2021 FORD F650/750 trailer

Rear Axle Maintenance
A rear axle fluid change or level check is
not required unless you suspect a leak or
the assembly has been submerged in
water. During long periods of trailer towing
with outside temperatures above 70°F
(21°C), and at wide-open throttle for long
periods above 45 mph (72 km/h), change
the rear axle fluid every 24,000 mi
(38,000 km) or three months, whichever
comes first.
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. We, however, urge you to have
all recommended maintenance services
performed at the specified intervals and
to record all vehicle service.
Hot Climate Oil Change Intervals
The normal oil change interval is 3,000 mi
(5,000 km) for gasoline vehicles operating
in the Middle East, North Africa,
Sub-Saharan Africa or locations with
similar climates using American Petroleum
Institute (API) oils Certified for Gasoline
Engines and displaying the API Certification
Mark. If API Certified Oils are not available,
then it is acceptable to use API SM or SN
oils. If API oils are not available, then the
oil change interval is 1,750 mi (3,000 km). Engine Air Filter Replacement
The life of the engine 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.
SCHEDULED MAINTENANCE
RECORD
After the scheduled maintenance services
are performed, record the Repair Order #,
Distance and Engine Hours in the boxes
provided.
337
F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Scheduled Maintenance

2
2-Speed Rear Axle.......................................129
Axle Shifting......................................................... 129
A
A/C See: Climate Control........................................... 79
About This Manual
...........................................7
Diesel Engine Information................................... 8
Minor Troubleshooting Guide............................ 9
Warnings.................................................................... 8
ABS See: Brakes........................................................... 130
ABS driving hints See: Hints on Driving With Anti-Lock
Brakes.................................................................. 131
Accessories.....................................................315
Accessories See: Replacement Parts
Recommendation............................................. 17
ACC See: Using Adaptive Cruise Control............148
Adjusting the Headlamps........................240 Horizontal Aim Adjustment............................ 241
Vertical Aim Adjustment................................ 240
Adjusting the Steering Wheel
....................52
Air Brakes.........................................................135
Air Chamber Stroke Indication...................... 135
Cam Brakes - Automatic Slack Adjusters........................................................... 136
Emergency Air Brake......................................... 136
Air Conditioning See: Climate Control........................................... 79
Air Filter See: Changing the Engine Air Filter - 6.7L
Diesel.................................................................. 221
See: Changing the Engine Air Filter - 7.3L...................................................................... 223
Air Induction System Inspection............247 Chassis-mounted Charge Air Cooler..........247
Air Suspension
..............................................169
Air Suspension Dump Button........................ 169
Connecting and Disconnecting a Trailer with Air Suspension and Air Suspension
Dump Button.................................................. 169
Suspension Conversions................................. 169System Indicator Light.....................................
169
Appendices....................................................348
At a Glance
........................................................22
Audible Warnings and Indicators.............69 Headlamps On Warning Chime..................... 69
Key in Ignition Warning Chime........................ 69
Parking Brake On Warning Chime.................69
Audio System
................................................307
General Information......................................... 307
Audio Unit
.......................................................307
Accessing the Sound Settings..................... 308
Accessing the System Settings................... 308
Adjusting the Volume...................................... 308
Changing Radio Stations............................... 308
Pausing or Playing Media............................... 308
Returning to the Previous Screen...............308
Scrolling Through the Menu Options........308
Selecting a Menu Option............................... 309
Selecting Media................................................. 308
Selecting the Radio.......................................... 309
Setting a Memory Preset............................... 309
Switching the Audio Unit On and Off........309
Using a Cell Phone........................................... 309
Using Seek, Fast Forward and Reverse............................................................. 309
Autolamps........................................................56 Windshield Wiper Activated
Headlamps........................................................ 56
Automatic High Beam Control..................57 Automatic High Beam Indicator..................... 58
Switching the System On and Off.................57
Automatic Transmission............................122 Brake-Shift Interlock......................................... 125
If Your Vehicle Gets Stuck in Mud or Snow................................................................... 126
Progressive Range Selection - PRS.............125
Understanding the Shift Positions of a 6– Speed Automatic Transmission.........122
Understanding Your SelectShift™ Automatic Transmission............................. 123
Automatic Transmission Fluid Check............................................................236
Transmission Fluid Level................................. 236
Auxiliary Power Points
.................................89
110 Volt AC Power Point.................................... 89
12 Volt DC Power Point...................................... 89
Locations................................................................ 89
377
F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Index

Driving Aids.....................................................156
Driving Hints....................................................176
Driving Through Water...............................180
Operation in Standing Water......................... 180
DRL See: Daytime Running Lamps......................... 57
E
Economical Driving.......................................177
Electrical System Inspection...................247 Accessory Feed Connections........................ 247
Electromagnetic Compatibility
..............348
Electronic Locking Differential................128 Activating the Electronic Locking
Differential....................................................... 128
Driver-Controlled Electronic Locking Differential....................................................... 128
Servicing a Vehicle with an Electronic Locking Differential....................................... 129
Emission Law.................................................109 Noise Emissions Warranty, Prohibited
Tampering Acts and Maintenance...........110
Tampering With a Noise Control System.............................................................. 109
End User License Agreement...................351 VEHICLE SOFTWARE END USER LICENSE
AGREEMENT (EULA) .................................. 351
Engine Block Heater
......................................97
Using the Engine Block Heater........................ 97
Engine Coolant Check - 6.7L Diesel.......231 Adding Coolant.................................................... 231
Checking Coolant Corrosion Inhibitor Additive Strength ......................................... 234
Coolant Change.................................................. 235
Engine and Secondary Cooling System Refill Procedure............................................. 233
Engine-driven Cooling Fan (Fan Clutch).............................................................. 235
Recycled Coolant............................................... 233
Severe Climates................................................. 234
Engine Coolant Check - 7.3L....................226 Adding Coolant................................................... 227
Coolant Change................................................. 229
Engine Coolant Temperature Management.................................................. 230
Engine-driven Cooling Fan (Fan Clutch).............................................................. 229Fail-Safe Cooling...............................................
229
Recycled Coolant............................................... 228
Severe Climates................................................. 228
Engine Emission Control...........................109
Engine Idle Shutdown..................................96
Engine Immobilizer See: Passive Anti-Theft System...................... 51
Engine Oil Check - 6.7L Diesel
.................218
Adding Engine Oil............................................... 219
Engine lubrication for severe service operation .......................................................... 219
Engine Oil Check - 7.3L
................................217
Adding Engine Oil................................................ 217
Engine Oil Dipstick - 6.7L Diesel..............217
Engine Oil Dipstick - 7.3L............................217
Engine Specifications - 6.7L Diesel
........281
Drivebelt Routing................................................ 281
Engine Specifications - 7.3L.....................282 Drivebelt Routing............................................... 283
Entering, Exiting or Climbing on This Vehicle
.............................................................20
Environment......................................................21
Essential Towing Checks............................173 Before Towing a Trailer...................................... 173
Hitches.................................................................... 173
Safety Chains........................................................ 173
Trailer Brakes........................................................ 173
Trailer Lamps........................................................ 173
When Towing a Trailer....................................... 173
Event Data Recording See: Data Recording............................................. 13
Exhaust Brake
................................................136
Exhaust Brake Operating
Characteristics................................................ 137
Exhaust System Inspection.....................248
Export Unique Options.................................19
Exterior Mirrors...............................................60 Auxiliary Convex Mirrors.................................... 60
Clearance Lamps.................................................. 61
Foldaway Exterior Mirrors................................. 60
Heated Exterior Mirrors....................................... 61
Power Exterior Mirrors........................................ 60
Signal Indicator Mirrors....................................... 61
Telescoping Mirrors.............................................. 61
380
F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Index

Spare Wheel
See: Changing a Road Wheel........................ 277
Special Notices................................................18
New Vehicle Limited Warranty........................ 18
Notice to Owners of Pickup Trucks and Utility Type Vehicles........................................ 18
On Board Diagnostics Data Link Connector........................................................... 18
Special Instructions............................................. 18
Using your Vehicle as an Ambulance............19
Using Your Vehicle With a Snowplow...........19
Special Operating Conditions Scheduled Maintenance...............................................329
Diesel Engine........................................................ 331
Exceptions............................................................ 336
Gasoline Engines............................................... 329
Speed Control See: Cruise Control - Vehicles With: Adaptive
Cruise Control................................................. 148
See: Cruise Control - Vehicles With: Cruise Control............................................................... 154
Spring U-Bolt Check
...................................253
U-bolt Nut Torque............................................. 254
Stability Control
............................................144
Principle of Operation - Vehicles With: Air
Brakes................................................................ 145
Principle of Operation - Vehicles With: Hydraulic Brakes............................................ 144
Starter Switch See: Ignition Switch............................................. 93
Starting a Diesel Engine..............................95 Cold Weather Starting....................................... 95
Diesel Engine Fast Start Glow Plug System................................................................ 95
Starting a Gasoline Engine.........................94 Failure to Start...................................................... 94
Guarding Against Exhaust Fumes.................94
Important Ventilating Information................95
Stopping the Engine When Your Vehicle is Moving................................................................. 94
Stopping the Engine When Your Vehicle is Stationary.......................................................... 94
Starting and Stopping the Engine...........93 General Information............................................ 93
Steering............................................................160 Hydraulic Power Steering................................ 160
Steering System Inspection.....................252 Hydraulic System............................................... 252Steering Column Joint Bolts..........................
252
Steering Wheel
................................................52
Storage Compartments..............................92
Streaming Bluetooth Audio......................313 Selecting a Bluetooth Source........................ 313
Sun Visors
.........................................................62
Slide-on-rod........................................................... 62
Suspension System Inspection..............252
Switching Cruise Control On and Off...................................................................154
Switching Cruise Control Off......................... 154
Switching Cruise Control On.......................... 154
Switching Off the Engine............................96
Symbols Glossary
...........................................10
T
Technical Specifications See: Capacities and Specifications.............281
The Better Business Bureau (BBB) Auto Line Program (U.S. Only).......................189
Tire Care..........................................................262 Glossary of Tire Terminology......................... 262
Information Contained on the Tire Sidewall............................................................ 262
Tires See: Wheels and Tires..................................... 262
Towing a Trailer
...............................................171
Load Placement................................................... 171
Towing Points
................................................186
Towing................................................................171
Traction Control............................................142
Principle of Operation....................................... 142
Trailer Brakes
..................................................138
Trailer Air Supply and Parking Brake
Modular Controls........................................... 138
Trailer Brake Hand Control.............................. 138
Transmission Code Designation............287
Transmission
...................................................122
Transporting the Vehicle...........................185
U
Under Hood Overview - 6.7L Diesel.......215
Under Hood Overview - 7.3L
.....................216
USB Ports...........................................................91
Using Adaptive Cruise Control................148 Automatic Cancellation.................................... 151
385
F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Index

Blocked Sensor....................................................
152
Canceling the Set Speed................................. 150
Changing the Set Speed................................. 150
Detection Issues................................................... 151
Following a Vehicle............................................ 149
Hilly Condition and Trailer Tow Usage.........151
Overriding the Set Speed................................ 150
Resuming the Set Speed.................................. 151
Setting the Adaptive Cruise Speed.............149
Setting the Gap Distance................................ 150
Switching Adaptive Cruise Control Off........................................................................\
. 151
Switching Adaptive Cruise Control On........................................................................\
148
System Not Available........................................ 152
Using Snow Chains......................................277
Using Stability Control...............................146
Using Traction Control - Vehicles With: Air Brakes
......................................................142
System Indicator Light...................................... 142
Using Traction Control - Vehicles With: Hydraulic Brakes........................................142
System Indicator Light...................................... 143
Using Voice Recognition............................313 Phone Voice Service.......................................... 313
V
Vehicle Care
...................................................255
General Information......................................... 255
Vehicle Identification Number
...............286
Vehicle Inspection Guide..........................203
Vehicle Inspection Information..............203
Trailer...................................................................... 210
Transmission........................................................ 210
Vehicle Storage............................................260 Body....................................................................... 260
Brakes..................................................................... 261
Cooling system................................................... 260
Disconnecting Your 12 Volt Battery............260
Engine.................................................................... 260
Fuel system......................................................... 260
General.................................................................. 260
Miscellaneous...................................................... 261
Removing Vehicle From Storage.................. 261
Tires........................................................................\
. 261
Ventilation See: Climate Control........................................... 79VIN
See: Vehicle Identification Number............286
W
Warning Lamps and Indicators................66 Anti-Lock Braking System................................ 66
Automatic Regeneration Control................... 66
Battery..................................................................... 66
Brake System........................................................ 66
Check Suspension............................................... 66
Cruise Control....................................................... 66
Diesel Exhaust Fluid........................................... 66
Direction Indicator............................................... 66
Door Ajar.................................................................. 67
Electronic Locking Differential........................ 67
Engine Coolant Temperature........................... 67
Engine Oil Pressure.............................................. 67
Exhaust Brake On................................................. 67
Fasten Seatbelt..................................................... 67
High Beam............................................................... 67
Hydromax................................................................ 67
Low Fuel Level....................................................... 67
Parking Brake Warning....................................... 67
Parking Lamps....................................................... 67
Powertrain Malfunction/Reduced Power/Electronic Throttle Control...........68
Service Engine Soon........................................... 68
Stability Control Indicator................................ 68
Traction Control Indicator................................. 68
Traction Control System Off........................... 68
Trailer Anti-Lock Brake System (ABS) ................................................................... 68
Transmission Tow/Haul.................................... 69
Two Speed Axle.................................................... 69
Wait to Start.......................................................... 69
Water in Fuel.......................................................... 69
Washer Fluid Check....................................242
Washers See: Cleaning the Exterior.............................. 256
See: Wipers and Washers................................. 54
Waxing..............................................................257
What Is Cruise Control................................154 Requirements.......................................................154
Wheel Nuts See: Changing a Road Wheel........................ 277
Wheels and Tires
.........................................262
Technical Specifications................................. 279
386
F650750 (TBC) , enUSA, Edition date: 202010, Second-Printing Index