Infiniti Q50 (2021 year). Manual in english — page 20

5-94

Starting and driving

JVS0244X

System set display with a vehicle ahead
System set display without a vehicle
ahead
System set display with a vehicle ahead
(brake operation is necessary)

The DCA system helps assist the driver to
keep a following distance to the vehicle
ahead by braking and moving the accelera-
tor pedal upward in the normal driving
condition.

When a vehicle ahead is detected:

The vehicle ahead detection indicator ap-
pears.

When the vehicle approaches a vehicle
ahead:

.

If the driver’s foot is not on the accel-

erator pedal, the system activates the
brakes to decelerate smoothly as neces-
sary. If the vehicle ahead comes to a
stop, the vehicle decelerates to a stand-
still within the limitations of the system.

.

If the driver’s foot is on the accelerator

pedal, the system moves the accelerator
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 detec-

tion 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.

NOTE:

.

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.

Overriding the system:

The following driver’s operation overrides
the system operation.

.

When the driver depresses the accelera-

tor pedal even further while the system is
moving the accelerator pedal upward,
the DCA system control of the accel-
erator 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
inactive.

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 depres-
sing the brake pedal to maintain a safe
vehicle distance if:

.

The chime sounds.

.

The vehicle ahead detection indicator

blinks.

.

The driver assist system forward indica-

tor (orange) blinks.

The warning chime may not sound in some
cases when there is a short distance be-
tween vehicles. Some examples are:

.

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 vehicles
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.

NOTE:

The approach warning chime may sound
and the driver assist system forward in-
dicator (orange) may blink when the radar
sensor detects objects on the side of the
vehicle or on the side of the road. 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).

Starting and driving

5-95

5-96

Starting and driving

JVS0845X

Dynamic driver assistance switch
Driver assist system forward indicator
(green) (on the vehicle information dis-
play)
Lower display

TURNING THE DCA SYSTEM ON/
OFF

To turn on the DCA system, push the
dynamic driver assistance switch

on the

steering wheel after starting the engine. The
driver assistance switch indicator

in the

vehicle information display will appear. Push
the dynamic driver assistance switch

again

to turn off the DCA system. The driver
assistance switch indicator

will turn off.

The system will start to operate after the
vehicle speed is above approximately 3 MPH
(5 km/h).
The dynamic driver assistance switch

is

used for the DCA, Active Lane Control (if so
equipped), Lane Departure Prevention (LDP)
and Blind Spot Intervention (BSI) systems.
When the dynamic driver assistance switch

is pushed, Active Lane Control, LDP and

BSI systems will also turn on or off simulta-
neously. The DCA system can be individually
set to on or off on the lower display

. If the

system is set to off, the system will not turn
on even if the dynamic driver assistance
switch

is pushed to on. To set the system

to on or off on the display, see “How to
enable/disable the DCA system” (P.5-97).
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 “Intelligent
Cruise Control (ICC)” (P.5-71).
When the engine is turned off, the DCA
system is automatically turned off.

JVS0246X

HOW TO ENABLE/DISABLE THE
DCA SYSTEM

Perform the following steps to enable or
disable the DCA system.
1. Push the MENU button

and touch

[Driver Assistance] on the lower display.

2. Touch [Forward Assist].
3. Touch [Distance Control] to enable or

disable the system.

The displayed keys on the lower display may
vary depending on models, specifications
and software versions.

JVS0225X

DCA SYSTEM DISPLAY AND IN-
DICATORS

The display is located between the speed-
ometer and tachometer.
1. Driver assist system forward indicator

.

Driver assist system forward indicator

(green):
Indicates that the DCA system is ON.

.

Driver assist system forward indicator

(orange):
Indicates whether there is a malfunc-
tion in the DCA system.

2. Vehicle ahead detection indicator:

Indicates whether it detects a vehicle in

Starting and driving

5-97

5-98

Starting and driving

front of you.

DCA SYSTEM LIMITATIONS

WARNING

Listed below are the system limitations
of the DCA system. Failure to operate
the vehicle in accordance with these
system limitations could result in serious
injury or death.

.

This system will not adapt automati-
cally to road conditions. Do not use
the system on roads with sharp
curves, or on icy roads, in heavy rain
or in fog.

.

The DCA system will not apply brake
control while the driver’s foot is on
the accelerator pedal.

.

As there is a performance limit to the
distance control function, never rely
solely on the DCA system. This sys-
tem does not correct careless, inat-
tentive 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 surround-
ing circumstances in order to main-
tain a safe distance between vehicles.

.

The system may not detect the
vehicle in front of you in certain road
or weather conditions. To avoid ac-
cidents, 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 to

the system sensor

— On steep downhill roads (fre-

quent braking may result in over-
heating the brakes)

— On repeated uphill and downhill

roads

.

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 accel-
erator pedal. Always stay alert and
avoid using the DCA system when it
is not recommended in this section.

The radar sensor will not detect the follow-
ing 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

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 trunk room
of your vehicle

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 blink-
ing the system indicator and sounding the
chime. The driver may have to manually
control the proper distance away from
vehicle traveling ahead.

Starting and driving

5-99

5-100

Starting and driving

SSD0253

When driving on some roads, such as wind-
ing, 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 travel-
ing ahead. This may cause the system to
work inappropriately.
The detection of vehicles may also be
affected by vehicle operation (steering man-
euver 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 unexpect-
edly. You will have to manually control the
proper distance away from the vehicle
traveling ahead.

JVS0826X

Vehicle information display
Dynamic driver assistance switch

SYSTEM TEMPORARILY UNA-
VAILABLE

Condition A

Under the following conditions, the 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 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) system”
(P.5-128)

.

When the VDC or ABS (including the

traction control system) operates

.

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 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

Under the following conditions, making it
impossible to detect a vehicle ahead, the
DCA system is automatically 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.

.

When the radar sensor area of the front

bumper is covered with dirt or is ob-
structed

Action to take:

If the driver assist system forward indicator
(orange) and the warning message appear,
stop the vehicle in a safe place, place the
shift lever in the P (Park) position and 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.
It is recommended you visit an INFINITI
retailer for this service.

.

When driving on roads with limited road

structures or buildings (for example, long
bridges, deserts, snow fields, driving next
to long walls)

Action to take:

When the above conditions no longer exist,
the DCA system will resume automatically.

SYSTEM MALFUNCTION

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 information display.

Action to take:

If the driver assist system forward indicator
(orange) and the warning message appear,
stop the vehicle in a safe place and place the
shift lever in the P (Park) position. 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 con-
ditions, have the vehicle checked. It is
recommended you visit an INFINITI retailer
for this service.

SYSTEM 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 “Intelligent
Cruise Control (ICC)” (P.5-71).

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

Starting and driving

5-101

5-102

Starting and driving

2.

This device must accept any interfer-
ence received, including interference
that may cause undesired operation.

FCC Warning

Changes or modification not expressly ap-
proved by the party responsible for com-
pliance 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 device.

WARNING

Failure to follow the warnings and
instructions for proper use of the FEB
system could result in serious personal
injury or death.

.

The FEB system is a supplemental aid
to the driver. It is not a replacement
for the driver’s attention to traffic
conditions or responsibility to drive
safely. It cannot prevent accidents
due to carelessness or dangerous
driving techniques.

.

The FEB system does not function in
all driving, traffic, weather and road
conditions.

The FEB system can assist the driver when
there is a risk of a forward collision with the
vehicle ahead in the traveling lane.

JVS1123X

The FEB system uses a radar sensor
located behind the lower grille of the front
bumper to measure the distance to the
vehicle ahead in the same lane.

FORWARD EMERGENCY BRAKING (FEB)

JVS0846X

FEB system warning light (on the
instrument panel)
Indicators and warnings (on the vehicle
information display)

Driver assist system forward indica-

tor

Vehicle ahead detection indicator

Lower display

FEB SYSTEM OPERATION

The FEB system operates at speeds above
approximately 3 MPH (5 km/h).
If a risk of a forward collision is detected, the
FEB system will provide the first warning to
the driver by flashing the driver assist system
forward indicator (orange)

and the vehicle

ahead detection indicator (orange)

, and

providing an audible warning. In addition,
the FEB system pushes the accelerator
pedal up. If the driver releases the accel-
erator pedal, then the system applies partial
braking.
If the driver applies the brakes quickly and
forcefully after the warning, and the FEB
system detects that there is still the possi-
bility of a forward collision, the system will
automatically increase the braking force.
If a forward collision is imminent and the
driver does not take action, the FEB system
issues the second visual (red) and audible
warning and automatically applies harder
braking.

NOTE:

The vehicle’s stop lights come on when
braking is performed by the FEB system.

Depending on vehicle speed and distance to
the vehicle ahead, as well as driving and
roadway conditions, the system may help
the driver avoid a forward collision or may

Starting and driving

5-103

5-104

Starting and driving

help mitigate the consequences of a collision
should one be unavoidable.
If the driver is handling the steering wheel,
accelerating or braking, the FEB system will
function later or will not function.
The automatic braking will cease under the
following conditions:

.

When the steering wheel is turned as far

as necessary to avoid a collision.

.

When the accelerator pedal is depressed.

.

When there is no longer a vehicle de-

tected ahead.

If the FEB system has stopped the vehicle,
the vehicle will remain at a standstill for
approximately 2 seconds before the brakes
are released.

JVS0847X

FEB system warning light (on the
instrument panel)
Lower display
MENU button

TURNING THE FEB SYSTEM ON/
OFF

Perform the following steps to turn the FEB
system on or off.
1. Push the MENU button

and touch

[Driver Assistance] on the lower display

.

2. Touch [Emergency Assist].
3. Touch [Emergency Braking] to turn the

system ON/OFF.

When the FEB system is turned off, the FEB
system warning light (orange)

illuminates.

The FEB system will be automatically turned
ON when the engine is restarted.
The displayed keys on the lower display may
vary depending on models, specifications
and software versions.

NOTE:

The PFCW system is integrated into the
FEB system. There is not a separate selec-
tion in the display for the PFCW system.
When the FEB is turned off, the PFCW
system is also turned off.

FEB SYSTEM LIMITATIONS

WARNING

Listed below are the system limitations
for the FEB system. Failure to operate
the vehicle in accordance with these
system limitations could result in serious
injury or death.

.

The FEB system cannot detect all
vehicles under all conditions.

.

The radar sensor does not detect the
following objects:

— Pedestrians, animals or obstacles

in the roadway

— Oncoming vehicles

— Crossing vehicles

.

The radar sensor has some perfor-
mance limitations. If a stationary
vehicle is in the vehicle’s path, the
FEB system will not function when
the vehicle is driven at speeds over
approximately 45 MPH (70 km/h).

.

The radar sensor may not detect a
vehicle ahead in the following condi-
tions:

— Dirt, ice, snow or other material

covering the radar sensor.

— Interference by other radar

sources.

— Snow or road spray from travel-

ing vehicles.

— If the vehicle ahead is narrow (e.g.

motorcycle)

— When driving on a steep downhill

slope or roads with sharp curves.

.

In some road or traffic conditions, the
FEB system may unexpectedly push
the accelerator pedal up or apply
partial braking. When acceleration is
necessary, continue to depress the
accelerator pedal to override the
system.

.

The system is designed to automati-
cally check the sensor’s functionality,
within certain limitations. The system
may not detect some forms of ob-
struction of the sensor area such as
ice, snow, stickers, for example. In
these cases, the system may not be
able to warn the driver properly. Be
sure that you check, clean and clear
the sensor area regularly.

.

The FEB system may react to:

— objects on the roadside (traffic

sign, guardrail, vehicle, etc.)

Starting and driving

5-105

5-106

Starting and driving

— objects above road (low bridge,

traffic sign, etc.)

— objects on the road surface (rail-

road track, grate, steel plate, etc.)

— objects in the parking garage

(beam, etc.)

— vehicles or objects in adjacent

lane or close to the vehicle

.

Braking distances increase on slip-
pery surfaces.

.

Excessive noise will interfere with the
warning chime sound, and the chime
may not be heard.

SSD0253

When driving on some roads, such as wind-
ing, hilly, curved, narrow roads, or roads
which are under construction, the radar
sensor may detect vehicles in a different
lane, or may temporarily not detect a vehicle
traveling ahead. This may cause the FEB
system to work inappropriately.
The detection of vehicles may also be
affected by vehicle operation (steering man-
euver 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 unexpect-
edly. You will have to manually control the
proper distance away from the vehicle
traveling ahead.

JVS0848X

FEB system warning light (on the
instrument panel)
Driver assist system forward indicator
(on the vehicle information display)

SYSTEM TEMPORARILY UNA-
VAILABLE

Condition A

When the radar sensor picks up interference
from another radar source, making it im-
possible to detect a vehicle ahead, the FEB
system is automatically turned off. The FEB
system warning light (orange)

and the

driver assist system forward indicator (or-
ange)

will illuminate.

Action to take:

When the above conditions no longer exist,
the FEB system will resume automatically.

Condition B

Under the following conditions, making it
impossible to detect a vehicle ahead, the
FEB system is automatically turned off.
The FEB system warning light (orange)
and the driver assist system forward indi-
cator (orange)

will illuminate and the

“front radar obstruction” warning message
will appear in the vehicle information display.

.

When the sensor area of the front

bumper is covered with dirt or is ob-
structed

Starting and driving

5-107

5-108

Starting and driving

Action to take:

If the FEB system warning light (orange)
comes on, stop the vehicle in a safe place,
place the shift lever in the P (Park) position
and turn the engine off. Clean the radar
cover on lower grille with a soft cloth, and
restart the engine. If the FEB system warn-
ing light continues to illuminate, have the
FEB system checked. It is recommended you
visit an INFINITI retailer for this service.

.

When driving on roads with limited road

structures or buildings (for example, long
bridges, deserts, snow fields, driving next
to long walls)

Action to take:

When the above conditions no longer exist,
the FEB system will resume automatically.

Condition C

When the accelerator pedal actuator detects
that the internal motor temperature is high,
the FEB system is automatically turned off.
The FEB system warning light (orange)
and the driver assist system forward indi-
cator (orange)

will illuminate and the

“Unavailable High Accelerator Temperature”
warning message will appear in the vehicle
information display.

Action to take:

When the above conditions no longer exist,
the FEB system will resume automatically.

SYSTEM MALFUNCTION

If the FEB system malfunctions, it will be
turned off automatically, a chime will sound,
the FEB system warning light (orange)
and the driver assist system forward indi-
cator (orange)

will illuminate and the

system “malfunction” warning message will
appear in the vehicle information display.

Action to take:

If the FEB system warning light (orange)
comes on, 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 warning light continues to
illuminate, have the FEB system checked. It
is recommended you visit an INFINITI re-
tailer for this service.

JVS1123X

SYSTEM MAINTENANCE

The sensor

is located behind the lower

grille of the front bumper.
To keep the system operating properly, be
sure to observe the following:

.

Always keep the sensor area of the front

bumper clean.

.

Do not strike or damage the areas around

the sensor.

.

Do not cover or attach stickers or similar

objects on the front bumper near the
sensor area. This could cause failure or
malfunction.

.

Do not attach metallic objects near the

sensor area (brush guard, etc.). This

could cause failure or malfunction.

.

Do not alter, remove or paint the front

bumper. It is recommended you contact
an INFINITI retailer before customizing
or restoring the front bumper.

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 ap-
proved by the party responsible for com-
pliance 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 device.

WARNING

Failure to follow the warnings and
instructions for proper use of the PFCW
system could result in serious injury or
death.

.

The PFCW system helps warn the
driver before a collision but will not
avoid a collision. It is the driver’s
responsibility to stay alert, drive
safely and be in control of the vehicle
at all times.

The PFCW system can help alert the driver
when there is a sudden braking of a second
vehicle traveling in front of the vehicle ahead
in the same lane.

JVS1123X

The PFCW system uses a radar sensor
located behind the lower grille of the front
bumper to measure the distance to a second
vehicle ahead in the same lane.

Starting and driving

5-109

PREDICTIVE FORWARD
COLLISION WARNING (PFCW)