brake sensor INFINITI Q50 2014 Owner's Manual

2-40Instruments and controls
JVI0670X
Ambient image sensor maintenance:
The ambient image sensor
*1for the high
beam assist system is located in front of
the inside mirror. To keep the proper
operation of the high beam assist system
and prevent a system malfunction, be sure
to observe the following:
. Always keep the windshield clean.
. Do not attach a sticker (including
transparent material) or install an
accessory near the ambient image
sensor.
. Do not strike or damage the areas
around the ambient image sensor. Do
not touch the sensor lens that is located on the ambient image sensor.
If the ambient image sensor is damaged
due to an accident, contact an INFINITI
retailer.
Battery saver system
A chime will sound and the light reminder
warning will appear in the vehicle informa-
tion display when the driver side door is
opened with the light switch in the
orposition and the ignition switch in the
ACC, OFF or LOCK position.
When the headlight switch is in the
orposition while the ignition switch is in
the ON position, the lights will automati-
cally turn off after a period of time when
the ignition switch has been pushed to the
OFF position.
When the headlight switch remains in the
orposition after the lights
automatically turn off, the lights will turn
on when the ignition switch is pushed to
the ON position.
CAUTION
. When you turn on the headlight switch
again after the lights automatically turn off, the lights will not turn off auto-
matically. Be sure to turn the light
switch to the OFF position when you
leave the vehicle for extended periods of
time, otherwise the battery will be
discharged.
. Never leave the light switch on when the
engine is not running for a period of time
even if the headlights turn off automa-
tically.
Daytime running light system
The daytime running lights automatically
illuminate when the engine is started with
the parking brake released. The daytime
running lights operate with the headlight
switch in the OFF, AUTO or
position.
Turn the headlight switch to the
position for full illumination when driving
at night.
If the parking brake is applied before the
engine is started, the daytime running
lights do not illuminate. The daytime
running lights illuminate once the parking
brake is released. The daytime running
lights will remain on until the ignition
switch is pushed to the OFF position.

JVS0234X
The BCI system uses radar sensors*1installed on both sides near the rear
bumper to detect an approaching vehicle
and sonar sensors
*2to detect objects in
the rear.
The radar sensors
*1detect the approach-
ing vehicle from up to approximately 49 ft
(15 m) away. The sonar sensors
*2detect
a rear obstacle at up to approximately 4.9
ft (1.5 m) from the bumper. Refer to the
illustration for approximate zone coverage
areas
*3.
If the radar detects a vehicle approaching
from the side or the sonar detects close
objects in the rear, the system gives visual and audible warnings, and then applies
the brake for a moment when the vehicle is
moving backwards. After the automatic
brake application, the driver must depress
the brake pedal to maintain brake pres-
sure. If the driver’s foot is on the accel-
erator pedal, the system pushes the
accelerator upward before applying the
brake. If you continue to press the accel-
erator, the system will not engage the
brake.
WARNING
.
The BCI system is not a replacement for
proper driving procedure and is not
designed to prevent contact with vehi-
cles or objects. When backing out of
parking space, always use the inside
and outside 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 and the sonar.
Using the BCI system under some road,
ground, lane marker, traffic or weather
conditions could lead to improper sys-
tem operation. Always rely on your own operation to avoid accidents.
Starting and driving5-49

JVS0172X
JVS0173X
NOTE:
.In the case of several vehicles ap-
proaching in a row or in the opposite
direction, a chime may not be issued to
the BCI system after the first vehicle
passes the sensors.
. When the sonar sounds a tone, the BCI
system does not chime a sound (single
beep).
If the detected vehicle approaches closer
and your vehicle is backing up toward the
detected vehicle, the system chimes a
sound (three times) and a red rectangular
frame
*Aappears on the upper display.
The system applies the brake for a
moment. After the automatic brake appli-
cation, the driver must depress the brake
pedal to maintain brake pressure.
If the driver’s foot is on the accelerator
pedal, the system pushes the accelerator
pedal upward before applying the brake. If
you continue to press the accelerator
pedal, the system will not engage the
brake.
A close object behind the vehicle:
If the sonar detects a close object behind
the vehicle when your vehicle is backing
up, the system chimes a sound (three times) and red rectangular frame
*Aappears on the upper display. The system
applies the brake for a moment. 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 pushes the accelerator
pedal upward before applying the brake. If
you continue to press the accelerator
pedal, the system will not engage the
brake.
NOTE:
The BCI system does not operate if the
object is very close to the bumper.
Starting and driving5-51

5-54Starting and driving
.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 systems under the
following conditions because the system
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 suspen-
sion parts.
. Excessive noise (for example, audio
system volume, open vehicle window)
will interfere with the chime sound, and
it may not be heard.
BCI temporarily not available
When the following message appears in
the vehicle information display, a chime
will sound and the BCI system will be
turned off automatically. .
“Unavailable High Accelerator Temp.”:
When the accelerator pedal actuator
detects that the internal motor tem-
perature is high.
Action to take:
Turn on the BCI system again when the
above condition no longer exists.
. “Unavailable Side Radar Obstruction”:
When side radar blockage is detected.
Action to take:
If the warning message appears, park
the vehicle in a safe place, turn the
engine off. Check for and remove
objects obscuring the radar sensors
on the rear bumper, and restart the
engine. If the BSW or BSI system
operates normally, the BCI system will
also operate normally. (See “BSW/BSI
temporarily not available” (P.5-47).)
BCI malfunction
When the BCI system malfunctions, it will
be turned off automatically, a beep will
sound and BCI system “malfunction”
warning message will appear in the vehicle
information display.
Stop the vehicle in a safe location, turn the
engine off and restart the engine. If the
warning message continues to appear, have the system checked by an INFINITI
retailer.

5-60Starting and driving
JVS0235X
PRECAUTIONS ON VEHICLE-TO-VE-
HICLE DISTANCE CONTROL MODE
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
*Adetects 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
throttle and applies the brakes (up to
approximately 40% of vehicle braking power) if necessary.
The detection range of the sensor is
approximately 650 ft (200 m) ahead.
WARNING
.
This system is only an aid to assist the
driver and is not a collision warning or
avoidance device. It is the driver’ s
responsibility to stay alert, drive safely
and be in control of the vehicle at all
times.
. The system is primarily intended for use
on straight, dry, open roads with light
traffic. It is not advisable to use the
system in city traffic or congested areas.
. This system will not adapt automatically
to road conditions. This system should
be used in evenly flowing traffic. Do not
use the system on roads with sharp
curves, or on icy roads, in heavy rain or
in fog.
The radar sensor will not detect under
most conditions:
.Stationary and slow moving vehicles
. Pedestrians or objects in the roadway .
Oncoming vehicles in the same lane
. Motorcycles traveling offset in the travel
lane
WARNING
. As there is a performance limit to the
distance control function, never rely
solely on the Intelligent Cruise Control
(ICC) system. This system does not
correct careless, inattentive or absent-
minded driving, or overcome poor visi-
bility in rain, fog, or other bad weather.
Decelerate the vehicle speed by depres-
sing the brake pedal, depending on the
distance to the vehicle ahead and the
surrounding circumstances in order to
maintain a safe distance between vehi-
cles.
. 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 that
the vehicle has come to a standstill and
sound a warning chime. To prevent the
vehicle from moving, the driver must
depress the brake pedal.
. The system may not detect the vehicle in

front of you in certain road or weather
conditions. To avoid accidents, never use
the ICC system under the following
conditions:
—On roads where the traffic is heavyor there are sharp curves
—On slippery road surfaces such ason ice or snow, etc.
—During bad weather (rain, fog, snow,etc.)
—When rain, snow or dirt adhere tothe system sensor
—On steep downhill roads (the vehi-cle may go beyond the set vehicle
speed and frequent braking may
result in overheating the brakes)
—On repeated uphill and downhillroads
—When traffic conditions make itdifficult to keep a proper distance
between vehicles because of fre-
quent acceleration or deceleration
. In some road or traffic conditions, a
vehicle 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 ICC system
when it is not recommended in this
section.
JVS0235X
VEHICLE-TO-VEHICLE DISTANCE
CONTROL MODE OPERATION
Always pay attention to the operation of
the vehicle and be ready to manually
control the proper following distance. The
vehicle-to-vehicle distance control mode of
the Intelligent Cruise Control (ICC) system
may not be able to maintain the selected
distance between vehicles (following dis-
tance) or selected vehicle speed under
some circumstances.
The vehicle-to-vehicle distance control
mode uses a sensor
*Alocated behind
the lower grille of the front bumper to
Starting and driving5-61

5-72Starting and driving
SSD0284A
NOTE:
The approach warning chime may sound
and the system display may blink when
the radar sensor detects objects on the
side of the vehicle
*Aor on the side of the
road
*A. This may cause the ICC system to
decelerate 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 manually control the
proper distance ahead of your vehicle.
Also, the sensor sensitivity can be affected
by vehicle operation (steering maneuver or driving position in the lane) or traffic or
vehicle condition (for example, if a vehicle
is being driven with some damage).
Automatic cancellation
A chime sounds under the following con-
ditions and the control is automatically
canceled.
.
When the vehicle ahead is not detected
and your vehicle is traveling below the
speed of 15 MPH (24 km/h)
. When the system judges the vehicle is
at standstill
. When the shift lever is not in the D
position or Manual mode
. When the parking brake is applied
. When the INFINITI Drive Mode Selector
is turned to the SNOW mode
. When the VDC system is turned off
. When ABS or VDC (including the trac-
tion control system) operates
. When distance measurement becomes
impaired due to adhesion of dirt or
obstruction to the sensor
. When a wheel slips
Warning and display
Condition A:
Under the following conditions, the Intelli-
gent Cruise Control (ICC) system is auto-
matically canceled. The chime will sound
and the “currently unavailable” warning
message will appear in the vehicle infor-
mation display.
. When the VDC is turned off
. When the ABS or VDC (including the
traction control system) operates
. When a tire slips
. When the INFINITI Drive Mode Selector
is turned to the SNOW mode
. When the radar signal is temporarily
interrupted
Action to take:
When the conditions listed above are no
longer present, turn the ICC system back
on to use the system.
Condition B:
When the radar sensor area of the front
bumper is covered with dirt or is ob-
structed, making it impossible to detect a
vehicle ahead, the ICC system is automa-
tically canceled.
The chime will sound and the “front radar

The Distance Control Assist (DCA) system
brakes and moves the accelerator pedal
upward according to the distance from and
the relative speed of the vehicle ahead to
help assist the driver to maintain a
following distance.
WARNING
.Always drive carefully and attentively
when using the DCA system. Read and
understand the Owner’s Manual thor-
oughly before using the DCA system. 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 the DCA system
except in appropriate road and traffic
conditions.
. 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 that
the vehicle has come to a standstill with
a warning chime. To prevent the vehicle
from moving, the driver must depress
the brake pedal.
. The DCA system will not apply brake
control while the driver’s foot is on the accelerator pedal.
JVS0235X
PRECAUTIONS ON DCA SYSTEM
The system is intended to assist the driver
to keep a following distance from the
vehicle ahead traveling in the same lane
and direction.
If the radar sensor
*Adetects a slower
moving vehicle ahead, the system will
reduce the vehicle speed to help assist
the driver to maintain a following distance.
The system automatically controls the
throttle and applies the brakes (up to
approximately 40% of vehicle braking
power) if necessary.
The detection range of the sensor is
Starting and driving5-79
DISTANCE CONTROL ASSIST (DCA) SYSTEM
(if so equipped)

5-80Starting and driving
approximately 650 ft (200 m) ahead.
WARNING
.This system is only an aid to assist the
driver and is not a collision warning or
avoidance device. It is the driver’ s
responsibility to stay alert, drive safely
and be in control of the vehicle at all
times.
. This system will not adapt automatically
to road conditions. Do not use the
system on roads with sharp curves, or
on icy roads, in heavy rain or in fog.
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
WARNING
. 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.
. 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 with sharp curves
—On slippery road surfaces such as
on ice or snow, etc.
—During bad weather (rain, fog, snow,etc.)
—When rain, snow or dirt adhere tothe system sensor
—On steep downhill roads (frequentbraking may result in overheating
the brakes)
—On repeated uphill and downhillroads .
In some road or traffic conditions, a
vehicle 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.

JVS0235X
DCA SYSTEM OPERATION
Always pay attention to the operation of
the vehicle and be ready to manually
decelerate to maintain the proper following
distance. The Distance Control Assist (DCA)
system may not be able to decelerate the
vehicle under some circumstances.
The DCA system uses a sensor
*Alocated
behind the lower grille of the front bumper
to detect vehicles traveling ahead.
The following are some conditions in which
the sensor cannot detect the signals:
. When the snow or road spray from
traveling vehicles reduces the sensor’s visibility
. When excessively heavy baggage is
loaded in the rear seat or the luggage
room of your vehicle
The DCA system is designed to automati-
cally check the sensor’s operation. When
the sensor area of the front bumper is
covered with dirt or is obstructed, the
system will automatically be canceled. If
the sensor area is covered with ice, a
transparent or translucent vinyl bag, etc.,
the DCA system may not detect them. In
these instances, the DCA system may not
be able to decelerate the vehicle properly.
Be sure to check and clean the sensor area
regularly.
The DCA system is designed to help assist
the driver to maintain a following distance
from the vehicle ahead. The system will
decelerate as necessary and if the vehicle
ahead comes to a stop, the vehicle
decelerates to a standstill. However, the
DCA system can only apply up to approxi-
mately 40% of the vehicles total braking
power. 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
DCA system cannot decelerate the vehicle quickly enough. If this occurs, the DCA
system will sound a warning chime and
blink the system display to notify the driver
to take necessary action.
See
“Approach warning” (P.5-86).
This system only brakes and moves the
accelerator pedal upward to help assist the
driver to maintain a following distance
from the vehicle ahead. Acceleration
should be operated by the driver.
The DCA 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.
Starting and driving5-81