sensor INFINITI QX60 2018 Repair Manual

The DCA system brakes and moves the ac-
celerator pedal upward according to the dis-
tance from and the relative speed of the ve-
hicle ahead to help assist the driver to
maintain a following distance.
DCA SYSTEM OPERATION
Always pay attention to the operation of the
vehicle and be ready to manually decelerate
to maintain the proper following distance.
The DCA system may not be able to deceler-
ate the vehicle under some circumstances.
The DCA system uses a sensor
Alocated
behind the front bumper of the vehicle to
detect vehicles traveling ahead. The sensor
generally detects the signals returned from
the vehicle ahead. Therefore, if the sensor
cannot detect the reflection from the vehicle
ahead, the DCA system may not operate. The system is intended to assist the driver to
keep a following distance from the vehicle
ahead traveling in the same lane and direc-
tion.
The distance sensor is located behind the
front bumper
A. If the distance sensorA
detects a slower moving vehicle ahead, the
system will reduce the vehicle speed to help
assist the driver to maintain a following dis-
tance.
The system automatically controls the
throttle and applies the brakes (up to 40% of
vehicle braking power) if necessary.
The detection range of the sensor is approxi-
mately 150 m (490 ft) ahead.
The distance sensor will not detect the fol-
lowing objects:
∙ Stationary and slow moving vehicles
∙ Pedestrians or objects in the roadway
∙ Oncoming vehicles in the same lane
LSD2702
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Setting DCA system to ON/OFF:
The DCA can be turned on/off in the vehicle
information display using the buttons on the
steering wheel.1. Press the
button until “Settings”
displays in the vehicle information dis-
play. Use the
button to select
“Driver Assistance.” Then press the EN-
TER button.
2. Select “Driving Aids,” and press the EN- TER button.
3. Select “Forward,” and press the ENTER button.
4. To turn on the “Assistance (DCA)” check the box using the ENTER button.
If the LDP, BSI and DCA systems are set to
off in the vehicle information display and the
dynamic driver assistance switch is pushed,
the LDW ON indicator light, BSI ON indicator
light, and the DCA system switch indicator
light will blink for approximately 2 seconds.
For additional information on LDP and BSI,
refer to “Lane Departure Prevention (LDP)”
and “Blind Spot Intervention® (BSI)” in this
section.
DCA SYSTEM LIMITATIONS
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 re-
sponsibility to stay alert, drive safely and
be in control of the vehicle at all times.
∙ This system will not adapt automatically to road conditions.
∙ As there is a performance limit to the dis- tance control function, never rely solely
on the DCA system. This system does not
correct careless, inattentive or absent-
minded driving, or overcome poor visibil-
ity in rain, fog, or other bad weather. De-
celerate the vehicle speed by depressing
the brake pedal, depending on the dis-
tance to the vehicle ahead and the sur-
rounding circumstances in order to main-
tain a safe distance between vehicles.
∙ The system may not detect the vehicle in front of you in certain road or weather
conditions. To avoid accidents, never use
the DCA system under the following
conditions:
– On roads with sharp curves – On slippery road surfaces such as on
ice or snow, etc.
– During bad weather (rain, fog, snow, etc.)
– When rain, snow or dirt adhere to the sensor area of the front bumper
– On steep downhill roads (frequent braking may result in overheating the
brakes)
– On repeated uphill and downhill roads
∙ Do not use the DCA system if you are towing a trailer. The system may not de-
tect a vehicle ahead.
∙ In some road or traffic conditions, a ve- hicle or object can unexpectedly come
into the sensor detection zone and cause
automatic braking. You may need to con-
trol the distance from other vehicles us-
ing the accelerator pedal. Always stay
alert and avoid using the DCA system
where not recommended in this warning
section.
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The following are some conditions in which
the sensor cannot detect the signals:∙ When the reflector of the vehicle ahead is covered with dirt, snow and road spray
∙ When dense exhaust or other smoke (black smoke) from vehicles reduces the
sensor’s detection
∙ When excessively heavy baggage is loaded in the rear seat or the luggage
room of your vehicle
The DCA system is designed to automatically
check the sensor’s operation. When the front
bumper area around the distance sensor is
covered with dirt or is obstructed, the system
will automatically cancel. If the front bumper
area of the distance sensor is covered with
ice, a transparent or translucent vinyl bag,
etc., the DCA system may not detect them. In
these instances, the vehicle-to-vehicle dis-
tance control mode may not cancel and may
not be able to maintain the selected following
distance from the vehicle ahead. Be sure to
check and clean the front bumper area
around the distance 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 stand-
still. However, the DCA system can only ap-
ply up to 40% of the vehicle’s total braking
power. If a vehicle moves into the traveling
lane ahead or if a vehicle traveling ahead
rapidly decelerates, the distance between ve-
hicles 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.
For additional information, refer to “Ap-
proach warning” in this section.
This system only brakes and moves the accel-
erator pedal upward to help assist the driver
to maintain a following distance from the
vehicle ahead. Acceleration should be oper-
ated by the driver.
The DCA system does not control vehicle
speed or warn you when you approach sta-
tionary and slow moving vehicles. You must
pay attention to vehicle operation to main-
tain proper distance from vehicles ahead.
Starting and driving5-105

DCA DRIVING SITUATIONS
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 center line 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 the
vehicle traveling ahead.
DCA Detection Zone
SSD0252
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When driving on some roads, such as wind-
ing, 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 af-
fected by vehicle operation (steering maneu-
ver 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.
Approach warning
If your vehicle comes closer to the vehicle
ahead due to rapid deceleration of that ve-
hicle or if another vehicle cuts in, the system
warns the driver with the chime and DCA
system display. Decelerate by depressing the
brake pedal to maintain a safe vehicle dis-
tance if:
∙ The chime sounds.
∙ The vehicle ahead detection indicator blinks.
The warning chime may not sound in some
cases when there is a short distance between
vehicles. Some examples are: ∙ When the vehicles are traveling at the same speed and the distance between
vehicles is not changing
∙ When the vehicle ahead is traveling faster and the distance between vehicles
is increasing
∙ When a vehicle cuts in near your vehicle
The warning chime will not sound when your
vehicle approaches vehicles that are parked
or moving slowly.
DCA Detection Zones On Winding Roads
SSD0253
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NOTE:
The approach warning chime may sound and
the system display may blink when ICC sen-
sor detects vehicles in other lanes
Aor ob-
jects on the side of the road
A. This may
cause the DCA system to operate inappro-
priately. The ICC sensor may detect these
objects when the vehicle is driven on winding
roads, narrow roads, hilly roads or when en-
tering or exiting a curve. In these cases you
will have to manually control the proper dis-
tance ahead of your vehicle. Also, the sensor sensitivity can be affected by
vehicle operation (steering maneuver or driv-
ing position in the lane) or traffic or vehicle
condition (for example, if a vehicle is being
driven with some damage).
SYSTEM TEMPORARILY
UNAVAILABLE
Under the following conditions, the DCA sys-
tem will not operate and the DCA cancella-
tion message will pop up:
∙ When the SNOW mode switch is se- lected by using the INFINITI Drive Mode
Selector (To use the DCA system, turn off
the SNOW mode, then turn on the dy-
namic driver assistance switch.)
For additional information about the
SNOW mode switch, refer to “Snow
mode” in this section.
SSD0284ALSD2080
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Condition B:
When the sensor area of the front bumper is
dirty, making it impossible to detect a vehicle
ahead, the DCA system is automatically can-
celed.
The chime sounds and the system warning
light (orange) will come on and the “Unavail-
able: Front Radar Obstruction” 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 area of the bumper and then perform
the settings again.Condition C:
When the DCA system is not operating prop-
erly, the chime sounds and the system warn-
ing light (“DCA” 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, and turn on the DCA system
again.If it is not possible to set the system or the
indicator stays on, it may indicate that the
system is malfunctioning. Although the ve-
hicle is still drivable under normal conditions,
have the vehicle checked. It is recommended
that you visit an INFINITI retailer for this
service.
SYSTEM MAINTENANCE
The sensor for the DCA system is common
with ICC and is located behind the front bum-
per.
For additional information, refer to “Intelli-
gent Cruise Control (ICC)” in this section.
DCA warning light (orange)
LSD2081
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WARNING
Failure to follow the warnings and instruc-
tions for proper use of the FEB with Pedes-
trian Detection system could result in seri-
ous injury or death.
∙ The FEB with Pedestrian Detection sys-tem is a supplemental aid to the driver. It
is not a replacement for the driver’s at-
tention to traffic conditions or responsi-
bility to drive safely. It cannot prevent
accidents due to carelessness or danger-
ous driving techniques.
∙ The FEB with Pedestrian Detection sys- tem does not function in all driving, traf-
fic, weather and road conditions.
The FEB with Pedestrian Detection system
can assist the driver when there is a risk of a
forward collision with the vehicle ahead in the
traveling lane or with a pedestrian. The FEB with Pedestrian Detection system
uses a radar sensor
Alocated behind the
lower grille of the front bumper to measure
the distance to the vehicle ahead in the same
lane. For pedestrians, the FEB with Pedes-
trian Detection system uses a camera
Bin-
stalled behind the windshield in addition to
the radar sensor.
LSD2703
FORWARD EMERGENCY BRAKING
(FEB) WITH PEDESTRIAN
DETECTION SYSTEM (if so equipped)
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∙The PFCW system (if so equipped) is in-
tegrated into the FEB with Pedestrian
Detection system. There is not a sepa-
rate selection in the vehicle information
display for the PFCW system. When the
FEB with Pedestrian Detection is turned
off, the PFCW system is also turned off.
FEB WITH PEDESTRIAN
DETECTION SYSTEM
LIMITATIONS
WARNING
Listed below are the system limitations for
the FEB with Pedestrian Detection system.
Failure to operate the vehicle in accordance
with these system limitations could result
in serious injury or death.
∙ The FEB with Pedestrian Detection sys-
tem cannot detect all vehicles or pedes-
trians under all conditions.
∙ The radar sensor FEB with Pedestrian Detection system does not detect the
following objects:
– Small pedestrians (including small children), animals and cyclists. – Pedestrians in wheelchairs or using
mobile transport such as scooters,
child-operated toys, or skateboards.
– Pedestrians who are seated or other- wise not in a full upright standing or
walking position.
– Oncoming vehicles
– Crossing vehicles
– Obstacles on the roadside
∙ The FEB with Pedestrian Detection sys- tem has some performance limitations.
– If a stationary vehicle is in the vehicle’s path, the FEB with Pedestrian Detec-
tion system will not function when the
vehicle is driven at speeds over ap-
proximately 80 km/h (50 mph).
– For pedestrian detection, the FEB with Pedestrian Detection system will
not function when the vehicle is driven
at speeds over approximately
60 km/h (37 mph) or below approxi-
mately 10 km/h (6 mph).
∙ The FEB with Pedestrian Detection sys- tem will not function for pedestrians in
darkness or in tunnels, even if there is
street lighting in the area. ∙ For pedestrians, the FEB with Pedestrian
Detection system will not issue the first
warning and will not push the accelerator
pedal up.
∙ The FEB with Pedestrian Detection sys- tem may not function if the vehicle ahead
is narrow (for example, a motorcycle).
∙ The FEB with Pedestrian Detection sys- tem may not function if speed difference
between the two vehicles is too small.
∙ The radar sensor FEB with Pedestrian Detection system may not function prop-
erly or detect a vehicle ahead in the fol-
lowing conditions:
– Poor visibility (conditions such as rain, snow, fog, dust storms, sandstorms,
and road spray from other vehicles)
– Driving on a steep downhill slope or roads with sharp curves.
– Driving on a bumpy road surface, such as an uneven dirt road.
– If dirt, ice, snow or other material is covering the radar sensor area.
– Interference by other radar sources.
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– The camera area of windshield isfogged up, or covered with dirt, water
drops, ice, snow, etc.
– Strong light (for example, sunlight or high beams from oncoming vehicles)
enters the front camera. Strong light
causes the area around the pedestrian
to be cast in a shadow, making it diffi-
cult to see.
– A sudden change in brightness occurs. (For example, when the vehicle enters
or exits a tunnel or a shaded area or
lightning flashes.)
– The poor contrast of a person to the background, such as having clothing
color or pattern which is similar to the
background.
– The pedestrian’s profile is partially obscured or unidentifiable due to the
pedestrian transporting luggage,
wearing bulky or very loose-fitting
clothing or accessories.
∙ The system performance may degrade in the following conditions:
– The vehicle is driven on a slippery road.
– The vehicle is driven on a slope. – Excessively heavy baggage is loaded
in the rear seat or the trunk room of
your vehicle.
∙ The system is designed to automatically check the sensors’ (radar and camera)
functionality, within certain limitations.
The system may not detect blockage of
sensor areas covered by ice, snow or
stickers, for example. In these cases, the
system may not be able to warn the
driver properly. Be sure that you check,
clean and clear sensor areas regularly.
∙ In some road and traffic conditions, the FEB with Pedestrian Detection system
may unexpectedly apply partial braking.
When acceleration is necessary, depress
the accelerator pedal to override the
system.
∙ Excessive noise will interfere with the warning chime sound, and the chime may
not be heard.
Starting and driving5-117