2021 INFINITI QX80 child lock

3-6Pre-driving checks and adjustments
Lockout protection
When the power door lock switch (driver or
front passenger) is moved to the lock
position with any door open, all doors will
lock and unlock automatically. With the
Intelligent Key left in the vehicle and any
door open, all doors will unlock automati-
cally and a chime will sound after the door is
closed.
These functions help to prevent the Intelli-
gent Key from being accidentally locked
inside the vehicle.
AUTOMATIC DOOR LOCKS
.All doors lock automatically when the
vehicle speed reaches 15 MPH (24
km/h).
. All doors unlock automatically when the
ignition switch is placed in the OFF
position.
The automatic unlock function can be
deactivated or activated. To deactivate or
activate the automatic door unlock system,
perform the following procedure:
1. Close all doors.
2. Place the ignition switch in the ON position.
3. Within 20 seconds of performing Step 2, push and hold the power door lock
switch to the
position (UNLOCK) for more than 5 seconds.
4. When activated, the hazard indicator will flash twice. When deactivated, the ha-
zard indicator will flash once.
5. The ignition switch must be placed in the OFF and ON position again between
each setting change.
When the automatic door unlock system is
deactivated, the doors do not unlock when
the ignition switch is placed in the OFF
position. To unlock the door manually, use
the inside lock knob or the power door lock
switch (driver’s or front passenger’s side).
SPA2536
CHILD SAFETY REAR DOOR
LOCK
Child safety rear door locks help prevent
doors from being opened accidentally, espe-
cially when small children are in the vehicle.
When the levers are in the lock position
,
the rear doors can be opened only from the
outside.
To disengage, move the levers to the unlock
position
.

3-22Pre-driving checks and adjustments
WARNING
.Always be sure the liftgate has been
closed securely to prevent it from
opening while driving.
. Do not drive with the liftgate open.
This could allow dangerous exhaust
gases to be drawn into the vehicle.
See “Exhaust gas (carbon monoxide)”
(P.5-4).
. Do not leave children unattended
inside the vehicle. They could un-
knowingly activate switches or con-
trols. Unattended children could
become involved in serious accidents.
. Always be sure that hands and feet
are clear of the door frame to avoid
injury while closing the liftgate.
JVP0569X
OPERATING MANUAL LIFTGATE
To open the liftgate, unlock it and push the
liftgate opener switch. Pull up the liftgate
to open.
The liftgate can be unlocked by:
. pushing the unlock button
on the
Intelligent Key twice.
. pushing the liftgate request switch with
the Intelligent Key carried on you.
. pushing the door handle request switch
twice with the Intelligent Key carried on
you.
. pushing the power door lock switch to
the unlock position. .
inserting the mechanical key into the
driver’s door key cylinder and turning it
to the rear of the vehicle twice.
To close the liftgate, pull down until it
securely locks.
OPERATING POWER LIFTGATE
To operate the power liftgate, the shift lever
must be in the P (Park) position.
The power liftgate will not operate if the
battery voltage is low.
LIFTGATE

3-26Pre-driving checks and adjustments
pinching, keep hands and fingers
away from liftgate opening.
. Do not let children operate the lift-
gate.
SPA2778
LIFTGATE RELEASE LEVER
If the liftgate cannot be opened with the
door lock switch due to a discharged battery,
follow these steps.
1. Remove the cover
inside of the liftgate
using a suitable tool.
2. Move the lever
as illustrated to open
the liftgate.
It is recommended you contact an INFINITI
retailer as soon as possible for repair.
OPENING THE FUEL-FILLER
DOOR
CAUTION
Lock all doors before going through
automatic car wash. Locking doors helps
prevent fuel-filler door from opening
and becoming damaged.
FUEL-FILLER DOOR

8-8Do-it-yourself
After the operation
1. Install the engine undercover into posi-tion as the following steps.
a. Pull the center of the small plastic clip
out.
b. Hold the engine undercover into posi- tion.
c. Insert the clip through the undercover into the hole in the frame, then push
the center of the clip in to lock the clip
in place.
d. Install the other bolts that hold the undercover in place. Be careful not to
strip the bolts or over-tighten them.
2. Lower the vehicle carefully to the ground.
3. Dispose of waste oil and filter properly.
WARNING
. Prolonged and repeated contact with
used engine oil may cause skin cancer.
. Try to avoid direct skin contact with
used oil. If skin contact is made, wash
thoroughly with soap or hand cleaner
as soon as possible.
. Keep used engine oil out of reach of
children. When checking or replacement is required,
we recommend an INFINITI retailer for
servicing.
CAUTION
.
It is recommended that you use only
Genuine NISSAN Matic S ATF. Do
not mix with other fluids.
. Using automatic transmission fluid
other than Genuine NISSAN Matic S
ATF may cause deterioration in dri-
veability and automatic transmission
durability, and may damage the
automatic transmission. Damage
caused by the use of fluid other than
as recommended is not covered by
the INFINITI new vehicle limited
warranty.
SDI1765A
Check the fluid level in the reservoir.
The fluid level should be checked using the
HOT range (
: HOT MAX.,: HOT MIN.) at
fluid temperatures of 122 to 176°F (50 to
80°C) or using the COLD range (
: COLD
MAX.,: COLD MIN.) at fluid temperatures
of 32 to 86°F (0 to 30°C).
If the fluid is below the MIN line, add
Genuine NISSAN PSF or equivalent. Remove
the cap and fill through the opening.
CAUTION
. Do not overfill.
AUTOMATIC TRANSMISSION
FLUID (ATF) POWER STEERING FLUID

.Use Genuine NISSAN PSF or equiva-
lent. For further brake fluid specification infor-
mation, see “Capacities and recommended
fluids/lubricants” (P.10-2).
WARNING
.
Use only new fluid from a sealed
container. Old, inferior or contami-
nated fluid may damage the brake
system. The use of improper fluids
can damage the brake system and
affect the vehicle’s stopping ability.
. Be sure to clean the filler cap before
removing.
. Brake fluid is poisonous and should
be stored carefully in marked con-
tainers out of the reach of children.
CAUTION
.Do not add brake fluid with the
ignition switch in the ON position or
the engine running. Doing so could
make the brake fluid overfill when the
ignition switch is turned off.
. Do not spill the fluid on painted
surfaces. This will damage the paint.
If fluid is spilled, wash the surface
with water.
SDI2513
BRAKE FLUID
Check the fluid level in the reservoir. If the
fluid is below the MIN lineor the brake
warning light comes on, add Genuine
NISSAN Super Heavy Duty Brake Fluid or
equivalent DOT 3fluid up to the MAX line
.
To add brake fluid:
1. Be sure the ignition switch is in the OFF or LOCK position.
2. Depress and release the foot brake pedal more than 40 times.
3. Open the reservoir filler cap and add brake fluid up to the MAX line
. (See
“Capacities and recommended fluids/
lubricants” (P.10-2) for the recom-
Do-it-yourself8-9
BRAKE FLUID

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 fuseswitch, 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 tabs
found 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.
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
Do-it-yourself8-21
INTELLIGENT KEY BATTERY
REPLACEMENT

11-2
Cargo light ............................................................. 2-75
Catalytic converter, Three way catalyst ......... 5-4
Center ventilators ................................................ 4-27
Child restraints ...................................................... 1-31Booster seats .................................................. 1-48
LATCH system ............................................... 1-33
Precautions on child restraints .................. 1-31
Top tether strap ............................................. 1-36
Child safety ........................................................... 1-29
Child safety rear door lock .................................. 3-6
Chimes Audible reminders .......................................... 2-19
Seat belt warning light and chime ............ 2-14
Circuit breaker, Fusible link .............................. 8-19
Cleaning exterior and interior .................... 7-2, 7-5
Climate control Automatic air conditioner ........................... 4-29
Automatic climate control ......................... 4-28
Clock ........................................................................\
2-33
Coat hooks ............................................................ 2-65
Cockpit ...................................................................... 2-3
Cold weather driving ........................................ 5-128
Console box ........................................................... 2-63
Console light ......................................................... 2-73
Coolant
Capacities and
recommended fluids/lubricants ................. 10-2
Changing engine coolant ............................... 8-5
Checking engine coolant level ...................... 8-5
Corrosion protection ............................................. 7-8 Cruise control ....................................................... 5-62
Fixed speed cruise control (on
ICC system) .................................................... 5-80
Intelligent cruise control (ICC) system .... 5-64
Cruise indicator .................................................... 2-26
Cup holders ........................................................... 2-60
Current fuel consumption ................................. 2-31
D
Daytime running light system .......................... 2-45
Dimensions ......................................................... 10-10
Distance Control Assist (DCA) system .......... 5-84
Drive belts .............................................................. 8-13
Drive positioner ................................................... 3-40
Driving Cold weather driving ................................. 5-128
Driving with automatic transmission ....... 5-18
On-pavement and off-road driving ........... 5-8
Precautions when starting and driving ..... 5-4
Safety precautions ........................................ 5-10
E
E-Call (SOS) Button ........................................... 2-59
Economy, Fuel .................................................... 5-113
Elapsed time ......................................................... 2-31
Elapsed time and trip odometer ..................... 2-31
Emission control information label ............... 10-12
Emission control system warranty .............. 10-32
EngineBefore starting the engine .......................... 5-15 Break-in schedule ........................................ 5-111
Capacities and
recommended fluids/lubricants ................. 10-2
Changing engine coolant ............................... 8-5
Changing engine oil and filter ...................... 8-6
Checking engine coolant level ...................... 8-5
Checking engine oil level ............................... 8-6
Coolant temperature gauge ......................... 2-8
Emergency engine shut off ......................... 5-14
Engine block heater .................................... 5-129
Engine compartment check locations ........ 8-3
Engine cooling system ................................... 8-4
Engine oil ........................................................... 8-6
Engine oil and oil
filter recommendation .................................. 10-6
Engine oil viscosity ........................................ 10-7
Engine serial number ................................. 10-12
Engine specifications ................................... 10-8
Engine start operation indicator ............... 2-24
If your vehicle overheats ............................. 6-14
Oil pressure gauge .......................................... 2-9
Protection mode ............................................ 5-17
Starting the engine ....................................... 5-15
Entry/exit function, Automatic
drive positioner ................................................... 3-40
Event Data Recorders (EDR) ........................ 10-35
Exhaust gas (carbon monoxide) ........................ 5-4
Explanation of scheduled
maintenance items ................................................. 9-5
Extended storage switch .................................. 8-20

11-4
INFINITI InTouch™ Owner’s Manual ............... 4-2
INFINITI Vehicle Immobilizer System ............ 2-35
Inside mirror .......................................................... 3-30
Inspection/maintenance (I/M) test ............. 10-34
Instrument brightness control ......................... 2-46
Instrument panel ..................................................... 2-5
Intelligent cruise control (ICC) system .......... 5-64
Intelligent Key .......................................................... 3-2
Intelligent Key system ........................................... 3-7Battery replacement ..................................... 8-21
Key operating range ....................................... 3-9
Key operation ................................................. 3-10
Warning signals .............................................. 3-12
Interior light replacement .................................. 8-24
Interior light switch ............................................. 2-73
Interior lights ......................................................... 2-72
ISOFIX child restraint ......................................... 1-33
J
Jump starting ......................................................... 6-11
K
Keyless entry (See remote keyless
entry system) ........................................................ 3-15
Keys ........................................................................\
.... 3-2 For Intelligent Key system ............................. 3-7
L
Labels
Air 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 ............................. 8-28, 10-13
Vehicle identification number (VIN) ....... 10-11
Lane Departure Warning (LDW)/
Lane Departure Prevention (LDP) ................ 5-22
LATCH system ..................................................... 1-33
License plate, Installing front
license plate ......................................................... 10-15
Liftgate ................................................................... 3-22
Light
Air bag warning light .................................... 1-69
Bulb replacement ........................................... 8-23
Cargo light ....................................................... 2-75
Fog light switch ............................................. 2-47
Headlight switch ........................................... 2-40
Headlights bulb replacement .................... 8-24
Interior light switch ....................................... 2-73
Interior lights ................................................... 2-72
Map lights ........................................................ 2-74
Replacement ................................................... 8-23
Vanity mirror lights ....................................... 2-74 Warning lights, indicator lights and
audible reminders .......................................... 2-11
Lights, Exterior and interior
light replacement ................................................. 8-24
Loading information (See vehicle
loading information) ......................................... 10-15
Lock
Automatic door locks ..................................... 3-6
Door locks .......................................................... 3-4
Liftgate lock .................................................... 3-22
Power door lock ............................................... 3-4
Locking with mechanical key ............................. 3-4
Loose Fuel Cap warning ................................... 3-26
Low tire pressure warning light ...................... 2-16
Low tire pressure warning system (See tire
pressure monitoring system (TPMS)) ............... 5-5
Luggage hooks ..................................................... 2-66
M
Maintenance Battery .............................................................. 8-11
General maintenance ...................................... 9-2
Inside the vehicle ............................................. 9-3
Maintenance precautions .............................. 8-2
Maintenance requirements ........................... 9-2
Maintenance schedules ................................. 9-6
Outside the vehicle ......................................... 9-2
Seat belt maintenance ................................. 1-28
Standard maintenance .................................... 9-7
Maintenance schedules ........................................ 9-6
Malfunction indicator light (MIL) ..................... 2-17