2014 INFINITI Q50 Owner's Manual

5-82Starting and driving
SSD0252
The detection zone of the sensor is limited.
A vehicle ahead must be in the detection
zone for the system to operate.
A vehicle ahead may move outside of the
detection zone due to its position within
the same lane of travel. Motorcycles may
not be detected in the same lane ahead if
they are traveling offset from the centerline
of the lane. A vehicle that is entering the
lane ahead may not be detected until the
vehicle has completely moved into the
lane.If this occurs, the system may warn
you by blinking the system indicator and
sounding the chime. The driver may have
to manually control the proper distance away from vehicle traveling ahead.

SSD0253
When driving on some roads, such as
winding, 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
affected by vehicle operation (steering
maneuver or traveling position in the lane,
etc.) or vehicle condition.If this occurs, the
system may warn you by blinking the
system indicator and sounding the chime
unexpectedly. You will have to manually
control the proper distance away from the vehicle traveling ahead.
JVS0225X
DCA system display and indicators
The display is located between the speed-
ometer and tachometer.
1. Driver assist system forward indicator
.Driver assist system forward indica-
tor (green):
Indicates that the DCA system is ON.
.Driver assist system forward indica-tor (orange):
Indicates whether there is a mal-
function in the DCA system.
2. Vehicle ahead detection indicator: Indicates whether it detects a vehicle in
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5-84Starting and driving
front of you.
JVS0206X
Dynamic driver assistance switch
Operating DCA system
The DCA system turns on when the
dynamic driver assistance switch on the
steering wheel is pushed when the [Dis-
tance Control Assist] is enabled in the
settings menu on the lower display. The
driver assist system forward indicator
(green) appears in the vehicle information
display when the DCA system is turned on.
The system will start to operate after the
vehicle speed becomes above approxi-
mately 3 MPH (5 km/h).
JVS0246X
How to enable/disable the DCA system:
Perform the following steps to enable or
disable the DCA system.
1. Push the MENU
*1button and touch
[Driver Assistance] on the lower dis-
play.
2. Touch [Forward Assist].
3. Touch [Distance Control Assist] to en- able or disable the system.
Under the following conditions, the DCA
system will not operate and the “currently
unavailable” warning message will appear
in the vehicle information display:

.When the INFINITI Drive Mode Selector
is turned to the SNOW mode (To use the
DCA system, turn the INFINITI Drive
Mode Selector to a mode other than the
SNOW mode, then turn on the dynamic
driver assistance switch.)
For details about the INFINITI Drive
Mode Selector, see “INFINITI Drive
Mode Selector” (P.5-21).
. When the VDC system is off (To use the
DCA system, turn on the VDC, then
push the dynamic driver assistance
switch.)
For details about the VDC system, see
“Vehicle Dynamic Control (VDC) sys-
tem” (P.5-108).
. When ABS or VDC (including the trac-
tion control system) is operating
When the Conventional (fixed speed) cruise
control mode is operating, the DCA system
will not operate. (To use the DCA system,
turn the Conventional (fixed speed) cruise
control mode off, then push the dynamic
driver assistance switch.)
For details about the Conventional (fixed
speed) cruise control mode, see “Intelli-
gent Cruise Control (ICC) system” (P.5-58).
When the engine is turned off, the DCA
system is automatically turned off.
JVS0244X
1. System set display with a vehicle ahead
2. System set display without a vehicle ahead
3. System set display with a vehicle ahead (brake operation is necessary)
System operation
WARNING
The Distance Control Assist (DCA) system
automatically decelerates your vehicle to
help assist the driver to maintain a follow-
ing distance from the vehicle ahead. Manu- ally brake when deceleration is required to
maintain a safe distance upon sudden
braking by the vehicle ahead or when a
vehicle suddenly appears in front of you.
Always stay alert when using the DCA
system.
The Distance Control Assist (DCA) system
helps assist the driver to keep a following
distance to the vehicle ahead by braking
and moving the accelerator pedal upward
in the normal driving condition.
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5-86Starting and driving
When a vehicle ahead is detected:
The vehicle ahead detection indicator
comes on.
When the vehicle approaches a vehicle
ahead:
.If the driver’ s foot is not on the
accelerator pedal, the system activates
the brakes to decelerate smoothly as
necessary. If the vehicle ahead comes
to a stop, the vehicle decelerates to a
standstill within the limitations of the
system.
. If the driver’s foot is on the accelerator
pedal, the system moves the accelera-
tor pedal upward to assist the driver to
release the accelerator pedal.
When brake operation by the driver is
required:
The system alerts the driver by a warning
chime and blinking the vehicle ahead
detection indicator. If the driver’s foot is
on the accelerator pedal after the warning,
the system moves the accelerator pedal
upward to assist the driver to switch to the
brake pedal. The stop lights of the vehicle come on
when braking is performed by the DCA
system.
When the brake operates, a noise may be
heard. This is not a malfunction.
WARNING
.
When the vehicle ahead detection in-
dicator is not illuminated, the system
will not control or warn the driver.
. Depending on the position of the accel-
erator pedal, the system may not be able
to assist the driver to release the
accelerator pedal appropriately.
. If the vehicle ahead comes to a stand-
still, the vehicle decelerates to a stand-
still within the limitations of the system.
The system will release brake control
with a warning chime once it judges the
vehicle is at a standstill. To prevent the
vehicle from moving, the driver must
depress the brake pedal. (The system
will resume control automatically once
the system reaches 3 MPH (5 km/h)).
Overriding the system:
The following driver’s operation overrides
the system operation.
.When the driver depresses the accel-
erator pedal even further while the
system is moving the accelerator pedal
upward, the DCA system control of the
accelerator pedal is canceled.
. When the driver’s foot is on the accel-
erator pedal, the brake control by the
system is not operated.
. When the driver’s foot is on the brake
pedal, neither the brake control nor the
alert by the system operates.
. When the Intelligent Cruise Control (ICC)
system is set, the DCA system will be
cancelled.
Approach warning
If your vehicle comes closer to the vehicle
ahead due to rapid deceleration of that
vehicle or if another vehicle cuts in, the
system warns the driver with the chime
and DCA system display. Decelerate by
depressing the brake pedal to maintain a
safe vehicle distance if:
. The chime sounds.
. The vehicle ahead detection indicator
blinks.

.The driver assist system forward indi-
cator (orange) blinks.
. When the vehicles are traveling at the
same speed and the distance between
vehicles is not changing
. When the vehicle ahead is traveling
faster and the distance between vehi-
cles is increasing
. When a vehicle cuts in near your vehicle
The driver assist system forward indicator
(orange) blinks and the warning chime will
not sound when your vehicle approaches
vehicles that are parked or moving slowly.
SSD0284A
NOTE:
The approach warning chime may sound
and the driver assist system forward
indicator (orange) 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 DCA 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
Condition A:
Under the following conditions, the Dis-
tance Control Assist (DCA) system is
automatically canceled. The chime will
sound and the
“currently unavailable”
warning message will appear in the vehicle
information display. The system will not be
able to be set.
. When the VDC system is turned off
. When the VDC or ABS (including the
traction control system) operates
. 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 DCA 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-
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5-88Starting and driving
structed, making it impossible to detect a
vehicle ahead, the DCA system is auto-
matically canceled.
The chime will sound, the driver assist
system forward indicator (orange) and the
“front radar obstruction”warning message
will appear in the vehicle information
display.
Action to take:
If the driver assist system forward indicator
(orange) and the warning message appear,
park the vehicle in a safe place, turn the
engine off. When the radar signal is
temporarily interrupted, clean the sensor
area of the front bumper and restart the
engine. If the warning message continues
to be displayed, have the DCA system
checked by an INFINITI retailer.
Condition C:
When the DCA system is not operating
properly, the chime sounds, the driver
assist system forward indicator (orange)
and the system “malfunction” warning
message will appear in the vehicle infor-
mation display. Action to take:
If the driver assist system forward indicator
(orange) and the warning message appear,
park the vehicle in a safe place. Turn the
engine off, restart the engine, and turn on
the DCA system again.
If it is not possible to set the system or the
indicator stays on, it may indicate that the
system is malfunctioning. Although the
vehicle is still driveable under normal
conditions, have the vehicle checked at
an INFINITI retailer.
Sensor maintenance
The sensor for the DCA system is common
with the Intelligent Cruise Control (ICC)
system and is located behind the lower
grille of the front bumper.
For the sensor maintenance, see
“Intelli-
gent Cruise Control (ICC) system” (P.5-58).
FCC Notice:
For USA:
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 interfer-
ence received, including interference
that may cause undesired operation.
FCC Warning
Changes or modification 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 interfer-
ence, including interference that may
cause undesired operation of the de-
vice.

The forward emergency braking system can
assist the driver when there is a risk of a
forward collision with the vehicle ahead in
the traveling lane.
JVS0235X
The forward emergency braking system
uses a radar sensor
*Alocated behind
the lower grille of the front bumper to
measure the distance to the vehicle ahead
in the traveling lane.
The forward emergency braking system
operates at speeds above approximately
3 MPH (5 km/h). If there is a risk of a
collision, the forward emergency braking
system issues a visual and audible warn-
ing and pushes the accelerator pedal up. If
the driver releases the accelerator pedal,
then the forward emergency braking sys-
tem applies partial braking. If the driver
does not take action, the forward emer- gency braking system issues the second
visual and audible warning, and applies
harder braking.
WARNING
.
The forward emergency braking system
is a supplemental aid to the driver. It is
not a replacement for the driver’s atten-
tion to traffic conditions or responsibility
to drive safely. It cannot prevent acci-
dents due to carelessness or dangerous
driving techniques.
. The forward emergency braking system
does not function in all driving, traffic,
weather and road conditions.
Starting and driving5-89
FORWARD EMERGENCY BRAKING SYSTEM
(if so equipped)