2013 Ford F250 Super Duty Regular Cab Diesel Supplement Printing 1 - Page 20

2013 Ford F250 Super Duty Regular Cab Manual

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Fuel and Refueling SELECTIVE CATALYTIC REDUCTION (SCR) SYSTEM Your vehicle is equipped with a selective catalytic reduction (SCR) system to help reduce emission levels of oxides of nitrogen from the exhaust of the diesel engine. The system automatically injects diesel exhaust fluid (DEF) into the exhaust system to enable proper SCR function. Importance of maintaining the DEF level In order for the SCR system to operate properly, the DEF level must be maintained. Generally, the DEF tank should be filled during the oil change service interval. See the scheduled maintenance information in this supplement for more information. However, certain conditions or driving styles, such as trailer towing or fast rates of acceleration, will require the refilling of the DEF tank more often. The engine control unit will monitor the amount of fluid available in the DEF tank. Running a system check in the message center will indicate whether the DEF level is ok or if it is less than 1/2 full. A message will automatically be displayed in the message center when the DEF level is low and needs to be refilled. When you see this message you should refill your tank. See the Information displays chapter of your Owner's Manual for information display functions. For instructions on refilling your DEF tank, see Filling the DEF tank in the Fuel and Refueling chapter. DEF warning messages and vehicle operations WARNING: Diesel Exhaust Fluid (DEF) must be refilled when low or replaced when contaminated or the vehicle speed will be speed limited to 50 mph (80 km/h). In these conditions, drive with caution and refill DEF immediately. If the DEF becomes empty or contaminated fluid is not replaced, the vehicle will become limited to idle speed only once stopped. In these conditions, be cautious where you stop the vehicle because you may not be able to drive long distances and will not be able to maintain highway speeds until DEF is refilled or replaced. WARNING: Tampering or disabling your vehicle's exhaust aftertreatment system will result in severe vehicle performance limitation including eventual speed limiting to 5 mph. 19 2013 Diesel (67l) Supplement, 1st Printing USA (fus)

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SELECTIVE CATALYTIC REDUCTION (SCR) SYSTEM
Your vehicle is equipped with a selective catalytic reduction (SCR)
system to help reduce emission levels of oxides of nitrogen from the
exhaust of the diesel engine. The system automatically injects diesel
exhaust fluid (DEF) into the exhaust system to enable proper SCR
function.
Importance of maintaining the DEF level
In order for the SCR system to operate properly, the DEF level must be
maintained. Generally, the DEF tank should be filled during the oil
change service interval. See the
scheduled maintenance information
in
this supplement for more information. However, certain conditions or
driving styles, such as trailer towing or fast rates of acceleration, will
require the refilling of the DEF tank more often.
The engine control unit will monitor the amount of fluid available in the
DEF tank. Running a system check in the message center will indicate
whether the DEF level is ok or if it is less than 1/2 full. A message will
automatically be displayed in the message center when the DEF level is
low and needs to be refilled. When you see this message you should refill
your tank. See the
Information displays
chapter of your
Owner’s
Manual
for information display functions. For instructions on refilling
your DEF tank, see
Filling the DEF tank
in the
Fuel and Refueling
chapter.
DEF warning messages and vehicle operations
WARNING:
Diesel Exhaust Fluid (DEF) must be refilled when
low or replaced when contaminated or the vehicle speed will be
speed limited to 50 mph (80 km/h). In these conditions, drive with
caution and refill DEF immediately. If the DEF becomes empty or
contaminated fluid is not replaced, the vehicle will become limited to
idle speed only once stopped. In these conditions, be cautious where
you stop the vehicle because you may not be able to drive long
distances and will not be able to maintain highway speeds until DEF is
refilled or replaced.
WARNING:
Tampering or disabling your vehicle’s exhaust
aftertreatment system will result in severe vehicle performance
limitation including eventual speed limiting to 5 mph.
Fuel and Refueling
19
2013 Diesel
(67l)
Supplement, 1st Printing
USA
(fus)