wheel NISSAN ARMADA PLATINUM 2017 Owners Manual

11 Index
A
ABS (Anti-lock Braking System) ......................... 5-137
Advanced Air Bag System ....................................... 1-58
Aiming controlHeadlights ............................................................. 2-39
Air bag system Advanced Air Bag System ................................ 1-58
Front passenger air bag and status light ...... 1-60
Front-seat mounted side-impact
supplemental air bag system ............................ 1-65
Roof-mounted curtain side-impact and
rollover supplemental air bag system ............. 1-65
Air bag warning labels .............................................. 1-68
Air bag warning light ..................................... 1-68, 2-16
Air cleaner housing filter ........................................... 8-15
Air conditioner Air conditioner operation ................................... 4-52
Air conditioner service ....................................... 4-58
Air conditioner specification label ................. 10-12
Air conditioning system refrigerant and
lubricant recommendations .................... 4-58, 10-7
Automatic air conditioner .................................. 4-54
In-cabin microfilter ............................................... 4-58
Alarm, How to stop alarm (see vehicle
security system) .......................................................... 2-31
Alcohol, drugs and driving ....................................... 5-10
Antenna ......................................................................... 4-92
Anti-lock Braking System (ABS) ......................... 5-137
Anti-lock Braking System (ABS) warning light .... 2-11
Appearance care Exterior appearance care ..................................... 7-2
Interior appearance care ....................................... 7-4
Armrest .......................................................................... 1-10
Around View
ŠMonitor .............................................. 4-29 Audible reminders ...................................................... 2-20
Audio operation precautions ................................... 4-59
Audio system ............................................................... 4-59
Steering wheel audio controls ......................... 4-91
Auto closure ................................................................. 3-25
Autolight system ......................................................... 2-37
Automatic Air conditioner ...................................................... 4-54
Automatic Transmission Fluid (ATF) .................. 8-8
Door locks ................................................................ 3-6
Drive positioner .................................................... 3-33
Driving with automatic transmission ............... 5-18
Seat positioner ..................................................... 3-33
Average fuel consumption and speed .................. 2-28
Avoiding collision and rollover .................................. 5-8
B
Back door (See liftgate) ........................................... 3-22
Back-up Collision Intervention (BCI) ..................... 5-56
Battery ........................................................................... 8-11 Battery saver system ............................... 2-39, 2-64
Intelligent Key ....................................................... 8-21
Variable voltage control system ....................... 8-13
Before starting the engine ....................................... 5-15
Belts (See drive belts) .............................................. 8-13
Blind Spot Intervention
Š(BSI) ................................ 5-43
Blind Spot Intervention (BSI) ON
indicator light ............................................................... 2-17
Blind Spot Warning (BSW) .................................... 5-33
Blind Spot Warning (BSW)/Blind Spot
Intervention (BSI) system warning light ................ 2-12
Bluetooth
ŠHands-Free Phone System ............. 4-106
BluetoothŠstreaming audio ..................................... 4-81
Booster seats .............................................................. 1-48 Brake
Anti-lock Braking System (ABS) ................... 5-137
Brake booster ....................................................... 8-18
Brake fluid ................................................................ 8-9
Brake system ...................................................... 5-136
Parking brake operation ..................................... 5-22
Warning light ........................................................ 2-12
Break-in schedule .................................................... 5-121
Brightness control Display ON/OFF button ........................................ 4-8
Instrument panel .................................................. 2-40
Bulb check/instrument panel ................................... 2-11
Bulb replacement ....................................................... 8-24
C
Cabin air filter .............................................................. 4-58
CAMERA button ........................................................... 4-8
Capacities and
recommended fluids/lubricants ............................... 10-2
Car phone or CB radio .......................................... 4-106
Cargo floor box ........................................................... 2-56
Cargo light ................................................................... 2-67
Catalytic converter, Three way catalyst .................. 5-4
CD/DVD/USB memory care and cleaning .......... 4-90
Center multi-function control panel ......................... 4-4
Chassis and body maintenance ............................. 9-11
Child restraints ............................................................ 1-31 Booster seats ....................................................... 1-48
LATCH system ..................................................... 1-33
Precautions on child restraints ........................ 1-31
Top tether strap ................................................... 1-36
Child safety .................................................................. 1-28
Child safety rear door lock ........................................ 3-6
Chimes
Audible reminders ............................................... 2-20

Front passenger air bag and status light ............. 1-60
Front power seat adjustment .................................... 1-3
Front seatFront seat adjustment ................................ 1-3, 1-10
Front-seat active head restraint .............................. 1-17
Fuel Capacities and
recommended fluids/lubricants ........................ 10-2
Fuel economy ..................................................... 5-122
Fuel economy information (display) ................ 4-10
Fuel information .................................................... 10-4
Fuel octane rating ............................................... 10-4
Fuel-filler cap ........................................................ 3-26
Fuel-filler door ...................................................... 3-26
Gauge ........................................................................ 2-8
LOOSE FUEL CAP warning ............................. 3-28
Fuel efficient driving tips ........................................ 5-121
Fuses ............................................................................. 8-18
Fusible links ................................................................. 8-19
G
Garage door opener
HomeLinkŠUniversal Transceiver ................... 2-67
Gas cap ........................................................................ 3-26
Gauge .............................................................................. 2-5 Engine coolant temperature gauge ................... 2-7
Engine oil pressure gauge ................................... 2-8
Fuel gauge ............................................................... 2-8
Odometer ................................................................. 2-6
Speedometer ........................................................... 2-6
Tachometer ............................................................... 2-7
Trip computer ....................................................... 2-27
General maintenance .................................................. 9-2
Glove box ..................................................................... 2-53
H
Hands-Free Phone System, BluetoothŠ............ 4-106
Hazard warning flasher switch .................................. 6-2
Head restraints/headrests ........................................ 1-13
Headlights Aiming control ...................................................... 2-39
Bulb replacement ................................................ 8-25
Headlight switch .................................................. 2-37
Headphones ................................................................ 4-94
Heated seats ............................................................... 2-43
Heated steering wheel .............................................. 2-42
Heater Automatic air conditioner .................................. 4-54
Engine block heater .......................................... 5-141
Heater and air conditioner operation ............. 4-52
Hill start assist system ........................................... 5-130
HomeLink
ŠUniversal Transceiver .......................... 2-67
Hood release ............................................................... 3-21
Hook Coat hooks ............................................................ 2-55
Luggage hook ...................................................... 2-56
Horn ............................................................................... 2-43
I
Ignition switch (Push-button) .................................. 5-12
Immobilizer system ..................................................... 2-31
In-cabin microfilter ...................................................... 4-58
Indicator Lights ...................................................................... 2-17
Vehicle information display ................................ 2-20
INFO button ................................................................... 4-9
Inside mirror ................................................................. 3-30
Inspection/Maintenance (I/M) test ...................... 10-32
Instrument brightness control .................................. 2-40
Instrument panel ........................................................... 2-4 Intelligent Cruise Control (ICC) ............................ 5-69
Intelligent cruise control (ICC) system
Main switch indicator ......................................... 2-25
Intelligent Cruise Control (ICC) system
warning light ................................................................ 2-14
Intelligent Key ................................................................ 3-2
Intelligent Key system .................................................. 3-7 Battery replacement ............................................ 8-21
Key operating range .............................................. 3-9
Key operation ........................................................ 3-10
Warning light ........................................................ 2-14
Warning signals ................................................... 3-12
Intelligent Key warning light ..................................... 2-14
Interior light control switch ...................................... 2-65
Interior light replacement .......................................... 8-26
Interior lights ................................................................ 2-65
iPod
Šplayer operation .............................................. 4-86
ISOFIX child restraint ................................................ 1-33
J
Jump starting ............................................................... 6-12
K
Keyless entry (See remote keyless
entry system) ............................................................... 3-15
Keys ................................................................................. 3-2 For Intelligent Key system .................................... 3-7
L
LabelsAir bag warning labels ....................................... 1-68
Air conditioner specification label ................. 10-12
Emission control information label ................ 10-11
Engine serial number ........................................ 10-11
11-3

Starting the engine ............................................. 5-16
STATUS button ............................................................. 4-8
Status light, Front passenger air bag .................... 1-60
Steering Heated steering wheel ....................................... 2-42
Power steering ................................................... 5-135
Power steering fluid ............................................... 8-8
Steering-wheel-mounted controls
for audio ................................................................. 4-91
Tilt/telescopic steering ....................................... 3-29
Storage ......................................................................... 2-50
Sun visors ..................................................................... 3-29
Sunglasses holder ...................................................... 2-52
Supplemental air bag warning labels .................... 1-68
Supplemental air bag warning light ........... 1-68, 2-16
Supplemental restraint system ................................ 1-52 Precautions on supplemental
restraint system .................................................... 1-52
Switch Autolight switch ................................................... 2-37
Fog light switch ................................................... 2-42
Hazard warning flasher switch ............................ 6-2
Headlight aiming control .................................... 2-39
Headlight switch .................................................. 2-37
Ignition switch ...................................................... 5-18
Power door lock switch ........................................ 3-5
SNOW mode switch .......................................... 2-47
Turn signal switch ................................................ 2-41
Vehicle Dynamic Control (VDC)
OFF switch ............................................................ 2-48
T
Tachometer ..................................................................... 2-7
Temperature gauge, Engine coolant
temperature gauge ....................................................... 2-7 Theft (NISSAN Vehicle Immobilizer System) ,
Engine start .................................................................. 2-31
Three-way catalyst ....................................................... 5-4
Tilt/telescopic steering .............................................. 3-29
Tire
Pressure, Low tire pressure warning light .... 2-15
Tire replacement indicator ................................. 2-26
Tires Flat tire ...................................................................... 6-3
Tire and Loading information label .... 8-31, 10-12
Tire chains ............................................................. 8-36
Tire dressing ............................................................ 7-4
Tire pressure ......................................................... 8-30
Tire pressure information (display) ................. 4-10
Tire Pressure Monitoring
System (TPMS) ............................................. 5-5, 6-3
Tire rotation ........................................................... 8-37
Types of tires ........................................................ 8-36
Uniform tire quality grading ............................. 10-29
Wheel/tire size ..................................................... 10-9
Wheels and tires ................................................. 8-30
To p Tether strap child restraints .............................. 1-36
Touch screen ................................................................. 4-5
TOW mode ............................................................... 5-132
TOW mode switch ..................................................... 2-47
Towing Flat towing ........................................................... 10-29
Tow truck towing ................................................. 6-16
Towing a trailer ................................................... 10-17
Towing safety ...................................................... 10-21
TPMS, Tire Pressure Monitoring System ...... 5-5, 6-3 TPMS with Easy Fill Tire Alert ............................ 5-8
Trailer towing ............................................................ 10-17
Transceiver HomeLink
ŠUniversal Transceiver ................... 2-67 Transmission
Automatic Transmission Fluid (ATF) .................. 8-8
Driving with automatic transmission ............... 5-18
Transmission shift lever lock release .............. 5-21
Transmitter (See remote keyless
entry system) ............................................................... 3-15
Traveling or registering your vehicle in
another country ........................................................ 10-10
Trip computer .............................................................. 2-27
Trip odometer .............................................................. 2-28
Turn signal switch ....................................................... 2-41
U
Underbody cleaning ..................................................... 7-3
Uniform tire quality grading ................................... 10-29
USB (Universal Serial Bus) connection port ....... 4-77
V
Vanity mirror ................................................................. 3-33
Vanity mirror lights ...................................................... 2-66
Variable voltage control system .............................. 8-13
Vehicle Dimensions ............................................................ 10-9
Identification number (VIN) ............................. 10-10
Loading information .......................................... 10-13
Recovery (freeing a stuck vehicle) .................. 6-19
Security system .................................................... 2-30
Vehicle Dynamic Control (VDC)
OFF switch ............................................................ 2-48
Vehicle Dynamic Control (VDC) system ...... 5-138
Vehicle Dynamic Control (VDC)
warning light ......................................................... 2-17
Vehicle information and settings (display) ....... 4-8
Vehicle information display ....................................... 2-20
Ventilators ..................................................................... 4-51

Voice command (NISSAN voice
recognition system) .................................. 4-122, 4-133
Voice recognition system ...................................... 4-117
Voice recognition, Alternate command mode .... 4-130
Voltmeter ......................................................................... 2-9
W
WarningCheck tire pressure warning ............................ 2-24
Hazard warning flasher switch ............................ 6-2
Lights ...................................................................... 2-11
Loose fuel cap warning ..................................... 2-24
Predictive Forward Collision
Warning (PFCW) .............................................. 5-112
Tire Pressure Monitoring
System (TPMS) ............................................. 5-5, 6-3
Vehicle information display ................................ 2-20
Warning lights, indicator lights and
audible reminders ................................................ 2-10
Warning labels, Air bag warning labels ................ 1-68
Warning light
4WD warning light ............................................ 5-128
Air bag warning light ............................... 1-68, 2-16
Anti-lock Braking System (ABS)
warning light ......................................................... 2-11
Brake warning light ............................................. 2-12
Forward Emergency Braking system
warning light ......................................................... 2-14
Intelligent Key warning light .............................. 2-14
Lane Departure Warning (LDW) indicator
light (orange) ........................................................ 2-14
Low tire pressure warning light ....................... 2-15
Seat belt warning light and chime .................. 2-16
Warranty, Emission control system warranty .... 10-30
Washer switch Rear window wiper and washer switch ........ 2-35 Windshield wiper and washer switch ............ 2-32
Washing .......................................................................... 7-2
Waxing ............................................................................ 7-2
Welcome light ............................................................. 2-64
Wheel/tire size ............................................................ 10-9
Wheels and tires ........................................................ 8-30 Care of wheels ........................................................ 7-3
Cleaning aluminum alloy wheels ......................... 7-3
Cleaning bright wheels ......................................... 7-3
Window washer fluid ................................................. 8-10
Window(s) Cleaning .................................................................... 7-3
Power windows .................................................... 2-59
Windshield wiper and washer switch ................... 2-32
Wiper Rain-sensing auto wiper system ..................... 2-34
Rear window wiper and washer switch ........ 2-35
Windshield wiper and washer switch ............ 2-32
Wiper blades ........................................................ 8-16
11-7

the weight rating of the hitch compo-
nents. Never exceed the weight rating
of the hitch components. Doing so can
cause serious personal injury or prop-
erty damage.
Hitch ball
Choose a hitch ball of the proper size and
weight rating for your trailer:
.The required hitch ball size is stamped on
most trailer couplers. Most hitch balls also
have the size printed on top of the ball.
. Choose the proper class hitch ball based on
the trailer weight.
. The diameter of the threaded shank of the
hitch ball must be matched to the ball mount
hole diameter. The hitch ball shank should
be no more than 1/16´´ smaller than the hole
in the ball mount.
. The threaded shank of the hitch ball must be
long enough to be properly secured to the
ball mount. There should be at least 2
threads showing beyond the lock washer
and nut.
Ball mount
The hitch ball is attached to the ball mount and
the ball mount is inserted into the hitch receiver.
Choose a proper class ball mount based on the
trailer weight. Additionally, the ball mount should
be chosen to keep the trailer tongue level with
the ground.
Weight carrying hitches
A weight carrying or “dead weight” ball mount is
one that is designed to carry the whole amount
of tongue weight and gross weight directly on
the ball mount and on the receiver.
Weight distribution hitch
This type of hitch is also called a “load-leveling”
or “equalizing” hitch. A set of bars attach to the
ball mount and to the trailer to distribute the
tongue weight (hitch weight) of your trailer.
Many vehicles cannot carry the full tongue
weight of a given trailer, and need some of the
tongue weight transferred through the frame and
pushing down on the front wheels. This gives
stability to the tow vehicle.
A weight-distributing hitch system (Class IV) is
recommended if you plan to tow trailers with a
maximum weight over 5,000 lbs (2,267 kg) .
Check with the trailer and towing equipment
manufacturers to determine if they recommend
the use of a weight-distributing hitch system. NOTE:
A weight-distributing hitch system may
affect the operation of trailer surge brakes.
If you are considering use of a weight-
distributing hitch system with a surge
brake-equipped trailer, check with the
surge brake, hitch or trailer manufacturer
to determine if and how this can be done.
Follow the instructions provided by the manu-
facturer for installing and using the weight-
distributing hitch system.
General set-up instructions are as follows:
1. Park unloaded vehicle on a level surface.
With the ignition switch in the ON position
and the doors closed, allow the vehicle to
stand for several minutes so that it can level.
2. Measure the height of a reference point on the front and rear bumpers at the center of
the vehicle.
3. Attach the trailer to the vehicle and adjust the hitch equalizers so that the front bumper
height is within 0 - .5 inches (0 - 13 mm) of
the reference height measured in step 2.
The rear bumper should be no higher than
the reference height measured in step 2.
Technical and consumer information10-23

Voice command (NISSAN voice
recognition system) .................................. 4-122, 4-133
Voice recognition system ...................................... 4-117
Voice recognition, Alternate command mode .... 4-130
Voltmeter ......................................................................... 2-9
W
WarningCheck tire pressure warning ............................ 2-24
Hazard warning flasher switch ............................ 6-2
Lights ...................................................................... 2-11
Loose fuel cap warning ..................................... 2-24
Predictive Forward Collision
Warning (PFCW) .............................................. 5-112
Tire Pressure Monitoring
System (TPMS) ............................................. 5-5, 6-3
Vehicle information display ................................ 2-20
Warning lights, indicator lights and
audible reminders ................................................ 2-10
Warning labels, Air bag warning labels ................ 1-68
Warning light
4WD warning light ............................................ 5-128
Air bag warning light ............................... 1-68, 2-16
Anti-lock Braking System (ABS)
warning light ......................................................... 2-11
Brake warning light ............................................. 2-12
Forward Emergency Braking system
warning light ......................................................... 2-14
Intelligent Key warning light .............................. 2-14
Lane Departure Warning (LDW) indicator
light (orange) ........................................................ 2-14
Low tire pressure warning light ....................... 2-15
Seat belt warning light and chime .................. 2-16
Warranty, Emission control system warranty .... 10-30
Washer switch Rear window wiper and washer switch ........ 2-35 Windshield wiper and washer switch ............ 2-32
Washing .......................................................................... 7-2
Waxing ............................................................................ 7-2
Welcome light ............................................................. 2-64
Wheel/tire size ............................................................ 10-9
Wheels and tires ........................................................ 8-30 Care of wheels ........................................................ 7-3
Cleaning aluminum alloy wheels ......................... 7-3
Cleaning bright wheels ......................................... 7-3
Window washer fluid ................................................. 8-10
Window(s) Cleaning .................................................................... 7-3
Power windows .................................................... 2-59
Windshield wiper and washer switch ................... 2-32
Wiper Rain-sensing auto wiper system ..................... 2-34
Rear window wiper and washer switch ........ 2-35
Windshield wiper and washer switch ............ 2-32
Wiper blades ........................................................ 8-16
11-7

Rocking a stuck vehicle
If your vehicle is stuck in sand, snow, mud, etc.,
use the following procedure:
1. Turn off the Vehicle Dynamic Control (VDC)system.
2. Make sure the area in front and behind the vehicle is clear of obstructions.
3. Turn the steering wheel right and left to clear an area around the front tires.
4. Slowly rock the vehicle forward and back- ward.
.Shift back and forth between R (Reverse)and D (Drive) .
.Apply the accelerator as little as possibleto maintain the rocking motion.
.Release the accelerator pedal before
shifting between R and D.
.Do not spin the tires above 35 MPH (55 km/h) .
5. If the vehicle cannot be freed after a few tries, contact a professional towing service
to remove the vehicle. This section describes the procedure for manu-
ally shifting the vehicle into the 4WD mode (4L
position) in case of an emergency.
WHEN 4WD WARNING LIGHT ILLU-
MINATES
If the 4WD warning light illuminates while
driving, there may be a malfunction in the
4WD system. Stop the vehicle and have the
vehicle checked as soon as possible. It is
recommended you contact a NISSAN dealer
for this service. (See “NISSAN all-mode 4WD
Š”
(P.5-123) .)
When the vehicle is stuck on an uneven road
(desert, mud, etc.) and the 4WD warning light is
illuminated, be sure to place the 4WD shift
switch in the 4L position. If only the rear wheels
are spinning, this means that the transfer has not
switched to the 4L position electrically.
If this situation occurs, contact a dealer or road
assistance service for help. If an immediate
service is not available, perform the following
procedure to switch to the 4L position manually
and free the vehicle.

far-away as practical from the steer-
ing wheel or instrument panel. Al-
ways use the seat belts.
. The driver and front passenger seat
belt buckles are equipped with
sensors that detect if the seat belts
are fastened. The Advanced Air Bag
System monitors the severity of a
collision and seat belt usage then
inflates the air bags. Failure to
properly wear seat belts can in-
crease the risk or severity of injury
in an accident.
. The front passenger seat is
equipped with occupant classifica-
tion sensors (weight sensors) that
turn the front passenger air bag
OFF under some conditions. This
sensor is only used in this seat.
Failure to be properly seated and
wearing the seat belt can increase
the risk or severity of injury in an
accident. See “Front passenger air
bag and status light” (P.1-60) .
. Keep hands on the outside of the
steering wheel. Placing them inside
the steering wheel rim could in-
crease the risk of injury if the front air bag inflates.

.If a forward facing child restraint is
installed in the front passenger
seat, do not position the front
passenger seat so the child restraint
contacts the instrument panel. If the
child restraint does contact the in-
strument panel, the system may
determine the seat is occupied and
the passenger air bag may deploy in
a collision. Also the front passenger
air bag status light may not illumi-
nate. See “Child restraints” (P.1-31)
for information about installing and
using child restraints.
. Confirm the operating condition
with the front passenger air bag
status light.
. If you notice that the front passen-
ger air bag status light is not
operating as described in this sec-
tion, it is recommended you visit a
NISSAN dealer to check the passen-
ger seat Advanced Air Bag System.
. Until you have confirmed with your
dealer that your passenger seat
advanced air bag is working prop-
erly, position the occupants in the
rear seating positions. This vehicle is equipped with the NISSAN
Advanced Air Bag System for the driver and
front passenger seats. This system is designed
to meet certification requirements under U.S.
regulations. It is also permitted in Canada.
All of
the information, cautions and warnings in
this manual apply and must be followed.
The driver supplemental front-impact air bag is
located in the center of the steering wheel. The
passenger supplemental front-impact air bag is
mounted in the instrument panel above the glove
box. The front air bags are designed to inflate in
higher severity frontal collisions, although they
may inflate if the forces in another type of
collision are similar to those of a higher severity
frontal impact. They may not inflate in certain
frontal collisions. Vehicle damage (or lack of it) is
not always an indication of proper front air bag
operation.
The NISSAN Advanced Air Bag System moni-
tors information from the Air bag Control Unit
(ACU) , seat belt buckle sensors and the
occupant classification sensors (weight sen-
sors) . Inflator operation is based on the severity
of a collision and seat belt usage for the driver.
For the front passenger, the occupant classifi-
cation sensors are also monitored. Based on
information from the sensors, only one front air
bag may inflate in a crash, depending on the
crash severity and whether the front occupants are belted or unbelted. Additionally, the front
passenger air bag may be automatically turned
OFF under some conditions, depending on the
information provided by the occupant classifica-
tion sensors. If the front passenger air bag is
OFF, the front passenger air bag status light will
be illuminated (if the seat is unoccupied, the
light will not be illuminated, but the air bag will
be off) . (See “Front passenger air bag and
status light” (P.1-60) for further details.) One
front air bag inflating does not indicate improper
performance of the system.
If you have any questions about your air bag
system, it is recommended you visit a NISSAN
dealer to obtain information about the system. If
you are considering modification of your vehicle
due to a disability, you may also contact
NISSAN. Contact information is contained in
the front of this Owner’s Manual.
When a front air bag inflates, a fairly loud noise
may be heard, followed by release of smoke.
This smoke is not harmful and does not indicate
a fire. Care should be taken not to inhale it, as it
may cause irritation and choking. Those with a
history of a breathing condition should get fresh
air promptly.
Front air bags, along with the use of seat belts,
help to cushion the impact force on the head
and chest of the front occupants. They can help
Safety — seats, seat belts and supplemental restraint system1-59

save lives and reduce serious injuries. However,
an inflating front air bag may cause facial
abrasions or other injuries. Front air bags do
not provide restraint to the lower body.
Even with NISSAN advanced air bags, seat
belts should be correctly worn and the driver
and passenger seated upright as far as practical
away from the steering wheel or instrument
panel. The front air bags inflate quickly in order
to help protect the front occupants. Because of
this, the force of the front air bag inflating can
increase the risk of injury if the occupant is too
close to, or is against, the air bag module during
inflation.
The front air bags deflate quickly after a collision.
The front air bags operate only when the
ignition switch is in the ON position.
After placing the ignition switch in the ON
position, the supplemental air bag warning
light illuminates. The supplemental air bag
warning light will turn off after about 7
seconds if the system is operational.