2021 INFINITI QX50 sensor

•When the vehicle approaches an ob-
stacle while the accelerator or brake
pedal is depressed, the function may not
operate or the start of operation may be
delayed. The RAB system may not oper-
ate or may not perform sufficiently due
to vehicle conditions, driving conditions,
the traffic environment, the weather,
road surface conditions, etc. Do not wait
for the system to operate. Operate the
brake pedal by yourself as soon as
necessary.
• If it is necessary to override RAB opera-
tion, strongly press the accelerator
pedal.
• Always check your surroundings and
turn to check what is behind you before
and while backing up. The RAB system
detects stationary objects behind the
vehicle. The RAB system does not detect
the following objects:
– Moving objects
– Low objects
– Narrow objects
– Wedge-shaped objects
– Objects close to the bumper (less than
approximately 1 ft [30 cm])
– Objects that suddenly appear –
Thin objects such as rope, wire, chain,
etc.
• The RAB system may not operate for the
following obstacles:
– Obstacles located high off the ground
– Obstacles in a position offset from
your vehicle
– Obstacles, such as spongy materials
or snow, that have soft outer sur-
faces and can easily absorb a sound
wave
• The RAB system may not operate in the
following conditions:
– There is rain, snow, ice, dirt, etc., at-
tached to the sonar sensors.
– A loud sound is heard in the area
around the vehicle.
– The surface of the obstacle is diago-
nal to the rear of the vehicle.
• The RAB system may unintentionally op-
erate in the following conditions:
– There is overgrown grass in the area
around the vehicle.
– There is a structure (e.g., a wall, toll
gate equipment, a narrow tunnel, a
parking lot gate) near the side of the
vehicle. –
There are bumps, protrusions, or
manhole covers on the road surface.
– The vehicle drives through a draped
flag or a curtain.
– There is an accumulation of snow or
ice behind the vehicle.
– An ultrasonic wave source, such as
another vehicle’s sonar, is near the
vehicle.
• Once the automatic brake control oper-
ates, it does not operate again if the ve-
hicle approaches the same obstacle.
• The automatic brake control can only
operate for a short period of time. There-
fore, the driver must depress the brake
pedal.
• In the following situations, the RAB sys-
tem may not operate properly or may not
function sufficiently:
– The vehicle is driven in bad weather
(rain, fog, snow, etc.).
– The vehicle is driven on a steep hill.
– The vehicle’s posture is changed (e.g.,
when driving over a bump).
– The vehicle is driven on a slippery
road.
– The vehicle is turned sharply by turn-
ing the steering wheel fully.
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–Snow chains are used.
– Wheels or tires other than INFINITI
recommended are used.
– The brakes are cold at low ambient
temperatures or immediately after
driving has started.
– The braking force becomes poor due
to wet brakes after driving through a
puddle or washing the vehicle.
• Turn the RAB system off in the following
conditions to prevent the occurrence of
an unexpected accident resulting from
sudden system operation:
– The vehicle is towed.
– The vehicle is carried on a flatbed
truck.
– The vehicle is on the chassis
dynamometer.
– The vehicle drives on an uneven road
surface.
– Suspension parts other than those
designated as Genuine INFINITI
parts are used. (If the vehicle height
or the vehicle body inclination is
changed, the system may not detect
an obstacle correctly.)
– The vehicle is towing an object (if so
equipped). •
Excessive noise (e.g., audio system vol-
ume, an open vehicle window) will inter-
fere with the chime sound, and it may not
be heard.
SYSTEM MALFUNCTION
If the RAB system malfunctions, it will be
turned off automatically, the RAB system
warning light will illuminate, and the “System
fault” warning message will appear in the
vehicle information display.
Action to take
If the warning light illuminates, park the ve-
hicle in a safe location, turn the engine off,
and restart the engine. If the warning light
continues to illuminate, have the RAB system
checked. It is recommended that you visit an
INFINITI retailer for this service.
NOTE:
If the RAB system cannot be operated tem-
porarily, the RAB system warning light
blinks.
SYSTEM MAINTENANCE
Observe the following items to ensure proper
operation of the system:
• Always keep the parking sensors
O1clean.
• If the parking sensors are dirty, wipe them off with a soft cloth while being careful to
not damage them.
• Do not subject the area around the parking sensors
O1to strong impact. Also, do not
remove or disassemble the parking sensors.
If the parking sensors and peripheral areas
are deformed in an accident, etc., have the
sensors checked. It is recommended that
you visit an INFINITI retailer for this service.
LSD3559
5-122Starting and driving

• Do not install any stickers (including trans-parent stickers) or accessories on the park-
ing sensors
O1and their surrounding areas.
This may cause a malfunction or improper
operation.
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 ahead in
the traveling lane. The FEB with Pedestrian Detection system
uses a radar sensor
OAlocated on the front of
the vehicle to measure the distance to the
vehicle ahead in the same lane. For pedestri-
ans, the FEB with Pedestrian Detection sys-
tem uses a camera
OBinstalled behind the
windshield in addition to the radar sensor.
LSD2954
FORWARD EMERGENCY BRAKING
(FEB) WITH PEDESTRIAN
DETECTION SYSTEM
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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 accor-
dance 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 vehi-
cle’s path, the FEB with Pedestrian
Detection system will not function
when the vehicle is driven at speeds
over approximately 50 mph (80
km/h).
– For pedestrian detection, the FEB
with Pedestrian Detection system
will not function when the vehicle is
driven at speeds over approximately
37 mph (60 km/h) or below approxi-
mately 6 mph (10km/h).
• 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 Pedes-
trian Detection system will not issue the
first warning.
• 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
properly or detect a vehicle ahead in the
following conditions:
– Poor visibility (conditions such as
rain, snow, fog, dust storms, sand-
storms, 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.
– The camera area of the windshield is
fogged up, or covered with dirt, wa-
ter 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 pedes-
trian to be cast in a shadow, making it
difficult 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.)
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–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 sensor’s (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.
5-128Starting 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 operating (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.
SSD0253
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SYSTEM TEMPORARILY
UNAVAILABLE
Condition A:
In the following conditions, the FEB with Pe-
destrian Detection system warning light
blinks and the system will be turned off
automatically.
• The radar sensor picks up interference fromanother radar source.
• The camera area of the windshield is misted or frozen.
• Strong light is shining from the front.
• The cabin temperature is over approxi- mately 104°F (40°C) in direct sunlight.
• The camera area of the windshield glass is continuously covered with dirt, etc.
Action to take
When the above conditions no longer exist,
the FEB with Pedestrian Detection system
will resume automatically.
NOTE:
When the inside of the windshield or camera
area is misted or frozen, it will take a period
of time to remove it after A/C turns ON. If
dirt appears on this area have it checked. It is
recommended that you visit an INFINITI re-
tailer for this service.
LSD3920
5-130Starting and driving

Condition B:
In the following conditions, the FEB with Pe-
destrian Detection system warning light will
illuminate, the system will be turned off au-
tomatically and the “Unavailable: Front Radar
Blocked” warning message will appear in the
vehicle information display.
• The sensor area of the front bumper iscovered with dirt or is obstructed.
Action to take
If the warning light (orange) comes on, stop
the vehicle in a safe place, place the shift lever
in the P (Park) position and turn the engine
off. Clean the radar sensor area of the front
bumper or the camera area of the windshield
with a soft cloth, and restart the engine. If the
warning light continues to illuminate, have
the FEB with Pedestrian Detection system
checked. It is recommended that you visit an
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).
Action to take
When the above conditions no longer exist,
the FEB with pedestrian detection system
will resume automatically.NOTE:
If the FEB with Pedestrian Detection system
stops working, the PFCW system (if so
equipped) will also stop working.
SYSTEM MALFUNCTION
If the FEB with Pedestrian Detection system
malfunctions, it will be turned off automati-
cally, a chime will sound, the FEB with Pedes-
trian Detection system warning light (orange)
will illuminate and the warning message
[Malfunction] will appear in the vehicle infor-
mation display.
Action to take
If the warning light (orange) comes on, stop
the vehicle in a safe location, turn the engine
off and restart the engine. If the warning light
continues to illuminate, have the FEB with
Pedestrian Detection system checked. It is
recommended that you visit an INFINITI re-
tailer for this service.
NOTE:
If the FEB with Pedestrian Detection system
stops working, the PFCW system (if so
equipped) will also stop working.
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