2012 FORD F750 warning

•The service engine soonindicator may come on. For more
information on the service engine soon
indicator, refer to
Warning lights and chimesin theInstrument Clusterchapter.
Selective Catalytic Reduction (SCR) System - diesel engines
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 must be
maintained. Generally, the DEF tank should be filled before the DEF
gauge in the instrument cluster reached the first low level warning (refer
toDEF warning messages and vehicle operations).
The engine control unit monitors the amount of fluid available in the
DEF tank. Failure to maintain an adequate amount of DEF in the system
generates warning messages that appear in the instrument cluster
message center and, unless the DEF tank is refilled, leads to a forced
reduction of engine operations.
DEF warning messages and vehicle operations
Your vehicle is equipped with a DEF gauge located in the instrument
cluster. The low level warning symbols (see chart) are illuminated if the
DEF gauge level drops below 0.5 gallon (1.9L) in the 5 gallon (19.0L)
DEF tank or 1 gallon (3.8L) in the 9 gallon (34.0L) DEF tank.
Upon filling the DEF tank after a low level warning, normal operation
resumes when the vehicle is restarted.
Continued driving without refilling results in the following actions as
required by the U.S. Environmental Protection Agency (EPA):
DEF Low Level Warning and Vehicle Consequence
DEF Tank LevelIndicator
LampsConsequence Remedy
Above initial
warning threshold
(Over 10% full)None None None
Maintenance and Specifications
210
2012 F-650/750(f67)
Supplement, 2nd Printing
USA(fus)

DEF Low Level Warning and Vehicle Consequence
DEF Tank LevelIndicator
LampsConsequence Remedy
Below initial warning
threshold (10% full)DEF solid
None
Add minimum of
1 gallon (3.8L)
DEF to 5 gallon
(19.0L) tank or
2 gallons (7.6L)
DEF to 9 gallon
(34.0L) tank Below critical
warning threshold
(5% full)DEF
blinking
None
Below initial derate
level (2.5% full)DEF
blinking
/
Amber warning
solid40% torque
reduction
Empty + engine
intentionally shut
down or in extended
idleDEF
blinking
/
Amber warning
solid
/
Red engine
solid
40% torque
reduction +
5 mph
(8 km/h)
vehicle speed
limit
Filling the DEF tank
Your vehicle is equipped with a DEF tank with a blue-capped filler port
The 5 gallon (19.0L) DEF tank is located on the left side of the vehicle
under the cab and the 9 gallon (34.0L) DEF tank is located on the right
side of the vehicle behind the Regular Cab and Super Cabs and under the
Crew Cab. The tank can be filled using a nozzle at a DEF filling station
(similar to fuel fill) or using a DEF bottle with a spout. Motorcraftbrand
DEF bottles are recommended. Other aftermarket bottles can be used but
it should have a seal on the spout and an internal vent tube to achieve best
fill performance and prevent overfilling.
Note:Do not put DEF in the fuel tank or any other tank on the vehicle.
This can cause damage to components not covered by your vehicle’s
warranty.
Maintenance and Specifications
211
2012 F-650/750(f67)
Supplement, 2nd Printing
USA(fus)

You can purchase DEF at your authorized dealer, most highway truck stops
or you can contact roadside assistance for help in finding a retailer that
sells DEF. See theCustomer Assistancechapter for more information.
Also, a government website locator is available for diesel exhaust fluid
supplies. The following web address can be used to find the nearest
location to purchase DEF: http://www.afdc.energy.gov/afdc/locator/def.
Use MotorcraftDEF or equivalent
meeting Ford specification
WSS-M2C130-A and/or ISO 22241.
Use only DEF certified by the
American Petroleum Institute. Look
for this certification trademark.
Repairs resulting from the use of a
non-certified DEF products may not
be covered by your vehicle’s warranty.
Maintaining the purity of DEF is important to avoid malfunctions in the
SCR system.
If DEF is removed from the tank for any reason, such as repair work, the
same DEF must not be used to refill the tank as its purity is no longer
guaranteed.
WARNING:Make sure that DEF does not come into contact
with eyes, skin or clothing. Should DEF contact your eyes, flush
them with plenty of water and contact a physician. Clean affected skin
with soap and water. If DEF is swallowed, drink plenty of water and
contact a physician immediately.
WARNING:Refill DEF in a well-ventilated area. When opening
the cap on the DEF tank or bottle containing DEF, ammonia
vapors may escape. The vapors can be irritating to skin, eyes and
mucous membranes. Inhaling ammonia vapors can cause burning to the
eyes, throat and nose and cause coughing and watery eyes.
To fill the DEF tank, see your authorized dealer or do the following
(before filling the DEF tank in cold climates, seeFilling the DEF tank
in cold climateslater in this section):
Maintenance and Specifications
212
2012 F-650/750(f67)
Supplement, 2nd Printing
USA(fus)

Contaminated DEF
SCR systems are sensitive to
contamination of the DEF. USE
ONLY CERTIFIED DIESEL
EXHAUST FLUID. If the system
becomes contaminated and the
vehicle continues to be driven with
contaminated DEF, the following warnings result:
Reducing Agent and Vehicle Consequence
Condition Indicator Lamps Consequence
Correct reducing agent None None
Incorrect reducing agent, at
detectionAmber warning
None
Incorrect reducing agent, at
detection + 10 hoursAmber warning
40% torque
reduction
Incorrect reducing agent, at
detection + 20 hours and
engine intentionally shut
down or in extended idleAmber warning
Red engine
40% torque
reduction+5mph
(8 km/h) vehicle
speed limit
If any of these warnings appear, the contaminated DEF must be purged
and replaced with approved DEF; refer to an authorized dealer or the
workshop manual.
Upon filling the DEF tank after a DEF contaminated warning, normal
operation resumes when the vehicle is restarted.
DEF guidelines and information
•DEF is non-flammable, non-toxic, colorless and water-soluble liquid.
•Use only DEF that carries the trademark: AMERICAN PETROLEUM
INSTITUTE CERTIFIED DIESEL EXHAUST FLUID.
•Ammonia odor may be smelled when cap is removed or during refill.
Refill DEF in a well ventilated area.
•Prior to filling, make sure surrounding area is clean of debris to
prevent contamination.
•Do not dilute DEF with water or any other liquid.
•Do not put DEF in the fuel tank or any other tank on the vehicle.
•Do not re-use the DEF container or nozzle once it is emptied.
•Do not overfill the DEF tank.
Maintenance and Specifications
215
2012 F-650/750(f67)
Supplement, 2nd Printing
USA(fus)

WARNING:The normal operating temperature of the exhaust
system is very high. Never work around, or attempt to repair,
any part of the exhaust system until it has cooled. Use special care
when working around the diesel particulate filter. The DPF heats up to
a high temperature after only a short period of engine operation, and
can remain hot even after the engine is turned off. Failure to follow
these instructions may result in serious personal injury.
Diesel particulate filter regeneration
Under most operating conditions, DPF regeneration is transparent to the
operator. A small increase in engine/turbo sound-level is normal during
filter regeneration. If, however, your engine is operated for extended
periods of time under one of the following conditions, operator
assistance may be required to facilitate the filter regeneration process:
•Vehicle is operated in stop-and-go traffic and/or maintains low speeds
as in a city/delivery driving
•Engine is started and shut-off frequently
•Vehicle payload is relatively light
•Vehicle is regularly operated in cold ambient temperatures (i.e. below
0°F [-18°C])
Diesel Particulate Filter Four–Level Loading Chart
Level/Lamp status Filter status Requested action
Level 1
solidRegeneration
requiredDrive on highway at
highway speedsORstart
“parked regeneration” to
prevent loss of engine
performance Level 2
flashing
(once per second)Nearly full; engine
performance is
limited
Level 3
flashing +solidFull; engine is
increasingly limitedPerform “parked
regeneration” to prevent
loss of engine
performance
Level 4
solidOver full; engine
performance is highly
limited. Continued
operation may result
in irreparable damage
to the filter.Pull vehicle safely off
roadway, turn on hazard
flashers and shut down
engine as soon as
possible; seek service
immediately
Maintenance and Specifications
219
2012 F-650/750(f67)
Supplement, 2nd Printing
USA(fus)

Instrument cluster lamp(s)
illuminate and/or flash when
operator assistance is required. In
addition, engine performance
becomes increasingly limited above
Level 1.
At Levels 1 and 2, two courses of
action may be taken by the operator
to facilitate filter regeneration:
1. The vehicle may be driven on the highway at highway speeds,
2. The operator may perform a parked regeneration by following the
steps inParked regeneration procedure.
At Level 3, performing a parked regeneration is the only available course
of action (short of professional servicing) available to the operator for
regenerating the filter. At Level 4, professional servicing is the only way
to regenerate the filter.
Parked regeneration procedure
WARNING:When performing the parked regeneration
procedure, make certain the vehicle is safely off roadway, and
the exhaust system is away from people, or any flammable materials,
vapors, or structures. Engine speed may increase during parked
regeneration.
Note:Parked regeneration is only available when the DPF lamp on the
instrument cluster is illuminated (solid or flashing).
1. Bring the vehicle to a complete stop on level ground and safely off the
road with the exhaust system away from people, flammable materials,
vapors or structures. Ford recommends that you perform a walk-around
to check before commencing parked regeneration.
2. If your vehicle is equipped with an automatic transmission and a
steering column shift lever, place transmission in P (Park). Otherwise,
place the transmission in N (Neutral).
3. Remove feet from the accelerator pedal and clutch pedal (if
equipped).
4. Set the parking brake.
5.Within 5 seconds of setting the parking brake,remove foot from
the service brake pedal.
Maintenance and Specifications
220
2012 F-650/750(f67)
Supplement, 2nd Printing
USA(fus)

The engine speed may increase slightly. To allow parked regeneration to
continue uninterrupted:
1. The vehicle must remain parked
2. The transmission must remain in P (Park) or N (Neutral) (as
previously described in Step 2).
3. The accelerator pedal, service brake pedal, and clutch pedal (if
equipped) must not be pressed
4. The parking brake must remain set
On average (depending on filter level and other factors), the process takes
20–30 minutes to complete. The DPF lamp turns off when the process is
complete. Repeat Steps 1–5, if parked regeneration is interrupted.
To discontinue parked regeneration
Press any of the floor pedals to discontinue parked regeneration.
Diesel particulate filter maintenance and service
The DPF is designed to retain a relatively large amount of residual ash
and provide many miles and hours of maintenance-free operation. At
some point, generally beyond 150,000 miles (240,000 km) or 5,000 hours
of operation (whichever comes first), the DPF requires professional
cleaning to remove the accumulated ash.
The exact number of miles or hours of operation varies greatly depending
upon vehicle/engine loading and operating conditions, ash content of the
engine oil, and quality of the diesel fuel used in your truck. Adhering to
your engine manufacturer’s recommended oil and fuel specifications
maximizes the miles and hours of operation before a DPF professional
cleaning is required. Refer to your engine manufacturer’s owner’s manual for
more details regarding recommended maintenance and service of your DPF.
Exhaust outlet assembly
WARNING:The normal operating temperature of the exhaust
system is very high. Never work around or attempt to repair any
part of the exhaust system until it has cooled. Failure to follow these
instructions may result in serious personal injury.
The exhaust outlet assembly on your vehicle is a uniquely functioning
device that accompanies the DPF assembly. It is designed to help control
the temperature of the exhaust during the DPF regeneration process.Do
not modify or remove this device. Modification of the system
Maintenance and Specifications
221
2012 F-650/750(f67)
Supplement, 2nd Printing
USA(fus)

The fluid level can also be checked by looking at the see-through plastic
reservoir. Make sure that the fluid is within the minimum and maximum
fluid range as marked on the reservoir.
To avoid damage to the power steering system,do notoperate the
vehicle with a low power steering fluid level.
Note:Refer toLubricant specificationsin this chapter for the proper
fluid type if adding fluid is necessary. A low fluid level may indicate a
leak in the power steering system. Inspect the power steering system
and repair the leak or see your dealer or a qualified technician for
service. Refer to theScheduled Maintenance Guidechapter for the
recommended service intervals.
BRAKE FLUID
Check and refill the Full Power brake fluid reservoir using the following
procedure. Refer to theScheduled Maintenance Guidechapter for the
service interval.
1. Clean the reservoir caps before removal to prevent dirt or water from
entering the reservoir.
2. Visually inspect the fluid level; it should be at the bottom of the fill
ports.
3. Add brake fluid, if necessary, from a clean, unopened container until
the level reaches the bottom of the fill ports. Do not fill above this line.
Only use a DOT 3 brake fluid certified to meet manufacturer
specifications. Refer toLubricant specificationsin this chapter.
WARNING:Brake fluid is toxic. If brake fluid contacts the eyes,
flush eyes with running water for 15 minutes. Seek medical
attention if irritation persists. If taken internally, drink water and
induce vomiting. Seek medical attention immediately.
WARNING:If you use a brake fluid that is not DOT 3, you will
cause permanent damage to your brakes.
WARNING:Do not let the reservoir for the master cylinder run
dry. This may cause the brakes to fail.
Maintenance and Specifications
224
2012 F-650/750(f67)
Supplement, 2nd Printing
USA(fus)