brakes NISSAN ARMADA 2020 Owner´s Manual

5-86Starting and driving
.The I-DC system automatically
decelerates your vehicle to help
assist the driver to maintain a
following distance from the vehi-
cle ahead. Manually brake when
deceleration is required to main-
tain 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 I-DC system.
. If the vehicle ahead comes to a
stop, the vehicle decelerates to a
standstill within the limitations of
the system. The system will can-
cel 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.
JVS0913X
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
detects a slower
moving vehicle ahead, the system will
reduce the vehicle speed to help assist
the driver to maintain a following dis-
tance.
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.

JVS1100X
Indicators (on the vehicle information
display)
Dynamic driver assistance switchCenter multi-function control panel
I-DC SYSTEM OPERATION
WARNING
Failure to follow the warnings and
instructions for proper use of the I-
DC system could result in seriouspersonal injury or death.
.
When the vehicle ahead detection
indicator light is not illuminated,
system will not control the vehi-
cle 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 appropriately.
The I-DC 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 system will decelerate as necessary
and if the vehicle ahead comes to a stop,
the vehicle decelerates to a standstill.
However, the I-DC system can only apply
up to approximately 40% of the vehicle’s
total braking power. If a vehicle moves
into the traveling lane ahead or if a
vehicle traveling ahead rapidly decele-
rates, the distance between vehicles
may become closer because the I-DC
system cannot decelerate the vehicle
Starting and driving5-87

5-88Starting and driving
quickly enough. If this occurs, the I-DC
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).
SSD0997
System set display with a vehicle aheadSystem set display without a vehicle
ahead
The I-DC system helps assist the driver to
keep a following distance to the vehicle
ahead by braking and moving the accel-
erator pedal upward in the normal driving
condition.
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 acti-
vates 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 accel-
erator 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 warn-
ing, the system moves the accelerator
pedal upward to assist the driver to

5-92Starting and driving
I-DC SYSTEM LIMITATIONS
WARNING
Listed below are the system limita-
tions of the I-DC system. Failure to
operate the vehicle in accordance
with these system limitations could
result in serious injury or death.
.This system will not adapt auto-
matically to road conditions. Do
not use the system on roads with
sharp curves, or on icy roads, in
heavy rain or in fog.
. The I-DC 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 I-DC
system. This system does not
correct careless, inattentive or
absent-minded driving, or over-
come 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 circum-
stances 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 I-
DC system under the following
conditions:
— On roads with sharp curves
— On slippery road surfaces
such as on ice or snow, etc.
— On off-road surfaces such as on sand or rock, 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
overheating the brakes)
— On repeated uphill and down- hill roads
— When towing a trailer or other vehicle
. In some road or traffic conditions,
a vehicle or object can unexpect-
edly come into the sensor detec-
tion zone and cause automatic
braking. You may need to control
the distance from other vehicles
using the accelerator pedal. Al- ways stay alert and avoid using
the I-DC system when it is not
recommended in this section.
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
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

5-100Starting and driving
vehicle information display and providing
an audible warning. In addition, the AEB
system pushes the accelerator pedal up.
If the driver releases the accelerator
pedal, then the system applies partial
braking.
If the driver applies the brakes quickly and
forcefully after the warning, and the AEB
system detects that there is still the
possibility 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 AEB
system issues the second visual (flashing)
and audible warning and automatically
applies harder braking.
NOTE:
The vehicle’s stop lights come on when
braking is performed by the AEB sys-
tem.
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 help mitigate the consequences of a
collision should one be unavoidable.
If the driver is handling the steering
wheel, accelerating or braking, the AEB
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 de-
pressed.
. When there is no longer a vehicle
detected ahead.
If the AEB system has stopped the vehicle,
the vehicle will remain at a standstill for
approximately 2 seconds before the
brakes are released.

5-124Starting and driving
WARNING
.Never rely solely on the hill start
assist system to prevent the ve-
hicle from moving backward on a
hill. Always drive carefully and
attentively. Depress the brake
pedal when the vehicle is stopped
on a steep hill. Be especially care-
ful when stopped on a hill on
frozen or muddy roads. Failure
to prevent the vehicle from rolling
backwards may result in a loss of
control of the vehicle and possi-
ble serious injury or death.
. The hill start assist system is not
designed to hold the vehicle at a
standstill on a hill. Depress the
brake pedal when the vehicle is
stopped on a steep hill. Failure to
do so may cause the vehicle to
roll backwards and may result in
a collision or serious personal
injury.
. The hill start assist system may
not prevent the vehicle from roll-
ing backwards on a hill under all
load or road conditions. Always
be prepared to depress the brake
pedal to prevent the vehicle from
rolling backwards. Failure to do so may result in a collision or
serious personal injury.
The hill start assist system automatically
keeps the brakes applied to help prevent
the vehicle from rolling backwards in the
time it takes the driver to release the
brake pedal and apply the accelerator
when the vehicle is stopped on a hill.
The hill start assist system will operate
automatically under the following condi-
tions:
. The transmission is shifted to a for-
ward or reverse gear.
. The vehicle is stopped completely on a
hill by applying the brake.
The maximum holding time is 2 seconds.
After 2 seconds the vehicle will begin to
roll back and the hill start assist system
will stop operating completely.
The hill start assist system will not
operate when the transmission is shifted
to the N (Neutral) or P (Park) position or
on a flat and level road.
When the Vehicle Dynamic Control (VDC)
warning light illuminates in the meter, the
hill start assist system will not operate.
(See “Warning lights, indicator lights and
audible reminders” (P.2-10).)
HILL START ASSIST SYSTEM

5-130Starting and driving
the Sonar settings on the center display.
(See “Sonar settings” (P.5-128).) When the
sonar indicator is off, only a tone sounds
when the sonar detect obstacles.
WARNING
If the engine is not running or is
turned off while driving, the power
assist for the steering will not work.
Steering will be harder to operate.
The power assisted steering uses a hy-
draulic pump, driven by the engine, to
assist steering.
If the engine stops or the drive belt
breaks, you will still have control of the
vehicle. However, much greater steering
effort is needed, especially in sharp turns
and at low speeds.
BRAKING PRECAUTIONS
The brake system has two separate
hydraulic circuits. If one circuit malfunc-
tions, you will still have braking ability at
two wheels.
You may feel a small click and hear a
sound when the brake pedal is fully
depressed slowly. This is not a malfunc-
tion and indicates that the brake assist
mechanism is operating properly.
Hydraulically-assisted brakes
The hydraulically-assisted brake system is
designed to use a hydraulic pump driven
electrically, to assist braking. If the engine
stops, you can stop the vehicle by de-
pressing the foot brake pedal. However,
greater foot pressure on the foot brake
pedal will be required to stop the vehicle.
The stopping distance will be longer.
Wet brakes
When the vehicle is washed or driven
through water, the brakes may get wet.
As a result, your braking distance will be
longer and the vehicle may pull to one
side during braking.
To dry brakes, drive the vehicle at a safe
speed while lightly tapping the brake
pedal to heat-up the brakes. Do this until
the brakes return to normal. Avoid driving
the vehicle at high speeds until the brakes
POWER STEERING BRAKE SYSTEM

function correctly.
PARKING BRAKE BREAK-IN
Break in the parking brake shoes when-
ever the stopping effect of the parking
brake is weakened or whenever the
parking brake shoes and/or drums/ro-
tors are replaced, in order to assure the
best braking performance.
This procedure is described in the vehicle
service manual. It is recommended you
visit a NISSAN dealer for this service.
Using the brakes
Avoid resting your foot on the brake
pedal while driving. This will cause over-
heating of the brakes, wearing out the
brake and pads faster and reduce gas
mileage.
To help save the brakes and to prevent
the brakes from overheating, reduce
speed and downshift to a lower gear
before going down a slope or long grade.
Overheated brakes may reduce braking
performance and could result in loss of
vehicle control.
WARNING
.While driving on a slippery sur-
face, be careful when braking,
accelerating or downshifting. Abrupt braking or accelerating
could cause the wheels to skid
and result in an accident.
. If the engine is not running or is
turned off while driving, the
power assist for the brakes will
not work. Braking will be harder.
BRAKE ASSIST
When the force applied to the brake pedal
exceeds a certain level, the Brake Assist is
activated generating greater braking
force than a conventional brake booster
even with light pedal force.
WARNING
The Brake Assist is only an aid to
assist braking operation and is not a
collision warning or avoidance de-
vice. It is the driver’s responsibility to
stay alert, drive safely and be in
control of the vehicle at all times.
ANTI-LOCK BRAKING SYSTEM (ABS)
WARNING
.The Anti-lock Braking System
(ABS) is a sophisticated device,
but it cannot prevent accidents
resulting from careless or dan-
gerous driving techniques. It can
help maintain vehicle control dur-
ing braking on slippery surfaces.
Remember that stopping dis-
tances on slippery surfaces will
be longer than on normal sur-
Starting and driving5-131
BRAKE ASSIST

5-132Starting and driving
faces even with ABS. Stopping
distances may also be longer on
rough, gravel or snow covered
roads, or if you are using tire
chains. Always maintain a safe
distance from the vehicle in front
of you. Ultimately, the driver is
responsible for safety.
. Tire type and condition may also
affect braking effectiveness.
— When replacing tires, install
the specified size of tires on
all four wheels.
— When installing a spare tire, make sure that it is the proper
size and type as specified on
the Tire and Loading Informa-
tion label. See “Tire and load-
ing information label” (P.10-
12).
— For detailed information, see “Wheels and tires” (P.8-30).
The Anti-lock Braking System (ABS) con-
trols the brakes so the wheels do not lock
during hard braking or when braking on
slippery surfaces. The system detects the
rotation speed at each wheel and varies
the brake fluid pressure to prevent each
wheel from locking and sliding. By pre-
venting each wheel from locking, the system helps the driver maintain steering
control and helps to minimize swerving
and spinning on slippery surfaces.
Using the system
Depress the brake pedal and hold it down.
Depress the brake pedal with firm steady
pressure, but do not pump the brakes.
The ABS will operate to prevent the
wheels from locking up. Steer the vehicle
to avoid obstacles.
WARNING
Do not pump the brake pedal. Doing
so may result in increased stopping
distances.
Self-test feature
The ABS includes electronic sensors, elec-
tric pumps, hydraulic solenoids and a
computer. The computer has a built-in
diagnostic feature that tests the system
each time you start the engine and move
the vehicle at a low speed in forward or
reverse. When the self-test occurs, you
may hear a “clunk” noise and/or feel a
pulsation in the brake pedal. This is
normal and does not indicate a malfunc-
tion. If the computer senses a malfunc-
tion, it switches the ABS off and
illuminates the ABS warning light on the
instrument panel. The brake system then
operates normally, but without anti-lock
assistance.
If the ABS warning light illuminates during
the self-test or while driving, have the
vehicle checked. It is recommended you
visit a NISSAN dealer for this service.
Normal operation
The ABS operates at speeds above 3 to 6
MPH (5 to 10 km/h). The speed varies
according to road conditions.
When the ABS senses that one or more
wheels are close to locking up, the
actuator rapidly applies and releases
hydraulic pressure. This action is similar
to pumping the brakes very quickly. You
may feel a pulsation in the brake pedal
and hear a noise from under the hood or
feel a vibration from the actuator when it
is operating. This is normal and indicates
that the ABS is operating properly. How-
ever, the pulsation may indicate that road
conditions are hazardous and extra care
is required while driving.

8 Do-it-yourself
Maintenance precautions ...................................................... 8-2
Engine compartment check locations ........................ 8-3VK56VD engine ....................................................................... 8-3
Engine cooling system ............................................................. 8-4 Checking engine coolant level .................................... 8-5
Changing engine coolant ................................................ 8-5
Engine oil ........................................................................\
..................... 8-6 Checking engine oil level ................................................. 8-6
Changing engine oil and filter ..................................... 8-6
Automatic Transmission Fluid (ATF) ............................. 8-8
Power steering fluid ................................................................... 8-8
Brake fluid ........................................................................\
.................. 8-9
Window washer fluid .............................................................. 8-10
Battery ........................................................................\
........................ 8-11 Jump starting ........................................................................\
. 8-13
Variable voltage control system ................................... 8-13
Drive belts ........................................................................\
................ 8-13
Spark plugs ........................................................................\
............. 8-14 Replacing spark plugs ..................................................... 8-14
Air cleaner ........................................................................\
............... 8-15 Windshield wiper blades ..................................................... 8-16
Cleaning ........................................................................\
........... 8-16
Replacing ........................................................................\
........ 8-16
Rear window wiper blades ............................................... 8-17
Brakes ........................................................................\
........................ 8-17 Self-adjusting brakes ..................................................... 8-17
Brake pad wear warning ............................................ 8-17
Brake booster ...................................................................... 8-17
Fuses ........................................................................\
........................... 8-18 Engine compartment .................................................... 8-18
Passenger compartment ........................................... 8-20
Intelligent Key battery replacement .......................... 8-21
Lights ........................................................................\
.......................... 8-24
Headlights ........................................................................\
...... 8-24
Exterior and interior lights ........................................ 8-26
Wheels and tires ........................................................................\
8-30
Tire pressure ........................................................................\
8-30
Tire labeling ........................................................................\
.. 8-34
Types of tires ....................................................................... 8-36
Tire chains ........................................................................\
...... 8-37
Changing wheels and tires ...................................... 8-37