2021 FORD EXPEDITION suspension

Avoid sudden braking. Although a
four-wheel drive vehicle may accelerate
better than a two-wheel drive vehicle in
snow and ice, it does not stop any faster
as braking occurs at all four wheels. Do not
become overconfident as to road
conditions.
Make sure you allow sufficient distance
between you and other vehicles for
stopping. Drive slower than usual and
consider using one of the lower gears. In
emergency stopping situations, apply the
brake steadily. Do not pump the brake
pedal. See Hints on Driving With
Anti-Lock Brakes (page 219).
Note: Excessive tire slippage can cause
transmission damage.
If Your Vehicle Gets Stuck In Mud or
Snow WARNING:
Do not spin the wheels
at over 34 mph (55 km/h). The tires may
fail and injure a passenger or bystander.
If your vehicle gets stuck in mud or snow,
you may rock it out by shifting between
forward and reverse gears, stopping
between shifts in a steady pattern. Press
lightly on the accelerator in each gear.
Note: Do not rock your vehicle if the engine
is not at normal operating temperature or
damage to the transmission could occur.
Note: Do not rock your vehicle for more
than a minute or damage to the
transmission and tires could occur or the
engine may overheat. Parking WARNING:
If the parking brake is
fully released, but the brake warning
lamp remains illuminated, the brakes
may not be working properly. Have your
vehicle checked as soon as possible. WARNING:
Always fully apply the
parking brake and make sure you shift
into park (P). Failure to follow this
instruction could result in personal injury
or death.
On some four-wheel drive vehicles, when
the transfer case is in the neutral (N)
position, the engine and transmission
disconnect from the rest of the driveline.
Therefore, your vehicle is free to roll even
if it is parked. Do not leave your vehicle
unattended with the transfer case in the
neutral (N) position. Always set the parking
brake fully and turn off the ignition when
leaving your vehicle.
Maintenance and Modifications
The suspension and steering systems on
your vehicle have been designed and
tested to provide predictable performance
whether loaded or empty. For this reason,
we strongly recommend that you do not
make modifications such as adding or
removing parts, for example, lift kits or
stabilizer bars, or by using replacement
parts not equivalent to the original factory
equipment.
We recommend that you use caution when
your vehicle has either a high load or
device, such as ladders or luggage racks.
Any modifications to your vehicle that raise
the center of gravity could cause your
vehicle to roll over when there is a loss of
vehicle control.
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(If Equipped)

PRINCIPLE OF OPERATION
WARNING: Vehicle modifications
involving braking system, aftermarket
roof racks, suspension, steering system,
tire construction and wheel and tire size
may change the handling characteristics
of your vehicle and may adversely affect
the performance of the electronic
stability control system. In addition,
installing any stereo loudspeakers may
interfere with and adversely affect the
electronic stability control system. Install
any aftermarket stereo loudspeaker as
far as possible from the front center
console, the tunnel, and the front seats
in order to minimize the risk of interfering
with the electronic stability control
sensors. Reducing the effectiveness of
the electronic stability control system
could lead to an increased risk of loss of
vehicle control, vehicle rollover, personal
injury and death. WARNING:
Remember that even
advanced technology cannot defy the
laws of physics. It’ s always possible to
lose control of a vehicle due to
inappropriate driver input for the
conditions. Aggressive driving on any
road condition can cause you to lose
control of your vehicle increasing the risk
of personal injury or property damage.
Activation of the electronic stability
control system is an indication that at
least some of the tires have exceeded
their ability to grip the road; this could
reduce the operator ’s ability to control
the vehicle potentially resulting in a loss
of vehicle control, vehicle rollover,
personal injury and death. If your
electronic stability control system
activates, SLOW DOWN.
The system automatically turns on each
time you switch the ignition on. If a fault occurs in either the stability
control or the traction control system, you
may experience the following conditions:
•
The stability and traction control light
illuminates steadily.
• The stability control and traction
control systems do not enhance your
vehicle's ability to maintain traction of
the wheels.
If a driving condition activates either the
stability control or the traction control
system you may experience the following
conditions:
• The stability and traction control light
flashes.
• Your vehicle slows down.
• Reduced engine power.
• A vibration in the brake pedal.
• The brake pedal is stiffer than usual.
• If the driving condition is severe and
your foot is not on the brake, the brake
pedal may move as the system applies
higher brake force.
The stability control system has several
features built into it to help you maintain
control of your vehicle:
Electronic Stability Control
The system enhances your vehicle ’s ability
to prevent skids or lateral slides by
applying brakes to one or more of the
wheels individually and, if necessary,
reducing engine power.
Roll Stability Control
The system enhances your vehicle ’s ability
to prevent rollovers by detecting your
vehicle ’s roll motion and the rate at which
it changes by applying the brakes to one
or more wheels individually.
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DRIVER ALERT
WARNING: The system is designed
to aid the driver. It is not intended to
replace your attention and judgment.
You are still responsible to drive with due
care and attention. WARNING: At all times, you are
responsible for controlling your vehicle,
supervising the system and intervening,
if required. Failure to take care may result
in the loss of control of your vehicle,
serious personal injury or death. WARNING:
The system may not
function if the sensor is blocked. WARNING:
Take regular rest
breaks if you feel tired. Do not wait for
the system to warn you. WARNING:
Certain driving styles
may result in the system warning you
even if you are not feeling tired. WARNING:
In cold and severe
weather conditions the system may not
function. Rain, snow and spray can all
limit sensor performance. WARNING:
The system will not
operate if the sensor cannot track the
road lane markings. WARNING:
If damage occurs in the
immediate area surrounding the sensor,
have your vehicle checked as soon as
possible. WARNING:
The system may not
correctly operate if your vehicle is fitted
with a suspension kit not approved by
us. Note:
Keep the windshield free from
obstructions. For example, bird droppings,
insects and snow or ice.
Note: If the camera is blocked or if the
windshield is damaged, the system may not
function.
Note: If enabled in the menu, the system
activates at speeds above
40 mph
(64 km/h). The system automatically monitors your
driving behavior using various inputs
including the front camera sensor.
If the system detects that your driving
alertness is reduced below a certain
threshold, the system will alert you using
a chime and a message in the information
display.
Using Driver Alert
Switching the system on and off
You may switch the system on or off
through the information display. See
General Information
(page 119). When
activated, the system monitors your
alertness level based upon your driving
behavior in relation to the lane markings,
and other factors.
System Warnings
Note: The system does not issue warnings
below approximately
40 mph (64 km/h).
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The warning system is in two stages. At
first the system issues a temporary warning
that you need to take a rest. This message
will only appear for a short time. If the
system detects further reduction in driving
alertness, another warning may be issued
which will remain in the information display
for a longer time. Press OK on the steering
wheel control to clear the warning. When
active the system will run automatically in
the background and only issue a warning
if required.
Resetting the System
You can reset the system by either:
•
Switching the ignition off and on.
• Stopping your vehicle and then opening
and closing the driver ’s door.
LANE KEEPING SYSTEM 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: Always drive with due
care and attention when using and
operating the controls and features on
your vehicle. WARNING:
In cold and severe
weather conditions the system may not
function. Rain, snow and spray can all
limit sensor performance. WARNING:
The system will not
operate if the sensor cannot track the
road lane markings. WARNING:
The sensor may
incorrectly track lane markings as other
structures or objects. This can result in
a false or missed warning. WARNING:
The system may not
operate properly if the sensor is blocked.
Keep the windshield free from
obstruction. WARNING:
If damage occurs in the
immediate area surrounding the sensor,
have your vehicle checked as soon as
possible. WARNING:
The system may not
correctly operate if your vehicle is fitted
with a suspension kit not approved by
us.
Note: The system works above
40 mph
(64 km/h).
Note: The system works as long as the
camera can detect one lane marking.
Note: When you select aid or alert and aid
mode and the system detects no steering
activity for a short period, the system alerts
you to put your hands on the steering wheel.
The system may detect a light grip or touch
on the steering wheel as hands off driving.
Note: The system may not function if the
camera is blocked, or if the windshield is
damaged or dirty.
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Why is the feature not available (line markings are gray) when I can see the lane markings
on the road?
Lane width is too narrow or too wide.
The camera has not been calibrated after a windshield replacement.
Driving on tight roads or on uneven roads. Why does the vehicle not come back toward the middle of the lane, as expected, in the
Aid or Aid + Alert mode?
High cross winds are present.
There is a large road crown.
Rough roads, grooves or shoulder drop-offs.
Heavy uneven loading of the vehicle or improper tire inflation pressure.
The tires have been changed, or the suspension has been modified.
BLIND SPOT INFORMATION
SYSTEM WARNING: Do not use the blind
spot information system as a
replacement for using the interior and
exterior mirrors or looking over your
shoulder before changing lanes. The
blind spot information system is not a
replacement for careful driving. WARNING:
The system may not
operate properly during severe weather
conditions, for example snow, ice, heavy
rain and spray. Always drive with due
care and attention. Failure to take care
may result in a crash. 259
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Extreme continuous steering may increase
the effort required for you to steer your
vehicle, this increased effort prevents
overheating and permanent damage to
the steering system. You do not lose the
ability to steer your vehicle manually.
Typical steering and driving maneuvers
allow the system to cool and return to
normal operation.
Steering Tips
If the steering wanders or pulls, check for:
•
Correct tire pressures.
• Uneven tire wear.
• Loose or worn suspension
components.
• Loose or worn steering components.
• Improper vehicle alignment.
Note: A high crown in the road or high
crosswinds may also make the steering
seem to wander or pull.
Adaptive Learning (If Equipped)
The electronic power steering system
adaptive learning helps correct road
irregularities and improves overall handling
and steering feel. It communicates with
the brake system to help operate
advanced stability control and accident
avoidance systems. Additionally, whenever
the battery is disconnected or a new
battery installed, you must drive your
vehicle a short distance before the system
relearns the strategy and reactivates all
systems. PRE-COLLISION ASSIST 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, pedestrians at night,
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.
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Sport - For aggressive on-road
driving. This mode increases
throttle response, provides a
sportier steering feel, along with quicker
shifting. The suspension stiffens, with an
emphasis on handling and control. The
transmission also holds gears longer,
helping your vehicle accelerate faster when
shifting gears. Tow/Haul
- For improved
transmission operation when
towing a trailer or a heavy load.
This mode moves upshifts to higher engine
speeds to reduce the frequency of
transmission shifting. This mode also
provides engine braking in all forward
gears, which slows your vehicle and assists
you in controlling your vehicle when
descending a grade. The amount of
downshift braking provided varies based
on the amount you press the brake pedal.
Note: All transmission gear ranges are
available when using
Tow/Haul. ECO
- For efficient and
responsible driving. This mode
helps deliver maximum fuel
efficiency and increases driving range.
Off-Road Modes Snow/Wet
(4X2) or Grass/
Gravel/Snow (4WD) - For firm
surfaces covered with loose or
slippery material such as packed
snow, ice, water, grass or a thin
layer of gravel or sand. Sand
- For soft dry sand or deep
gravel. Mud/Ruts
- For muddy, rutted,
soft or uneven terrain.
Note: The system has diagnostic checks
that continuously monitor the system for
proper operation. Certain drive modes are
not available based on gear shifter position.
If a mode is unavailable due to a system
fault, the mode defaults to
Normal.
Transfer Case Availability
If Equipped with Rotary Drive Mode Switch Sand
Mud/Ruts
Tow/
Haul
Grass/
Gravel/ Snow
ECO
Sport
Normal
Not Avail-able
Not Avail-
able
Available
Not Avail-
able
Default
Available
Default
2H
Default
Off Road Tuning
Default
Off Road Tuning
Available
Default
Slippery Tuning
Available
NormalTuning
Default
Sport
Tuning
Avail-
able
Normal Tuning
4A
Available
Available
Available
Available
Not Avail-
able
Not Avail-
able
Avail-
able
4L 1
1 If Equipped.
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TOWING A TRAILER
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 GVWR or the GAWR
specified on the certification
label.
Your vehicle may have electrical
items, such as fuses or relays,
related to towing. See
Fuses
(page 325).
Some vehicles may have the
ability to modify trailer towing
features. See Towing (page
285).
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. 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 and
right side trailer tires.
• 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.
• Select a ball mount with the
correct rise or drop and load
capacity. 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
located in another chapter of this
manual. See
Load Limit (page
279).
You can also find information in
the
RV & Trailer Towing Guide
available at your authorized
dealer, or online.
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