2011 FORD EXPLORER sensor

Using hill start assist
The hill start assist feature is activated automatically when the vehicle is
stopped on a slope greater than five degrees. The hill start assist feature
operates with the vehicle facing downhill if reverse gear is selected. The
hill start assist feature will not operate if the parking brake is activated.
WARNING:You must remain in the vehicle once you have
activated the hill start assist feature.
Activating hill start assist
1. Press the brake pedal to bring the vehicle to a complete standstill.
Keep the brake pedal pressed.
2. If the sensors detect that the vehicle is on a slope, the hill start assist
feature will be activated automatically.
3. When you remove your foot from the brake pedal, the vehicle will
remain on the slope without rolling away for approximately up to two
seconds. This hold time will automatically be extended if you are in the
process of driving off.
4. Drive off in the normal manner. The brakes will be released
automatically.
WARNING:If the engine is revved excessively, or if a
malfunction is detected when the hill start assist feature is
active, the hill start assist feature will be deactivated.
If your vehicle gets stuck in mud or snow
If your vehicle gets stuck in mud or snow, it may be rocked out by
shifting between forward and reverse gears, stopping between shifts in a
steady pattern. Press lightly on the accelerator in each gear.
Do not rock the vehicle if the engine is not at normal operating
temperature or damage to the transmission may occur.
Do not rock the vehicle for more than a minute or damage to the
transmission and tires may occur, or the engine may overheat.
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The RSS detects obstacles up to six
feet (two meters) from the rear
bumper with a decreased coverage
area at the outer corners of the
bumper, (refer to the figures for
approximate zone coverage areas).
As you move closer to the obstacle,
the rate of the tone increases. When
the obstacle is less than 10 inches
(25.0 cm) away, the tone will sound
continuously. If the RSS detects a
stationary or receding object further
than 10 inches (25.0 cm) from the
side of the vehicle, the tone will
sound for only three seconds. Once
the system detects an object
approaching, the tone will sound
again.
While receiving a warning the radio volume will be reduced to a
predetermined level. After the warning goes away, the radio will return
to the previous value.
Note:If the system cannot be turned off, refer toMyKey™in theLocks
and Securitychapter for more information
The RSS automatically turns on when the gearshift lever is placed in R
(Reverse) and the ignition is on. A control in the message center allows
the driver to disable the system, refer toMessage centerin the
Instrument Clusterchapter for more information.
Keep the RSS sensors (located on the rear bumper/fascia) free
from snow, ice and large accumulations of dirt (do not clean the
sensors with sharp objects). If the sensors are covered, it will
affect the accuracy of the RSS.
If your vehicle sustains damage to the rear bumper/fascia, leaving
it misaligned or bent, the sensing zone may be altered causing
inaccurate measurement of obstacles or false alarms.
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Operation
The radar sensor detects vehicles
ahead that are moving in the same
direction as your vehicle.
If the radar detects that your
vehicle is rapidly closing on another
vehicle a red warning light will
illuminate and an audible warning
chime will sound.
After that, if the risk of collision
further increases after the warning
light, the brake support prepares
the brake system for rapid braking.
This may be apparent to the driver.
However, the system will not
automatically activate the brakes.
The vehicle will not stop unless the driver presses the brake pedal. If the
brake pedal is pressed then braking is implemented with full brake
function, even if the force on the brake pedal is light.
The collision warning system is active at speeds above approximately
5 mph (8 km/h).
Collision warning system limitations
Due to the nature of radar technology, there may be certain instances
where vehicles will not provide a collision warning. These include:
•Stationary or slow moving vehicles below 6 mph (10 km/h).
•Pedestrians or objects in the roadway.
•Oncoming vehicles in the same lane.
•Severe weather conditions (see also blocked sensor section).
•Debris build-up on the grille near the headlamps (see block sensor
section).
•Small distance to vehicle ahead.
•
Steering wheel and pedal movements are large (very active driving style).
•High interior temperatures, which may deactivate the illumination or
the warning lamps until the interior temperature reduces (audible
warning will alert the driver).
In addition, sun load and sunglasses may reduce the visibility of the warning
lamps. Therefore, it is recommended to keep the audible warning on.
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WARNING:The collision warning system’s brake support can
only help reduce the speed at which a collision occurs if the
driver applies the vehicle’s brakes. The brake pedal must be pressed
just like for any typical braking situation.
Blocked sensor
If a message regarding a blocked
sensor is displayed, the radar signals
from the sensor, located behind a
fascia cover near the driver side of
the lower grille, have been
obstructed. When the radar signals
are obstructed, a vehicle ahead
cannot be detected and the collision
warning system will not function.
The following table lists possible
causes and actions for this message being displayed.
Cause Action
The surface of the radar in the
grille is dirty or obstructed in
some wayClean the grille surface in front of
the radar or remove the object
causing the obstruction
The surface of the radar in the
grille is clean but the message
remains in the displayWait a short time. It may take
several minutes for the radar to
detect that it is no longer
obstructed
Heavy rain, spray, snow, or fog is
interfering with the radar signalsThe collision warning system is
temporarily disabled. Collision
warning should automatically
reactivate a short time after the
weather conditions improve.
Swirling water, or snow or ice on
the surface of the road may
interfere with the radar signalsThe collision warning system is
temporarily disabled. Collision
warning should automatically
reactivate a short time after the
weather conditions improve.
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The system should not be used if:
•a foreign object (i.e. bike rack, trailer, etc.) is attached to the front or
rear of the vehicle or at another location close to the sensors.
•the front bumper or side sensors are damaged (i.e. in a collision) or
obstructed by a foreign object (i.e. front bumper cover).
•a mini-spare tire is used.
Troubleshooting
Why isn’t APA searching for a parking space?
•You may have deactivated the AdvanceTracsystem.
•One of the doors (except the driver’s door) may not be securely
closed.
Why doesn’t APA offer a particular parking space?
•Something may be contacting the front bumper or side sensors. Clear
any material stuck to the sensors.
•There may not be enough room to maneuver the vehicle into the
space. Remember, there needs to be enough space on the opposite
side of the vehicle to allow the front of the vehicle to swing out as you
back into the space.
•The vehicle is not driven close enough to the parking space, less than
60 inches (1.5 m) from neighboring parked vehicles.
•The vehicle is driven too close to the side objects (e.g. less than
16 inches [41 cm] from neighboring parked vehicles).
•You may be driving in R (Reverse). APA can only look for a parking
space while moving forward.
Why doesn’t APA position the vehicle where I want in the space?
•The driver allows the vehicle to roll in the opposite direction of the
transmission (such as rolling forward when R (Reverse) gear is
selected.
•You may be driving in R (Reverse). APA can only look for a parking
space while moving forward.
•There may be an irregular curb along the parking space. APA might
not be able to align the vehicle to curbs that are damaged, very
shallow or covered with material such as debris, leaves, snow, or tarps.
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The BLISwill trigger the alert for vehicles that enter your blind zone
from the rear or merge in to the blind zone from the side. Vehicles that
you pass, or a vehicle that enters the blind zone from the front, will
trigger the alert only after the vehicle is present in the blind zone for
three seconds.Note:For vehicles that pass through the blind zone
quickly, typically less than two seconds, the BLISwill not illuminate the
alert.
The BLISconsists of two radar
sensors each located rearward of
the rear wheels hidden behind the
bumper fascia. Do not place any
type of bumper sticker in this area.
Note:The BLIStypically will not
detect parked vehicles, humans,
animals, or infrastructure (fences,
guard rails, trees, etc.). The BLIS
does not function when the transmission is in R (Reverse) or P (Park).
The BLISdoes not provide any additional warning when your turn
signal is activated.
BLISdetection limitations:Due to the nature of radar technology,
there may be certain instances where vehicles entering and exiting the
blind spot zones may not be detected. Below is a list of circumstances
that may cause non-detection:
•Debris build-up on the rear quarter panel fascias
•Certain maneuvering of vehicles entering and exiting the blind zone
•Vehicles passing through the blind zone at very fast rates
•Severe weather conditions
•When several vehicles forming a convoy pass through the blind zone.
BLISFalse Alerts
Due to the nature of radar technology, there may be certain instances
when the BLISwill alert with no object present in the blind zone. This
is known as a false alert. Some level of false alerts are normal.
Circumstances that may cause a false alert are guardrails, freeway
concrete walls, cyclone fencing, sharp turns around a pole or building, or
coming to a stop with a vehicle directly behind but very close. False
alerts are temporary and self correct.
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Cross traffic alert (CTA) system operation
The CTA system warns the driver of approaching vehicles when R
(Reverse) is selected and the vehicle is backing out of a front-in parking
spot. It sounds a series of tones and flashes the BLISindicator found on
the exterior mirror on the side of the approaching vehicle. Additionally,
the message center will display either, VEHICLE COMING FROM RIGHT
or VEHICLE COMING FROM LEFT to warn the driver from which
direction vehicles are approaching.
The system is not designed to prevent contact with other vehicles or
objects. The system is designed to provide a warning to assist the driver
in detecting vehicles in the blind zones. The system will not detect
infrastructure, pedestrians, or bicyclists.
WARNING:To help avoid personal injury, NEVER use the CTA
system as a replacement for using the side and rear view mirrors
and looking over your shoulder before backing out of a parking space.
CTA is not a replacement for careful driving and only an assist.
The CTA system detects vehicles approaching up to 45 feet (14 meters)
away. Coverage decreases when vehicles and objects in close proximity
block the CTA sensors (refer to figure for approximate zone coverage
areas[sensor obstructed for vehicle on left]). Backing slowly from
the parking spot in these situations helps to increase the sensor coverage
and effectiveness.
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CTA coverage also decreases when parking at shallow angles (refer to
figure for approximate zone coverage areas[sensor obstructed for
vehicle on left]).
CTA detection limitations:Due to the nature of radar technology,
there may be certain instances where vehicles entering and exiting the
blind spot zones may not be detected. Below is a list of circumstances
that may cause non-detection:
•Debris build-up on the rear quarter panel fascias
•The rear quarter panel radar beams are obstructed or partially
obstructed by an adjacently parked vehicle or object.
•Approaching vehicles passing at speeds greater than 15 mph
(24 km/h)
•Severe weather conditions
•Driving in reverse faster than 3 mph (5 km/h)
•Backing out of an angled parking spot
CTA false alerts
Due to the nature of radar technology, there may be certain instances
when the BLISwill alert with no object present when backing up. This
is known as a false alert. Some level of false alerts are normal.
Circumstances that may cause a false alert when backing up are backing
out of a garage, backing in to a parking space, and objects very close to
the sensor. False alerts are temporary and self correct.
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