sensor INFINITI QX50 2020 Service Manual

The BSI system uses radar sensors2in-
stalled near the rear bumper to detect other
vehicles in an adjacent lane. In addition to the
radar sensors, the BSI system uses a camera
1installed behind the windshield to monitor
the lane markers of your traveling lane.
The radar sensors can detect vehicles on ei-
ther side of your vehicle within the detection
zone shown as illustrated. This detection
zone starts from the outside mirror of your
vehicle and extends approximately 10 ft
(3.0 m) sideways.
LSD2924
Detection zone
SSD1030
Starting and driving5-55

1. Side indicator light
2. BSW indicator
3. Dynamic driver assistance switch (formodels without ProPILOT Assist)
4. ProPILOT Assist switch (for vehicles with ProPILOT Assist)
BSI SYSTEM OPERATION
The BSI system operates above approxi-
mately 37 mph (60 km/h).
If the radar sensors detect a vehicle in the
detection zone, the side indicator light
1
illuminates.
If the turn signal is then activated, the system
chimes (twice) and the side indicator light
flashes. The side indicator light continues to
flash until the detected vehicle leaves the
detection zone.
If the BSI system is on and your vehicle ap-
proaches a lane marker while another vehicle
is in the detection zone, the system chimes
(three times) and the side indicator light
flashes. The BSI system activates to help re-
turn the vehicle back to the center of the
driving lane. The BSI system operates regard-
less of turn signal usage.
LSD3611
5-56Starting and driving

BSI SYSTEM LIMITATIONS
WARNING
Listed below are the system limitations for
the BSI system. Failure to operate the ve-
hicle in accordance with these system limi-
tations could result in serious injury or
death.
∙ The BSI system cannot detect all vehiclesunder all conditions.
∙ The radar sensors may not be able to de- tect and activate BSI when certain ob-
jects are present such as:
– Pedestrians, bicycles, or animals.
– Vehicles such as motorcycles, low height vehicles, or high ground clear-
ance vehicles.
– Oncoming vehicles.
– Vehicles remaining in the detection zone when you accelerate from a stop.
For additional information, refer to
“BSI driving situations” in this section.
– A vehicle merging into an adjacent lane at a speed approximately the
same as your vehicle. For additional
information, refer to “BSI driving situ-
ations” in this section. – A vehicle approaching rapidly from
behind. For additional information,
refer to “BSI driving situations” in this
section.
– A vehicle which your vehicle overtakes rapidly. For additional information,
refer to “BSI driving situations” in this
section.
– A vehicle that passes through the de- tection zone quickly.
– When overtaking several vehicles in a row, the vehicles after the first vehicle
may not be detected if they are trav-
eling close together.
∙ The radar sensors’ detection zone is de- signed based on a standard lane width.
When driving in a wider lane, the radar
sensors may not detect vehicles in an ad-
jacent lane. When driving in a narrow
lane, the radar sensors may detect ve-
hicles driving two lanes away.
∙ The radar sensors are designed to ignore most stationary objects; however, ob-
jects such as guardrails, walls, foliage and
parked vehicles may occasionally be de-
tected. This is a normal driving condition. ∙ The following conditions may reduce the
ability of the radar to detect other
vehicles:
– Severe weather
– Road spray
– Ice/frost/dirt build-up on the vehicle
∙ Do not attach stickers (including trans- parent material), install accessories or
apply additional paint near the radar sen-
sors. These conditions may reduce the
ability of the radar to detect other
vehicles.
∙ The camera may not detect lane markers in the following situations and the BSI
system may not operate properly:
– On roads where there are multiple parallel lane markers; lane markers
that are faded or not painted clearly;
yellow painted lane markers; non-
standard lane markers; lane markers
covered with water, dirt, snow, etc.
– On roads where discontinued lane markers are still detectable.
– On roads where there are sharp curves.
Starting and driving5-59

Illustration 3: If the BSI system is on and your
vehicle is approaching a lane marker and a
vehicle is in the detection zone, the system
chimes a sound (three times), and the side
indicator light flashes. Then the BSI system
slightly applies the brakes on one side to help
return the vehicle back to the center of the
driving lane.NOTE:
Illustration 4: If you accelerate from a stop
with a vehicle in the detection zone, the
other vehicle may not be detected.Overtaking another vehicle
Illustration 5: The side indicator light illumi-
nates if you overtake a vehicle and that ve-
hicle stays in the detection zone for approxi-
mately 3 seconds.
The radar sensors may not detect slower
moving vehicles if they are passed quickly.
Illustration 3 – Approaching from behind
LSD2048
Illustration 4 – Accelerate from a stop
SSD1032
Illustration 5 – Overtaking another vehicle
SSD1033
5-62Starting and driving

NOTE:
Illustration 8: When overtaking several ve-
hicles in a row, the vehicles after the first
vehicle may not be detected if they are trav-
eling close together.Entering from the side
Illustration 9: The side indicator light illumi-
nates if a vehicle enters the detection zone
from either side.
NOTE:
The radar sensors may not detect a vehicle
which is traveling at about the same speed as
your vehicle when it enters the detection
zone.
Illustration 8 – Overtaking several vehicles
SSD1036
Illustration 9 – Entering from the side
LSD2050
5-64Starting and driving

–When steering quickly.
– When the ICC, DCA, PFCW or FEB
with Pedestrian Detection warnings
sound.
– When the hazard warning flashers
are operated.
– When driving on a curve at a high
speed.
SYSTEM TEMPORARILY
UNAVAILABLE
When any of the following messages appear
on the vehicle information display, a chime
will sound and the BSI system will be turned
off automatically.
∙ “Not Available Poor Road Conditions”: When the VDC system (except traction
control system function) or ABS oper-
ates.
∙ “Currently Not Available”: When the VDC system is turned off.
∙ “Not Available: High Camera Temp”: When the camera detects that the inte-
rior temperature is high (over approxi-
mately 104°F [40°C]).
∙ “Unavailable: Side Radar Obstruction”: When side radar blockage is detected. Turn off the BSI system and turn it on again
when the above conditions no longer exist.
SYSTEM MALFUNCTION
When the BSI system malfunctions, it will be
turned off automatically, a chime will sound
and the warning message will appear in the
vehicle information display.
Action to take:
Stop the vehicle in a safe location, place the
vehicle in the P (Park) position, turn the en-
gine off and restart the engine. If the warning
light (orange) continues to illuminate, have
the system checked. It is recommended that
you visit an INFINITI retailer for this service.
SYSTEM MAINTENANCE
The lane camera unit1for the BSI system is
located above the inside mirror. The two ra-
dar sensors
2for the BSI system are located
near the rear bumper. To keep the proper
operation of the BSI system and prevent a
system malfunction, be sure to observe the
following:
∙ Always keep the windshield and the area near the radar sensors clean.
LSD2924
5-66Starting and driving

∙The radar sensors may be blocked by tem-
porary ambient conditions such as splashing
water, mist or fog. The blocked condition
may also be caused by objects such as ice,
frost or dirt obstructing the radar sensors.
Check for and remove objects obstructing
the area around the radar sensors.
∙ Do not attach stickers (including trans-parent material), install accessories or
apply additional paint near the camera
unit or radar sensors.
∙ Do not place reflective materials, such as white paper or a mirror, on the instrument
panel. The reflection of sunlight may ad-
versely affect the camera unit’s capability
of detecting the lane markers.
∙ Do not strike or damage the area around the radar sensors. Do not touch the cam-
era lens or remove the screw located on
the camera unit. It is recommended that
you visit an INFINITI retailer if the camera
unit and/or area around the radar sen-
sors is damaged due to a collision.
Radio frequency statement
For USA
FCC: OAYSRR3B
This device complies with part 15 of the FCC
Rules. Operation is subject to the following two
conditions: (1) This device may not cause
harmful interference, and (2) this device must
accept any interference received, including
interference that may cause undesired op-
eration.
FCC Warning
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.
For Canada
Applicable law: Canada 310
This device complies with industry Canada
licence-exempt RSS standard(s).
Operation is subject to the following two
conditions: (1) This device may not cause
harmful interference, and (2) this device must
accept any interference received, including
interference that may cause undesired op-
eration of the device.
Frequency bands: 24.05–24.25GHz
Output power: less than 20 milliwatts
WARNING
Failure to follow the warnings and instruc-
tions for proper use of the RCTA system
could result in serious injury or death.
∙ The RCTA system is not a replacement
for proper driving procedures and is not
designed to prevent contact with ve-
hicles or objects. When backing out of a
parking space, always use the side and
rear mirrors and turn and look in the di-
rection your vehicle will move. Never rely
solely on the RCTA system.
The RCTA system will assist you when back-
ing out from a parking space. When the ve-
hicle is in reverse, the system is designed to
detect other vehicles approaching from the
right or left of the vehicle. If the system de-
tects cross traffic, it will alert you.
REAR CROSS TRAFFIC ALERT
(RCTA)
Starting and driving5-67

The RCTA system uses radar sensors1in-
stalled on both sides near the rear bumper to
detect an approaching vehicle.
The radar sensors
1can detect an ap-
proaching vehicle from up to approximately
66 ft (20 m) away.
LSD2216LSD2920
Starting and driving5-69

RCTA SYSTEM LIMITATIONS
WARNING
Listed below are the system limitations for
the RCTA system. Failure to operate the
vehicle in accordance with these system
limitations could result in serious injury or
death.
∙ Always check surroundings and turn tocheck what is behind you before backing
up. The radar sensors detect approaching
(moving) vehicles. The radar sensors can-
not detect every object such as:
– Pedestrians, bicycles, motorcycles, animals or child-operated toy vehicles
– A vehicle that is passing at speeds greater than approximately 19 mph
(30 km/h)
– A vehicle that is passing at speeds lower than approximately 5 mph
(8 km/h)
∙ The radar sensors may not detect ap- proaching vehicles in certain situations:
– Illustration
A: When a vehicle parked
next to you obstructs the beam of the
radar sensor.
– Illustration
B: When the vehicle is
parked in an angled parking space.
LSD3195
Starting and driving5-71

– IllustrationC: When the vehicle is
parked on inclined ground.
– Illustration
D: When an approaching
vehicle turns into your vehicle’s park-
ing lot aisle.
– Illustration
E: When the angle
formed by your vehicle and approach-
ing vehicle is small.
∙ The following conditions may reduce the ability of the radar to detect other
vehicles:
– Severe weather
– Road spray
– Ice/frost/snow/dirt build-up on the vehicle
∙ Do not attach stickers (including trans- parent material), install accessories or
apply additional paint near the radar sen-
sors. These conditions may reduce the
ability of the radar to detect other
vehicles.
∙ Excessive noise (e.g., audio system vol- ume, open vehicle window) will interfere
with the chime sound, and it may not be
heard. NOTE:
In the case of several vehicles approaching in
a row (Illustration 1) or in the opposite direc-
tion (Illustration 2), a chime may not be
sounded by the RCTA system after the first
vehicle passes the sensors.
Illustration 1
LSD2043
Illustration 2
LSD2044
5-72Starting and driving