Contaminated Diesel Exhaust Fluid
(DEF) or inoperative Selective
Catalytic Reduction system
Selective catalytic reduction
systems are sensitive to
contamination of the Diesel
Exhaust Fluid (DEF). USE ONLY API or ISO
22241 CERTIFIED DIESEL EXHAUST FLUID
(DEF). If the selective catalytic reduction
system becomes contaminated or
inoperative, the Diesel Exhaust Fluid (DEF)
light will illuminate and exhaust fluid
system fault messages will appear in the
information display.
Continued driving without replacing DEF
or having the selective catalytic reduction
system repaired will result in the following
actions as required by the California Air
Resources Board (CARB) and U.S.
Environmental Protection Agency (EPA):
• Within a certain number of miles
(kilometers) to empty, speed will be
limited upon restart. Prior to this
occurring a message will appear in the
information display.
• Further vehicle operation without
replacing contaminated DEF will cause
the engine to enter an idle-only
condition. This will only occur upon
vehicle refueling, vehicle idling in park
for 1 hour, or engine shutdown for 10
minutes or more and will be indicated
by a message in the information display
indicating required actions to resume
normal operation.
For either vehicle speed limiting or idle-only
condition, normal vehicle operation will
resume when you repair the contaminated
system. To service a contaminated or
inoperative system, see an authorized
dealer. Diesel Exhaust Fluid (DEF) guidelines
and information
•
Use only Diesel Exhaust Fluid that
carries the trademark: American
Petroleum Institute (API) certified DEF
or ISO 22241.
• Do not put DEF in the diesel fuel tank.
• Do not overfill the DEF tank.
• Do not re-use the DEF container once
it is emptied.
• Avoid spilling DEF on painted surfaces,
carpeting or plastic components.
Immediately wipe away any DEF that
has spilled with a damp cloth and
water. If it has already crystallized, use
warm water and a sponge.
• Store DEF out of direct sunlight and in
temperatures between 23°F (-5°C) —
68°F (20°C).
• DEF will freeze below 12°F (-11°C).
• Do not store the DEF bottle in your
vehicle. If it leaks it could cause
damage to interior components or
release an ammonia odor inside your
vehicle.
• DEF is non-flammable, non-toxic,
colorless and water-soluble liquid.
• Do not dilute DEF with water or any
other liquid.
• An ammonia odor may be smelled
when the cap is removed or during
refill. Refill DEF in a well ventilated
area.
Typical Diesel Exhaust Fluid (DEF)
Usage
The charts below illustrate approximate
Diesel Exhaust Fluid (DEF) usage for the
given distances traveled under various
driving conditions and when using the
power take off. Your usage may vary
depending on: driving style, trailer towing,
loaded vehicle weight, weather, idle time,
PTO usage.
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Super Duty (TFA) , enUSA Fuel and RefuelingE163176
