2021 INFINITI QX50 sensor

•As there is a performance limit to the
distance control function, never rely
solely on the DCA system. This system
does not correct careless, inattentive or
absent-minded driving, or overcome
poor visibility in rain, fog, or other bad
weather. Decelerate the vehicle speed by
depressing the brake pedal, depending
on the distance to the vehicle ahead and
the surrounding circumstances in order
to maintain a safe distance between
vehicles.
• Always pay attention to the operation of
the vehicle and be ready to manually de-
celerate to maintain the proper follow-
ing distance. The DCA system may not be
able to decelerate the vehicle under some
circumstances.
• This system only brakes and moves the
accelerator pedal upward to help assist
the driver to maintain a following dis-
tance from the vehicle ahead. Accelera-
tion should be operated by the driver.
• The DCA system does not control the ve-
hicle speed or warn you when you ap-
proach stationary and slow moving ve-
hicles. You must pay attention to vehicle
operation to maintain proper distance
from vehicles ahead. •
The DCA system automatically deceler-
ates your vehicle to help assist the driver
to maintain a following distance from
the vehicle ahead. Manually brake when
deceleration is required to maintain a
safe distance upon sudden braking by
the vehicle ahead or when a vehicle sud-
denly appears in front of you. Always
stay alert when using the DCA system.
• If the vehicle ahead comes to a stop, the
vehicle decelerates to a standstill within
the limitations of the system. The system
will cancel with a warning chime once it
judges that the vehicle has come to a
standstill. To prevent the vehicle from
moving, the driver must depress the
brake pedal.
The DCA system is intended to assist the
driver in keeping a following distance from
the vehicle ahead traveling in the same lane
and direction.
If the radar sensor detects a slower moving
vehicle ahead, the system will reduce the ve-
hicle speed to help assist the driver to main-
tain a following distance.
The system automatically controls the
throttle and applies the brakes (up to ap-
proximately 40% of vehicle braking power) if
necessary. The detection range of the sensor is approxi-
mately 650 ft (200m) ahead.
Starting and driving5-107

• When the driver’s foot is on the brakepedal, neither the brake control nor the
alert by the system operates.
• When the ICC system is set, the DCA sys- tem will be canceled.
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 indicatorblinks.
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.
NOTE:
The approach warning chime may sound and
the system display may blink when the radar
sensor detects objects on the side of the
road. This may cause the DCA system to de-
celerate or accelerate the vehicle. The radar
sensor may detect these objects when the
vehicle is driven on winding roads, narrow
roads, hilly roads or when entering or exiting
a curve. In these cases you will have to manu-
ally control the proper distance 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).
5-110Starting and driving

•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 where the traffic is heavy or
there are sharp curves
– On slippery road surfaces such as on
ice or snow, etc.
– On off-road surfaces such as on sand
or rock, 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
– When traffic conditions make it diffi-
cult to keep a proper distance be-
tween vehicles because of frequent
acceleration or deceleration
– When towing a trailer or other vehicle
– Interference by other radar sources •
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
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.
The radar 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
The following are some conditions in which
the sensor cannot detect the signals:
• When the snow or road spray from travel- ing vehicles reduces the sensor’s visibility
• When excessively heavy baggage is loaded in the rear seat or the luggage room of your
vehicle
Starting and driving5-113

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 oc-
curs, the system may warn you by blinking
the system indicator and sounding the chime. The driver may have to manually con-
trol the proper distance away from the ve-
hicle traveling ahead.
SSD0252
DCA Detection Zone
5-114Starting and driving

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 indica-
tor and sounding the chime unexpectedly.
You will have to manually control the proper
distance away from the vehicle traveling
ahead.SYSTEM TEMPORARILY
UNAVAILABLE
Condition A:
Under the following conditions, the DCA sys-
tem is automatically canceled. The chime will
sound and the DCA system switch indicator
will blink. The system will not be able to be
set.
• When the VDC system is off (To use the DCA system, turn on the VDC, then push
the ProPILOT Assist switch on the steering
wheel.)
SSD0253
DCA Detection Zones On Winding Roads
LSD3203
Starting and driving5-115

For additional information about the VDC
system, see “Vehicle Dynamic Control
(VDC) system” (P. 5-154).
• When ABS or VDC (including the TCS) is operating
• When the radar signal is temporarily interrupted
Action to take:
When the conditions listed above are no lon-
ger present, turn the system off with ProPI-
LOT Assist switch on the steering wheel.
Turn the DCA system back on to use the
system.
Condition B:
When the radar sensor area is covered with
dirt or is obstructed, making it impossible to
detect a vehicle ahead, the DCA system is
automatically canceled.
The chime sounds and the DCA system
warning light (orange) will come on and the
“Unavailable: Front Radar Blocked” warning
will appear.
Action to take:
If the warning light comes on, park the vehicle
in a safe place, press the park button to place
the vehicle in the P (Park) position and turn
the engine off. When the radar signal is tem-porarily interrupted, clean the sensor area
and restart the engine. If the “Unavailable:
Front Radar Blocked” warning continues to
be displayed, have the DCA system checked.
It is recommended you visit and INFINITI
retailer for this service.
When driving on roads with limited road
structures or buildings (for example, long
bridges, deserts, snow fields, driving next to
long walls) the system may illuminate the sys-
tem warning light (orange) and display the
“Unavailable Front Radar Blocked” message.
Action to take:
When the above conditions no longer exist,
the DCA system will resume automatically.
Condition C:
When the DCA system is not operating prop-
erly, the chime sounds, the DCA system
warning light (orange) and the system “Mal-
function” warning message will appear in the
vehicle information display.
Action to take:
If the DCA system warning light (orange) and
the warning message appear, stop the ve-
hicle in a safe place and place the vehicle in
the P (Park) position. Turn the engine off,
restart the engine, and turn on the DCA sys-
tem again.
LSD2992
5-116Starting and driving

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
bumper.
For additional information, see “Intelligent
Cruise Control (ICC) (for vehicles with ProPI-
LOT Assist)” (P. 5-87).
For USA/Canada
Model: ARS4–A
IC: 4135A-ARS4A
FCC ID: OAYARS4A
This device complies with Part 15 of the FCC
Rules and with Industry Canada licence-
exempt RSS standard(s). Operation is subject
to the following two conditions: (1) This de-
vice may not cause interference, and (2) this
device must accept any interference, includ-
ing interference that may cause undesired
operation of the device.Le présent appareil est conforme aux CNR
d'Industrie Canada applicables aux appareils
radio exempts de licence. L'exploitation est
autorisée aux deux conditions suivantes: (1)
L'appareil ne doit pas produire de brouillage,
et (2) l'utilisateur de l'appareil doit accepter
tout brouillage radioélectrique subi, même si
le brouillage est susceptible d'en comprom-
ettre le fonctionnement.
Radio Frequency Radiation Exposure
Information:
This equipment complies with FCC and IC
radiation exposure limits set forth for an un-
controlled environment.
This equipment should be installed and oper-
ated with minimum distance of 30 cm be-
tween the radiator and your body.
This transmitter must not be co-located or
operating in conjunction with any other an-
tenna or transmitter.
Cet équipment est conforme aux limites
d’exposition aux rayonnements IC établies
pour un environnement non contrôlé. Cet
équipment doit étre installé et utilisé avec un
minimum de 30 cm de distance entre la
source de rayonnement et votre corps.
FCC Notice
Changes or modifications not expressly ap-
proved by the party responsible for compli-
ance could void the user’s authority to oper-
ate the equipment.
Starting and driving5-117

WARNING
Failure to follow the warnings and instruc-
tions for proper use of the RAB system
could result in serious injury or death.
• The RAB system is a supplemental aid to
the driver. It is not a replacement for
proper driving procedures. Always use
the side and rear mirrors and turn and
look in the direction you will move before
and while backing up. Never rely solely
on the RAB system. It is the driver’s re-
sponsibility to stay alert, drive safely,
and be in control of the vehicle at all
times.
• Inclement weather or ultrasonic sources
such as an automatic car wash, a truck’s
compressed-air brakes or a pneumatic
drill may affect the function of the sys-
tem; this may include reduced perfor-
mance or a false activation.
• There is a limitation to the RAB system
capability. The RAB system is not effec-
tive in all situations.
The RAB system can assist the driver when
the vehicle is backing up and approaching
objects directly behind the vehicle. The RAB system detects obstacles behind
the vehicle using the parking sensors
O1lo-
cated on the rear bumper.
NOTE:
You can temporarily cancel the sonar func-
tion in the vehicle, but the RAB system will
continue to operate. For additional informa-
tion, see “Front and rear sonar system”
(P. 5-160).
LSD3559
REAR AUTOMATIC BRAKING (RAB)
5-118Starting and driving