WARNING SYMBOLS
Illuminates when diesel particulate
lter is plugged. This warning will also
illuminate when regeneration operation
is disabled.
12. Emissions, High Exhaust
System Temperature (HEST)
Illuminates when the exhaust gas
temperature and exhaust components
become extremely hot.
Refer to
the Engine Aftertreatment
control operator manual for complete
instructions and warnings.
WARNING!
If this light is on, do not park in an
area of combustible vapors or materi
-
als. You must keep combustibles at
least ve (5) feet away from the ex
-
haust (outlet) stream (as it exits the tail
pipe) while the HEST lamp is illumi
-
nated. Always park your vehicle out-
side. Failure to do so could ignite an
explosion or harm bystanders which
could result in serious injury.
If this light is on, do not park in an area
where people are close by. You must
keep combustibles at least ve (5) feet
away from the exhaust outlet while the
HEST lamp is illuminated. Failure to
do so could result in serious injury.
WARNING!
If this light is on, temperature of the
tail pipe, exhaust pipes, diesel partic
-
ular lter (DPF), selective catalytic re-
duction (SCR) device and surrounding
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 be
-
fore approaching, working on or near
any part of the exhaust system or sur
-
rounding components.
WARNING!
13. Emissions, Malfunction
Indicator Lamp (MIL)
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 Lamp will activate
3
(04/13) Y53-6047–2C 3-39
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