stop start INFINITI QX80 2023 Service Manual

5-86Starting and driving
ahead or when a vehicle suddenly
appears in front of you. Always stay
alert when using the DCA system.
. If the vehicle ahead comes to a stop,
the vehicle decelerates to a standstill
within the limitations of the system.
The system will cancel with a warning
chime once it judges that the vehicle
has come to a standstill. To prevent
the vehicle from moving, the driver
must depress the brake pedal.
JVS1154X
The DCA system is intended to assist the
driver in keeping a following distance from
the vehicle ahead traveling in the same lane
and direction.
If the radar sensor
detects 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 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.

WAF0917X
DCA ON indicator (on the vehicle
information display)
Vehicle ahead detection indicator (on
the vehicle information display)
Vehicle information display
Dynamic driver assistance switch
DCA SYSTEM OPERATION
WARNING
Failure to follow the warnings and
instructions for proper use of the DCA
system could result in serious personal
injury or death.
.When the vehicle ahead detection
indicator is not illuminated, system
will not control the vehicle or warn
the driver.
. Never place your foot under the
brake pedal. Your foot may be caught
when the system controls the brake.
. Depending on the position of the
accelerator pedal, the system may
not be able to assist the driver to
release the accelerator pedal appro-
priately.
The 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 in
maintaining a following distance. The sys-
tem 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-
Starting and driving5-87

5-88Starting and driving
mately 40% of the vehicle’s 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.5-89).
WAF0348X
System set display without a vehicle
ahead
System set display with 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 (green)
comes on. 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 (orange). 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 and/or vibration may be felt. 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
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 depres-
sing the brake pedal to maintain a safe
vehicle distance if:
. The chime sounds.
. The vehicle ahead detection indicator
(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 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 system display 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 driving5-89

5-94Starting and driving
turn on the DCA system again.
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 DCA system
indicator (orange) will come on and the
“Forward Driving Aids temporarily disabled
Front Sensor blocked See Owner’s Manual”
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 DCA system indicator (orange) comes
on and the warning message appears, 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 tem-
porarily interrupted, clean the sensor area of
the front bumper and restart the engine. If
the warning message continues to be dis-
played, 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,
turn the DCA system back on to use the
system.
SYSTEM MALFUNCTION
Condition:
When the DCA system is not operating
properly, the chime sounds and the system
warning message “Malfunction” will appear.
Action to take:
If the warning message appears, 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 con-
ditions, have the vehicle checked. It is
recommended you visit an INFINITI retailer
for this service.
JVS1154X
SYSTEM MAINTENANCE
The sensor for the DCA systemis located
behind the grille of the front bumper.
The DCA system is designed to automati-
cally check the sensor’s operation. When the
sensor is covered with dirt or is obstructed,
the system will automatically be canceled. If
the sensor 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 regularly.

applies harder braking automatically.
While the FEB with Pedestrian Detection
system is operating, you may hear the sound
of brake operation. This is normal and
indicates that the FEB with Pedestrian
Detection system is operating properly.
NOTE:
The vehicle’s stop lights come on when
braking is performed by the FEB with
Pedestrian Detection system.
Depending on vehicle speed and distance to
the vehicle or pedestrian ahead, as well as
driving and roadway conditions, the system
may help the driver avoid a forward collision
or may help mitigate the consequences of a
collision should one be unavoidable.
If the driver is handling the steering wheel,
accelerating or braking, the FEB with Pe-
destrian Detection 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,
pedestrian detected ahead.
If the FEB with Pedestrian Detection system
has stopped the vehicle, the vehicle will
remain at a standstill for approximately 2 seconds before the brakes are released.
When the brake pedal is depressed while the
brake is applied by the system, you may feel
the pedal effort is changed and may hear a
sound and vibration noise. This is normal and
does not indicate a malfunction. In addition,
the braking force can be increased by adding
the pedal effort.
Starting and driving5-97

.When the sensor area of the front
bumper is covered with dirt or is ob-
structed
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 below the front bumper with a soft
cloth, and restart the engine. If the FEB
system warning light continues to illuminate,
have the FEB with Pedestrian Detection
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 with Pedestrian Detection system
will resume automatically.
Condition D
When the accelerator pedal actuator detects
that the internal motor temperature is high,
the FEB with Pedestrian Detection system is
automatically turned off. The FEB system
warning light (orange) will illuminate.
Action to take: When the above conditions no longer exist,
the FEB with Pedestrian Detection system
will resume automatically.
Condition E
When VDC system is OFF, the FEB brake
will not operate. In this case only visible and
audible warning operates. The FEB system
warning light (orange) will illuminate.
Action to take:
When VDC system is ON, the FEB with
Pedestrian Detection system will resume
automatically.
SYSTEM MALFUNCTION
If the FEB with Pedestrian Detection system
malfunctions, it will be turned off automa-
tically, a chime will sound, the FEB system
warning light will (orange) will illuminate and
the “Malfunction” warning message will
appear in the vehicle information display.
Action to take:
If the warning light (orange) comes on, stop
the vehicle in a safe location. Turn the engine
off and restart the engine. If the warning
light continues to illuminate, have the FEB
with Pedestrian Detection system checked.
It is recommended that you visit an INFINITI
retailer for this service.
JVS1158X
SYSTEM MAINTENANCE
The radar sensoris located on the front of
the vehicle. The camerais located on the
upper side of the windshield.
To keep the FEB with Pedestrian Detection
system operating properly, be sure to ob-
serve the following:
. Always keep the sensor area on the front
of the vehicle and windshield clean.
. Do not strike or damage the areas around
the sensors (ex. bumper, windshield).
. Do not cover or attach stickers or similar
objects on the front of the vehicle near
the sensor area. This could cause failure
or malfunction.
Starting and driving5-103

Condition B
Under the following conditions, making it
impossible to detect a vehicle ahead, the
PFCW system is automatically turned off.
The FEB system warning light (orange) will
illuminate and the “Forward Driving Aids
temporarily disabled Front Sensor blocked
See Owner’s Manual” warning message will
appear in the vehicle information display.
.When the sensor area of the front of the
vehicle is covered with dirt or is ob-
structed
Action to take:
If the warning light (orange) flashes, stop the
vehicle in a safe place, push the park button
to engage the P (Park) position and turn the
engine off. Clean the radar cover on the
front of the vehicle with a soft cloth, and
restart the engine. If the warning light
continues to illuminate, have the PFCW
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 PFCW system will resume automatically.
SYSTEM MALFUNCTION
If the PFCW system malfunctions, it will be
turned off automatically, a chime will sound,
the FEB system warning light (orange) will
illuminate and the "Malfunction" warning
message will appear in the vehicle informa-
tion display.
Action to take:
If the warning light (orange) illuminates, stop
the vehicle in a safe location. Turn the engine
off and restart the engine. If the warning
light continues to illuminate, have the PFCW
system checked. It is recommended you visit
an INFINITI retailer for this service.
JVS1154X
SYSTEM MAINTENANCE
The radar sensoris located on the front of
the vehicle.
To keep the system operating properly, be
sure to observe the following:
. Always keep the sensor area on the front
of the vehicle 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
Starting and driving5-111

5-114Starting and driving
play. Use thebutton to select “Driver
Assistance.” Then push the OK button.
2. Select “Driver Attention Alert” and push the OK button to turn the system on or
off.
NOTE:
The setting will be retained even if the
engine is restarted.
DAA SYSTEM LIMITATIONS
WARNING
Listed below are the system limitations
for the DAA system. Failure to operate
the vehicle in accordance with these
system limitations could result in serious
injury or death.
. The DAA system may not operate
properly and may not provide an alert
in the following conditions:
— Poor road conditions such as an uneven road surface or pot holes.
— Strong side wind.
— If you have adopted a sporty driving style with higher cornering
speeds or higher rates of accel-
eration. — Frequent lane changes or changes
to vehicle speed.
. The DAA system will not provide an
alert in the following conditions:
— Vehicle speeds lower than 37 MPH (60 km/h).
— Short lapses of attention.
— Instantaneous distractions such as dropping an object.
SYSTEM MALFUNCTION
If the DAA system malfunctions, the “Driver
Attention Alert Malfunction” warning mes-
sage will appear in the vehicle information
display and the function will be stopped
automatically.
Action to take
Stop the vehicle in a safe location, place the
vehicle in P (Park) position, turn the engine
off and restart the engine. If the warning
message continues to appear, have the
system checked. It is recommended that
you visit an INFINITI retailer for this service.
CAUTION
During the first 1,200 miles (2,000 km),
follow these recommendations to obtain
maximum engine performance and en-
sure the future reliability and economy
of your new vehicle.
Failure to follow these recommendations
may result in shortened engine life and
reduced engine performance.
. Avoid driving for long periods at constant
speed, either fast or slow. Do not run the
engine over 4,000 rpm.
. Do not accelerate at full throttle in any
gear.
. Avoid quick starts.
. Avoid hard braking as much as possible.
. Do not tow a trailer for the first 500
miles (805 km).
BREAK-IN SCHEDULE

Follow these easy-to-use Fuel Efficient
Driving Tips to help you achieve the most
fuel economy from your vehicle.
1. Use smooth accelerator and brake pedalapplication.
.Avoid rapid starts and stops..Use smooth, gentle accelerator andbrake application whenever possible.
.Maintain constant speed while com-muting and coast whenever possible.
2. Maintain constant speed.
.Look ahead to try and anticipate and minimize stops.
.Synchronizing your speed with traffic
lights allows you to reduce your
number of stops.
.Maintaining a steady speed can mini-mize red light stops and improve fuel
efficiency.
3. Use air conditioning (A/C) at higher vehicle speeds.
.Below 40 MPH (64 km/h), it is moreefficient to open windows to cool the
vehicle due to reduced engine load.
.Above 40 MPH (64 km/h), it is moreefficient to use A/C to cool the
vehicle due to increased aerodynamic
drag.
.Recirculating the cool air in the cabinwhen the A/C is on reduces cooling
load. 4. Drive at economical speeds and dis-
tances.
.Observing the speed limit and notexceeding 60 MPH (97 km/h) (where
legally allowed) can improve fuel
efficiency due to reduced aerody-
namic drag.
.Maintaining a safe following distance
behind other vehicles reduces unne-
cessary braking.
.Safely monitoring traffic to anticipatechanges in speed permits reduced
braking and smooth acceleration
changes.
.Select a gear range suitable to roadconditions.
5. Use cruise control.
.Using cruise control during highway driving helps maintain a steady speed.
.Cruise control is particularly effectivein providing fuel savings when driving
on flat terrains.
6. Plan for the shortest route.
.Utilize a map or navigation system to determine the best route to save time.
7. Avoid idling.
.Shutting off your engine when safe for stops exceeding 30-60 seconds
saves fuel and reduces emissions. 8. Buy an automated pass for toll roads.
.Automated passes permit drivers to
use special lanes to maintain cruising
speed through the toll and avoid
stopping and starting.
9. Winter warm up.
.Limit idling time to minimize impact to fuel economy.
.Vehicles typically need no more than30 seconds of idling at start-up to
effectively circulate the engine oil
before driving.
.Your vehicle will reach its ideal oper-ating temperature more quickly while
driving versus idling.
10. Keeping your vehicle cool.
.Park your vehicle in a covered parking area or in the shade whenever possi-
ble.
.When entering a hot vehicle, openingthe windows will help to reduce the
inside temperature faster, resulting in
reduced demand on your A/C system.
Starting and driving5-115
FUEL EFFICIENT DRIVING TIPS