2021 FORD F-250 brake sensor

WARNING: The system only warns
of vehicles detected by the radar sensor.
In some cases there may be no warning
or a delayed warning. Apply the brakes
when necessary. Failure to follow this
instruction could result in personal injury
or death.
Note: When you are following a vehicle and
you switch on a direction indicator, adaptive
cruise control may provide a small
temporary acceleration to help you pass.
Note: The brakes may emit noise when
applied by the system.
When a vehicle ahead of you enters the
same lane or a slower vehicle is ahead in
the same lane, the vehicle speed adjusts
to maintain a preset gap distance. A
vehicle graphic illuminates in the
instrument cluster.
Your vehicle maintains a consistent gap
from the vehicle ahead until:
• The vehicle in front of you accelerates
to a speed above the set speed.
• The vehicle in front of you moves out
of the lane you are in.
• Your vehicle speed falls below
12 mph
(20 km/h).
• You set a new gap distance.
The system applies the brakes to slow your
vehicle to maintain a safe gap distance
from the vehicle in front. The system only
applies limited braking. You can override
the system by applying the brakes.
If the system determines that its maximum
braking level is not sufficient, an audible
warning sounds, a message appears in the
information display and an indicator
flashes when the system continues to
brake. Take immediate action. Setting the Gap Distance
You can decrease or increase the distance
between your vehicle and the vehicle in
front by pressing the gap control. Press and release to decrease
the gap distance.
Press and release to increase the
gap distance.
The selected gap appears in the
information display as shown by the bars
in the image.
Note:
The gap setting is time dependent
and therefore the distance adjusts with your
vehicle speed.
Note: It is your responsibility to select a gap
appropriate to the driving conditions.
245
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Cruise Control
(If Equipped)E263697 E263696 E233874

Automatic Cancellation
The system is not functional at vehicle
speeds below 12 mph (20 km/h). The
information display indicates low engine
speed, an audible alarm sounds and the
automatic braking releases if the vehicle
drops below this speed.
Automatic cancellation can also occur
when:
•
The tires lose traction.
• You apply the parking brake.
Note: If the engine speed drops too low, an
audible warning sounds and a message
appears in the information display.
Automatic braking releases.
Hilly Condition and Trailer Tow
Usage
You should select a lower gear when the
system is active in situations such as
prolonged downhill driving on steep
grades, for example in mountainous areas.
The system needs additional engine
braking in these situations to reduce the
load on the vehicle ’s regular brake system
to prevent it from overheating.
Note: An audible alarm sounds and the
system shuts down if it applies brakes for
an extended period of time. This allows the
brakes to cool. The system functions
normally again after the brakes cool.
Note: When towing with adaptive cruise
control, switch on Tow/Haul Mode and
Diesel Engine Brake.
Note: Tow/Haul mode increases the time
gaps and allows more distance for braking.
Switching Adaptive Cruise Control
Off Press and release the button
when the system is in standby
mode, or switch the ignition off. Note:
You erase the set speed and gap
setting when you switch the system off.
Detection Issues WARNING: On rare occasions,
detection issues can occur due to the
road infrastructures, for example bridges,
tunnels and safety barriers. In these
cases, the system may brake late or
unexpectedly. At all times, you are
responsible for controlling your vehicle,
supervising the system and intervening,
if required. WARNING:
If the system
malfunctions, have your vehicle checked
as soon as possible.
The radar sensor has a limited field of view.
It may not detect vehicles at all or detect
a vehicle later than expected in some
situations. The lead vehicle graphic does
not illuminate if the system does not
detect a vehicle in front of you.
247
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Cruise Control
(If Equipped)E265297

Detection issues can occur:
When driving on a different line
than the vehicle in front.
A
With vehicles that edge into your
lane. The system can only detect
these vehicles once they move
fully into your lane.
B
There may be issues with the
detection of vehicles in front
when driving into and coming out
of a bend or curve in the road.
C
In these cases, the system may brake late
or unexpectedly. You should stay alert and
take action when necessary.
If something hits the front end of your
vehicle or damage occurs, the
radar-sensing zone may change. This could
cause missed or false vehicle detection. Optimal system performance requires a
clear view of the road by the
windshield-mounted camera.
Optimal performance may not occur if:
•
The camera is blocked.
• There is poor visibility or lighting
conditions.
• There are bad weather conditions.
System Not Available
Conditions that can cause the system to
deactivate or prevent the system from
activating when requested include:
• A blocked sensor.
• High brake temperature.
• A failure in the system or a related
system.
Blocked Sensor The camera is mounted on the windshield
behind the interior mirror.
248
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Cruise Control (If Equipped)E71621 E243054 E312903

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.
249
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Cruise Control
(If Equipped)E71340

Zone coverage also decreases when
parking at narrow angles. The sensor on
the left-hand side is mostly obstructed and
zone coverage on that side is severely
reduced.
Cross Traffic Alert System Sensors
The sensors are inside the brake lamp on
both sides of your vehicle.
Note:
Keep the sensors free from snow, ice
and large accumulations of dirt.
Note: Do not cover the sensors with bumper
stickers, repair compound or other objects. Note:
Blocked sensors could affect system
performance.
If the sensors are blocked, a message may
appear in the information display when
you shift into reverse (R).
Cross Traffic Alert System
Limitations
The system may not correctly operate
when any of the following occur:
• The sensors are blocked.
• Adjacently parked vehicles or objects
are obstructing the sensors.
• Vehicles approach at speeds less than
4 mph (6 km/h) or greater than 37 mph
(60 km/h).
• The vehicle speed is greater than 7 mph
(12 km/h)
.
• You reverse out of an angled parking
space.
260
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Driving AidsE142441 E231384

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.
265
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Driving AidsE255268 E156131

This feature helps you to steer your vehicle
when reversing with a trailer by:
•
Using the control knob with Pro Trailer
Backup Assist.
• Using the steering wheel with Trailer
Reverse Guidance.
Each trailer you use with your vehicle has
to be setup once.
You must take care to follow the setup
process accurately to correctly place the
sticker or sensor.
Contact your dealership if you need
assistance setting up your trailer.
Note: Your vehicle saves the trailer
information when you enter it into the
system. You can add a maximum of 10
trailers to the system.
Note: The system is not a substitute for
safe driving practices.
Note: You must always be aware of your
vehicle and trailer combination, and the
surrounding environment.
Note: The system does not detect or
prevent your vehicle or trailer from making
contact with obstacles in the surrounding
environment.
Note: Keep in mind that the front end of
your vehicle swings out when changing the
direction of the trailer. Note:
The system relies on user
measurements to determine sticker
placement or user installation of a sensor
to determine system limits. It is critical to
correctly take the key measurements or
properly install the sensor. Incorrect
measurements or sensor placement can
result in the improper function of the system
up to and including contact between your
vehicle and trailer. Even with correct
measurements and sensor placement, the
system cannot determine if the trailer body
may contact your vehicle. Check the
clearance between your vehicle and trailer,
especially for sharp turns.
Note: The system limits vehicle speed when
backing up. The system is not a replacement
for proper use of the throttle and brake
pedals.
Note: The system does not support backing
up when towing multiple trailers. If you are
towing more than one trailer, you must
disconnect the additional trailers before
using the system.
Positioning Your Vehicle and
Trailer
Hitch your trailer to your vehicle and
connect the electrical wiring harness.
Check to make sure that the wiring is
working. See Essential Towing Checks
(page 305). Park your vehicle and hitched trailer on a
level surface.
284
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- TowingE209759

Protected Component
Fuse
Rating
Fuse
Number
Not used.
—
49
Heated and cooled seats.
30 A
50
Powertrain control module.
20 A
51
Compressed natural gas (gas).
15 A
52
Fuel rail pressure relief control (diesel).
Exhaust gas recirculation stepper motor (gas).
20 A
53
Universal exhaust gas oxygen sensors (gas).
Exhaust gas recirculation cooler bypass (diesel).
Urea pump motor controller (diesel).
Oxygen sensors.
A/C clutch relay power.
20 A
54
Fan clutch.
Rain sensor.
5 A
55
Windshield wipers.
30 A
56
Upfitter interface module.
10 A
57
Alternator sense line.
10 A
58
Power running boards.
30 A
59
Body control module - battery power in feed 2.
40 A
60
Telescopic mirror motors.
10 A
61
Trailer brake control.
40 A
62
Aftermarket e-brake access.
Multi-contour seats.
15 A
63
Ignition coil (gas).
20 A
64
Glow plug module (diesel).
Nitrogen oxide module (diesel).
Urea level and quality sensor (diesel).
Fuel pump.
30 A
65
A/C clutch solenoid.
10 A
66
Auxiliary lighting module.
40 A
67
Powertrain control module.
10 A
68
342
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Third-Printing- Fuses