sensor INFINITI QX80 2014 Service Manual

SSD0284A
NOTE:
The approach warning chime may sound
and the system display may blink when
the ICC sensor detects some reflectors
*A
which are fitted on vehicles in other lanes
or on the side of the road. This may cause
the ICC system to decelerate or accelerate
the vehicle. The ICC sensor may detect
these reflectors when the vehicle is driven
on winding roads, hilly roads or when
entering or exiting a curve. The ICC sensor
may also detect reflectors on narrow roads
or in road construction zones. In these
cases you will have to manually control
the proper distance ahead of your vehicle.Also, the sensor sensitivity can be affected
by vehicle operation (steering maneuver or
driving position in the lane) or traffic or
vehicle condition (for example, if a vehicle
is being driven with some damage).
Automatic cancellation
A chime sounds under the following con-
ditions and the control is automatically
canceled.
.
When the vehicle speed falls below
approximately 15 MPH (24 km/h)
. When the system judges the vehicle is
at a standstill
. When the shift lever is shifted to the N
(Neutral) position
. When the windshield wipers are operat-
ing at high speed. The system may
cancel when the wipers are set to the
AUTO position.
. When the VDC is turned off
. When the ABS or VDC operates
. When the parking brake is applied
. When the SNOW mode switch is pushed
on.
. When the 4WD shift switch is in the 4H
or 4L position (for 4WD models) .
When driving into a strong light (for
example, sunlight)
. When distance measurement becomes
impaired due to adhesion of dirt or
obstruction to the sensor
. When a wheel slips
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SSD1110
Warning light and display
Condition A:
The chime sounds and the Intelligent
Cruise Control (ICC) system is canceled
automatically in the conditions described
below. Part of the system display will come
on or blink, making it impossible to set.
.When the VDC is turned off
. When the ABS or VDC operates
. When a tire slips
. When driving into a strong light (for
example, sunlight)
. When the SNOW mode switch is pushed
on .
When the 4WD shift switch is in the 4H
or 4L position (for 4WD models)
Action to take:
When the conditions listed above are no
longer present, turn the system off using
the ICC MAIN switch. Turn the ICC system
back on to use the system.
SSD0989
Condition B:
When the sensor window is dirty, making it
impossible to detect a vehicle ahead, the
ICC system is automatically canceled.
The chime sounds and the ICC system
warning light (orange) will come on and the
CLEAN SENSOR indicator will appear.
Action to take:
If the warning light comes on, park the
vehicle in a safe place, turn the engine off.
Clean the sensor window with a soft cloth
and then perform the settings again.

SSD0979
Condition C:
When the ICC system is not operating
properly, the chime sounds and the system
warning light (orange) will come on.
Action to take:
If the warning light comes on, park the
vehicle in a safe place. Turn the engine off,
restart the engine, resume driving and set
the ICC system again.
If it is not possible to set the system or the
indicator stays on, it may indicate that the
ICC system is malfunctioning. Although
the vehicle is still driveable under normal
conditions, have the vehicle checked at anINFINITI retailer.
JVS0227X
Sensor maintenance
The sensor for the Intelligent Cruise Control
(ICC) system
*Ais located below the front
bumper.
To keep the ICC system operating properly,
be sure to observe the following:
. Always keep the sensor clean. Wipe
with a soft cloth carefully so as not to
damage the sensor.
. Do not strike or damage the areas
around the sensor. Do not touch or
remove the screw located on the
sensor. Doing so could cause failure
or malfunction. If the sensor is da-
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5-74Starting and driving
maged due to an accident, contact an
INFINITI retailer.
. Do not attach a sticker (including
transparent material) or install an
accessory near the sensor. This could
cause failure or malfunction.
CONVENTIONAL (fixed speed)
CRUISE CONTROL MODE
This mode allows driving at a speed
between 25 to 90 MPH (40 to 144 km/h)
without keeping your foot on the accel-
erator pedal.
WARNING
. In the conventional (fixed speed) cruise
control mode, a warning chime does not
sound to warn you if you are too close to
the vehicle ahead, as neither the pre-
sence of the vehicle ahead nor the
vehicle-to-vehicle distance is detected.
. Pay special attention to the distance
between your vehicle and the vehicle
ahead of you or a collision could occur.
. Always confirm the setting in the In-
telligent Cruise Control (ICC) system
display. .
Do not use the conventional (fixed
speed) cruise control mode when driving
under the following conditions.
—when it is not possible to keep the
vehicle at a set speed
—in heavy traffic or in traffic that
varies in speed
—on winding or hilly roads
—on slippery roads (rain, snow, ice,etc.)
—in very windy areas
Doing so could cause a loss of vehicle
control and result in an accident.SSD0968
Conventional (fixed speed) cruise
control switch
1. ACCELERATE/RESUME switch: Resumes set speed or increases speed
incrementally.
2. COAST/SET switch: Sets the desired cruise speed, reduces
speed incrementally.
3. CANCEL switch: Deactivates the system without erasing
the set speed.
4. MAIN switch:
Master switch to activate the system.

5-78Starting and driving
The Distance Control Assist (DCA) system
brakes and moves the accelerator pedal
upward according to the distance from and
the relative speed of the vehicle ahead to
help assist the driver to maintain a
following distance.
WARNING
.Always drive carefully and attentively
when using the Distance Control Assist
system. Read and understand the Own-
er’s Manual thoroughly before using the
DCA system. To avoid serious injury or
death, do not rely on the system to
prevent accidents or to control the
vehicle’s speed in emergency situations.
Do not use the Distance Control Assist
system except in appropriate road and
traffic conditions.
. If the vehicle ahead comes to a stop, the
vehicle decelerates to a standstill within
the limitations of the system. The
system will cancel once it judges that
the vehicle has come to a standstill with
a warning chime. To prevent the vehicle
from moving, the driver must depress
the brake pedal. .
The DCA system will not apply brake
control while the driver’s foot is on the
accelerator pedal.
JVS0227X
PRECAUTIONS ON DISTANCE CON-
TROL ASSIST SYSTEM
The system is intended to assist the driver
to keep a following distance from the
vehicle ahead traveling in the same lane
and direction.
If the distance sensor
*Adetects a slower
moving vehicle ahead, the system will
reduce the vehicle speed to help assist
the driver to maintain a following distance.
The system automatically controls the
throttle and applies the brakes (up to
25% of vehicle braking power) if neces-
sary.
DISTANCE CONTROL ASSIST (DCA) SYSTEM
(if so equipped)

The detection range of the sensor is
approximately 390 ft (120 m) ahead.
WARNING
.This system is only an aid to assist the
driver and is not a collision warning or
avoidance device. It is the driver’ s
responsibility to stay alert, drive safely
and be in control of the vehicle at all
times.
. This system will not adapt automatically
to road conditions. Do not use the
system on roads with sharp curves, or
on icy roads, in heavy rain or in fog.
The distance sensor will not detect the
following objects:
.Stationary and slow moving vehicles
. Pedestrians or objects in the roadway
. Oncoming vehicles in the same lane
. Motorcycles traveling offset in the travel
lane
WARNING
. As there is a performance limit to the
distance control function, never rely
solely on the Distance Control Assist
system. This system does not correct
careless, inattentive or absent-minded
driving, or overcome poor visibility in
rain, fog, or other bad weather. Decele-
rate the vehicle speed by depressing the
brake pedal, depending on the distance
to the vehicle ahead and the surround-
ing circumstances in order to maintain a
safe distance between vehicles.
. The system may not function properly
under the following conditions. To avoid
accidents, never use the Distance Con-
trol Assist system under the following
conditions:
—On roads with sharp curves
—On slippery road surfaces such as
on ice or snow, etc.
—On off-road surfaces such as onsand or rock, etc.
—During bad weather (rain, fog, snow,etc.)
—When strong light (for example, atsunrise or sunset) is directly shining
on the front of the vehicle
—When rain, snow or dirt adhere tothe system sensor
—On steep downhill roads (frequent
braking may result in overheating
the brakes)
—On repeated uphill and downhillroads
—When towing a trailer or othervehicle
. In some road or traffic conditions, a
vehicle or object can unexpectedly come
into the sensor detection zone and cause
automatic braking. You may need to
control the distance from other vehicles
using the accelerator pedal. Always stay
alert and avoid using the DCA system
when it is not recommended in this
section.
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5-80Starting and driving
JVS0227X
DISTANCE CONTROL ASSIST OP-
ERATION
Always pay attention to the operation of
the vehicle and be ready to manually
decelerate to maintain the proper following
distance. The Distance Control Assist (DCA)
system may not be able to decelerate the
vehicle under some circumstances.
The DCA system uses a sensor
*Alocated
on the front of the vehicle to detect
vehicles traveling ahead. The sensor gen-
erally detects the signals returned from the
reflectors on a vehicle ahead. Therefore, if
the sensor cannot detect the reflector on the vehicle ahead, the DCA system may not
operate.
The following are some conditions in which
the sensor cannot detect the signals:
.
When the reflector of the vehicle ahead
is positioned high on the vehicle
(trailer, etc.)
. When the reflector on the vehicle ahead
is missing, damaged or covered
. When the reflector of the vehicle ahead
is covered with dirt, snow and road
spray
. When the snow or road spray from
traveling vehicles reduces the sensor’s
visibility
. When dense exhaust or other smoke
(black smoke) from vehicles reduces
the sensor’s visibility
. When excessively heavy baggage is
loaded in the rear seat or the luggage
room of your vehicle
The DCA system is designed to automati-
cally check the sensor’s operation. When
the sensor is covered with dirt or is
obstructed, the system will automatically
be canceled. If the sensor is covered with
ice, a transparent or translucent vinyl bag,
etc., the DCA system may not detect them. In these instances, the Distance Control
Assist (DCA) system may not be able to
decelerate the vehicle properly. Be sure to
check and clean the sensor regularly.
The DCA system is designed to help assist
the driver to maintain a following distance
from the vehicle ahead. The system will
decelerate as necessary and if the vehicle
ahead comes to a stop, the vehicle
decelerates to a standstill. However, the
DCA system can only apply up to 25% of
the vehicles total braking power. If a
vehicle moves into the traveling lane ahead
or if a vehicle traveling ahead rapidly
decelerates, the distance between vehicles
may become closer because the DCA
system cannot decelerate the vehicle
quickly enough. If this occurs, the DCA
system will sound a warning chime and
blink the system display to notify the driver
to take necessary action.
See
“Approach warning” later in this
section.
This system only brakes and moves the
accelerator pedal upward to help assist the
driver to maintain a following distance
from the vehicle ahead. Acceleration
should be operated by the driver.

The DCA system does not control vehicle
speed or warn you when you approach
stationary and slow moving vehicles. You
must pay attention to vehicle operation to
maintain proper distance from vehicles
ahead.
SSD0252
The detection zone of the sensor is limited.
A vehicle ahead must be in the detection
zone for the system to operate.
A vehicle ahead may move outside of the
detection zone due to its position within
the same lane of travel. Motorcycles may
not be detected in the same lane ahead if
they are traveling offset from the centerline
of the lane. A vehicle that is entering the
lane ahead may not be detected until the
vehicle has completely moved into the
lane.If this occurs, the system may warn
you by blinking the system indicator and
sounding the chime. The driver may have
to manually control the proper distance away from vehicle traveling ahead.
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5-82Starting and driving
SSD0253
When driving on some roads, such as
winding, hilly, curved, narrow roads, or
roads which are under construction, the
sensor may detect vehicles in a different
lane, or may temporarily not detect a
vehicle traveling ahead. This may cause
the system to work inappropriately.
The detection of vehicles may also be
affected by vehicle operation (steering
maneuver or traveling position in the lane,
etc.) or vehicle condition.If this occurs, the
system may warn you by blinking the
system indicator and sounding the chime
unexpectedly. You will have to manually
control the proper distance away from the vehicle traveling ahead.
SSD0994
Distance Control Assist system
display and indicators
The display is located between the speed-
ometer and tachometer.
1. Distance Control Assist (DCA) system
switch indicator:
Indicates that the dynamic driver assis-
tance switch is ON.
2. Vehicle ahead detection indicator: Indicates whether it detects a vehicle in
front of you.
3. Distance Control Assist system warning light (orange):

5-88Starting and driving
SSD0284A
NOTE:
The approach warning chime may sound
and the system display may blink when
the sensor detects some reflectors
*A
which are fitted on vehicles in other lanes
or on the side of the road. This may cause
the DCA system to operate inappropriately.
The sensor may detect these reflectors
when the vehicle is driven on winding
roads, hilly roads or when entering or
exiting a curve. The sensor may also detect
reflectors on narrow roads or in road
construction zones. In these cases you
will have to manually control the proper
distance ahead of your vehicle.Also, the sensor sensitivity can be affected
by vehicle operation (steering maneuver or
driving position in the lane) or traffic or
vehicle condition (for example, if a vehicle
is being driven with some damage).
SSD0996
Automatic cancellation
Condition A:
Under the following conditions, the Dis-
tance Control Assist system is automati-
cally canceled. The chime will sound and
the Distance Control Assist (DCA) system
switch indicator will blink. The system will
not be able to be set.
.
When the VDC system is turned off
. When the VDC or ABS (including the
traction control system) operates
. When the SNOW mode switch is turned
on.