2018 INFINITI QX80 key battery

8 Do-it-yourself
Maintenance precautions ............................................... 8-2
Engine compartment check locations ......................... 8-3VK56VD engine model .............................................. 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 Brake fluid ..................................................................... 8-9
Window washer fluid ................................................... 8-10
Battery ........................................................................\
....... 8-11 Jump starting ............................................................. 8-12
Variable voltage control system ................................. 8-13
Drive belts ........................................................................\
. 8-13
Spark plugs ....................................................................... 8-14 Replacing spark plugs .............................................. 8-14
Air cleaner ........................................................................\
. 8-14 Windshield wiper blades .............................................. 8-15
Cleaning ..................................................................... 8-15
Replacing ................................................................... 8-16
Rear window wiper blades .......................................... 8-16
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 ....................................... 8-19
Intelligent Key battery replacement ........................ 8-20
Lights ........................................................................\
......... 8-23
Headlights ................................................................ 8-24
Exterior and interior lights ................................... 8-24
Wheels and tires ............................................................. 8-27
Tire pressure ............................................................. 8-27
Tire labeling .............................................................. 8-31
Types of tires ........................................................... 8-33
Tire chains ................................................................. 8-33
Changing wheels and tires .................................. 8-34

8-2Do-it-yourself
When performing any inspection or main-
tenance work on your vehicle, always take
care to prevent serious accidental injury to
yourself or damage to the vehicle. The
following are general precautions which
should be closely observed.
WARNING
.Park the vehicle on a level surface,
apply the parking brake securely and
block the wheels to prevent the
vehicle from moving. Move the shift
lever to P (Park).
. Be sure the ignition switch is in the
OFF or LOCK position when per-
forming any parts replacement or
repairs.
. Never connect or disconnect the
battery or any transistorized compo-
nent while the ignition switch is in the
ON position.
. Never leave the engine or automatic
transmission related component har-
nesses disconnected while the igni-
tion switch is in the ON position.
. If you must work with the engine
running, keep your hands, clothing,
hair and tools away from moving
fans, belts and any other moving parts.
. It is advisable to secure or remove
any loose clothing and remove any
jewelry, such as rings, watches, etc.
before working on your vehicle.
. Always wear eye protection when-
ever you work on your vehicle.
. If you must run the engine in an
enclosed space such as a garage, be
sure there is proper ventilation for
exhaust gases to escape.
. Never get under the vehicle while it is
supported only by a jack. If it is
necessary to work under the vehicle,
support it with safety stands.
. Keep smoking materials, flame and
sparks away from fuel tank and the
battery.
. Your vehicle is equipped with an
automatic engine cooling fan. It may
come on at any time without warn-
ing, even if the ignition key is in the
OFF position and the engine is not
running. To avoid injury, always dis-
connect the negative battery cable
before working near the fan.
. On gasoline engine models, the fuel
filter or fuel lines should be serviced
because the fuel lines are under high
pressure even when the engine is off. It is recommended you visit an
INFINITI retailer for this service.
CAUTION
.
Do not work under the hood while the
engine is hot. Turn the engine off and
wait until it cools down.
. Avoid direct contact with used en-
gine oil and coolant. Improperly dis-
posed engine oil, coolant, and/or
other vehicle fluids can damage the
environment. Always conform to lo-
cal regulations for disposal of vehicle
fluid.
This “8. Do-it-yourself” section gives in-
structions regarding only those items which
are relatively easy for an owner to perform.
A genuine INFINITI Service Manual is also
available. (See “Owner’s Manual/Service
Manual order information” (P.10-34).)
You should be aware that incomplete or
improper servicing may result in operating
difficulties or excessive emissions, and could
affect your warranty coverage. If in doubt
about any servicing, it is recommended you
have it done by an INFINITI retailer.
MAINTENANCE PRECAUTIONS

8-20Do-it-yourself
SDI2704
Extended storage fuse switch (if so
equipped)
To reduce battery drain, the extended
storage fuse switch comes from the factory
switched off. Prior to delivery of your
vehicle, the switch is pushed in (switched
on) and should always remain on.
If the extended storage fuse switch is not
pushed in (switched on), the “SHIPPING
MODE ON, PUSH STORAGE FUSE” warn-
ing may appear on the vehicle information
display (if so equipped). See “Vehicle infor-
mation display” (P.2-21).
If any electrical equipment does not operate,
remove the extended storage fuse switchand check for an open fuse.
NOTE:
If the extended storage fuse switch mal-
functions or if the fuse is open, it is not
necessary to replace the switch. In this case,
remove the extended storage fuse switch
and replace it with a new fuse of the same
rating.
How to remove the extended storage fuse
switch:
1. To remove the extended storage fuse
switch, be sure the ignition switch is in
the OFF or LOCK position.
2. Be sure the headlight switch is in the OFF position.
3. Remove the fuse box cover.
4. Pinch the locking tabsfound on each
side of the storage fuse switch.
5. Pull the storage fuse switch straight out from the fuse box
.
CAUTION
Be careful not to allow children to
swallow the battery and removed parts.
INTELLIGENT KEY BATTERY
REPLACEMENT

SDI2451
Replace the battery as follows:
1. Release the lock knob at the back of theIntelligent Key and remove the mechan-
ical key.
2. Insert a small screwdriver into the slit of the corner and twist it to separate the
upper part from the lower part. Use a cloth to protect the casing.
3. Replace the battery with a new one. Recommended battery: CR2025 or
equivalent.
.Do not touch the internal circuit and electric terminals as it could cause a
malfunction.
.Hold the battery by the edges. Hold-
ing the battery across the contact
points will seriously deplete the sto-
rage capacity.
.Make sure that the + side faces thebottom of the case.
SDI2452
4. Align the tips of the upper and lower
parts, and then push them together
until it is securely closed.
5. Push the buttons two or three times to check its operation.
It is recommended you visit an INFINITI
retailer if you need any assistance for
replacement.
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 interference
Do-it-yourself8-21

9-10Maintenance and schedules
CHASSIS AND BODY MAINTENANCE
Abbreviations: I = Inspect and correct or replace as necessary, R = Replace, L = Lubricate
MAINTENANCE OP-
ERATION
Perform at of miles,
kilometers or months,
whichever comes first.Miles × 1,000
(km × 1,000) Months MAINTENANCE INTERVAL
5
(8) 6 10
(16) 12 15
(24) 18 20
(32) 24 25
(40) 30 30
(48) 36 35
(56) 42 40
(64) 48 45
(72) 54 50
(80) 60 55
(88) 66 60
(96) 72
Brake lines and cables I I I I I I
Brake pads and rotors$ II I I I I
Brake fluid$ RR R
Automatic transmission
fluid See NOTE (1)
Transfer fluid and dif-
ferential gear oil See NOTE (2)
II I I I I
Steering gear and link-
age, axle and suspension
parts$ II I
Tire rotation See NOTE (3)
Propeller shaft and drive
shaft boots (4WD mod-
els)$ II I I I I
Propeller shaft grease
(4WD models) LL L L L L
Exhaust system$ II I
In-cabin microfilter RR R R
Intelligent Key battery RR R R

MAINTENANCE OP-
ERATION
Perform at of miles, kilo-
meters or months,
whichever comes first.Miles × 1,000
(km × 1,000) Months MAINTENANCE INTERVAL
65
(104) 78 70
(112) 84 75
(120) 90 80
(128) 96 85
(136) 102 90
(144) 108 95
(152) 114 100
(160) 120 105
(168) 126 110
(176) 132 115
(184) 138 120
(192) 144
Brake lines & cables IIII I I
Brake pads & rotors$ IIII I I
Brake fluid$ RR R
Automatic transmission
fluid See NOTE (1)
Transfer fluid & differen-
tial gear oil See NOTE (2)
IIII I I
Steering gear & linkage,
axle & suspension parts$ II I
Tire rotation See NOTE (3)
Propeller shaft & drive
shaft boots (4WD mod-
els)$ IIII I I
Propeller shaft grease
(4WD models) LLLL L L
Exhaust system$ II I
In-cabin microfilter RRR R
Intelligent Key battery RRR R
Maintenance and schedules9-11

11 Index
A
ABS (Anti-lock Braking System) ................... 5-132
Adaptive front lighting system (AFS) ............ 2-42
Advanced air bag system .................................. 1-58
Aiming controlAdaptive front lighting system (AFS) ...... 2-42
Headlights ........................................................ 2-41
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 ............................... 1-69, 2-17
Air cleaner housing filter ................................... 8-14
Air conditioner Advanced Climate Control System ......... 4-29
Air conditioner service ................................. 4-35
Air conditioner specification label ......... 10-13
Air conditioning system refrigerant and
lubricant recommendations ............ 4-35, 10-7
Automatic climate control ............. 4-26, 4-28
In-cabin microfilter ........................................ 4-35
Alarm, How to stop alarm (see vehicle
security system) ................................................... 2-32
Alcohol, drugs and driving ................................ 5-10 Antenna .................................................................. 4-36
Anti-lock Braking System (ABS) ................... 5-132
Anti-lock braking system (ABS)
warning light ......................................................... 2-12
Appearance care
Exterior appearance care ............................... 7-2
Interior appearance care ................................ 7-5
Armrest ................................................................... 1-10
Around View
®Monitor ........................................ 4-3
Audible reminders ................................................ 2-21
Auto closure .......................................................... 3-25
Autolight system .................................................. 2-37
Automatic
Automatic Transmission Fluid (ATF) ......... 8-8
Climate control .................................. 4-26, 4-28
Door locks .......................................................... 3-6
Drive positioner .............................................. 3-39
Driving with automatic transmission ....... 5-18
Seat positioner ............................................... 3-39
Average fuel consumption and speed ........... 2-29
Avoiding collision and rollover ........................... 5-8
B
Back door (See liftgate) ..................................... 3-21
Back-up Collision Intervention
(BCI) system .......................................................... 5-55
Battery .................................................................... 8-11 Battery saver system ........................ 2-41, 2-66
Intelligent Key ................................................ 8-20 Variable voltage control system ............... 8-13
Before starting the engine ................................ 5-15
Belts (See drive belts) ......................................... 8-13
Blind Spot Intervention (BSI) ON
indicator light ........................................................ 2-18
Blind Spot Intervention
®(BSI) system .......... 5-42
Blind Spot Warning (BSW) system ................ 5-32
Blind Spot Warning (BSW)/Blind Spot
Intervention (BSI) system warning light ....... 2-13
Booster seats ........................................................ 1-48
Brake
Anti-lock Braking System (ABS) ............. 5-132
Brake booster ................................................. 8-17
Brake fluid ......................................................... 8-9
Brake system ................................................ 5-131
Parking brake operation .............................. 5-22
Warning light .................................................. 2-13
Break-in schedule .............................................. 5-119
Brightness control Instrument panel ............................................ 2-43
Bulb check/instrument panel ........................... 2-12
Bulb replacement ................................................. 8-23
C
Cabin air filter ....................................................... 4-35
Camera aiding sonar function ......................... 4-16
Capacities and
recommended fluids/lubricants ....................... 10-2
Car phone or CB radio ....................................... 4-36

11-4
IndicatorLights ................................................................ 2-18
Vehicle information display ........................ 2-21
Indicator light
Lane Departure Warning (LDW) indicator
light (green) ..................................................... 2-19
Infiniti InTouch Owner’s Manual ...................... 4-2
INFINITI Vehicle Immobilizer System ............ 2-32
Inside mirror .......................................................... 3-30
Inspection/maintenance (I/M) test ............. 10-33
Instrument brightness control ......................... 2-43
Instrument panel ..................................................... 2-5
Intelligent cruise control (ICC) system .......... 5-66
Main switch indicator ................................... 2-26
Intelligent Cruise Control (ICC) system
warning light ......................................................... 2-15
Intelligent Key .......................................................... 3-2
Intelligent Key system ........................................... 3-7 Battery replacement .................................... 8-20
Key operating range ....................................... 3-9
Key operation ................................................. 3-10
Warning light .................................................. 2-15
Warning signals .............................................. 3-12
Intelligent Key warning light ............................ 2-15
Interior light control switch .............................. 2-67
Interior light replacement .................................. 8-24
Interior lights ......................................................... 2-66
ISOFIX child restraint ......................................... 1-33J
Jump starting ......................................................... 6-11
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 ......... 10-13
Emission control information label ........ 10-12
Engine serial number ................................. 10-12
F.M.V.S.S./C.M.V.S.S.
certification label ........................................ 10-12
Tire and Loading
information label ............................. 8-29, 10-13
Vehicle identification number (VIN) ....... 10-11
Lane Departure Warning (LDW) indicator
light (green) ........................................................... 2-19
Lane Departure Warning (LDW) indicator
light (orange) ......................................................... 2-15
Lane Departure Warning (LDW)/Lane
Departure Prevention (LDP) ........................... 5-22
LATCH system ..................................................... 1-33
License plate, Installing front
license plate ......................................................... 10-13 Liftgate ................................................................... 3-21
Light
Air bag warning light .................................... 1-69
Bulb replacement ........................................... 8-23
Cargo light ....................................................... 2-68
Fog light switch ............................................ 2-44
Headlight switch ............................................ 2-37
Headlights bulb replacement .................... 8-24
Indicator lights ................................................ 2-18
Interior light control switch ........................ 2-67
Interior lights ................................................... 2-66
Map lights ........................................................ 2-66
Replacement ................................................... 8-23
Vanity mirror lights ....................................... 2-68
Warning/indicator lights and
audible reminders .......................................... 2-12
Lights, Exterior and interior
light replacement ................................................. 8-24
Linking Intelligent Key ........................................ 4-35
Loading information (See vehicle
loading information) ........................................ 10-14
Lock Automatic door locks ..................................... 3-6
Door locks .......................................................... 3-4
Liftgate lock .................................................... 3-21
Power door lock ............................................... 3-4
Locking with mechanical key ............................. 3-4
Loose fuel cap warning ..................................... 3-26
Low outside temperature warning ................. 2-26
Low tire pressure warning light ...................... 2-15