2017 FORD FLEX brake sensor

Brake System
Action
Message
The brake fluid level is low and the brake system should be
inspected immediately. See Brake Fluid Check (page 255).
Brake Fluid Level Low
The brake system needs servicing. Stop the vehicle in a safeplace. Contact an authorized dealer.
Check Brake System
The parking brake is set, the engine is running and you drive
your vehicle more than 3 mph (5 km/h). If the warning stays on after the parking brake is released, contact an authorized dealer as soon as possible.
Park Brake Engaged
Collision Warning System Action
Message
There is a system malfunction with the collision warning
system. The system will be disabled. Contact an authorized dealer as soon as possible.
Collision Warning
Malfunction
The collision warning system radar is blocked because of poorradar visibility due to bad weather or ice/mud/water in frontof the radar. Driver can typically clean the sensor to resolve. Contact an authorized dealer as soon as possible.
Collision Warning Not
Available Sensor
Blocked See Manual
There is a system malfunction with the collision warning
system. The system will be disabled. Contact an authorized dealer as soon as possible.
Collision Warning Not
Available
Doors and Locks Action
Message
The door listed is not completely closed.
X Door Ajar
The luggage compartment is not completely closed.
Trunk Ajar
The driver’s door is opened, your vehicle is in park and the
engine is on.
Engine ON
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Flex (), enUSA, First Printing Information Displays

PRINCIPLE OF OPERATION
WARNINGS
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. 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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PRINCIPLE OF OPERATION
WARNINGS
To help avoid personal injury, please
read and understand the limitations
of the system as contained in this
section. Sensing is only an aid for some
(generally large and fixed) objects when
moving on a flat surface at parking speeds.
Certain objects with surfaces that absorb
ultrasonic waves, surrounding vehicle's
parking aid systems, traffic control
systems, fluorescent lamps, inclement
weather, air brakes, and external motors
and fans may also affect the function of
the sensing system; this may include
reduced performance or a false activation. To help avoid personal injury, always
use caution when in reverse (R) and
when using the sensing system.
This system is not designed to
prevent contact with small or moving
objects. The system is designed to
provide a warning to assist the driver in
detecting large stationary objects to avoid
damaging your vehicle. The system may
not detect smaller objects, particularly
those close to the ground. Certain add-on devices such as large
trailer hitches, bike or surfboard racks
and any device that may block the
normal detection zone of the system, may
create false beeps. Note:
Keep the sensors, located on the
bumper or fascia, 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: If your vehicle sustains damage to
the bumper or fascia, leaving it misaligned
or bent, the sensing zone may be altered
causing inaccurate measurement of
obstacles or false alarms. Note:
The sensing system cannot be turned
off when a MyKey is present. See Principle
of Operation (page 57).
Note: If you attach certain add-on devices
such as a trailer or bike rack, the rear sensing
system may detect that add-on device and
therefore provide warnings. It is suggested
that you disable the rear sensing system
when you attach an add-on device to your
vehicle to prevent these warnings.
The sensing system warns the driver of
obstacles within a certain range of your
vehicle. The system turns on automatically
whenever you switch the ignition on.
The system can be switched off through
the information display menu or from the
pop-up message that appears once you
shift the transmission into reverse (R). See
General Information
(page 99).
If a fault is present in the system, a warning
message appears in the information
display. See
Information Messages
(page 107).
REAR PARKING AID
The rear sensors are only active when the
transmission is in reverse (R). As your
vehicle moves closer to the obstacle, the
rate of the audible warning increases.
When the obstacle is less than
12 in
(30 cm) away, the warning sounds
continuously. If the system detects a
stationary or receding object farther than
12 in (30 cm)
from the corners of the
bumper, the tone sounds for only three
seconds. Once the system detects an
object approaching, the warning sounds
again.
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Flex (), enUSA, First Printing Parking Aids

Coverage area of up to 6 ft (1.8 m) from
the rear bumper. There may be decreased
coverage area at the outer corners of the
bumper.
The system detects certain objects while
the transmission is in reverse (R) :
• Your vehicle is moving toward a
stationary object at a speed of
3 mph
(5 km/h) or less.
• Your vehicle is not moving, but a
moving object is approaching the rear
of your vehicle at a speed of
3 mph
(5 km/h) or less.
• Your vehicle is moving at a speed of
less than 3 mph (5 km/h) and a moving
object is approaching the rear of your
vehicle at a speed of less than
3 mph
(5 km/h).
The system provides audio warnings only
when your vehicle is moving or when your
vehicle is stationary and the detected
obstacle is less than
12 in (30 cm) away
from the bumper. ACTIVE PARK ASSIST (If Equipped) WARNINGS
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. 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. The sensors may not detect objects
in heavy rain or other conditions that
cause interference.
Active park assist does not apply the
brakes under any circumstances.
Note:
Keep the sensors, located on the
bumper or fascia, free from snow, ice and
large accumulations of dirt. Covered sensors
can affect the systems accuracy. Do not
clean the sensors with sharp objects.
Note: The sensors may not detect objects
with surfaces that absorb ultrasonic waves.
Active Park Assist is an electric parking aid
that uses ultrasonic sensors. The system
detects an available parallel parking space
and automatically steers your vehicle into
the space (hands-free) while you control
the accelerator, gearshift and brakes. The
system visually and audibly instructs you
to park your vehicle.
The system may not function correctly if
something passes between the front
bumper and the parking space (a
pedestrian or cyclist) or if the edge of the
neighboring parked vehicle is high off the
ground (for example, a bus, tow truck or
flatbed truck). If you are uncomfortable
with the proximity to any vehicle or object,
you may choose to override the system.
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Flex (), enUSA, First Printing Parking AidsE130178

Certain vehicle conditions can also
deactivate the system, such as:
•
Traction control has activated on a
slippery or loose surface.
• There is an anti-lock brake system
activation or failure.
• Something touches the steering wheel. If a problem occurs with the system, a
warning message is displayed, followed
by a chime. Occasional system messages
may occur in normal operation. For
recurring or frequent system faults, contact
an authorized dealer to have your vehicle
serviced.
Troubleshooting the System The system does not look for a space
The traction control system may be off.
The transmission is in reverse (R); your vehicle must be moving forward to detect a
parking space. The system does not offer a particular space
The sensors may be covered (for example, snow, ice or dirt buildup). Covered sensors
can affect the system's functionality
There is not enough room in the parking space for your vehicle to safely park.
There is not enough space for the parking maneuver on the opposite side of the parking
space.
The parking space is farther than 5 ft (1.5 m) or closer than 16 in (40 cm) away.
Your vehicle is going faster than
22 mph (35 km/h).
You may have recently disconnected or replaced the battery. After a battery disconnect,
the vehicle must be driven on a straight road at a speed greater than 12 mph (20 km/h)
for up to 30 seconds. The system does not position your vehicle where I want in the space
Your vehicle is rolling in the opposite direction of the transmission (rolling forward when
reverse [R] is selected).
An irregular curb along the parking space prevents the system from aligning your vehicle
properly.
Vehicles or objects bordering the space may not be positioned correctly.
Your vehicle was pulled too far past the parking space.
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Setting the Adaptive Cruise Speed
1. Drive to desired speed.
2. Press and release SET+ or SET-.
3. A green indicator light, the current gap
setting and your set speed appear in
the information display.
4. Take your foot off the accelerator pedal. 5. A vehicle graphic illuminates if there is
a vehicle detected in front of you.
Note: When adaptive cruise control is
active, the speedometer may vary slightly
from the set speed displayed in the
information display. Following a Vehicle WARNINGS
When following a vehicle, your
vehicle does not decelerate
automatically to a stop, nor does
your vehicle always decelerate quickly
enough to avoid a crash without driver
intervention. Always apply the brakes when
necessary. Failing to do so may result in a
crash, serious injury or death. Adaptive cruise control only warns
of vehicles detected by the radar
sensor. In some cases there may be
no warning or a delayed warning. You
should always apply the brakes when
necessary. Failure to do so may result in a
crash, serious injury or death. 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 brake lamps
automatically turn on when the system
applies the brakes. The maximum braking
which the system applies is limited. You
can override the system by applying the
brakes.
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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. The radar sensor has a limited field of
vision. 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. Detection issues can occur:
With vehicles that edge into your
lane that can only be detected
once they have moved fully into
your lane.
A
Motorcyclists may be detected
late, or not at all.
B
With vehicles in front of you
when going into and coming out
of a bend. The detection beam
does not follow sharp curves in
the road.
C
In these cases the system may brake late
or unexpectedly. You should stay alert and
intervene if necessary.
If something hits the front of your vehicle
or damage occurs, the radar-sensing zone
may change. This could cause missed or
false vehicle detections. Contact an
authorized dealer as soon as possible.
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 193
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A message displays if something obstructs
the radar signals from the sensor. The
sensor is located on the lower grille. The
system cannot detect a vehicle ahead and
does not function when something
obstructs the radar signals.
The following table lists 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 in the grille is dirty
or obstructed in some way.
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 in the grille 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.
Swirling water, or 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 and not
be blocked. This can happen, for example,
when driving in sparse rural environments.
A false blocked condition self clears or
clears after a key cycle.
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. You can manually change from adaptive
cruise control to normal cruise control
through the information display. The cruise control indicator light
replaces the adaptive cruise
control indicator light if you
select normal cruise control. The gap
setting does not display, the system does
not automatically respond to lead vehicles.
Automatic braking remains active to
maintain set speed.
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Flex (), enUSA, First Printing Cruise ControlE71340