operators_manual

WARNING
If this lamp is on, do not park in an
area
where people are close by. You
must keep combustibles at least 5 ft.
(1.5 m) away from the exhaust outlet
while the HEST lamp is illuminated.
Failure to do so could result in serious
injury.
WARNING
If this lamp is on, temperature of the
tailpipe,
exhaust pipes, the diesel par-
ticular filter (DPF)/selective catalytic
reduction (SCR) device and surround-
ing components including enclosures
and steps becomes elevated during
engine operation or any regeneration
event and can cause serious burns to
the skin. Allow adequate cooling time
before approaching, working on or
near any part of the exhaust system or
surrounding components.
Emissions, Malfunction Indicator
Light
Illuminates when an engine emissions
failure has occurred. The vehicle can be
safely driven but should be serviced to
correct the problem. The situation should
not be considered an emergency
. In some
cases, the Malfunction Indicator Light will
activate in conjunction with the High
Exhaust Temperature, Diesel Particulate
Filter (DPF), and Diesel Exhaust Fluid
(DEF) Warning Lights.
Emissions, Engine Derate
The engine aftertreamtent system requires
attention and as a result is derating the
output of the engine.
The operator should perform a stationary
regeneration of the DPF and check the
DEF fluid level. Seek service at the next
available opportunity if the warning icon
stays on.
Diesel Particulate Filter (DPF)
W
arning Light
This icon and related message will appear
when the DPF needs to be regenerated
and then also during the regeneration
cycle. This may also appear if the system
is attempting to automatically regenerate
while the vehicle is in Power T
ake Off
operation mode.
Engine aftertreatment system includes a
diesel particulate filter and DPF warning
light.
Diesel Exhaust Fluid (DEF) Lamp
The engine aftertreatment system includes
a diesel exhaust fluid (DEF) warning lamp
on the DEF gauge and additional warning
lamps or popup messages in the
instrument cluster. Refer to the operator
manual for more details.
The engine aftertreatment system includes
diesel exhaust fluid (DEF) warning lamps
CONTROLS - Guide to the Warning Symbols
Illuminates when the exhaust gas
temperature and exhaust components
become extremely hot.
Y53-6096-1C1 (09/20)
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