operators_manual

combustibles at least 1.5 m (5 ft)
away from the exhaust outlet while
the HEST lamp is illuminated.
Failure to do so could result in
serious injury.
• Do not approach the exhaust
system or surrounding areas
without allowing adequate time for
the system to cool down. Failure to
do so could result in serious burns
to the skin.
Diesel Exhaust Fluid (DEF) Lamp
Engine aftertreatment system includes a
diesel exhaust fluid (DEF) warning lamp on
the DEF gauge and additional warning
lamps in the instrument cluster
.
DEF Warning Lamp in Instrument Cluster
Diesel Exhaust Fluid (DEF) Gauge
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1. DEF Symbol
2. DEF Gauge Warning Lamp
The DEF lamp(s) will illuminate when the
fluid in the DEF tank reaches a low level. If
the lamp illuminates but the level is full,
seek service immediately for DEF fluid
quality or DEF equipment repair
.
Engine Braking System
Information on using the engine braking
system.
An engine compression brake is standard
on the MX-11 engines. Optionally, this
engine may be equipped with an exahust
brake. When activated, these devices
create a braking effect on the drive wheels.
Because it can help keep your vehicle’s
brakes from overheating, it can save wear
and tear on the service brakes. However,
the engine compression or exhaust brake
is not an emergency brake or the primary
vehicle brake.
WARNING
Do not operate the engine compres-
sion brake when
driving/operating your
vehicle bobtail or with a loaded or un-
loaded trailer on road surfaces with
poor traction (wet, icy, or snow cov-
ered roads) or in heavy traffic. There
may not be enough weight on the rear
axle to provide traction. Braking
caused by the normal operation of the
engine compression brake could
cause you to lose control of the vehi-
cle, resulting in an injury accident.
Make sure the engine brake is switch-
ed "OFF" when bobtailing or with an
unloaded trailer. Failure to comply may
result in death, personal injury, equip-
ment or property damage.
ENGINE OPERATION - Operating Instructions
16 Y53-1166-1G1 (08/2018)
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