2021 FORD F-350 tires

Getting Assistance Outside the U.S. and
Canada .......................................................335
Ordering Additional Owner's Literature ........................................................................\
337
Reporting Safety Defects (U.S. Only) ........................................................................\
337
Reporting Safety Defects (Canada Only) ........................................................................\
337
Fuses
Fuse Specification Chart .........................
339
Changing a Fuse .........................................
346
Maintenance
General Information ..................................
348
Opening and Closing the Hood .............
348
Under Hood Overview - 6.2L .................
349
Under Hood Overview - 6.7L Diesel .....
350
Under Hood Overview - 7.3L ....................
351
Engine Oil Dipstick - 6.2L .........................
352
Engine Oil Dipstick - 6.7L Diesel ............
352
Engine Oil Dipstick - 7.3L ..........................
352
Engine Oil Check - 6.2L .............................
352
Engine Oil Check - 6.7L Diesel ...............
354
Engine Oil Check - 7.3L .............................
355
Changing the Engine Oil and Oil Filter ........................................................................\
356
Oil Change Indicator Reset .....................
356
Changing the Engine Air Filter - 6.2L ........................................................................\
357
Changing the Engine Air Filter - 6.7L Diesel ..........................................................
358
Changing the Engine Air Filter - 7.3L ....
360
Draining the Fuel Filter Water Trap - 6.7L Diesel ...........................................................
361
Engine Coolant Check - 6.2L .................
364
Engine Coolant Check - 6.7L Diesel .....
368
Engine Coolant Check - 7.3L ....................
371
Automatic Transmission Fluid Check ........................................................................\
376
Transfer Case Fluid Check ........................
377Brake Fluid Check
........................................
377
Power Steering Fluid Check ....................
378
Changing the 12V Battery ........................
379
Adjusting the Headlamps ........................
381
Washer Fluid Check ...................................
382
Fuel Filter - 6.2L/7.3L .................................
382
Checking the Wiper Blades ....................
382
Changing the Wiper Blades ....................
382
Changing a Bulb ..........................................
383
Changing the Engine-Mounted and Diesel Fuel Conditioner Module Fuel
Filters - 6.7L Diesel .................................
386
Spring U-Bolt Check - F-600 ................
389
Vehicle Care
General Information ...................................
391
Cleaning Products .......................................
391
Cleaning the Exterior .................................
392
Waxing ............................................................
393
Cleaning the Engine ...................................
393
Cleaning the Exhaust - 6.7L Diesel ......
394
Cleaning the Windows and Wiper Blades ........................................................................\
394
Cleaning the Interior ..................................
395
Cleaning the Instrument Panel and Instrument Cluster Lens .......................
397
Cleaning Leather Seats ............................
397
Repairing Minor Paint Damage .............
399
Cleaning the Wheels .................................
399
Vehicle Storage ...........................................
399
Wheels and Tires
General Information ..................................
402
Tire Care ........................................................
404
Using Snow Chains ....................................
420
Tire Pressure Monitoring System ...........
421
Changing a Road Wheel ..........................
429
Technical Specifications .........................
440
6
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Table of Contents

WHAT IS AUTOMATIC HIGH
BEAM CONTROL
The system turns on high beams if it is dark
enough and no other traffic is present. If it
detects an approaching vehicle
’s
headlamps or tail lamps, or street lighting
ahead, the system turns the high beams
off. Low beams remain on.
A camera sensor, centrally mounted
behind the windshield of your vehicle,
continuously monitors conditions to turn
the high beams on and off.
SWITCHING AUTOMATIC HIGH
BEAM CONTROL ON AND OFF
Switch the system on or off using the
information display. See General
Information (page 110).
Activating the Automatic High
Beam Control Switch the lighting control to the
autolamps position to activate.
See
Autolamps (page 88).
Note: Automatic high beams are not
available when autolamps are not turned
on.
When active, the high beams turn on if:
• The ambient light level is low enough.
• There is no traffic in front of your
vehicle.
• The vehicle speed is greater than
approximately
32 mph (52 km/h).
When active, the high beams turn off if:
• The ambient light level is high enough
that high beams are not required.
• The system detects an approaching
vehicle's headlamps or tail lamps.
• The system detects severe rain, snow
or fog. •
The camera is blocked.
• The vehicle speed falls below
approximately
27 mph (44 km/h).
Note: The deactivation speed is lower on
curves.
Note: High beam reactivation may be
delayed in certain curvy road situations.
Note: The system may not operate properly
if the sensor is blocked. Keep the windshield
free from obstruction or damage.
Note: The system may not operate properly
in cold or inclement conditions. You can
switch on the high beams by overriding the
system.
Note: If the system detects a blockage, for
example bird droppings, bug splatter, snow
or ice, the system goes into low beam mode
until you clear the blockage. A message may
appear in the information display if the
camera is blocked.
Note: Using much larger tires or equipping
vehicle accessories such as snowplows can
modify your vehicle's ride height and
degrade automatic high beam control
performance.
AUTOMATIC HIGH BEAM
CONTROL INDICATORS The indicator illuminates to
confirm when the system is
ready to assist.
OVERRIDING AUTOMATIC
HIGH BEAM CONTROL WARNING:
The system does not
relieve you of your responsibility to drive
with due care and attention. You may
need to override the system if it does not
turn the high beams on or off.
93
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Automatic High Beam Control
(If Equipped)

Direction Indicator
Illuminates when you switch on
the left or right direction
indicator or the hazard warning
flasher. If the indicators stay on or flash
faster, check for a burned out bulb.
Door Ajar Displays when the ignition is on
and any door is not completely
closed.
Electronic Locking Differential (If
Equipped) Illuminates when using the
electronic locking differential.
Engine Coolant Temperature Illuminates when the engine
coolant temperature is high.
Stop your vehicle as soon as
possible, switch off the engine and let it
cool.
Engine Oil If it illuminates with the engine
running or when you are driving,
this indicates a malfunction.
Stop your vehicle as soon as it is safe to
do so and switch the engine off. Check the
engine oil level.
See
Engine Oil Check (page 352).
Note: Do not resume your journey if it
illuminates despite the level being correct.
Have the system checked immediately.
Fasten Seatbelt Illuminates and a tone sounds
to remind you to fasten your
seatbelt. Front Airbag If it fails to illuminate when you
start your vehicle, continues to
flash or remains on, it indicates
a malfunction. Have the system checked
as soon as possible.
Front Fog Lamps
(If Equipped) Illuminates when you switch the
front fog lamps on.
High Beam Illuminates when you switch the
high beam headlamps on. It
flashes when you use the
headlamp flasher.
Hill Descent
(If Equipped) Illuminates when hill descent is
switched on.
Low Fuel Level Illuminates when the fuel level
is low or the fuel tank is nearly
empty. Refuel as soon as
possible.
Low Tire Pressure Warning Illuminates when the tire
pressure in one or more tires is
below the correct tire pressure.
It also illuminates momentarily when you
switch the ignition on to confirm the lamp
is functional. If it does not illuminate when
you switch the ignition on, or begins to
flash at any time, have the system checked
as soon as possible.
107
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Instrument Cluster E163170 E71880 E67017 E163171

Tire Pressure Monitoring System
Action
Message
One or more tires on your vehicle has low tire pressure. See
Tire Pressure Monitoring System (page 421).
Tire Pressure Low
The tire pressure monitoring system is malfunctioning. If thewarning stays on or continues to come on, contact an
authorized dealer. See
Tire Pressure Monitoring System (page 421).
Tire Pressure Monitor
Fault
A tire pressure sensor is malfunctioning or your spare tire is inuse. See
Tire Pressure Monitoring System (page 421). If
the warning stays on or continues to come on, contact an authorized dealer as soon as possible.
Tire Pressure Sensor
Fault
Trail Control
(If Equipped) Action
Message
You must reduce your vehicle speed to use trail control.
Reduce Speed To Enter Trail
Control
You must release the park brake to use trail control.
Trail Control Not Available with
Park Brake Applied
You successfully enabled trail control and must pressSET to activate.
Trail Control Enabled Use SET
Button to Set Speed
A trail control system fault has occurred, the drivermust resume control.
Trail Control Off Driver Resume
Control
The system has switched off.
Trail Control Off
A system fault is present.
Trail Control Fault See Manual
You must switch the cruise control off to use trailcontrol.
Trail Control Not Available with
Cruise Control Active
You must close the door to use trail control.
Trail Control Not Available with
Driver Door Open
You switched descent control off, causing the systemto turn trail control propulsion off. The vehicle still
brakes if descending a hill. You must press the trail
control switch to reset the system and switch it off.
You can press the switch again to switch this system on.
Descent Control Now Active
Press Trail Control Switch To Exit
136
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Information Displays

Action
Message
One or more tires on your trailer is below the specifiedtire pressure.
Trailer Tire Low Specified:
A trailer tire pressure sensor is malfunctioning. If the
warning stays on or continues to come on, contact an authorized dealer as soon as possible.
Trailer Tire Pressure Sensor
Fault
The trailer tire pressure monitoring system is
malfunctioning. If the warning stays on or continues to come on, contact an authorized dealer.
Trailer Tire Pressure Monitor
Fault
The system cannot detect the trailer tire pressuremonitoring system.
Trailer Tire Pressure Monitor
Capability Not Detected
The trailer tire pressure monitoring system is not setup.See Tire Pressure Monitoring System (page 421).
Trailer Tire Pressure Indication
Not Setup See Manual
4WD Action
Message
A 4X4 system fault is present. Contact an authorizeddealer as soon as possible.
Check 4x4
The 4X4 system is making a shift.
4x4 Shift in Progress
Displays when you attempt to switch to 4X4 LOW andyou do not shift the transmission to neutral (N).
For 4x4 LOW Shift to N
Displays when you attempt to switch to 4X4 LOW andyour vehicle's speed is too fast.
For 4x4 LOW Slow to 3 MPH
For 4x4 LOW Slow to 5 km/h Displays when you attempt to switch out of 4X4 LOWand you do not shift the transmission to neutral (N)
To Exit 4x4 LOW Shift to N
Displays when you attempt to switch out of 4X4 LOWand your vehicle's speed is too fast.
To Exit 4x4 LOW Slow to 3 MPH
To Exit 4x4 LOW Slow to 5 km/h
Could display when there is a Transfer case gear toothblockage while shifting to or from 4L or to the neutral state.
Shift Delayed Pull Forward
Displays when the system requires an additional
transmission shift to neutral (N) to complete a transfer case shift.
Shift to Neutral
138
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Information Displays

4. Place your fingers into the hole where
you removed the gearshift lever boot
and pull the top half of the shroud up
and forward to separate it from the
lower half of the shroud. There is a
hinge at the forward edge of the top
shroud. Roll the top half of the shroud
upward on the hinge point, then pull
straight rearward toward the driver
seat to remove.
5. Remove the top half of the shroud.
6. Remove the three fasteners under the column that secure the lower shroud
half to the column. 7. Pull the lock lever into the fully
unlocked position and remove the
lower shroud cover by pulling the lever
handle through the slot in the cover.
8. Apply the brake. Gently lift the override
disk and move the gearshift lever into
neutral (N). 9. Start your vehicle.
Perform steps 4 through 8 in reverse order
to get the shroud back together, making
sure to engage the hinge pivots between
the upper and lower halves of the shroud.
Keep slight pressure in the forward
direction as you rotate the halves together.
If Your Vehicle Gets Stuck in Mud
or Snow
If your vehicle is stuck in mud or snow, you
can rock it out by shifting between forward
and reverse gears, stopping between shifts
in a steady pattern. Press lightly on the
accelerator in each gear.
Note:
Do not rock your vehicle if the engine
is not at normal operating temperature or
damage to the transmission could occur.
Note: Do not rock your vehicle for more
than a minute or damage to the
transmission and tires could occur, or the
engine could overheat.
211
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- TransmissionE163185 E163186

USING FOUR-WHEEL DRIVE
Note:
For important information regarding
the safe operation of this type of vehicle,
see General Information in the Wheels and
Tires chapter.
Note: Do not use 4H or 4L mode on dry,
hard surfaced roads. Doing so can produce
excessive noise, increase tire wear and may
damage drive components. 4X4 mode is
only intended for consistently slippery or
loose surfaces. Use of 4L mode on these
surfaces may produce some noise, such as
occasional clunks, but will not damage drive
components.
Note: If 4X4 low is selected while the
vehicle is moving above 3 mph (5 km/h),
the 4WD system will not perform a shift.
This is normal and should be no reason for
concern. Refer to Shifting to or from 4L (4X4
Low) for proper operation.
Note: You can switch on and switch off the
electronic locking differential by pulling the
4WD control (4WD vehicles) or turning the
electronic locking differential control (2WD
vehicles). See
Electronic Locking
Differential (page 221).
Electronic Shift-On-the-Fly
(ESOF) 4WD system
(If Equipped)
Note: If 4X4 Low is selected while the
vehicle is moving above
3 mph (5 km/h),
the 4WD system will not perform a shift.
This is normal and should be no reason for
concern. Refer to Shifting to or from 4L (4X4
Low) for proper system operation.
Note: Auto-manual hub locks can be
manually locked by rotating the hub lock
control from AUTO to LOCK. For proper operation, make sure that each
hub is fully engaged and that both hub
locks are set to the same position (both
set to LOCK or both set to AUTO). To
engage LOCK, turn the hub locks
completely clockwise; to engage AUTO,
turn the hub locks completely
counterclockwise.
The ESOF 4WD system:
•
Provides 4x4 High engagement and
disengagement while the vehicle is
moving.
• Is operated by a rotary control located
on the instrument panel that allows
you select 4x2, 4x4 High or 4x4 Low
operation.
• Uses auto-manual hub locks that can
be engaged and disengaged
automatically based on the 4x4 mode
selected.
• Will increase fuel economy when used
in the hub lock's recommended AUTO
mode.
4WD Indicator Lights
Note: When a 4X4 system fault is present,
the system will typically remain in whichever
4X4 mode was selected prior to the fault
condition occurring. It will not default to 4X2
in all circumstances. When this warning is
displayed, have your vehicle serviced by an
authorized dealer.
213
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Four-Wheel Drive
(If Equipped)LOC K
OTUAE339076

Note:
4x4 low mode is not intended for use
on dry pavement.
1. Bring the vehicle to a speed of 3 mph
(5 km/h) or less.
2. Place the transmission in neutral (N).
3. Move the 4WD control to the preferred
position.
The information display will display a
message indicating a 4X4 shift is in
progress. The information display will then
display the system mode selected. If any
of the above shift conditions are not met,
the shift will not occur and the information
display will display information guiding the
driver through the proper shifting
procedures.
If a message in the information display
shows a Shift Delayed Pull Forward
message, a transfer case gear tooth
blockage is present. To alleviate this
condition, place the transmission in a
forward gear, move the vehicle forward
approximately
5 ft (1.5 m), and shift the
transmission back to neutral to allow the
transfer case to complete the range shift.
Entering and Exiting Rock Crawl
Mode with Tremor Package
(If
Equipped) •
To enter rock crawl, your vehicle must
be in 4x4 low.
• Press the drive mode button on the
shifter column to bring up the
information display and select rock
crawl mode.
• With the switch in 4x4 low position,
press rock crawl mode again to
deactivate it. •
You can now perform a shift out of 4x4
low.
• Refer to Shifting to or from 4L (4x4
low) as described previously for proper
operation of 4x4 low in this procedure.
Operating 4WD Vehicles with
Spare or Mismatched Tires
On four-wheel drive vehicles, the size of
the spare tire can affect the 4X4 system.
If there is a significant difference between
the size of the spare tire and the remaining
tires, you may have limited four-wheel
drive functionality.
When driving with the full-size, dissimilar
spare wheel and tire assembly, we
recommend that you do not:
• Exceed
50 mph (80 km/h) with a 4WD
mode turned on.
• Turn on a 4WD mode unless the
vehicle is stationary.
• Use a 4WD mode on dry pavement.
When driving with the full-size, dissimilar
spare wheel and tire assembly, you may
have limited 4WD functionality, especially
when driving in a mechanically locked 4WD
mode. You may experience the following:
• Additional noise from the transfer case
or other drive components.
• Difficulty shifting out of a mechanically
locked 4WD mode.
Use of a dissimilar spare wheel and tire
assembly may lead to impairment of the
following:
• Comfort and noise.
• Winter weather driving capability.
• Wet driving capability.
• Four-wheel drive capability.
215
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Four-Wheel Drive
(If Equipped)E225315