2021 INFINITI QX80 ECU

1-48Safety — seats, seat belts and supplemental restraint system
JVR0621X
3rd row bench seat
Installing top tether strap
WARNING
In the 3rd row bench seat, a child
restraint with a top tether strap can
only be used in the outboard seating
position (right side). Do not place it in
the outboard seating position (left side)
and center position and attempt to angle
the tether strap to the outboard seating
position (right side).
First, secure the child restraint with the seat belt.
1. If necessary, raise or remove the head
restraint or headrest to position the top
tether strap over the top of the seatback.
If the head restraint or headrest is
removed, store it in a secure place. Be
sure to reinstall the head restraint or
headrest when the child restraint is
removed. See “Head restraints/head-
rests” (P.1-13) for head restraint or
headrest adjustment, removal and in-
stallation information.
2. Secure the tether strap to the tether anchor point on the back of each seat-
back (2nd row seat) or right side seat-
back (3rd row bench seat) behind the
child restraint.
3. Tighten the tether strap according to the manufacturer’s instructions to remove
any slack. Make sure the head restraint
or headrest does not contact the top
tether strap.
If you have any questions when installing a
top tether strap on the rear seat, it is
recommended you visit an INFINITI retailer
for this service.
BOOSTER SEATS
Precautions on booster seats
WARNING
If a booster seat and seat belt are not
used properly, the risk of a child being
injured in a sudden stop or collision
greatly increases:
. Make sure the shoulder portion of
the belt is away from the child’s face
and neck and the lap portion of the
belt does not cross the stomach.
. Make sure the shoulder belt is not
behind the child or under the child’s
arm.
. A booster seat must only be installed
in a seating position that has a lap/
shoulder belt.

1-50Safety — seats, seat belts and supplemental restraint system
Booster seat installation
CAUTION
Do not use the lap/shoulder belt Auto-
matic Locking Retractor (ALR) mode
when using a booster seat with the seat
belts.
Refer to all Warnings and Cautions in the
“Child safety”, “Child restraints” and “Boos-
ter seats” sections earlier in this section
before installing a child restraint.
Follow these steps to install a booster seat in
the rear seat or in the front passenger seat:
SSS0640
1. If you must install a booster seat in the
front seat, move the seat to the rear-
most position.
2. Position the booster seat on the seat. Only place it in a forward-facing direc-
tion. Always follow the booster seat
manufacturer’s instructions.
LRS0454
Front passenger position
3. The booster seat should be positioned on the vehicle seat so that it is stable.
If necessary, adjust or remove the head
restraint or headrest to obtain the
correct booster seat fit. If the head
restraint or headrest is removed, store
it in a secure place. Be sure to reinstall
the head restraint or headrest when the
booster seat is removed. See “Head
restraints/headrests” (P.1-13) for head
restraint or headrest adjustment, re-
moval and installation information.
If the seating position does not have an
adjustable head restraint or a headrest
and it is interfering with the proper

indicate that the front passenger air bag
is operational.
In addition to the above, certain objects
placed on the front passenger seat may also
cause the light to operate as described
above depending on their weight.
For additional information related to the
normal operation and troubleshooting of
this occupant classification sensor system,
please refer to “Normal operation” (P.1-62)
and “Troubleshooting” (P.1-62) in this sec-
tion.
Front passenger air bag:
The front passenger air bag is designed to
automatically turn OFF when the vehicle is
operated under some conditions as de-
scribed below as permitted by U.S. regula-
tions. If the front passenger air bag is OFF, it
will not inflate in a crash. The driver air bag
and other air bags in your vehicle are not
part of this system.
The purpose of the regulation is to help
reduce the risk of injury or death from an
inflating air bag to certain front passenger
seat occupants, such as children, by requiring
the air bag to be automatically turned OFF.
The occupant classification sensors (weight
sensors) are on the seat cushion frame under
the front passenger seat and are designed to
detect an occupant and objects on the seat.
For example, if a child is in the front passenger seat, the Advanced Air Bag
System is designed to turn the passenger
air bag OFF in accordance with the regula-
tions. Also, if a child restraint of the type
specified in the regulations is on the seat, the
occupant classification sensors can detect it
and cause the air bag to turn OFF.
Front passenger seat adult occupants who
are properly seated and using the seat belt
as outlined in this manual should not cause
the passenger air bag to be automatically
turned OFF. For small adults it may be
turned OFF, however, if the occupant does
not sit in the seat properly (for example, by
not sitting upright, by sitting on an edge of
the seat, or by otherwise being out of
position), this could cause the sensor to turn
the air bag OFF. Always be sure to be seated
and wearing the seat belt properly for the
most effective protection by the seat belt
and supplemental air bag.
INFINITI recommends that pre-teens and
children be properly restrained in a rear seat.
INFINITI also recommends that appropriate
child restraints and booster seats be prop-
erly installed in a rear seat. If this is not
possible, the occupant classification sensors
are designed to operate as described above
to turn the front passenger air bag OFF for
specified child restraints. Failing to properly
secure child restrains and to use the ALR
mode may allow the restraint to tip or move
in an accident or sudden stop. This can also
result in the passenger air bag inflating in a
crash instead of being OFF. (See “Child
restraints” (P.1-31) for proper use and
installation.)
If the front passenger seat is not occupied,
the passenger air bag is designed not to
inflate in a crash. However, heavy objects
placed on the seat could result in air bag
inflation, because of the object being de-
tected by the occupant classification sen-
sors. Other conditions could also result in air
bag inflation, such as if a child is standing on
the seat, or if two children are on the seat,
contrary to the instructions in this manual.
Always be sure that you and all vehicle
occupants are seated and restrained prop-
erly.
Using the front passenger air bag status
light, you can monitor when the front
passenger air bag is automatically turned
OFF with the seat occupied. The light will
not illuminate when the front passenger seat
is unoccupied.
If an adult occupant is in the seat but the
front passenger air bag status light is
illuminated (indicating that the air bag is
OFF), it could be that the person is a small
adult, or is not sitting on the seat properly.
If a child restraint must be used in the front
seat, the front passenger air bag status light
Safety — seats, seat belts and supplemental restraint system1-61

2 Instruments and controls
Cockpit ........................................................................\
......... 2-3
Instrument panel ............................................................... 2-5
Meters and gauges .......................................................... 2-6Speedometer and odometer ..................................... 2-7
Tachometer ................................................................... 2-8
Engine coolant temperature gauge ....................... 2-8
Fuel gauge ..................................................................... 2-9
Engine oil pressure gauge ......................................... 2-9
Voltmeter ..................................................................... 2-10
Warning lights, indicator lights and audible
reminders ........................................................................\
... 2-11 Checking lights ........................................................... 2-12
Warning/indicator lights (red) ............................... 2-12
Warning/indicator lights (yellow) ......................... 2-15
Warning/indicator lights (other) ........................... 2-19
Audible reminders ..................................................... 2-19
Vehicle information display .......................................... 2-20 Operational indicators ............................................. 2-24
Trip computer ............................................................. 2-31
Clock and outside air temperature ....................... 2-33
Security systems ............................................................. 2-34 Vehicle Security System .......................................... 2-34
INFINITI Vehicle Immobilizer System .................. 2-35
Wiper and washer switch ............................................. 2-36 Washer operation ..................................................... 2-37 Rain-sensing auto wiper system ........................ 2-38
Rear window wiper and washer operation ..... 2-39
Rear window and outside mirror
defroster switch ............................................................. 2-39 Rear window and outside mirror defroster ..... 2-39
Headlight and turn signal switch .............................. 2-40
Headlight switch .................................................... 2-40
Headlight washer (if so equipped) ..................... 2-45
Instrument brightness control ............................. 2-46
Turn signal switch ................................................... 2-46
Fog light switch ....................................................... 2-47
Heated steering wheel ................................................. 2-47
Horn ........................................................................\
.......... 2-48
Heated seats .................................................................. 2-48 Front ........................................................................\
... 2-49
Rear (if so equipped) ............................................. 2-50
Climate controlled seats (if so equipped) ............... 2-50
Warning systems switch .............................................. 2-52
SNOW mode switch ..................................................... 2-52
TOW mode switch ......................................................... 2-53
Vehicle Dynamic Control (VDC) OFF switch ......... 2-53
Rear door alert ................................................................ 2-54 Turning the rear door alert
system ON/OFF ..................................................... 2-54
System operation .................................................... 2-55

Warning indicator light (red)Warning indicator light (yellow)Vehicle Dynamic Control (VDC) off in-
dicator light
Automatic Transmission (AT) oil tem-
perature warning lightAdaptive Front lighting System (AFS)
indicator light (if so equipped)Vehicle Dynamic Control (VDC) warning
light
Automatic Transmission (AT) park
warning lightAnti-lock Braking System (ABS) warning
lightWarning indicator light (other)
Exterior light indicator
Brake warning lightAutomatic transmission check warning
lightFront fog light indicator light
Charge warning lightCheck suspension indicator lightFront passenger air bag status light
Engine oil pressure warning lightFour-Wheel Drive (4WD) warning light
(4WD models)High beam assist indicator light
Master warning lightForward Emergency Braking (FEB) sys-
tem warning lightHigh beam indicator light
Seat belt warning light and chimeLow tire pressure warning lightTOW mode indicator light
Security indicator lightMalfunction Indicator Light (MIL)Turn signal/hazard indicator lights
Supplemental air bag warning lightMaster warning light
Instruments and controls2-11
WARNING LIGHTS, INDICATOR
LIGHTS AND AUDIBLE REMINDERS

2-12Instruments and controls
CHECKING LIGHTS
With all doors closed, apply the parking
brake, fasten the seat belts and place the
ignition switch in the ON position without
starting the engine. The following lights (if
so equipped) will come on:
,or,,,,
The following lights (if so equipped) will
come on briefly and then go off:
,or,,,,,,
If any light does not come on or operates in a
way other than described, it may indicate a
burned-out bulb and/or a system malfunc-
tion. Have the system checked. It is recom-
mended you visit an INFINITI retailer for this
service.
Some indicators and warnings are also
displayed on the vehicle information display
between the speedometer and tachometer.
(See “Vehicle information display” (P.2-20).)
WARNING/INDICATOR LIGHTS
(red)
See “Vehicle information display” (P.2-20).
Automatic Transmission (AT)
oil temperature warning light
This light illuminates when the Automatic
Transmission (AT) oil temperature is too
high. If the light illuminates while driving,
reduce the vehicle speed as soon as safely
possible until the light turns off.
CAUTION
Continued vehicle operation when the
AT oil temperature warning light is on
may damage the AT.
Automatic Transmission (AT)
park warning light (4WD models)
This light indicates that the Automatic
Transmission (AT) parking function is not
engaged. If the transfer control is not
secured in any driving position while the AT
shift lever is in the P (Park) position, the
transmission will disengage and the wheels
will not lock. If the AT park warning light illuminates with
the shift lever in the P (Park) position, shift
the Four-Wheel Drive (4WD) shift switch
to the AUTO, 4H or 4L position again with
the shift lever in the N (Neutral) position.
(See “INFINITI all-mode 4WD
®” (P.5-113).)
orBrake warning light
This light functions for both the parking
brake and the foot brake systems.
Parking brake indicator:
When the ignition switch is in the ON
position, the light comes on when the
parking brake is applied.
Low brake fluid warning light:
When the ignition switch is in the ON
position, the light warns of a low brake fluid
level. If the light comes on while the engine is
running with the parking brake not applied,
stop the vehicle and perform the following:
1. Check the brake fluid level. If brake fluid
is low, add fluid and have the system
checked. It is recommended you have this
service performed by an INFINITI retai-
ler. (See “Brake fluid” (P.8-9).)
2. If the brake fluid level is correct, have the warning system checked. It is recom-
mended you have this service performed
by an INFINITI retailer.

2-14Instruments and controls
Master warning light
When the ignition switch is in the ON
position, the master warning light illumi-
nates when a warning message appears in
the vehicle information display.
See “Vehicle information display” (P.2-20).
Seat belt warning light and
chime
For driver and front passenger:
The light and chime remind you to fasten the
driver and front passenger seat belts.
The light illuminates whenever the ignition
switch is pushed to the ON position, and will
remain illuminated until the front seat belts
are fastened.
When the vehicle speed exceeds approxi-
mately 10 MPH (15 km/h), the light will blink
unless the front seat belts are securely
fastened.
When the ignition switch is pushed to the
ON position, the chime will sound for
approximately 6 seconds unless the driver’s
seat belt is securely fastened.
When the vehicle speed exceeds approxi-
mately 10 MPH (15 km/h), the chime will
sound unless the front seat belts are securely
fastened. The chime will continue to sound for approximately 95 seconds until the front
seat belts are fastened.
For rear passengers:
The seat belt warning light for the rear
passengers will illuminate whenever the
ignition switch is pushed to the ON position,
and will remain illuminated until the rear
passenger’s seat belts are fastened.
For approximately 65 seconds after the
ignition switch is in the ON position, the
system does not activate the warning light
for the rear passengers.
If a rear passenger seat belt is fastened then
unfastened at a vehicle speed less than
approximately 10 MPH (15 km/h), the
warning light will illuminate. When the
vehicle speed exceeds approximately 10
MPH (15 km/h), the warning light will blink
and the chime will sound.
The warning will turn off when a rear
passenger seat belt is fastened or automa-
tically turn off approximately 65 seconds
after the seat belt is unfastened.
See “Seat belts” (P.1-18) for precautions on
seat belt usage.
Security indicator light
The light blinks when the ignition switch is in
the ACC, OFF and LOCK position. This
function indicates the security systemequipped on the vehicle is operational.
If the security system is malfunctioning, this
light will remain on while the ignition switch
is in the ON position. For additional informa-
tion, see “Security systems” (P.2-34).
Supplemental air bag warning
light
After pushing the ignition switch to the ON
position, the supplemental air bag warning
light will illuminate. The supplemental air bag
warning light will turn off after about 7
seconds if the air bag and/or pretensioner
systems are operational.
If any of the following conditions occur, the
air bag and/or pretensioner systems needs
servicing.
. The supplemental air bag warning light
remains on after approximately 7 sec-
onds.
. The supplemental air bag warning light
flashes intermittently.
. The supplemental air bag warning light
does not come on at all.
It is recommended you visit an INFINITI
retailer for these services.
Unless checked and repaired, the supple-
mental restraint system (air bag system)
and/or the pretensioners may not function
properly.

parking brake is applied. Stop the vehicle and
release the parking brake.
11. Low Fuel
This warning appears when the fuel level in
the tank is getting low. Refuel as soon as it is
convenient, preferably before the fuel gauge
reaches the 0 (Empty) position.
There is a small reserve of fuel remaining in
the tank when the fuel gauge reaches the 0
(Empty) position.
12. Low Washer Fluid
This warning appears when the washer tank
fluid is at a low level. Add washer fluid as
necessary. (See “Window washer fluid” (P.8-
10).)
13. Loose Fuel Cap
This warning appears when the fuel-filler
cap is not tightened correctly after the
vehicle has been refueled. (See “Fuel-filler
cap” (P.3-27).)
14. Tire Pressure Low Add Air
This warning appears when the low tire
pressure warning light in the meter illumi-
nates and low tire pressure is detected. The
warning appears each time the ignition
switch is placed in the ON position as long
as the low tire pressure warning lightremains illuminated. If this warning appears,
stop the vehicle and adjust the tire pressure
to the recommended COLD tire pressure
shown on the Tire and Loading Information
label. (See “Low tire pressure warning light”
(P.2-16) and “Tire Pressure Monitoring
System (TPMS)” (P.5-5).)
15. SNOW mode indicator
This indicator appears when SNOW mode is
selected by the SNOW mode switch. (See
“SNOW mode” (P.5-122).)
16. Four-Wheel Drive (4WD) shift
indicator (4WD models)
This indicator shows the Four-Wheel Drive
(4WD) driving mode (AUTO, 4HI or 4LO)
that is selected by the 4WD shift switch.
(See “INFINITI all-mode 4WD
®” (P.5-113).)
17. Door/liftgate open warning
(ignition switch is in the ON posi-
tion)
This warning appears if any of the doors
and/or the liftgate are open or not closed
securely. The vehicle icon indicates which
door or the liftgate is open on the display.
18. Power will turn off to save the
battery
This warning appears after a period of time
if the ignition switch is in ACC or ON
position.
19. Power turned off to save the
battery
This warning appears after the ignition
switch is automatically turned OFF to save
the battery.
20. Light reminder warning
This warning appears when the driver side
door is opened with the headlight switch is
left ON and the ignition switch is placed in
the OFF or LOCK position. Place the head-
light switch in OFF or AUTO position. For
additional information, see “Headlight and
turn signal switch” (P.2-40).
21. Vehicle ahead detection indica-
tor
This indicator shows the status of the
following systems, if the vehicle is equipped
with them.
.
Forward Emergency Braking (FEB) with
pedestrian detection system
. Predictive Forward Collision Warning
(PFCW)
Instruments and controls2-25