2020 FORD EXPEDITION engine

PRINCIPLE OF OPERATION
The traction control system helps avoid
drive wheel spin and loss of traction.
If your vehicle begins to slide, the system
applies the brakes to individual wheels
and, when needed, reduces engine power
at the same time. If the wheels spin when
accelerating on slippery or loose surfaces,
the system reduces engine power in order
to increase traction.
USING TRACTION CONTROL
WARNING: The stability and
traction control light illuminates steadily
if the system detects a failure. Make sure
you did not manually disable the traction
control system using the information
display controls or the switch. If the
stability control and traction control light
is still illuminating steadily, have the
system serviced by an authorized dealer
immediately. Operating your vehicle with
the traction control disabled could lead
to an increased risk of loss of vehicle
control, vehicle rollover, personal injury
and death.
The system automatically turns on each
time you switch the ignition on.
If your vehicle is stuck in mud or snow,
switching traction control off may be
beneficial as this allows the wheels to spin.
Note: When you switch traction control off,
stability control remains fully active.
Switching the System Off When you switch the system off,
a message and an illuminated
icon appear on the instrument
cluster. Use the switch again to return the traction
control system to normal operation.
The switch for the stability and traction
control system is on the instrument panel.
Your vehicle may have MyKey restrictions
regarding this feature. See
Principle of
Operation (page 64).
System Indicator Lights and
Messages The stability and traction control
light temporarily illuminates on
engine start-up and flashes:
• When a driving condition activates
either of the systems.
• If a problem occurs in either of the
systems. The stability and traction control
off light temporarily illuminates
on engine start-up and stays on:
• When you switch the traction control
system off.
• When you select an alternative stability
control mode.
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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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Traction Control
The system enhances your vehicle
’s ability
to maintain traction of the wheels by
detecting and controlling wheel spin. See
Using Traction Control (page 213). Vehicle without stability control
skidding off its intended route.
A
Vehicle with stability control
maintaining control on a slippery
surface.
B USING STABILITY CONTROL
Stability Control and Traction
Control with Roll Stability
Control
™ (RSC™)
The system automatically activates when
you start your engine. You can switch off
the electronic stability control and roll
stability control portions of the system
below 35 mph (56 km/h). When the
transmission is in reverse (R), they are
disabled. You can switch off the traction
control portion of the system
independently. See
Using Traction
Control (page 213). Stability Control and Traction Control with RSC Features
Traction
control system
Electronic
stabilitycontrol
Roll stability
control
Stability
control OFF light
Button func-
tions
Enabled
Enabled
Enabled
Illuminated
during bulb check
Default at start-
up
Disabled 1
Enabled 1
Enabled
Illuminated
Button pressed
momentarily
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AA
B
BB
B

Stability Control and Traction Control with RSC Features
Disabled 4
Disabled
Disabled
Flashes then
illuminated
solid 2
Button pressed
and held for
more than 5 seconds at
vehicle speed
under 35 mph (56 km/h)
Disabled1
Enabled 1
Enabled
Illuminated
Vehicle speed
exceeds 35 mph (56 km/h) after button is
pressed and
held for more
than 5 seconds
Enabled
Enabled
Enabled
Not illuminated
Button pressed
again after
deactivation
Disabled 4
Disabled
Disabled
Illuminated
Button not
pressed and the transfer case is
switched to 4X4
Low3
1 The traction control system may still be enabled but with higher entry thresholds
compared to the full system. The electronic stability control entry thresholds are higher
compared to the full system.
2 When you press and hold the button for more than 5 seconds the indicator lamp blinks
for three seconds.
3 Your vehicle may or may not have this feature available. When you select 4X4 Low the
stability control light illuminates and all stability control with RSC features are disabled.
4 Engine traction control and two-wheel spin brake traction control functions are disabled.
Single wheel spin traction control is always enabled.
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Park Brake Application
Automatic parking brake application and
cancellation occurs if:
•
You unbuckle the seatbelt and open
the door after you stop the vehicle.
• You hold the vehicle at a stop
continuously for more than three
minutes.
Hilly Condition 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.
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 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. 241
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•
Box trailers that have a width greater
than 8.5 ft (2.6 m) at the front may
cause early alerts when you pass a
vehicle.
• Clam shell or V-Nose box trailers with
a width greater than
8.5 ft (2.6 m) at
the front may cause delayed alerts
when a vehicle traveling the same
speed as your vehicle merges lanes.
System Errors
If the system detects a fault, a warning
lamp illuminates and a message displays.
See
Information Messages (page 123).
Switching the System On and Off
You can switch the system off using the
information display.
See General
Information (page 114). When you switch
the system off, a warning lamp illuminates
and a message displays. When you switch
the system on or off, the alert indicators
flash twice.
Note: The system remembers the last
setting when you start your vehicle.
Note: The system may not correctly operate
when towing a trailer. For vehicles with a
trailer tow module and tow bar approved
by us, the system turns off when you attach
a trailer. For vehicles with an aftermarket
trailer tow module or tow bar, we
recommend that you switch the system off
when you attach a trailer.
To permanently switch the system off,
contact an authorized dealer. CROSS TRAFFIC ALERT WARNING:
Do not use the cross
traffic alert system as a replacement for
using the interior and exterior mirrors or
looking over your shoulder before
reversing out of a parking space. The
cross traffic alert 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.
The system alerts you of vehicles
approaching from the sides behind your
vehicle when you shift into reverse (R).
Using Cross Traffic Alert
The system detects vehicles that approach
at a speed between
4 mph (6 km/h) and
37 mph (60 km/h). Coverage decreases
when the sensors are partially, mostly or
fully obstructed. Slowly reversing helps
increase the coverage area and
effectiveness.
The system turns on when you start the
engine and you shift into reverse (R). The
system turns off when you shift out of
reverse (R).
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•
Electronically power-assisted steering
system adjusts steering effort and feel
based on the mode you select. See
Steering (page 256).
• Electronic stability control and traction
control maintain your vehicle control
in adverse conditions or high
performance driving. See
Stability
Control (page 214).
• Electronic throttle control enhances
the powertrain response to your inputs.
• Driveline settings optimize with shift
schedules tuned to each drive mode.
Using the System
The system automatically tailors your
vehicle configuration for each mode you
select.
The drive mode switch is in one of three
places, depending on your vehicle
configuration:
On the column shifter On the center console
On the
DRIVE MODE rotary switch.
Note:
Mode changes are not available when
the vehicle ignition is off or when the engine
is not running.
On-Road Modes Normal
- For everyday driving.
This mode is a perfect balance
of excitement, comfort and
convenience.
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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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