2021 FORD F-250 brakes

A message displays if something obstructs
the radar signals from the sensor. The
sensor is in the lower grille. The system
cannot detect a vehicle ahead and does
not function when something blocks the
sensor.
Note:
You cannot see the sensor. It is
behind a fascia panel.
Keep the front of your vehicle free of dirt,
metal badges or objects. Vehicle front
protectors and aftermarket lights may also
block the sensor.
Possible Causes and Actions for This Message Displaying: Action
Cause
Clean the grille surface in front of the radar
or remove the object causing the obstruc-
tion.
The surface of the radar is dirty or
obstructed.
Wait a short time. It may take several
minutes for the radar to detect that it is free
from obstruction.
The surface of the radar is clean but the
message remains in the display.
Do not use the system in these conditions
because it may not detect any vehicles
ahead.
Heavy rain or snow is interfering with the
radar signals.
Do not use the system in these conditions
because it may not detect any vehicles
ahead.
Water, snow or ice on the surface of the
road may interfere with the radar signals.
Wait a short time or switch to normal cruise
control.
You are in a desert or remote area with no
other vehicles and no roadside objects.
Due to the nature of radar technology, it is possible to get a blockage warning with no
actual block. A false blocked condition either self clears, or clears after you restart your
vehicle.
Switching to Normal Cruise
Control WARNING: Normal cruise control
will not brake when your vehicle is
approaching slower vehicles. Always be
aware of which mode you have selected
and apply the brakes when necessary. The cruise control indicator light
replaces the adaptive cruise
control indicator light if you
select normal cruise control. The gap
setting does not display, and the system
does not respond to lead vehicles.
Automatic braking remains active to
maintain set speed.
You can change from adaptive cruise
control to normal cruise control through
the information display.
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(If Equipped)E71340

Note:
During parking maneuvers, the
adaptive steering system balances the driver
work load for various steering wheel inputs
and vehicle loading conditions. Under
extreme operating conditions the system
locking device may engage. This strategy
prevents overheating and permanent
damage to the adaptive steering system.
Typical steering and driving maneuvers
allow the system to cool and return to
normal operation.
PRE-COLLISION ASSIST (IF
EQUIPPED) WARNING: You are responsible for
controlling your vehicle at all times. The
system is designed to be an aid and does
not relieve you of your responsibility to
drive with due care and attention. Failure
to follow this instruction could result in
the loss of control of your vehicle,
personal injury or death. WARNING:
The system does not
detect vehicles that are driving in a
different direction, cyclists or animals.
Apply the brakes when necessary. Failure
to follow this instruction could result in
the loss of control of your vehicle,
personal injury or death. WARNING:
The system does not
operate during hard acceleration or
steering. Failure to take care may lead
to a crash or personal injury. WARNING: The system may fail or
operate with reduced function during
cold and severe weather conditions.
Snow, ice, rain, spray and fog can
adversely affect the system. Keep the
front camera and radar free of snow and
ice. Failure to take care may result in the
loss of control of your vehicle, serious
personal injury or death. WARNING:
Some situations and
objects prevent hazard detection. For
example low or direct sunlight, inclement
weather, unconventional vehicle types,
and pedestrians. Apply the brakes when
necessary. Failure to follow this
instruction could result in the loss of
control of your vehicle, personal injury or
death. WARNING:
Take additional care if
your vehicle is heavily loaded or you are
towing a trailer. These conditions could
result in reduced performance of this
system. Failure to follow this instruction
could result in the loss of control of your
vehicle, personal injury or death. WARNING:
The system cannot
help prevent all crashes. Do not rely on
this system to replace driver judgment
and the need to maintain a safe distance
and speed.
Using the Pre-Collision Assist
System
The Pre-Collision Assist system is active
at speeds above approximately
3 mph
(5 km/h) and pedestrian detection is active
at speeds up to
50 mph (80 km/h). 264
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If your vehicle is rapidly approaching
another stationary vehicle, a vehicle
traveling in the same direction as yours, or
a pedestrian within your driving path, the
system provides three levels of
functionality:
1. Alert
2. Brake Support
3. Active Braking
Alert: When active, a flashing visual
warning appears and an audible warning
tone sounds.
Brake Support
: The system helps reduce
the impact speed by preparing the brakes
for rapid braking. The system does not
apply the brakes. If you press the brake
pedal, the system could apply additional
braking up to maximum braking force, even
if you lightly press the brake pedal. Active Braking
: Active braking may
activate if the system determines that a
collision is imminent. The system may help
the driver reduce impact damage or avoid
the crash completely.
Note: Brake Support and Active Braking are
active at speeds up to
75 mph (120 km/h).
If the vehicle has a radar sensor or Adaptive
Cruise Control, then Brake Support and
Active Braking are active up to the maximum
speed of the vehicle.
Note: If you perceive Pre-Collision Assist
alerts as being too frequent or disturbing,
then you can reduce the alert sensitivity,
though the manufacturer recommends
using the highest sensitivity setting where
possible. Setting lower sensitivity would
lead to fewer and later system warnings.
Note: The Pre-Collision Assist system
disables when you select
4X4 LOW, Deep
Snow/Sand mode, Rock Crawl mode, or
when you manually disable AdvanceTrac ™.
Distance Indication and Alert
(If
Equipped)
Distance Indication and Alert is a function
that provides the driver with a graphical
indication of the time gap to other
preceding vehicles traveling in the same
direction. The Distance Indication and Alert
screen in the display screen shows one of
the graphics that follow.
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WHAT IS THE GROSS
COMBINED WEIGHT RATING
Gross Combined Weight Rating
(GCWR) is the maximum
allowable weight of the vehicle
and the loaded trailer, including
all cargo and passengers, that the
vehicle can handle without risking
damage. (Important: The towing
vehicle
’s braking system is rated
for operation at Gross Vehicle
Weight Rating, not at Gross Combined Weight Rating.)
Separate functional brakes should
be used for safe control of towed
vehicles and for trailers where the
Gross Combined Weight of the
towing vehicle plus the trailer
exceed the Gross Vehicle Weight
Rating of the towing vehicle.
Note:
For trailer towing
information refer to the RV and
Trailer Towing Guide available at
an authorized dealer, or online at
the website that follows. RV & Trailer Towing Guide Online
www .fl e e t.f or d . c om/ t o wing-g uide sWebsite
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TOWING A TRAILER
WARNING: Do not exceed
the GVWR or the GAWR
specified on the certification
label. WARNING:
Towing trailers
beyond the maximum
recommended gross trailer
weight exceeds the limit of your
vehicle and could result in engine
damage, transmission damage,
structural damage, loss of
vehicle control, vehicle rollover
and personal injury. WARNING:
Do not exceed
the lowest rating capacity for
your vehicle or trailer hitch.
Overloading your vehicle or
trailer hitch can impair your
vehicle stability and handling.
Failure to follow this instruction
could result in the loss of control
of your vehicle, personal injury or
death. WARNING:
Do not cut,
drill, weld or modify the trailer
hitch. Modifying the trailer hitch
could reduce the hitch rating.
Your vehicle may have electrical
items, such as fuses or relays,
related to towing. See
Fuse
Specification Chart (page 339). Your vehicle may have ability to
modify trailer towing features.
See
General Information (page
110).
Your vehicle's load capacity
designation is by weight, not by
volume, so you cannot necessarily
use all available space when
loading a vehicle or trailer.
Towing a trailer places an extra
load on your vehicle's engine,
transmission, axle, brakes, tires
and suspension. Inspect these
components periodically during,
and after, any towing operation.
Note: To prevent your trailer from
accumulating distance, and the
trailer information status appearing
when you restart your vehicle after
disconnecting your trailer, you must
deactivate your trailer. Using the
information display, go to the
Towing menu and then the Select
Trailer option. Select the No active
trailer option. See
General
Information (page 110).
Load Placement
To help minimize how trailer
movement affects your vehicle
when driving:
• Load the heaviest items closest
to the trailer floor.
• Load the heaviest items
centered between the
left-hand and right-hand side
trailer tires.
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•
Load the heaviest items above
the trailer axles or just slightly
forward toward the trailer
tongue. Do not allow the final
trailer tongue weight to go
above or below 10-15% of the
loaded trailer weight. Do not
exceed the tongue load rating
indicated on the conventional
hitch receiver.
• Select a ball mount with the
correct rise or drop. When both
the loaded vehicle and trailer
are connected, the trailer frame
should be level, or slightly
angled down toward your vehicle, when viewed from the
side.
When driving with a trailer or
payload, a slight takeoff vibration
or shudder may be present due to
the increased payload weight.
Additional information regarding
proper trailer loading and setting
your vehicle up for towing is in
another chapter of this manual.
See Recommended Towing
Weights (page 300).
You can also find information in
the
RV & Trailer Towing Guide
available at your authorized
dealer, or online. RV & Trailer Towing Guide Online
http://www.fleet.ford.com/towing-guides/
Website
TRAILER REVERSING AIDS
(IF
EQUIPPED)
Pro Trailer Backup Assist With
Trailer Reverse Guidance WARNING: Driving while distracted
can result in loss of vehicle control, crash
and injury. We strongly recommend that
you use extreme caution when using any
device that may take your focus off the
road. Your primary responsibility is the
safe operation of your vehicle. We
recommend against the use of any hand-held device while driving and
encourage the use of voice-operated
systems when possible. Make sure you
are aware of all applicable local laws
that may affect the use of electronic
devices while driving.
WARNING:
This system is an extra
driving aid. It does not replace your
attention and judgment, or the need to
apply the brakes. This system does NOT
automatically brake your vehicle. If you
fail to press the brake pedal when
necessary, you may collide with another
vehicle.
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For best results, make sure that your trailer
rides level with the ground when you hitch
your vehicle. More information on selecting
your towbar is available in the Towing
section. See Towing (page 282).
Make sure that the trailer and your vehicle
are in line with each other. You can do this
by putting the transmission in drive (D) and
pulling straight forward.
Setting Up the System 1. Press the button to switch the system
on.
2. Use the controls on the steering wheel
to select the option to add a trailer in
the information display. See General
Information (page 110).
3. Add a personalized name for the trailer
using the screen prompts. Use the
down arrow to scroll to the preferred
letter and then press the right arrow to
advance to the next letter. Press OK to
continue.
4. Select the Trailer Brake Type.
Note: Select Default Electric/Surge/None
if your trailer has electric, surge or no brakes.
5. Select the Trailer Brake Effort.
Note: The default option is Low. We
recommend this for most trailers. If the
trailer brakes require more initial voltage, or
if you prefer more aggressive braking, select
Medium or High.
6. Select the trailer type.
Note: The system may prompt you to setup
Trailer Blind Spot before continuing the
setup process.
7. Select whether you want to add Pro Trailer Backup Assist.
Conventional Trailer Setup
(If
Equipped)
The following are examples of
conventional trailers.
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Turn and hold counterclockwise to make
the trailer go left.
Turn and hold clockwise to make the trailer
go right.
Note:
Practice maneuvering with the
system in a safe open area first.
Note: Try backing up in a straight line and
then turning the knob slowly in the direction
you want to go.
Note: Quickly turning and releasing the
knob results in a jerky movement of the
vehicle. Release the knob when the trailer is
moving in the direction you want. Control
the accelerator and brakes while the
system steers your vehicle automatically
to keep the trailer moving straight back.
Note:
For fifth wheel and gooseneck
trailers, the weight and hitch position of
these trailers may make the trailer respond
differently to the knob input than
conventional trailers. You may need to
release the knob early or stop and pull
forward to align your truck and trailer when
returning to straight backing after making a
turn.
Note: Trailer maneuvering performance
may be compromised when using a fifth
wheel sliding hitch or pivoting pin box since
the system does not know the pivot point.
Note: You may have to use the knob to
correct the trailer direction when attempting
to move the trailer straight back under some
conditions.
Note: The system limits the vehicle speed.
Note: When you release the knob or turn it
to the center position, your vehicle follows
the trailer's path.
Using Trailer Reverse Guidance
This provides information graphics and up
to seven camera views to help you backup
your trailer when you use the steering
wheel. If you do not set up the system, you
can still use the camera views.
Note: The hitch angle graphic, automatic
view switching and straight backup mode
are not available if you do not set up the
system.
1. Shift into reverse (R). Press the rear camera button to expand the menu.
2. Press the trailer icon.
3. Select the applicable trailer in the information display.
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