brake INFINITI QX80 2018 Service Manual

5-52Starting and driving
.BSI braking will not operate or will stop
operating and only a warning chime will
sound under the following conditions.
— When the brake pedal is depressed.
— 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.

Operation is subject to the following two
conditions:
1. This device may not cause harmfulinterference.
2. This device must accept any interference received, including interference that may
cause undesired operation.
Frequency of operation: 24.05GHz —
24.25GHz
Field Strength: Not greater than 2.5V/m
peak (0.25V/m average) at a distance of 3 m
The manufacturer is not responsible for any
radio or TV interference caused by un-
authorized modifications to this equipment.
Such modifications could void the user’s
authority to operate the equipment.
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.
JVS1152X
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.
Starting and driving5-55
BACK-UP COLLISION
INTERVENTION (BCI) (if so equipped)

JVS1099X
Side indicator light
BCI system indicator
BCI system key (on the center display)
Center multi-function control panel
JVS0173X
BCI SYSTEM OPERATION
When the shift lever is in the R (Reverse)
position and the vehicle speed is less than
approximately 5 MPH (8 km/h), the BCI
system operates.
If the radar detects a vehicle approaching
from the side or the sonar detects close
stationary objects behind the vehicle, the
system gives visual and audible warnings. If
the driver does not apply the brakes, the
system automatically applies the brake for a
moment when the vehicle is moving back-
wards. After the automatic brake applica-
tion, the driver must depress the brake pedal
to maintain brake pressure. If the driver’s
foot is on the accelerator pedal, the system
Starting and driving5-57

5-58Starting and driving
pushes the accelerator upward before ap-
plying the brake. If you continue to accel-
erate, the system will not engage the brake.
JVS0304X
Center display
JVS0197X
BCI ON indicatorWhen the shift lever is placed in the R
(Reverse) position, the indicator on the BCI
system key
illuminates on the center
display and BCI ON indicator appears on
the vehicle information display.

5-60Starting and driving
.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 issued to 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 indications 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 center display.
JVS0307X
If an approaching vehicle or close object
behind the vehicle is detected when your
vehicle is backing up, a red frame
will
appear in the center display and the system
will chime three times. Then, the brakes will
be applied momentarily. After the automatic
brake application, the driver must depress
the brake pedal to maintain brake pressure.
If the driver’s foot is on the accelerator
pedal, the system moves the accelerator
pedal upward before the braking is applied.
However, if you continue to accelerate, the
system will not engage the brakes.
The BCI system does not operate if the
object is very close to the bumper.
JVS0304X
JVS0182X
BCI OFF indicator

— Severe weather
— Road spray
— Ice/frost/dirt build up on thevehicle
. Do not attach stickers (including
transparent material), install acces-
sories or apply additional paint near
the radar sensors. These conditions
may reduce the ability of the radar
sensors to detect other vehicles.
. The sonar sensors detect stationary
objects behind the vehicle. The sonar
sensor may not detect:
— Small or moving objects
— Wedge-shaped objects
— Object close to the bumper (less than approximately 1 ft (30 cm))
— Thin objects such as rope, wire and chain, etc.
. The brake engagement by the BCI
system is not as effective on a slope
as it is on flat ground. When on a
steep slope the system may not
function properly.
. Do not use the BCI system under the
following conditions because the sys-
tem may not function properly. — When driving with a tire that is
not within normal tire conditions
(for example, tire wear, low tire
pressure, installation of spare tire,
tire chains, non-standard wheels).
— When the vehicle is equipped with non-original brake parts or sus-
pension parts.
— When towing a trailer or other vehicle.
. Excessive noise (for example, audio
system volume, open vehicle window)
will interfere with the chime sound,
and it may not be heard.
JVS0689X
Vehicle information display
SYSTEM TEMPORARILY UNA-
VAILABLE
Under the following conditions, a chime will
sound and “BCI NOT AVAILABLE” warning
message will appear in the vehicle informa-
tion display
, and the BCI system will be
turned off automatically.
. If the vehicle is parked in direct sunlight
under high temperature conditions (over
approximately 104°F (40°C)).
. When side radar blockage is detected.
Turn off the BCI system and turn it on again
when the above conditions no longer exist.
Starting and driving5-63

5-66Starting and driving
your foot off the accelerator pedal. Your
vehicle will maintain the set speed.
.To pass another vehicle, depress the
accelerator pedal. When you release the
pedal, the vehicle will return to the
previously set speed.
. The vehicle may not maintain the set
speed on winding or hilly roads. If this
happens, drive without the cruise con-
trol.
To cancel the preset speed, follow any of
these methods:
1. Push the CANCEL switch.
2. Tap the brake pedal.
3. Move the shift lever to the N (Neutral) position.
4. Turn the MAIN switch off. The CRUISE indicator light will turn off.
. If you depress the brake pedal while
pushing the ACCELERATE/RESUME
or COAST/SET switch and reset at the
cruising speed, the cruise control will
disengage. Turn the MAIN switch off
once and then turn it on again.
. The cruise control will automatically
cancel if the vehicle slows more than 8
MPH (13 km/h) below the set speed.
. If you move the shift lever to N (Neutral)
position, the cruise control will be can-
celed. To reset at a faster cruising speed,
use one
of the following methods:
. Depress the accelerator pedal. When the
vehicle attains the desired speed, push
and release the COAST/SET switch.
. Push and hold the ACCELERATE/RE-
SUME switch. When the vehicle attains
the speed you desire, release the switch.
. Push, then quickly release the ACCEL-
ERATE/RESUME switch. Each time you
do this, the set speed will increase by
about 1 MPH (1.6 km/h).
To reset at a slower cruising speed, use one
of the following methods:
. Lightly tap the brake pedal. When the
vehicle attains the desired speed, push
the COAST/SET switch and release it.
. Push and hold the COAST/SET switch.
Release the switch when the vehicle
slows down to the desired speed.
. Push, then quickly release the COAST/
SET switch. Each time you do this, the
set speed will decrease by about 1 MPH
(1.6 km/h).
To resume the preset speed, push and
release the ACCELERATE/RESUME
switch. The vehicle will resume the last set
cruising speed when the vehicle speed is over
25 MPH (40 km/h).
WARNING
Failure to follow the warnings and
instructions for proper use of the ICC
system could result in serious injury or
death.
. ICC is not a collision avoidance or
warning device. For highway use only
and it is not intended for congested
areas or city driving. Failure to apply
the brakes could result in an accident.
. Always observe posted speed limits
and do not set the speed over them.
. Always drive carefully and atten-
tively when using either cruise con-
trol mode. Read and understand the
Owner’s Manual thoroughly before
using the cruise control. To avoid
serious injury or death, do not rely
on the system to prevent accidents or
to control the vehicle’s speed in
emergency situations. Do not use
cruise control except in appropriate
road and traffic conditions.
. In the conventional (fixed speed)
cruise control mode, a warning chime
will not sound to warn you if you are
too close to the vehicle ahead. Pay
special attention to the distance
between your vehicle and the vehicle
INTELLIGENT CRUISE CONTROL
(ICC) (if so equipped)

JVS1154X
The system is intended to enhance the
operation of the vehicle when following a
vehicle traveling in the same lane and
direction.
If the radar sensor
detects a slower
moving vehicle ahead, the system will reduce
the vehicle speed so that your vehicle
follows the vehicle in front at the selected
distance.
The system automatically controls the throt-
tle and applies the brakes (up to approxi-
mately 40% of vehicle braking power) if
necessary.
The detection range of the sensor is approxi-
mately 650 ft (200 m) ahead.
Vehicle-to-vehicle distance control
mode operation
The vehicle-to-vehicle distance control
mode is designed to maintain a selected
distance and reduce the speed to match the
slower vehicle ahead; the system will de-
celerate the vehicle as necessary and if the
vehicle ahead comes to a stop, the vehicle
decelerates to a standstill. However, the ICC
system can only apply up to approximately
40% of the vehicle’s total braking power.
This system should only be used when traffic
conditions allow vehicle speeds to remain
fairly constant or when vehicle speeds
change gradually. If a vehicle moves into
the traveling lane ahead or if a vehicle
traveling ahead rapidly decelerates, the
distance between vehicles may become
closer because the ICC system cannot
decelerate the vehicle quickly enough. If this
occurs, the ICC system will sound a warning
chime and blink the system display to notify
the driver to take necessary action.
The system will cancel and a warning chime
will sound if the speed is below approxi-
mately 15 MPH (24 km/h) and a vehicle is
not detected ahead. The system will also
disengage when the vehicle goes above the
maximum set speed.
See “Approach warning” (P.5-76). The following items are controlled in the
vehicle-to-vehicle distance control mode:
.
When there are no vehicles traveling
ahead, the vehicle-to-vehicle distance
control mode maintains the speed set
by the driver. The set speed range is
between approximately 20 and 90 MPH
(32 and 144 km/h).
. When there is a vehicle traveling ahead,
the vehicle-to-vehicle distance control
mode adjusts the speed to maintain the
distance, selected by driver, from the
vehicle ahead. The adjusting speed range
is up to the set speed. If the vehicle
ahead comes to a stop, the vehicle
decelerates to a standstill within the
limitations of the system. The system
will cancel once it judges a standstill with
a warning chime.
. When the vehicle traveling ahead has
moved out from its lane of travel, the
vehicle-to-vehicle distance control mode
accelerates and maintains vehicle speed
up to the set speed.
The ICC system does not control vehicle
speed or warn you when you approach
stationary and slow moving vehicles. You
must pay attention to vehicle operation to
maintain proper distance from vehicles
ahead when approaching toll gates or traffic
congestion.
Starting and driving5-69

5-72Starting and driving
SSD1053
To set cruising speed,accelerate your
vehicle to the desired speed, push the
COAST/SET switch and release it. (Vehicle
ahead detection indicator, set distance in-
dicator and set vehicle speed indicator come
on.) Take your foot off the accelerator pedal.
Your vehicle will maintain the set speed.
SSD1105
When the COAST/SET switch is pushed
under the following conditions, the system
cannot be set and the ICC indicators will
blink for approximately 2 seconds:
. When traveling below 20 MPH (32
km/h) and the vehicle ahead is not
detected
. When the shift lever is not in the D (Drive)
or manual shift mode
. When the parking brake is applied
. When the brakes are operated by the
driver
SSD1106
When the COAST/SET switch is pushed
under the following conditions, the system
cannot be set.
A warning chime will sound and the ICC
indicators will blink.
. When the SNOW mode is pushed
(SNOW mode switch) (To use the ICC
system, turn off the SNOW mode
switch, push the MAIN switch to turn
off the ICC and reset the ICC switch by
pushing the MAIN switch again.)
For details about the SNOW mode
switch, see “SNOW mode” (P.5-130).
. When the 4WD shift switch is in the 4H
or 4L position. (To use the ICC system,
place the 4WD shift switch in the AUTO

position, push the MAIN switch to turn
off the ICC system and reset the ICC
switch by pushing the MAIN switch
again (for 4WD models).
For details about the 4WD shift switch,
see “INFINITI all-mode 4WD
®” (P.5-
120).
. When the VDC system is off (To use the
ICC system, turn on the VDC system.
Push the MAIN switch to turn off the
ICC system and reset the ICC switch by
pushing the MAIN switch again.)
For details about the VDC system, see
“Vehicle Dynamic Control (VDC) system”
(P.5-133).
. When ABS or VDC (including the traction
control system) is operating
. When a wheel is slipping (To use the ICC
system, make sure the wheels are no
longer slipping. Push the MAIN switch to
turn off the ICC, and reset the ICC
system by pushing the MAIN switch
again.)
SSD1107
System set display with vehicle ahead
System set display without vehicle
ahead
System operation
The driver sets the desired vehicle speed
based on the road conditions. The ICC
system maintains the set vehicle speed,
similar to standard cruise control, as long
as no vehicle is detected in the lane ahead.
The ICC system displays the set speed.
Vehicle detected ahead:
When a vehicle is detected in the lane ahead,
the ICC system decelerates the vehicle by
controlling the throttle and applying the brakes to match the speed of a slower
vehicle ahead. The system then controls the
vehicle speed based on the speed of the
vehicle ahead to maintain the driver selected
distance.
The stoplights of the vehicle come on when
braking is performed by the ICC system.
When the brake operates, a noise may be
heard and/or vibration may be felt. This is
not a malfunction.
When a vehicle ahead is detected, the
vehicle ahead detection indicator comes on.
The ICC system will also display the set
speed and selected distance.
Vehicle ahead not detected:
Starting and driving5-73