lock FORD F-150 2021 Owners Manual

WHAT IS TRAIL TURN ASSIST
Trail turn assist can reduce the turning
radius of your vehicle by applying the
brakes to the inside rear wheel in
low-speed, high steering-angle maneuvers.
TRAIL TURN ASSIST
PRECAUTIONS
Note:
Do not use trail turn assist on dry,
hard surfaced roads. Doing so can produce
excessive noise, increase tire wear and may
damage drive line, or braking components.
Trail turn assist is only intended for slippery,
or loose surfaces.
You may hear noise from the anti-lock
brake system while trail turn assist is
active. This is normal operation.
TRAIL TURN ASSIST
LIMITATIONS
Trail turn assist can only be used when the
vehicle ’s four-wheel drive system is in the
four-wheel drive high (4H), or four-wheel
drive low (4L) modes.
Trail Turn Assist cannot be used when the
vehicle ’s rear differential is locked. If the
rear differential has recently been locked
prior to Trail Turn Assist being turned on,
Trail Turn Assist may not activate until it
can confirm that the rear differential is
unlocked.
SWITCHING TRAIL TURN
ASSIST ON AND OFF
You can switch the trail turn assist on or
off from the features section of the vehicle
on screen display.
1. Press Features on the touchscreen.
2. Press
Trail Turn Assist. 3. Switch
Trail Turn Assist on or off.
Switch trail turn assist on when your
vehicle is in four-wheel drive high (4H) or
four-wheel drive low (4L).
The system activates when the:
• Vehicle speed is less than
12 mph
(19.3 km/h).
• Rear differential is fully unlocked.
• Steering wheel is almost fully turned
to the left or right.
Switch trail turn assist off by performing
any of the following:
• Switch trail turn assist off from the
features section of the vehicle on
screen display.
• Select two-wheel drive high, or
four-wheel drive auto.
• Switch on the rear locking differential.
TRAIL TURN ASSIST
INDICATORS When trail turn assist is on, one
of these two indicators will be
displayed, depending on the
direction of the vehicle
’s last
turn. When the feature is on but
not in use, the indicator light will
be gray. When the feature is active the
indicator light will be green.
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TRAIL TURN ASSIST –
TROUBLESHOOTING
TRAIL TURN ASSIST –
INFORMATION MESSAGES
Details
Message
Switch to four-wheel
drive low (4L) or four-
wheel drive high (4H) to activate trail turn assist. See Selecting a Four-
Wheel Drive Mode (page
294).
Trail Turn
Assist Avail- able in 4L or 4H
Trail turn assist systemmalfunction could be
present. if this condition persists, have yourvehicle serviced.
Trail Turn
Assist Not
Available See Manual
You have activated trailturn assist.
Trail Turn
Assist ON
You have switched trailturn assist off.
Trail Turn
Assist OFF
TRAIL TURN ASSIST –
FREQUENTLY ASKED QUESTIONS
Why does Trail Turn Assist not activate
after unlocking the rear differential? The rear differential may not be fully
disengaged. When possible, turn off
the rear axle locker while driving
straight before using trail turn assist.
If you are already in a tight turn when
you encounter this situation, driving
the vehicle for a short distance in
reverse could allow the differential to
fully disengage.
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ELECTRIC POWER STEERING
ELECTRIC POWER STEERING
PRECAUTIONS
WARNING: The electric power
steering system has diagnostic checks
that continuously monitor the system. If
a fault is detected, a message displays
in the information display. Stop your
vehicle as soon as it is safe to do so.
Switch the vehicle off. After at least 10
seconds, switch the vehicle on and
watch the information display for a
steering system warning message. If a
steering system warning message
returns, have the system checked as
soon as possible. WARNING:
If the system detects
an error, you may not feel a difference in
the steering, however a serious condition
may exist. Have your vehicle checked as
soon as possible. Failure to do so may
result in loss of steering control.
Adapt your speed and driving behavior
according to reduced steering assist.
Extreme continuous steering may increase
the effort to steer. This occurs to prevent
internal overheating and damage to the
steering system. If this occurs, you will not
lose the ability to steer your vehicle
manually nor will it cause damage to the
system. Normal steering and driving allows
the system to cool down and steering
assist returns to normal.
Note: There is no fluid reservoir to check or
fill. ELECTRIC POWER STEERING
ADAPTIVE STEERING
(If Equipped)
The adaptive steering system changes the
steering ratio with changes to vehicle
speed, optimizing the steering response in
all conditions. The system also changes
when you switch on the transmission
tow/haul feature. When you select the
tow/haul button, the adaptive steering
system reduces vehicle sensitivity to
steering inputs at higher vehicle speeds,
while maintaining the ease of parking and
maneuverability at low speeds.
Note: The adaptive steering system
continuously monitors for faults. If the
system detects a fault, a message appears
in the information display. If a red warning
message displays, stop your vehicle as soon
as it is safe to do so. The message could
clear if the fault is no longer present. If an
adaptive steering system warning message
appears each time you start your vehicle,
have the system checked as soon as
possible.
Note: The system has a locking device. It
remains mechanically locked at a fixed
steering ratio with the lock engaged. You
may notice a click when you turn your
vehicle on or off.
Note: If your vehicle loses electrical power
or detects a fault when you are driving, the
system shuts down and you retain a normal
steering function with a fixed steering ratio.
During this time, it is possible that the
steering wheel could not be straight when
the vehicle is driving straight ahead. In
addition, you could notice that the steering
wheel angle required to steer your vehicle
could be different.
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Note:
During parking maneuvers, the
adaptive steering system balances the driver
workload for various steering wheel inputs
and vehicle loading conditions. Under
extreme operating conditions the system
locking device could 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.
Adaptive Learning
Adaptive learning helps correct road
irregularities and improves overall handling
and steering. It communicates with the
brake system to help operate advanced
stability control and crash avoidance
systems. Additionally, whenever you
disconnect the battery or install a new
battery, you must drive your vehicle a short
distance before the system relearns the
strategy and reactivates all systems. STEERING –
TROUBLESHOOTING
STEERING – WARNING
INDICATORS The adaptive steering system
indicator illuminates if the
system detects a fault during the
continuous diagnostic checks.
Note: If a red warning message displays,
stop your vehicle as soon as it is safe to do
so.
STEERING – INFORMATION MESSAGES Action
Message
The power steering system has detected acondition that requires service. Have your vehicle checked as soon as possible.
Steering Fault Service Now
The power steering system is not working.
Stop your vehicle in a safe place. Have your vehicle checked as soon as possible.
Steering Loss Stop Safely
The power steering system has detected acondition that requires service. Have your vehicle checked as soon as possible.
Steering Assist Fault Service Required
The steering system has detected a condi-
tion that requires service. Have your vehiclechecked as soon as possible.
Steering Lock Malfunction Service Now
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PARKING AID PRECAUTIONS
WARNING: To help avoid personal
injury, always use caution when in
reverse (R) and when using the sensing
system. WARNING:
The system may not
detect objects with surfaces that absorb
reflection. Always drive with due care
and attention. Failure to take care may
result in a crash. WARNING: Traffic control systems,
fluorescent lamps, inclement weather,
air brakes, external motors and fans may
affect the correct operation of the
sensing system. This may cause reduced
performance or false alerts. WARNING:
The system may not
detect small or moving objects,
particularly those close to the ground. WARNING:
The parking aid system
can only assist you to detect objects
when your vehicle is moving at parking
speeds. To help avoid personal injury you
must take care when using the parking
aid system. WARNING:
The system may not
function if the sensor is blocked. WARNING:
In cold and severe
weather conditions the system may not
function. Rain, snow and spray can all
limit sensor performance. WARNING:
If damage occurs in the
immediate area surrounding the sensor,
have your vehicle checked as soon as
possible. Note:
If your vehicle sustains damage
leaving the sensors misaligned, this will
cause inaccurate measurements or false
alerts.
When you connect a trailer to your vehicle,
the rear parking aid detects the trailer and
provides an alert. Disable the parking aid
when you connect a trailer to prevent the
alert.
Note: Certain add-on devices installed
around the bumper or fascia may create
false alerts, for example, large trailer
hitches, bike or surfboard racks, license plate
brackets, bumper covers or any other device
that could block the normal detection zone
of the parking aid system. Aftermarket spare
tires or spare tire covers mounted to the rear
tailgate could cause false alerts from the
park aid system. Remove the add-on device
to prevent false alerts.
Note: Keep the sensors free from snow, ice
and large accumulations of dirt. If the
sensors are covered, the system's accuracy
can be affected.
Do not clean the sensors with sharp
objects.
Note: When using a programmed MyKey,
you cannot switch the parking aids off. See
MyKey ™
(page 98).
REAR PARKING AID
(IF EQUIPPED)
WHAT IS THE REAR PARKING AID
Rear parking sensors detect objects behind
your vehicle when in reverse (R).
REAR PARKING AID LIMITATIONS
There is a decreased coverage area at the
outer corners.
When using a programmed MyKey, you
cannot switch the rear parking aid off.
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If your vehicle is in any forward gear, the
front parking aid provides audible warnings
and visual indication when your vehicle is
moving at a speed of 5 mph (8 km/h) or
below and the system detects an object
within the detection zone. Once your
vehicle reaches a stop, the visual indication
and audio warning stops after a few
seconds.
If your vehicle is in neutral (N), the front
and rear sensors provide visual indication
only when your vehicle is moving below a
speed of
5 mph (8 km/h) and obstacles
are detected inside the detection areas.
Once your vehicle stops, the visual
indication and audio warning stops after
a few seconds.
LOCATING THE FRONT PARKING
AID SENSORS The front parking aid sensors are in the
front bumper.
FRONT PARKING AID AUDIBLE
WARNINGS
A warning tone sounds when there is an
object within
28 in (70 cm) from the front
bumper. As your vehicle moves closer to
an object, the rate of the tone increases. The warning tone continuously sounds
when an object is 12 in (30 cm) or less from
the front bumper.
Note:
If the detected object is 12 in (30 cm)
or less from your vehicle, visual indication
remains on.
SIDE PARKING AID
(IF EQUIPPED)
WHAT IS THE SIDE PARKING AID
The front and rear outermost parking aid
sensors map objects that are near to the
sides of your vehicle.
SIDE PARKING AID LIMITATIONS
The sensor coverage is up to 24 in (60 cm)
from the sides of your vehicle.
The side parking aid may not function if:
• Your vehicle remains stationary for over
two minutes.
• The anti-lock brake system activates.
• The traction control system activates.
• Your vehicle is in park (P).
• The steering wheel angle information
is not available. You must drive at least
492 ft (150 m)
above 19 mph
(30 km/h) to reset the steering wheel
angle information.
Note: If you switch traction control off, the
side sensing system also turns off.
To reinitialize the system, drive the length
of your vehicle.
The side parking aid does not detect an
object that is moving toward the side of
your vehicle, for example another vehicle
moving at a low speed, if it does not pass
a front or rear parking aid sensor.
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PARKING AID INDICATORS
The system provides object distance
indication through the information display.
•
As the distance to the object
decreases, the indicator blocks
illuminate and move toward the vehicle
icon.
• If there is no object detected, the
distance indicator blocks are grey.
Visual indication remains on when the
transmission is in reverse (R). When you
stop your vehicle, visual indication turns
off after four seconds.
If the parking aids are not available, the
side distance indicator blocks do not
display.
PARKING AIDS –
TROUBLESHOOTING
PARKING AIDS – INFORMATION
MESSAGES
If a fault is present in the parking aids, a
warning message appears in the
instrument cluster or the information and
entertainment display. Action
Message
The system detects a condition that
requires service. Have your vehicle checked as soon as possible.
Check Front Park Aid
The system detects a condition that
requires service. Have your vehicle checked as soon as possible.
Check Rear Park Aid
Displays the park aid status.
Front Park Aid On Off
Displays the park aid status.
Rear Park Aid On Off
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3. Select parallel park exit.
4. Use the turn signal to choose the
direction to exit the parking space.
5. Press and hold the brake pedal.
6. Release the steering wheel and shift into neutral (N).
7. Release the parking brake.
8. Press and hold the active park assist button.
9. Release the brake pedal to allow your vehicle to move.
Note: After active park assist drives your
vehicle to a position where you can exit the
parking space in a forward movement, a
message appears instructing you to take full
control of your vehicle.
10. Take control of your vehicle.
Note: You can slow down your vehicle at
any time by pressing the brake pedal. ACTIVE PARK ASSIST –
TROUBLESHOOTING
ACTIVE PARK ASSIST –
INFORMATION MESSAGES Action
Message
The system
requires service.
Have your vehicle
checked as soon as possible.
Active Park Fault
ACTIVE PARK ASSIST –
FREQUENTLY ASKED QUESTIONS
Why does active park assist not
operate correctly? The system is unable to detect a
vehicle, curb or object to park next to
or in between. The system needs
boundary objects to operate correctly.
Why does active park assist not search
for a parking space? You have switched traction control off.
Why does active park assist not search
for a parking space? The transmission is in reverse (R). Your
vehicle must be moving forward to be
able to detect a parking space.
Why does active park assist not offer
a parking space? The sensors could be blocked. For
example, snow, ice or large
accumulations of dirt. Blocked sensors
can affect how the system functions.
Why does active park assist not offer
a parking space? The sensors in the front or rear bumper
could be damaged.
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ADAPTIVE CRUISE CONTROL
LIMITATIONS
Sensor Limitations
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. WARNING:
Large contrasts in
outside lighting can limit sensor
performance. 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. WARNING:
The system may not
detect stationary or slow moving
vehicles below
6 mph (10 km/h). WARNING:
The system does not
detect pedestrians or objects in the road. WARNING:
The system does not
detect oncoming vehicles in the same
lane. WARNING:
The system may not
operate properly if the sensor is blocked.
Keep the windshield free from
obstruction. WARNING:
The sensor may
incorrectly track lane markings as other
structures or objects. This can result in
a false or missed warning. Camera.
1.
Radar sensor.
2.
The camera is on the windshield behind
the interior mirror.
The radar sensor is in the lower grille.
Note: You cannot see the sensor. It is
behind a fascia panel.
Note: Keep the front of your vehicle free of
dirt, metal badges or objects. Vehicle front
protectors, aftermarket lights, additional
paint or plastic coatings could also degrade
sensor performance.
A message displays if something obstructs
the camera or the sensor. When something
blocks the sensor, the system cannot
detect a vehicle ahead and does not
function. See
Adaptive Cruise Control
– Information Messages (page 362).
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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 image does
not illuminate if the system does not
detect a vehicle in front of you.
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. 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
camera.
Optimal performance may not occur if:
•
The camera is blocked.
• There is poor visibility or lighting
conditions.
• There are bad weather conditions.
SWITCHING ADAPTIVE
CRUISE CONTROL ON AND OFF
The cruise controls are on the steering
wheel. See Visual Search (page 34).
Switching Adaptive Cruise Control
On Press the button to activate the
system. When the system
activates, the set speed is equal
to whichever is greater, the current vehicle
speed, or 15 mph when in imperial units or
20 km/h when in metric units. If the speed
is too low, or other conditions are not
correct for adaptive cruise control
activation, the system enters standby
mode. When you are below 15 mph when
in imperial units or 20 km/h when in metric
units, adaptive cruise control does not
activate unless you are following another
vehicle.
The indicator, current gap setting and set
speed appear in the instrument cluster
display.
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