2021 FORD F-350 tow

Driver Alert
Action
Message
Stop and rest as soon as it is safe to do so.
Driver Alert Warning Rest
Now
Take a rest soon.
Driver Alert Warning Rest
Suggested
Drivetrain Action
Message
The electronic locking differential requests that you slow toa certain speed to engage.
To Engage Locking
Differential Slow to XX mph/km/h
The electronic locking differential requests that you releasethe accelerator in order to engage.
To Engage Locking
Differential Release Accelerator Pedal
An electronic locking differential (ELD) system fault is
present. Contact an authorized dealer as soon as possible.
Check Locking Differen-
tial
The transfer case is in the neutral position. This message
indicates that your vehicle is safe to tow with all four wheels on the ground.
Neutral Tow Enabled
Leave Transmission in Neutral
The transfer case is NOT in the neutral position. This messageindicates that your vehicle is NOT safe to be towed with all four wheels on the ground.
Neutral Tow Disabled
Engine Action
Message
The engine has reduced power to help reduce highengine temperature.
Power Reduced to Lower Engine
Temp
129
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Information Displays

Action
Message
Displays when you must switch off the trailer backupassist to use trail control.
Trail Control Not Available
While Pro Trailer Backup Assist™ Active
Displays when the system detects that you could bestuck in sand and turns trail control on to the lowest set speed.
Set Trail Control to 1 MPH to Aid
in Getting Unstuck in Sand
Set Trail Control to 2 km/h to
Aid in Getting Unstuck in Sand
Trailer Action
Message
The current gain setting for the trailer brake.
Trailer Brake Gain: {trailer gain
value:#0.0}
The current gain setting for the trailer brake when youdo not have a trailer connected.
Trailer Brake Gain: {trailer gain
value:#0.0} No Trailer
Faults sensed in the Integrated Trailer Brake ControlModule followed by a single chime. See Towing a
Trailer (page 282).
Trailer Brake Module Fault
The system detects a correct trailer connection duringa given ignition cycle.
Trailer Connected
The system senses a trailer connection becomes
disconnected, either intentionally or unintentionally, during a given ignition cycle.
Trailer Disconnected
The trailer sway control has detected trailer sway.
Trailer Sway Reduce Speed
There are certain faults in your vehicle wiring and trailer
wiring/brake system. See Towing a Trailer (page 282).
Trailer Wiring Fault
There is a fault with your trailer turn lamp. Check yourlamp.
Trailer Left Turn Lamps Fault
Check Lamps
There is a fault with your trailer turn lamp. Check yourlamp.
Trailer Right Turn Lamps Fault
Check Lamps
There is a fault with your trailer battery. See
Towing
a Trailer (page 282).
Trailer Battery Not Charging See
Manual
There is a fault with your vehicle trailer lighting module.See
Towing a Trailer (page 282).
Trailer Lighting Module Fault
See Manual
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Information Displays

An energy absorbing head
restraint.
A
Two steel stems.
B
Guide sleeve unlock and remove
button.
C
Removing the Head Restraint
1. Press and hold buttons C.
2. Pull up the head restraint.
Installing the Head Restraint
Align the steel stems into the guide sleeves
and push the head restraint down until it
locks.
Front Seat Center Head Restraint
Your vehicle may have a front row center
head restraint that you cannot adjust or
remove.
Tilting Head Restraints (If Equipped)
The front head restraints tilt for extra
comfort. 1. Adjust the seat backrest to an upright
driving or riding position.
2. Pivot the head restraint forward toward
your head to the desired position.
After the head restraint reaches the
forward-most tilt position, pivot it forward
again to release it to the rearward, un-tilted
position.
Note: Do not attempt to force the head
restraint backward after you tilt it. Instead,
continue tilting it forward until the head
restraint releases to the upright position.
MANUAL SEATS (IF EQUIPPED) WARNING:
Do not adjust the
driver's seat or seatback when your
vehicle is moving.
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- SeatsA
C
B E162872 E144727

CENTER CONSOLE (IF EQUIPPED)
Stow items in the cup holder carefully as
items may become loose during hard
braking, acceleration or crashes, including
hot drinks which may spill.
Available console features include: Storage compartment.
A
Front storage compartment with
USB ports.
B
Sliding cup holder.
C
Center storage compartment
with auxiliary power point.
D
Rear cup holders.
E
Auxiliary power point.
F
Heated rear seats.
G
AC power point.
H
USB charging ports.
I OVERHEAD CONSOLE (IF
EQUIPPED) Press near the rear edge of the door to
open it.
UNDER SEAT STORAGE
(IF
EQUIPPED)
Front Under Seat Storage
Compartment - Vehicles Without
Locking Storage Lift the latch to open the lid and access to
the storage compartment under the center
seat cushion.
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Storage CompartmentsE250516 E224959 E306120

2.
Lift the front and side panels to expand
and lock them in place. 3. Lock the panels in an open position. 4. To collapse, release the lever, push
down to the stowed position and fold
in the side and front panels.
Note: Make sure the storage divider is not
locked into place when collapsing. Push the
button to release the divider door and swing
it to the stowed position on the front wall.
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Storage CompartmentsE235008 E235009

Note:
The heater is most effective when
outdoor temperatures are below 0°F
(-18°C).
For cold climates that are below
0°F
(-18°C) needing a temporary battery
installation. Order the cold climate pack.
The heater acts as a starting aid by
warming the engine coolant. This allows
the climate control system to respond
quickly. The equipment includes a heater
element (installed in the engine block) and
a wire harness. You can connect the
system to a grounded 120-volt AC
electrical source. We recommend that you do the following
for a safe and correct operation:
•
Make sure your vehicle is parked in a
clean area, clear of combustibles.
• Locate the block heater cord near the
center of the lower front fascia.
• Use a 16-gauge outdoor extension cord
that is product certified by
Underwriter ’s Laboratory (UL) or
Canadian Standards Association
(CSA). This extension cord must be
suitable for use outdoors, in cold
temperatures, and be clearly marked
Suitable for Use with Outdoor
Appliances. Do not use an indoor
extension cord outdoors. This could
result in an electric shock or become a
fire hazard. •
Use as short an extension cord as
possible.
• Do not use multiple extension cords.
• Make sure that when in operation, the
extension cord plug and heater cord
plug connections are free and clear of
water. This could cause an electric
shock or fire.
• Make sure the heater, heater cord and
extension cord are firmly connected.
• Check for heat anywhere in the
electrical hookup once the system has
been operating for approximately 30
minutes.
• Make sure the system is unplugged and
properly stowed before starting and
driving your vehicle. Make sure the
protective cover seals the prongs of the
block heater cord plug when not in use.
• Make sure the heater system is
checked for proper operation before
winter.
Using the Engine Block Heater
Make sure the receptacle terminals are
clean and dry prior to use. Clean them with
a dry cloth if necessary.
The heater uses 0.4 to 1.0 kilowatt-hours
of energy per hour of use. The system does
not have a thermostat. It achieves
maximum temperature after
approximately three hours of operation.
Using the heater longer than three hours
does not improve system performance and
unnecessarily uses electricity.
183
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Starting and Stopping the EngineE308417

FUEL QUALITY - E85
Choosing the Right Fuel - Flex Fuel
Vehicles
Flex fuel vehicles have one of the following
identifiers:
•
Yellow fuel filler cap.
• Yellow bezel around the fuel filler inlet.
• Yellow fuel filler housing.
• Yellow E85 label on the fuel tank filler
door. Your vehicle is designed to operate on
regular unleaded gasoline with a minimum
pump (R+M)/2 octane rating of 87 or
regular unleaded gasoline blended with a
maximum of 85% ethanol (E85).
Some fuel stations, particularly those in
high altitude areas, offer fuels posted as
regular unleaded gasoline with an octane
rating below 87. The use of these fuels
could result in engine damage that will not
be covered by the vehicle warranty.
For best overall vehicle and engine
performance, premium fuel with an octane
rating of 91 or higher is recommended. The
performance gained by using premium fuel
is most noticeable in hot weather as well
as other conditions, for example when
towing a trailer. See Towing (page 282).Do not be concerned if the engine
sometimes knocks lightly. However, if the
engine knocks heavily while using fuel with
the recommended octane rating, contact
an authorized dealer to prevent any engine
damage.
We recommend Top Tier detergent
gasolines, where available to help minimize
engine deposits and maintain optimal
vehicle and engine performance. For
additional information, refer to
www.toptiergas.com.
Note:
Use of any fuel for which the vehicle
was not designed can impair the emission
control system, cause loss of vehicle
performance, and cause damage to the
engine which may not be covered by the
vehicle Warranty.
Do not use:
• Diesel fuel.
• Fuels containing kerosene or paraffin.
• Fuels containing more than 85%
ethanol or E100 fuel.
• Fuels containing methanol.
• Fuels containing metallic-based
additives, including manganese-based
compounds.
• Fuels containing the octane booster
additive, methylcyclopentadienyl
manganese tricarbonyl (MMT).
• Leaded fuel, using leaded fuel is
prohibited by law.
The use of fuels with metallic compounds
such as methylcyclopentadienyl
manganese tricarbonyl (commonly known
as MMT), which is a manganese-based
fuel additive, will impair engine
performance and affect the emission
control system.
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Fuel and RefuelingE161513

Switching Between E85 and
Gasoline
We do not recommend repeatedly
alternating between E85 and gasoline. If
you switch from using E85 to gasoline, or
from gasoline to E85, add as much fuel as
possible, at least half a tank. Drive your
vehicle immediately for a minimum of 5 mi
(8 km) to allow it to adapt to the change
in ethanol concentration. If you use E85
exclusively, we recommend that you fill
the fuel tank with regular unleaded
gasoline at each scheduled oil change.
FUEL QUALITY - GASOLINE
Choosing the Right Fuel Your vehicle is designed to operate on
regular unleaded gasoline with a minimum
pump (R+M)/2 octane rating of 87.
Some fuel stations, particularly those in
high altitude areas, offer fuels posted as
regular unleaded gasoline with an octane
rating below 87. The use of these fuels
could result in engine damage that will not
be covered by the vehicle warranty.
For best overall vehicle and engine
performance, premium fuel with an octane
rating of 91 or higher is recommended. The
performance gained by using premium fuel
is most noticeable in hot weather as well
as other conditions, for example when
towing a trailer. See
Towing (page 282). Do not be concerned if the engine
sometimes knocks lightly. However, if the
engine knocks heavily while using fuel with
the recommended octane rating, contact
an authorized dealer to prevent any engine
damage.
We recommend Top Tier detergent
gasolines, where available to help minimize
engine deposits and maintain optimal
vehicle and engine performance. For
additional information, refer to
www.toptiergas.com.
Note:
Use of any fuel for which the vehicle
was not designed can impair the emission
control system, cause loss of vehicle
performance, and cause damage to the
engine which may not be covered by the
vehicle Warranty.
Do not use:
• Diesel fuel.
• Fuels containing kerosene or paraffin.
• Fuel containing more than 15% ethanol
or E85 fuel.
• Fuels containing methanol.
• Fuels containing metallic-based
additives, including manganese-based
compounds.
• Fuels containing the octane booster
additive, methylcyclopentadienyl
manganese tricarbonyl (MMT).
• Leaded fuel, using leaded fuel is
prohibited by law.
The use of fuels with metallic compounds
such as methylcyclopentadienyl
manganese tricarbonyl (commonly known
as MMT), which is a manganese-based
fuel additive, will impair engine
performance and affect the emission
control system.
186
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Fuel and RefuelingE161513