sensor INFINITI Q50 2021 Service Manual

5-52Starting and driving
.The radar sensors may not be able to
detect and activate BSI when certain
objects are present such as:
— Pedestrians, bicycles, animals.
— Vehicles such as motorcycles, low height vehicles, or high ground
clearance vehicles.
— Vehicles remaining in the detec- tion zone when you accelerate
from a stop.
— Oncoming vehicles.
— A vehicle merging into an adja- cent lane at a speed approxi-
mately the same as your vehicle.
— A vehicle approaching rapidly from behind.
— A vehicle which your vehicle over- takes rapidly.
— A vehicle that passes through the detection zone quickly.
. The radar sensor’s detection zone is
designed based on a standard lane
width. When driving in a wider lane,
the radar sensors may not detect
vehicles in an adjacent lane. When
driving in a narrow lane, the radar
sensors may detect vehicles driving
two lanes away. .
The radar sensors are designed to
ignore most stationary objects, how-
ever objects such as guardrails, walls,
foliage and parked vehicles may oc-
casionally be detected. This is a
normal operation condition.
. The camera may not detect lane
markers in the following situations
and the BSI system may not operate
properly.
— On roads where there are multi- ple parallel lane markers; lane
markers that are faded or not
painted clearly; yellow painted
lane markers; nonstandard 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.
— On roads where there are sharply contrasting objects, such as sha-
dows, snow, water, wheel ruts,
seams or lines remaining after
road repairs.
— On roads where the traveling lane merges or separates. — When the vehicle’s traveling di-
rection does not align with the
lane markers.
— When traveling close to the ve- hicle in front of you, which ob-
structs the lane camera unit
detection range.
— When rain, snow or dirt adheres to the windshield in front of a lane
camera unit.
— When the headlights are not bright due to dirt on the lens or
if aiming is not adjusted properly.
— When strong light enters a lane camera unit. (For example: light
directly shines on the front of the
vehicle at sunrise or sunset.)
— When a sudden change in bright- ness occurs. (For example: when
the vehicle enters or exits a tunnel
or under a bridge.)
. Do not use the BSI system under the
following conditions because the sys-
tem may not function properly.
— During bad weather. (For exam- ple: rain, fog, snow, etc.)
— When driving on slippery roads, such as on ice or snow, etc.

5-54Starting and driving
JVS0738X
Illustration 2 – Approaching from behind
Illustration 2: If the driver activates the turn
signal then the system chimes a sound
(twice) and the side indicator light flashes.
JVS0760X
Illustration 3 - Approaching from behind
Illustration 3: If the BSI system is on and your
vehicle approaches 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 return the vehicle back to
the center of the driving lane.
NOTE:
. The radar sensors may not detect vehi-
cles which are approaching rapidly from
behind.
. If the driver activates the turn signal
before a vehicle enters the detection
zone, the side indicator light will flash
but no chime will sound when the other vehicle is detected.

JVS0739X
Illustration 4 - Overtaking another vehicle
Overtaking another vehicle
Illustration 4: The side indicator light illumi-
nates if you overtake a vehicle and that
vehicle stays in the detection zone for
approximately 3 seconds.
JVS0740X
Illustration 5 - Overtaking another vehicle
Illustration 5: If the driver activates the turn
signal while another vehicle is in the detec-
tion zone, then the system chimes (twice)
and the side indicator light flashes.
JVS0761X
Illustration 6 - Overtaking another vehicle
Illustration 6: If the BSI system is on and your
vehicle approaches 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 return the vehicle back to
the center of the driving lane.
NOTE:
. When overtaking several vehicles in a
row, the vehicles after the first vehicle
may not be detected if they are travel-
ing close together.
. The radar sensors may not detect slower
moving vehicles if they are passed
quickly.
Starting and driving5-55

5-56Starting and driving
.If the driver activates the turn signal
before a vehicle enters the detection
zone, the side indicator light will flash
but no chime will sound when the other
vehicle is detected.
JVS0741X
Illustration 7 - Entering from the side
Entering from the side
Illustration 7: 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.
WAF0555X
Illustration 8 - Entering from the side
Illustration 8: If the driver activates the turn
signal while another vehicle is in the detec-
tion zone, then the side indicator light
flashes and a chime will sound twice.
NOTE:
If the driver activates the turn signal before
a vehicle enters the detection zone, the side
indicator light will flash but no chime will
sound when another vehicle is detected.

JVS0761X
Illustration 9 - Entering from the side
Illustration 9: If the BSI system is on and your
vehicle approaches the 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 return the vehicle back to
the center of the driving lane.
JVS0742X
Illustration 10 - Entering from the side
Illustration 10: The BSI system will not
operate if your vehicle is on a lane marker
when another vehicle enters the detection
zone. In this case only the BSW system
operates.
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.
. If the driver activates the turn signal
before a vehicle enters the detection
zone, the side indicator light will flash
but no chime will sound when the other
vehicle is detected. .
BSI will not operate or will stop operat-
ing and only a warning chime will sound
under the following conditions.
— When the brake pedal is depressed.
(models without Direct Adaptive
Steering)
— When the vehicle is accelerated dur-
ing BSI system operation
— When steering quickly
— When the ICC, DCA, PFCW or FEB
warnings sound.
— When the hazard warning flashers
are operated.
— When driving on a curve at a high
speed.
Starting and driving5-57

5-58Starting and driving
JVS0826X
Vehicle information display
Dynamic driver assistance switch
SYSTEM TEMPORARILY UNA-
VAILABLE
Under the following conditions, a chime will
sound, the “currently unavailable” warning
message will appear in the vehicle informa-
tion display
and the BSI system will be
turned off automatically. The BSI system will
not be available until the conditions no
longer exist.
. When the VDC system (except TCS
function) or ABS operates.
. When the VDC system is turned off. .
When the INFINITI Drive Mode Selector
is turned to the SNOW mode.
Action to take:
When the above conditions no longer exist,
push the dynamic driver assistance switch
again to turn the BSI system back on.
When radar blockage is detected, the BSI
system will be turned off automatically, a
chime will sound and the “side radar ob-
struction” warning message will appear in
the vehicle information display
.
The BSI system is not available until the
conditions no longer exist. For additional
information, see “System maintenance”
(P.5-59).
Action to take:
When the above conditions no longer exist,
turn the BSI system on again. If the “side
radar obstruction” warning message ap-
pears even after the BSI system is turned
on again, stop the vehicle in a safe location,
place the shift lever in the P (Park) position
and turn the engine off. Check for and
remove objects obscuring the radar sensors
on the rear bumper, and restart the engine.
If the vehicle is parked in direct sunlight
under high temperature conditions (over
approximately 104°F (40°C)) and then the
BSI system is turned on, the BSI system may
be deactivated automatically. The “high
cabin temperature” warning message will appear in the vehicle information display
.
Action to take:
When the interior temperature is reduced,
push the dynamic driver assistance switch
again to turn the BSI system back on.
SYSTEM MALFUNCTION
When the BSI system malfunctions, it will be
turned off automatically, a chime will sound,
and the system “malfunction” warning mes-
sage with the driver assist system blind spot
indicator (orange) will appear in the vehicle
information display.
Action to take:
Stop the vehicle in a safe location and place
the shift lever in the P (Park) position. Turn
the engine off and restart the engine. If the
system “malfunction” warning message with
the driver assist system blind spot indicator
(orange) continues to be displayed, have the
BSI system checked. It is recommended you
visit an INFINITI retailer for this service.

JVS1125X
SYSTEM MAINTENANCE
The two radar sensorsfor the BSI system
are located near the rear bumper. Always
keep the area near the radar sensors clean.
The radar sensors may be blocked by
temporary 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 transparent
material), install accessories or apply addi-
tional paint near the radar sensors. Do not strike or damage the area around the
radar sensors.
It is recommended you visit an INFINITI
retailer if the area around the radar sensors
is damaged due to a collision.
The lane camera unit
for BSI system is
located above the inside mirror. To keep the
proper operation of BSI and prevent a
system malfunction, be sure to observe the
following:
. Always keep the windshield clean.
. Do not attach a sticker (including trans-
parent material) or install an accessory
near the camera unit.
. Do not place reflective materials, such as
white paper or a mirror, on the instru-
ment panel. The reflection of sunlight
may adversely affect the camera unit’s
capability of detecting the lane markers.
. Do not strike or damage the areas around
the camera unit. Do not touch the
camera lens or remove the screw located
on the camera unit. It is recommended
you contact an INFINITI retailer if the
camera unit is damaged due to an
accident.
Radio frequency statement
For USA
FCC ID: 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 operation.
CAUTION TO USERS
Changes or modifications not expressly
approved by the party responsible for
compliance could void the user’s authority
to operate the equipment.
For Canada
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 interference,
and (2) this device must accept any inter-
ference, including interference that may
cause undesired operation of the device.
Frequency bands: 24.05 – 24.25 Ghz
The field strength of SRR3-B is below 250
millivolts/m measured at 3 metres with an
average detector.
Starting and driving5-59

5-60Starting and driving
This device contains licence-exempt trans-
mitter(s)/receiver(s) that comply with In-
novation, Science and Economic
Development Canada’s licence-exempt
RSS(s). Operation is subject to the follow-
ing two conditions:
1. This device may not cause interference.
2. This device must accept any interference,
including interference that may cause un-
desired operation of the device.
Radiofrequency radiation exposure infor-
mation:
This equipment complies with radiation
exposure limits set forth for an uncontrolled
environment. This equipment should be
installed and operated with minimum dis-
tance of 20 cm between the radiator and
your body.WARNING
Failure to follow the warnings and
instructions for proper use of the BCI
system could result in serious injury or
death.
.The BCI system is not a replacement
for proper driving procedure, is not
designed to prevent contact with
vehicles or objects and does not
provide full brake power. When back-
ing out of parking spaces, always use
the inside and rear mirrors and turn
and look in the direction you will
move. Never rely solely on the BCI
system.
. There is a limitation to the detection
capability of the radar or the sonar.
Using the BCI system under some
road, ground, traffic or weather con-
ditions could lead to improper system
operation. Always rely on your own
operation to avoid accidents.
The BCI system can help alert the driver of
an approaching vehicle or objects behind the
vehicle when the driver is backing out of a
parking space.
JVS1121X
The BCI system uses radar sensorsinstalled on both sides near the rear bumper
to detect an approaching vehicle and sonar
sensors
to detect objects in the rear.
BACK-UP COLLISION
INTERVENTION (BCI) (if so equipped)

JVS0173X
JVS0234X
The radar sensorsdetect an approaching
vehicle from up to approximately 49 ft (15
m) away. The sonar sensors
detect
stationary objects behind the vehicle up to
approximately 4.9 ft (1.5 m). Refer to the
illustration for approximate zone coverage
areas
.
Starting and driving5-61

5-64Starting and driving
If the radar detects an approaching vehicle
from the side, the system chimes (once), the
side indicator light on the side the vehicle is
approaching from flashes and a yellow
rectangular frame
appears on the upper
display.
JVS0172X
Illustration 1
JVS0173X
Illustration 2 NOTE:
.
In the case of several vehicles approach-
ing in a row (Illustration 1) or in the
opposite direction (Illustration 2), a
chime may not be sounded by the BCI
system after the first vehicle passes the
sensors.
. The sonar system chime indicating there
is an object behind the vehicle has a
higher priority than the BCI chime
(single beep) indicating an approaching
vehicle. If the sonar system detects an
object behind the vehicle and the BCI
system detects an approaching vehicle
at the same time, the following indica-
tions are provided:
— The sonar system chime sounds
— The side indicator light on the side of
the approaching vehicle flashes, and
— A yellow rectangular frame appears
in the display.