If the message only displays with a trailer
connected, the problem is with the trailer
wiring. Consult your trailer dealer for
assistance. This can be a short to ground
(such as a chaffed wire), short to voltage
(such as a pulled pin on trailer emergency
breakaway battery) or the trailer brakes
may be drawing too much current.
Points to Remember
Note:
Do not attempt removal of the trailer
brake controller without consulting the
Workshop Manual. Damage to the unit may
result.
• Adjust gain setting before using the
trailer brake controller.
• Adjust gain setting, using the procedure
above, whenever road, weather, trailer
or vehicle loading conditions change
from when the gain was initially set.
• Only use the manual control lever for
proper adjustment of the gain during
trailer setup. Misuse, such as
application during trailer sway, could
cause instability of trailer or tow
vehicle.
• Avoid towing in adverse weather
conditions. The trailer brake controller
does not provide anti-lock control of
the trailer wheels. Trailer wheels can
lock up on slippery surfaces, resulting
in reduced stability of trailer and tow
vehicle.
• The trailer brake controller is equipped
with a feature that reduces output at
vehicle speeds below 11 mph (18 km/h)
so trailer and vehicle braking is not jerky
or harsh. This feature is only active
when applying the brakes using your
vehicle's brake pedal, not the
controller. •
The controller interacts with the brake
control system and powertrain control
system of your vehicle to provide the
best performance on different road
conditions.
• Your vehicle's brake system and the
trailer brake system work
independently of each other. Changing
the gain setting on the controller does
not affect the operation of your
vehicle's brakes.
• When you switch the engine off, the
controller output is disabled and the
display and module shut down.
Trailer Lamps WARNING
Never connect any trailer lamp wiring
to the vehicle's tail lamp wiring; this
may damage the electrical system
resulting in fire. Contact your authorized
dealer as soon as possible for assistance
in proper trailer tow wiring installation.
Additional electrical equipment may be
required. Trailer lamps are required on most towed
vehicles. Make sure all running lights, brake
lights, turn signals and hazard lights are
working.
Before Towing a Trailer
Practice turning, stopping and backing up
to get the feel of your vehicle-trailer
combination before starting on a trip.
When turning, make wider turns so the
trailer wheels clear curbs and other
obstacles.
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When backing down a ramp during boat
launching or retrieval:
•
Do not allow the static water level to
rise above the bottom edge of the rear
bumper.
• Do not allow waves to break higher
than 6 in (15 cm) above the bottom
edge of the rear bumper.
Exceeding these limits may allow water to
enter vehicle components:
• Causing internal damage to the
components.
• Affecting driveability, emissions, and
reliability.
Replace the rear axle lubricant anytime
the rear axle has been submerged in water.
Water may have contaminated the rear
axle lubricant, which is not normally
checked or changed unless a leak is
suspected or other axle repair is required.
TOWING THE VEHICLE ON
FOUR WHEELS WARNING
If your vehicle has a steering wheel
lock make sure the ignition is in the
accessory or on position when being
towed. Emergency Towing
If your vehicle becomes inoperable
(without access to wheel dollies,
car-hauling trailer, or flatbed transport
vehicle), it can be flat-towed (all wheels
on the ground, regardless of the powertrain
and transmission configuration) under the
following conditions:
•
Your vehicle is facing forward for
towing in a forward direction.
• Place the transmission in neutral (N).
If you cannot move the transmission
into neutral (N), you may need to
override it. See
Transmission (page
208).
• Maximum speed is 35 mph (56 km/h).
• Maximum distance is
50 mi (80 km). WARNING
If your vehicle has a steering wheel
lock make sure the ignition is in the
accessory or on position when being
towed. Recreational Towing
Note:
Put your climate control system in
recirculated air mode to prevent exhaust
fumes from entering your vehicle. See
Climate Control
(page 146).
Follow these guidelines if you have a need
for recreational towing, such as towing
your vehicle behind a motorhome. We have
designed these guidelines to prevent
damage to your transmission.
Two-wheel Drive Vehicles
Do not tow your vehicle with any wheels
on the ground, as vehicle or transmission
damage may occur. It is recommended to
tow your vehicle with all four (4) wheels
off the ground, such as when using a
car-hauling trailer. Otherwise, you cannot
tow your vehicle.
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 201709, Second Printing Towing
Sunroof
See: Moonroof..................................................... 103
Sun Visors........................................................102
Illuminated Vanity Mirror................................. 103
Supplementary Restraints System.........46 Principle of Operation........................................ 46
Switching Off the Engine - 6.7L Diesel..............................................................183
Symbols Glossary.............................................8
SYNC™ 3
.......................................................498
General Information......................................... 498
SYNC™ 3 Troubleshooting
.....................560
SYNC™ Applications and Services........................................................476
911 Assist............................................................... 476
SYNC Mobile Apps............................................ 478
SYNC™...........................................................460 General Information........................................ 460
SYNC™ Troubleshooting
.........................490
T
Tailgate Lock
.....................................................72
Tailgate Step....................................................73
Closing the Step.................................................... 74
Opening the Step................................................. 73
Tailgate...............................................................72
Technical Specifications See: Capacities and Specifications............420
Terrain Control..............................................233 Principle of Operation...................................... 233
The Better Business Bureau (BBB) Auto Line Program (U.S. Only)
........................312
Tire Care..........................................................382 Glossary of Tire Terminology........................ 384
Information About Uniform Tire Quality Grading............................................................. 382
Information Contained on the Tire Sidewall........................................................... 385
Temperature A B C............................................ 383
Traction AA A B C.............................................. 383
Treadwear............................................................ 383
Tire Pressure Monitoring System..........400 Trailer Tire Pressure Monitoring
System.............................................................. 407
Vehicle Tire Pressure Monitoring System............................................................. 400Tires
See: Wheels and Tires..................................... 380
Towing a Trailer.............................................272 Load Placement................................................. 273
Towing Points...............................................308
Towing the Vehicle on Four Wheels..........................................................295
Emergency Towing............................................ 295
Recreational Towing......................................... 295
Towing..............................................................272
Traction Control
...........................................229
Principle of Operation...................................... 229
Trailer Reversing Aids..................................274 Principle of Operation...................................... 274
Setting Up Trailer Reverse Guidance..........274
Trailer Reverse Guidance................................. 274
Troubleshooting................................................. 278
Using Trailer Reverse Guidance..................... 277
Trailer Sway Control
....................................281
Transfer Case Fluid Check.......................349
Transmission Code Designation............426
Transmission.................................................208
Transporting the Vehicle...........................307
Type Approvals
.............................................637
RF Certification Logos for Blind Spot
Information System..................................... 643
RF Certification Logos for Mid Range Radar................................................................. 639
RF Certification Logos for Passive Anti-Theft System....................................... 640
RF Certification Logos for Radio Transceiver Module.............................................................. 642
RF Certification Logos for Tire Pressure Monitoring Sensor(s).................................. 637
U
Under Hood Overview - 6.2L...................329
Under Hood Overview - 6.7L Diesel............................................................330
F-Super Duty....................................................... 330
Scheduled Maintenance.................................. 331
Under Hood Overview - 6.8L
....................331
Under Seat Storage......................................172
Rear Under Seat Storage.................................. 172
Universal Garage Door Opener...............166 HomeLink Wireless Control System...........166
USB Port
.........................................................459
655
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 201709, Second Printing Index