2018 FORD EXPEDITION power steering

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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If the sensors are blocked, a message may
appear in the information display when
you shift into reverse (R). See
Information Messages (page 123).
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 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.
System Errors
If the system detects a fault a message
displays. See General Information (page
111
).
Switching the System Off and On
You can temporarily switch the system off
using the information display. See
General
Information (page 111). When you switch
system off, a message displays. See
Information Messages (page 123).
Note: The system turns on each time you
switch the ignition on and you shift into
reverse (R). If you temporarily switch the
system off, it turns on the next time you
switch the ignition on.
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.
STEERING
Electric Power Steering
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 ignition off. After at least 10
seconds, switch the ignition on and
watch the information display for a
steering system warning message. If a
steering system warning message
returns, have the system checked by an
authorized dealer. WARNING:
If the system detects
an error, you may not feel a difference in
the steering, however a serious condition
may exist. Obtain immediate service
from an authorized dealer, failure to do
so may result in loss of steering control.
Your vehicle has an electric power steering
system. There is no fluid reservoir. No
maintenance is required.
If your vehicle loses electrical power while
you are driving, electric power steering
assistance is lost. The steering system still
operates and you can steer your vehicle
manually. Manually steering your vehicle
requires more effort.
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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
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 (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.
Failure to take care may result in the loss
of control of your vehicle, serious
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: In situations where the
vehicle camera has limited detection
capability, this may reduce system
performance. These situations include
but are not limited to direct or low
sunlight, vehicles at night without tail
lights, unconventional vehicle types,
pedestrians with complex backgrounds,
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Action
Cause
Contact an authorized dealer to have theradar checked for proper coverage and operation.
Radar is out of alignment due to a front end
impact.
Clean the outside of the windshield in frontof the camera.
The windshield in front of the camera is
dirty or obstructed in some way.
Wait a short time. It may take several
minutes for the camera to detect that there is no obstruction.
The windshield in front of the camera is
clean but the message remains in the display.
Note: Proper system operation requires a
clear view of the road by the camera. Have
any windshield damage in the area of the
camera's field of view repaired.
Note: 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 detections. Contact an
authorized dealer to have the radar checked
for proper coverage and operation.
Note: If your vehicle detects excessive heat
at the camera or a potential misalignment
condition, a message may display in the
information display indicating temporary
sensor unavailability. This message
deactivates automatically when operational
conditions are correct. For example, when
the ambient temperature around the sensor
decreases or the sensor automatically
recalibrates successfully.
DRIVE CONTROL
Selectable Drive Modes
The system delivers a driving experience
through a suite of sophisticated electronic
vehicle systems. These systems optimize
steering, handling and powertrain
response. This provides a single location
to control multiple systems performance
settings. Changing the drive mode automatically
changes the functionality of the following
systems:
•
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 216).
• 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:
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•
Do not warm up your vehicle on cold
mornings.
• Reduce the use of air conditioning and
heat.
• Avoid using speed control in hilly
terrain.
• Do not rest your foot on the brake
pedal while driving.
• Avoid carrying unnecessary weight.
• Avoid adding particular accessories to
your vehicle (e.g. bug deflectors,
rollbars/light bars, running boards, ski
racks).
• Avoid driving with the wheels out of
alignment.
DRIVING THROUGH WATER WARNING: Do not drive through
flowing or deep water as you may lose
control of your vehicle.
Note: Driving through standing water can
cause vehicle damage.
Note: Engine damage can occur if water
enters the air filter.
Before driving through standing water,
check the depth. Never drive through water
that is higher than the bottom of the wheel
hubs. When driving through standing water, drive
very slowly and do not stop your vehicle.
Your brake performance and traction may
be limited. After driving through water and
as soon as it is safe to do so:
•
Lightly press the brake pedal to dry the
brakes and to check that they work.
• Check that the horn works.
• Check that the exterior lights work.
• Turn the steering wheel to check that
the steering power assist works.
FLOOR MATS WARNING:
Use a floor mat
designed to fit the footwell of your
vehicle that does not obstruct the pedal
area. Failure to follow this instruction
could result in the loss of control of your
vehicle, personal injury or death. WARNING:
Pedals that cannot
move freely can cause loss of vehicle
control and increase the risk of serious
personal injury.
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Protected Component
Fuse Rating
Fuse Number
4x4 module.
10A 1
13
Heated backlite.
Heated mirror relay coil.
Heated wiper park relay coil.
Transmission isolation relay coil.
Transmission control module.
15A 1
14
Voltage quality module run/start power.
15A 1
15
Blindspot information system.
Head Up Display.
Image processing module B.
Front view camera.
Rear view camera.
Cruise control module.
Powertrain control module (PCM) run/
start feed.
10A 1
16
Antilock brake system run/ start feed.
10A 1
17
Electronic power assist steering run / start
feed.
10A 1
18
Not used.
—
19
Front blower.
40A 2
20
Passenger seat motors.
40A 2
21
Not used.
20A 1
22
Alternator A-line.
10A 1
23
Trailer brake control module.
30A 2
24
Body control module power 1.
50A 2
25
Electronic fan 3.
50A 2
26
Driver seat motors.
40A 2
27
Rear heated seats.
15A 1
28
Integrated wheel end solenoid.
10A 1
29
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Protected Component
Fuse Rating
Fuse or Relay
Number
Trailer brake controller.
5A 1
4
Speaker amplifier.
20A 1
5
Not used (spare).
10A 2
6
Not used (spare).
10A 2
7
Not used.
—
8
Rear seat entertainment module.
10A 2
9
Head up display.
Wireless accessory charger module.
5A 2
10
Hands free liftgate module.
Power liftgate module.
Keypad.
5A 2
11
Combined sensor module.
Cluster.
7.5A 2
12
Electronic control panel.
Smart datalink connector logic.
Gear shift module.
7.5A 2
13
Steering column control module.
Extended power module.
10A 2
14
Brake switch.
Smart datalink connector power.
10A 2
15
Liftglass release.
15A 1
16
Telematics control unit - modem.
5A 2
17
Ignition switch.
5A 2
18
Key inhibit solenoid.
Push button start switch.
Transmission control switch.
7.5A 2
19
Gearshift module.
Not used.
7.5A 2
20
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Protected Component
Fuse Rating
Fuse or Relay
Number
Heated steering wheel.
20A 1
37
Left rear power window.
30A Circuit Breaker
38
Right rear power window.
1 Micro 2 fuse.
2 Micro 3 fuse.
CHANGING A FUSE
Fuses WARNING: Always replace a fuse
with one that has the specified
amperage rating. Using a fuse with a
higher amperage rating can cause severe
wire damage and could start a fire. If electrical components in the vehicle are
not working, a fuse may have blown. Blown
fuses are identified by a broken wire within
the fuse. Check the appropriate fuses
before replacing any electrical
components.
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