weight FORD SUPER DUTY 2021 Service Manual

Sustained High-speed Driving at Gross Vehicle Weight Rating (Maximum Loaded Weight
for Vehicle Operation)
Inspect the engine and secondary cooling system coolant
concentration (freeze-point protection) and additive
(corrosion inhibitor) strength. If your vehicle has orange-
colored coolant, add coolant additive if necessary.
Every 30,000 mi
(48,000 km) or 1200 engine
hours
Flush and refill the coolant. Do not add coolant additive.
Every
60,000 mi
(96,000 km) or 2400
engine hours
Note: If your vehicle has orange-colored coolant and you add coolant additive, do not
exceed the specified maximum of 48 fluid ounces (1.4 liters) for the engine and 16 fluid
ounces (473 ml) for the secondary cooling system. Operating the engine with excessive
coolant additive may cause overheating which could lead to severe, permanent engine
damage.
Note: After the initial coolant flush and fill at
60,000 mi (96,000 km) or 2400 engine
hours, flush and fill every 45,000 mi (72,000 km) or 1800 engine hours thereafter. Operating in Sustained Ambient Temperatures Below -9°F (-23°C) or Above 100°F (38°C)
Change the engine oil and filter as indicated by the
information display, and perform the services listed in the
scheduled maintenance chart.
As required
Replace the engine-mounted and frame-mounted fuel
filters.
Every
15,000 mi
(24,000 km), six months or
600 engine hours
Replace the wheel bearing grease and grease seals if using
non-sealed bearings. (Two-wheel drive vehicles)
Every
30,000 mi
(48,000 km) Operating in Dusty or Sandy Conditions (Such as Unpaved or Dusty Roads)
Rotate the tires, inspect the tires for wear and measure
tread depth.1
Every
7,500 mi (12,000 km)
Inspect the brake system pads and rotors.
Inspect the air filter restriction gauge. Replace the filter if
necessary.
Inspect the steering and suspension ball joints and tie rods.
Lubricate any grease fittings.
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Scheduled Maintenance

specification WSL-M2C192-A, part number
XY-75W140-QL, or equivalent. Add friction
modifier XL-3 (EST-M2C118-A) or
equivalent for complete refill of
Traction-Lok rear axles. See Capacities
and Specifications (page 441).
Additional Axle Maintenance for Dual
Rear Wheels
Change rear axle fluid every
250,000 mi
(400,000 km) under normal driving
conditions on all commercial applications.
When operating your vehicle at or near
maximum gross vehicle weights, change
the rear axle fluid every
60,000 mi
(96,000 km). In addition, follow this
60,000 mi (96,000 km) schedule when
operating your vehicle under the special
operating conditions where noted.
California Fuel Filter Replacement
If you register your vehicle in California, the
California Air Resources Board has
determined that the failure to perform this
maintenance item does not nullify the
emission warranty or limit recall liability
before the completion of your vehicle's
useful life. Ford Motor Company, however,
urges you to have all recommended
maintenance services performed at the
specified intervals and to record all vehicle
service.
Hot Climate Oil Change Intervals
Vehicles operating in the Middle East,
North Africa, Sub-Saharan Africa or
locations with similar climates using an
American Petroleum Institute (API)
Certified for Gasoline Engines (Certification
mark) oil of SM or SN quality, the normal
oil change interval is 3,000 mi (5,000 km).
If the available API SM or SN oils are not
available, then the oil change interval is
2,000 mi (3,000 km)
. Engine Air Filter and Cabin Air Filter
Replacement
The life of the engine air filter and cabin air
filter is dependent on exposure to dusty
and dirty conditions. Vehicles operated in
these conditions require frequent
inspection and replacement of the engine
air filter and cabin air filter.
Diesel Particulate Filter
Over time, a slight amount of ash builds
up in the diesel particulate filter, which is
not removed during the regeneration
process. The filter may need to be replaced
with a new or remanufactured part at
approximately 250,000 mi (400,000 km).
Actual mileage varies depending on engine
and vehicle operating conditions.
In this case, the engine control system sets
a service light (wrench icon) to inform you
to bring your vehicle to the dealer for
service. If there are any issues with the
oxidation catalyst or particulate filter
system, a service light (wrench or engine
icon) sets by the engine control system to
inform you to bring your vehicle into a
dealer for service.
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Scheduled Maintenance

Pre-Collision Assist.....................................264
Adjusting the Pre-Collision Assist
Settings............................................................ 266
Blocked Sensors................................................. 267
Distance Indication and Alert....................... 265
Using the Pre-Collision Assist System.............................................................. 264
Protecting the Environment
........................19
Puncture See: Changing a Road Wheel....................... 429
R
Radio Frequency Certification Labels...........................................................584
Blind Spot Information System Sensors............................................................ 584
Body Control Module....................................... 588
Cruise Control Module.................................... 590
Garage Door Opener........................................ 594
Keys and Remote Controls............................ 594
Passive Anti-Theft System............................ 599
Radio Transceiver Module............................. 603
SYNC...................................................................... 605
Tire Pressure Monitoring System Sensors............................................................. 610
Wireless Accessory Charging Module.........614
Rear Axle Fluid Capacity and Specification - Diesel..............................467
Rear Axle - 10.5................................................... 467
Rear Axle - 10.8.................................................. 468
Rear Axle - 11.8 .................................................. 468
Rear Axle Fluid Capacity and Specification - Gasoline........................469
Rear Axle - 10.5.................................................. 469
Rear Axle - 10.8................................................... 470
Rear Axle - 11.8 ................................................... 470
Rear Axle - 11.8 (With Heavy Duty Tow Option)............................................................... 471
Rear Axle
..........................................................221
Rear Occupant Alert System Audible Warnings.......................................................163
Rear Occupant Alert System Indicators - Vehicles With: SYNC 3..........................163
Rear Occupant Alert System Indicators - Vehicles With: SYNC..............................163
Rear Occupant Alert System Limitations...................................................162 Rear Occupant Alert System
Precautions..................................................162
Rear Occupant Alert System...................162
Rear Parking Aid
...........................................234
Obstacle Distance Indicator.......................... 235
Rear Seats
.......................................................158
Folding Up the Rear Seat Cushion ..............158
Rear Under Seat Storage................................. 159
Returning the Seat to the Seating Position.............................................................. 159
Rear View Camera
.......................................235
Camera Guidelines............................................ 236
Obstacle Distance Indicator........................... 237
Rear Camera Delay............................................ 237
Using the Rear View Camera System........236
Rear View Camera See: Rear View Camera................................... 235
Recommended Towing Weights...........300 Calculating the Maximum Loaded Trailer
Weight for Your Vehicle.............................. 304
Refueling - Diesel
.........................................190
Dual Fuel Tanks................................................... 192
Fueling Tips............................................................ 191
Refueling................................................................. 191
Refueling - Gasoline
....................................189
Fuel Filler Cap...................................................... 190
Remote Control..............................................55 Car Finder............................................................... 60
Integrated Keyhead Transmitter..................... 55
Intelligent Access Key.........................................56
Memory Feature................................................... 59
Replacing the Battery......................................... 57
Sounding the Panic Alarm............................... 60
Remotely Starting the Engine
.................140
Remotely Stopping the Engine................141
Remote Start Limitations.........................140
Remote Start Remote Control Indicators.......................................................141
Remote Control Feedback............................... 141
Remote Start
.................................................140
Remote Start Settings....................................... 141
Remote Start Settings
.................................141
Setting the Remote Start Duration..............142
Switching Climate Control Auto Mode On
and Off................................................................ 141
Switching Climate Control Last Settings On and Off......................................................... 141
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Voice Settings......................................................
521
Utilizing the Mediation/Arbitration Program (Canada Only)........................335
V
Vehicle Care
....................................................391
General Information.......................................... 391
Vehicle Identification Number
................473
Locating the Vehicle Identification
Number............................................................. 473
Vehicle Identification Number Overview........................................................... 473
Vehicle Identification
..................................473
Vehicle Identification Number...................... 473
Vehicle Storage
............................................399
Body....................................................................... 399
Brakes................................................................... 400
Cooling system.................................................. 400
Disconnecting Your 12 Volt Battery............400
Engine................................................................... 400
Fuel system......................................................... 400
General.................................................................. 399
Miscellaneous.................................................... 400
Removing Vehicle From Storage................400
Tires....................................................................... 400
Vehicle Wi-Fi Hotspot
................................478
Ventilated Seats............................................161
Ventilation See: Climate Control - Vehicles With:
Automatic Temperature Control.............143
See: Climate Control - Vehicles With: Manual Temperature Control.................................... 147
Voice Control
...................................................82
W
Warning Lamps and Indicators...............105 Adaptive Cruise Control................................... 105
Adaptive Steering............................................... 105
Anti-Lock Braking System.............................. 105
Automatic High Beam...................................... 105
Battery.................................................................... 106
Blind Spot Monitor............................................ 106
Brake System Warning Lamp........................ 106
Check 4X4............................................................ 106
Check Fuel Cap................................................... 106
Cruise Control...................................................... 106Diesel Engine Brake...........................................
106
Diesel Exhaust Fluid.......................................... 106
Direction Indicator.............................................. 107
Door Ajar................................................................ 107
Electronic Locking Differential....................... 107
Engine Coolant Temperature......................... 107
Engine Oil............................................................... 107
Fasten Seatbelt................................................... 107
Four-Wheel Drive Indicators.......................... 109
Front Airbag.......................................................... 107
Front Fog Lamps................................................. 107
High Beam............................................................. 107
Hill Descent........................................................... 107
Low Fuel Level..................................................... 107
Low Tire Pressure Warning.............................. 107
Powertrain Malfunction/Reduced Power/Electronic Throttle Control.........108
Service Engine Soon......................................... 108
Stability Control.................................................. 108
Stability Control Off.......................................... 108
Tailgate Ajar......................................................... 108
Transmission Tow/Haul................................... 108
Wait To Start........................................................ 108
Water In Fuel........................................................ 108
Washer Fluid Check....................................382
Washer Fluid Specification.......................461
Washers See: Cleaning the Exterior.............................. 392
See: Wipers and Washers................................. 85
Waxing.............................................................393
What Is Automatic High Beam Control............................................................93
What Is Cruise Control...............................242 Requirements...................................................... 242
What Is Remote Start.................................140
What Is the Cabin Air Filter.......................150
What Is the Gross Axle Weight Rating.............................................................272
GAWR (Gross Axle Weight Rating).............272
What Is the Gross Combined Weight Rating.............................................................273
What Is the Gross Vehicle Weight Rating.............................................................272
What Is the Maximum Loaded Trailer Weight...........................................................272
What is the Rear Occupant Alert System...........................................................162
What Is Trail Control....................................231
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Index