in
order to cancel the warning sequence.
•
One bar of the DEF level indicator illuminates
amber—DEF very low, refill DEF
•
The DEF warning lamp illuminates solid amber
DEF Empty
When the DEF level reads empty, the following
lamps notify the drive. See Fig. 11.12.
•
One bar of the DEF level indicator flashes
red—DEF empty, refill DEF
•
The DEF warning lamp flashes amber
f080147
EXHAUST AFTERTREATMENT SYSTEM INFORMATION
Switch.
Level 1 Level 3Level 2 Level 4
Filter Regeneration
Recommended
Filter is reaching
Bring vehicle to
highway speeds to
Filter Regeneration
Necessary
Filter is now
reaching maximum
capacity
.
To avoid engine
derate bring vehicle
Parked Regeneration
Required − Engine
Derate
Filter has reached
maximum capacity
.
Vehicle must be
parked and a Parked
Parked Regeneration Required −
Engine Shut Down
Filter has exceeded
maximum capacity
Vehicle must be parked and a
Parked Regeneration or Service
(Solid)
(Flashing) (Flashing)
CHECK CHECK
(Flashing)
INDICATOR
LAMP(S)
Indicator Lamp
Message(s)
Diesel Particulate
Filter Condition
Required Action
capacity
. .
STOP
See Engine Operator’s Manual for complete Regeneration Instructions.
allow for an Automatic
Regeneration or
perform a Parked
Regeneration.
to highway speeds
to allow for an
Automatic
Regeneration or
perform a Parked
Regeneration as
soon as possible.
Regeneration must
be performed −
engine will begin
derate.
Regeneration must be performed.
Check engine operator’s manual
for details −engine will shut down.
For a driver performed Parked Regeneration, vehicle must be equipped with a dash mounted Regeneration Switch.
06/29/2009
24−01583−000B
W
ARNING
HEST (High Exhaust
System Temperature)
Exhaust Components
and exhaust gas are
at high temperature.
When stationary, keep
away from people and
flammable materials
or vapors.
A regeneration is in
progress.
Flashing
Solid
Fig. 11.4, ATS Warning Lamps
09/25/2006 f610814a
Fig. 11.5, Malfunction Indicator Lamp (MIL)
09/25/2006 f610815a
Fig. 11.6, DPF Status Lamp
Emissions and Fuel Efficiency
11.5