2021 NISSAN ARMADA check engine

— When driving on a steep hill.
SYSTEM TEMPORARILY UNAVAIL-
ABLE
When sonar blockage is detected, the
system will be deactivated automatically.
The system is not available until the
conditions no longer exist.
The sonar sensors may be blocked by
temporary ambient conditions such as
splashing water, mist or fog. The blocked
condition may also be caused by objects
such as ice, frost or dirt obstructing the
sonar sensors.
Action to take:
When the above conditions no longer
exist, the system will resume automati-
cally.
SYSTEM MAINTENANCE
The sonar sensors are located on the
front and rear bumpers. (See “Exterior
front” (P.0-3) and “Exterior rear” (P.0-4).)
.Always keep the area near the sonar
sensors clean.
. If the sonar sensors are dirty, wipe
them off with a soft cloth while being
careful to not damage them.
. The sonar sensors may be blocked by
temporary ambient conditions such as splashing water, mist or fog. The
blocked condition may also be caused
by objects such as ice, frost or dirt
obstructing the sonar sensors. Check
for and remove objects obstructing
the area around the sonar sensors.
. Do not subject the area around the
sonar sensors to strong impact. Also,
do not remove or disassemble the
sonar sensors. If the sonar sensors
and peripheral areas are deformed in
an accident, etc., have the sonar
sensors checked by a NISSAN dealer.
. Do not attach stickers (including
transparent material), install acces-
sories or apply additional paint on
the sonar sensors and their surround-
ing areas. This may cause a malfunc-
tion or improper operation.
. When washing the vehicle using a
high-pressure washer, do not apply
direct washer pressure on the sonar
sensors. This may cause a malfunction
of the sonar sensors.
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.
Starting and driving5-141
POWER STEERING

5-144Starting and driving
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.The Vehicle Dynamic Control (VDC) sys-
tem uses various sensors to monitor
driver inputs and vehicle motion. Under
certain driving conditions, the VDC sys-
tem helps to perform the following func-
tions.
.
Controls brake pressure to reduce
wheel slip on one slipping drive wheel
so power is transferred to a non
slipping drive wheel on the same axle.
. Controls brake pressure and engine
output to reduce drive wheel slip
based on vehicle speed (traction con-
trol function).
. Controls brake pressure at individual
wheels and engine output to help the
driver maintain control of the vehicle
in the following conditions:
— understeer (vehicle tends to not
follow the steered path despite
increased steering input)
— oversteer (vehicle tends to spin due to certain road or driving condi-
tions).
The VDC system can help the driver to
maintain control of the vehicle, but it
cannot prevent loss of vehicle control in
all driving situations.
When the VDC system operates, the VDC
warning light
in the instrument panel
flashes so note the following: .
The road may be slippery or the
system may determine some action
is required to help keep the vehicle on
the steered path.
. You may feel a pulsation in the brake
pedal and hear a noise or vibration
from under the hood. This is normal
and indicates that the VDC system is
working properly.
. Adjust your speed and driving to the
road conditions.
If a malfunction occurs in the system, the
VDC warning light
illuminates in the
instrument panel. The VDC system auto-
matically turns off.
The VDC OFF switch is used to turn off the
VDC system. The VDC off indicator
illuminates to indicate the VDC system is
off. When the VDC switch is used to turn
off the system, the VDC system still
operates to prevent one drive wheel from
slipping by transferring power to a non
slipping drive wheel. The VDC warning
light
flashes if this occurs. All other
VDC functions are off, and the VDC
warning light
will not flash. The VDC
system is automatically reset to on when
the ignition switch is placed in the OFF
position then back to the ON position.
When the 4L position is selected with the
4WD shift switch, the VDC system is
disabled and the VDC off indicator light
VEHICLE DYNAMIC CONTROL (VDC) SYSTEM

5-146Starting and driving
SIC4455
VEHICLE DYNAMIC CONTROL (VDC)
OFF SWITCH
The vehicle should be driven with the
Vehicle Dynamic Control (VDC) system ON
for most driving conditions.
When the vehicle is stuck in mud or snow,
the VDC system reduces the engine out-
put to reduce wheel spin. The engine
speed will be reduced even if the accel-
erator is depressed to the floor. If max-
imum engine power is needed to free a
stuck vehicle, turn the VDC system off.
To turn off the Vehicle Dynamic Control
(VDC) system, push the VDC OFF switch.
The VDC off indicator light
will
illuminate. Push the VDC OFF switch again or restart
the engine to turn ON the system.
FREEING A FROZEN DOOR LOCK
To prevent a door lock from freezing,
apply deicer through the key hole. If the
lock becomes frozen, heat the key before
inserting it into the key hole or use the
Intelligent Key system.
ANTIFREEZE
In the winter when it is anticipated that
the outside temperature will drop below
32°F (0°C), check antifreeze to assure
proper winter protection. For additional
information, see “Engine cooling system”
(P.8-4).
BATTERY
If the battery is not fully charged during
extremely cold weather conditions, the
battery fluid may freeze and damage the
battery. To maintain maximum efficiency,
the battery should be checked regularly.
For additional information, see “Battery”
(P.8-11).
DRAINING OF COOLANT WATER
If the vehicle is to be left outside without
antifreeze, drain the cooling system, in-
cluding the engine block. Refill before
operating the vehicle. For details, see
“Engine cooling system” (P.8-4).
COLD WEATHER DRIVING

To shut off the engine in an emergency
situation while driving, perform the fol-
lowing procedure:
.Rapidly push the push-button ignition
switch 3 consecutive times in less
than 1.5 seconds, or
. Push and hold the push-button igni-
tion switch for more than 2 seconds.TIRE PRESSURE MONITORING SYS-
TEM (TPMS)
This vehicle is equipped with the Tire
Pressure Monitoring System (TPMS). It
monitors tire pressure of all tires except
the spare. When the low tire pressure
warning light is lit and the “Tire Pressure
Low Add Air” warning appears in the
vehicle information display, one or more
of your tires is significantly under-inflated.
If the vehicle is being driven with low tire
pressure, the TPMS will activate and warn
you of it by the low tire pressure warning
light. This system will activate only when
the vehicle is driven at speeds above 16
MPH (25 km/h). For more details, see “Low
tire pressure warning light” (P.2-15) and
“Tire Pressure Monitoring System (TPMS)”
(P.5-5).
WARNING
.If the low tire pressure warning
light illuminates or Low Pressure
information is displayed on the
monitor screen while driving,
avoid sudden steering maneu-
vers or abrupt braking, reduce
vehicle speed, pull off the road
to a safe location and stop the
vehicle as soon as possible. Driv-
ing with under-inflated tires may permanently damage the tires
and increase the likelihood of tire
failure. Serious vehicle damage
could occur and may lead to an
accident and could result in ser-
ious personal injury. Check the
tire pressure for all four tires.
Adjust the tire pressure to the
recommended COLD tire pressure
shown on the Tire and Loading
Information label to turn the low
tire pressure warning light OFF. If
the light still illuminates while
driving after adjusting the tire
pressure, a tire may be flat. If
you have a flat tire, replace it with
a spare tire as soon as possible.
. Since the spare tire is not
equipped with the TPMS, when a
spare tire is mounted or a wheel
is replaced, the TPMS will not
function and the low tire pressure
warning light will flash for ap-
proximately 1 minute. The light
will remain on after 1 minute.
Have your tires replaced and/or
TPMS system reset as soon as
possible. It is recommended you
visit a NISSAN dealer for these
services.
. Replacing tires with those not
originally specified by NISSAN
In case of emergency6-3
EMERGENCY ENGINE SHUT OFF FLAT TIRE

WAG0119X
WARNING
Always follow the instructions below.
Failure to do so could result in
damage to the charging system and
cause personal injury.
1. Remove the engine compartment cover, if necessary. See “Engine com-
partment check locations” (P.8-3).
2. If the booster battery is in another vehicle
, position the two vehicles (and) to bring their batteries into
close proximity to each other. Do not allow the two vehicles to
touch.
3. Apply parking brake. Move the shift lever to the P (Park) position. Switch
off all unnecessary electrical systems
(light, heater, air conditioner, etc.).
4. Remove vent caps on the battery (if so equipped). Cover the battery with a
firmly wrung out moist cloth
to
reduce explosion hazard.
5. Connect jumper cables in the se- quence as illustrated (
???).
CAUTION
.Always connect positive (+) to
positive (+) and negative (−) to
body ground (as illustrated) —
not to the battery.
. Make sure the jumper cables do
not touch moving parts in the
engine compartment and that
clamps do not contact any other
metal.
6. Start the engine of the booster vehicle
and let it run for a few minutes.
7. Keep the engine speed of the booster vehicle
at about 2,000 rpm, and
start the engine of the vehicle being
jump started
.
CAUTION
Do not keep the starter motor en-
gaged for more than 10 seconds. If
the engine does not start right away,
place the ignition switch in the OFF
position and wait 10 seconds before
trying again.
In case of emergency6-13

control to high speed.
3. If engine overheating is caused by climbing a long hill on a hot day, run
the engine at a fast idle (approxi-
mately 1,500 rpm) until the tempera-
ture gauge indication returns to
normal.
4. Get out of the vehicle. Look and listen for steam or coolant escaping from
the radiator before opening the hood.
(If steam or coolant is escaping, turn
off the engine.) Do not open the hood
further until no steam or coolant can
be seen.
5. Open the engine hood.
WARNING
If steam or water is coming from the
engine, stand clear to prevent get-
ting burned.
6. Visually check drive belts for damage or looseness. Also check if the cooling
fan is running. The radiator hoses and
radiator should not leak water. If cool-
ant is leaking or the cooling fan does
not run, stop the engine.
WARNING
Be careful not to allow your hands,
hair, jewelry or clothing to come into
contact with, or get caught in, engine
belts or the engine cooling fan. The
engine cooling fan can start at any
time.
7. After the engine cools down, check the coolant level in the reservoir tank
with the engine running. Add coolant
to the reservoir tank if necessary. Have
your vehicle repaired. It is recom-
mended you visit a NISSAN dealer for
this service.
In case of emergency6-15

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 ........................................................................\
...... 8-26
Exterior and interior lights ........................................ 8-26
Wheels and tires ........................................................................\
8-28
Tire pressure ........................................................................\
8-28
Tire labeling ........................................................................\
.. 8-32
Types of tires ....................................................................... 8-34
Tire chains ........................................................................\
...... 8-35
Changing wheels and tires ...................................... 8-36

could affect your warranty coverage.If in
doubt about any servicing, it is recom-
mended you have it done by a NISSAN
dealer.
JVC0965X
VK56VD ENGINE
1. Window washer fluid reservoir
2. Fuse/fusible link holder
3. Engine oil dipstick
4. Power steering fluid reservoir
5. Engine oil filler cap
6. Brake fluid reservoir 7. Fuse/fusible link holder
8. Battery
9. Radiator filler cap
10. Engine coolant reservoir
11. Drive belts
12. Air cleaner
Do-it-yourself8-3
ENGINE COMPARTMENT CHECK LOCATIONS