2021 INFINITI QX80 maintenance

SONAR SYSTEM LIMITATIONS
WARNING
Listed below are the system limitations
for the sonar function. Failure to operate
the vehicle in accordance with these
system limitations could result in serious
injury or death.
.Inclement weather or ultrasonic
sources such as an automatic car
wash, a truck’s compressed-air
brakes or a pneumatic drill may affect
the function of the system, including
reduced performance or a false acti-
vation.
. The system is not designed to pre-
vent contact with small or moving
objects.
. The system will not detect small
objects below the bumper, and may
not detect objects close to the bum-
per or on the ground.
. The system may not detect the
following objects:
— Fluffy objects such as snow, cloth, cotton, grass or wool.
— Thin objects such as rope, wire or chain. — Wedge-shaped objects.
. If your vehicle sustains damage to the
bumper fascia, leaving it misaligned
or bent, the sensing zone may be
altered causing inaccurate measure-
ment of objects or false alarms.
CAUTION
Excessive noise (such as audio system
volume or an open vehicle window) will
interfere with the tone and it may not be
heard.
System temporarily unavailable
When the amber markers are displayed at
the corners of the vehicle icon and the
function cannot be activated from the
Parking sonar settings menu (the setting
items are grayed out), the sonar system may
be malfunctioning.
SYSTEM MAINTENANCE
CAUTION
Keep the surface of the sonar (located on
the front and rear bumper fascia) free
from accumulations of snow, ice and dirt.
Do not scratch the surface of the sonar
when cleaning. If the sensors are cov-
ered, the accuracy of the sonar function
will be diminished.
Monitor, climate, audio, phone and voice recognition systems4-21

4-26Monitor, climate, audio, phone and voice recognition systems
— When camera orientation is not inits usual position, such as when
mirror is folded.
— When there is dirt, water drops or snow on the camera lens.
— When the position of the moving objects in the display is not chan-
ged.
. The MOD system might detect flow-
ing water droplets on the camera
lens, white smoke from the muffler,
moving shadows, etc.
. The MOD system may not function
properly depending on the speed,
direction, distance or shape of the
moving objects.
. If your vehicle sustains damage to the
parts where the camera is installed,
leaving it misaligned or bent, the
sensing zone may be altered and the
MOD system may not detect objects
properly.
. When the temperature is extremely
high or low, the screen may not
display objects clearly. This is not a
malfunction.
WAE0291X
SYSTEM MAINTENANCE
CAUTION
.Do not use alcohol, benzine or thinner
to clean the camera. This will cause
discoloration.
. Do not damage the camera as the
monitor screen may be adversely
affected.
If dirt, rain or snow accumulates on any of
the cameras
, the MOD system may not
operate properly. Clean the camera by
wiping with a cloth dampened with a diluted mild cleaning agent and then wiping with a
dry cloth.

4-36Monitor, climate, audio, phone and voice recognition systems
Turning the system off
Use the following methods to turn the rear
automatic air conditioning system off.
.Operating the front air conditioner con-
trol panel:
Push the ON/OFF button on the front
air conditioner control panel when the
Rear climate screen is displayed.
. Operating the Rear climate screen:
Touch the “ON/OFF” key on the Rear
climate screen when the rear automatic
air conditioning system is on.
. Operating the rear air conditioner control
panel:
Push the “
” on/off button on the rear
air conditioner control panel when the
Rear climate screen is not displayed.
WAE0285X
SAA3058
OPERATING TIPS
When the engine coolant temperature and
outside air temperature are low, the air flow
from the foot outlets may not operate.
However, this is not a malfunction. After
the coolant temperature warms up, the air
flow from the foot outlets will operate
normally.
The sensors
andlocated on the instru-
ment panel help maintain a constant tem-
perature. Do not put anything on or around
the sensors.
IN-CABIN MICROFILTER
Models without Advanced Climate Control
System:
The climate control system is equipped with
an in-cabin microfilter which collects dirt,
pollen, dust, etc.
Models with Advanced Climate Control
System:
The climate control system is equipped with
a natural grape seed polyphenol filter which
collects and neutralizes dirt, pollen, dust, etc.
To make sure the air conditioner heats,
defogs, and ventilates efficiently, replace
the filter in accordance with the specified
maintenance intervals listed in the “9. Main-
tenance and schedules” section. If replace-
ment is required, it is recommended you visit

5 Starting and driving
Precautions when starting and driving ...................... 5-4Exhaust gas (carbon monoxide) .............................. 5-4
Three-way catalyst ..................................................... 5-4
Tire Pressure Monitoring System (TPMS) ........... 5-5
Avoiding collision and rollover ................................. 5-8
On-pavement and off-road
driving precautions ..................................................... 5-8
Off-road recovery ....................................................... 5-9
Rapid air pressure loss ............................................... 5-9
About lowering of the rear of the vehicle ......... 5-10
Drinking alcohol/drugs and driving ..................... 5-10
Driving safety precautions ..................................... 5-10
Push-button ignition switch ........................................ 5-12
Operating range for engine start function ........ 5-12
Push-button ignition switch positions ................ 5-13
Emergency engine shut off .................................... 5-14
Intelligent Key battery discharge .......................... 5-14
Before starting the engine ........................................... 5-15
Starting the engine ......................................................... 5-15 Remote start (if so equipped) ................................ 5-16
Driving the vehicle .......................................................... 5-17 Engine protection mode .......................................... 5-17
Automatic transmission ........................................... 5-18
Parking brake ................................................................... 5-22 Lane Departure Warning (LDW)/Lane Departure
Prevention (LDP) (if so equipped) ............................. 5-22
LDW system operation ......................................... 5-24
Turning the LDW system ON/OFF ................... 5-25
How to enable/disable the LDW system ........ 5-26
LDP system operation (if so equipped) ............ 5-26
Turning the LDP system ON/OFF (if
so equipped) ............................................................. 5-27
How to enable/disable the LDP system (if
so equipped) ............................................................. 5-28
LDW/LDP (if so equipped)
system limitations ................................................... 5-28
System temporarily unavailable .......................... 5-29
System malfunction ............................................... 5-30
System maintenance ............................................. 5-30
Blind Spot Warning (BSW) ......................................... 5-31
BSW system operation .......................................... 5-33
Turning the BSW system ON/OFF ................... 5-34
How to enable/disable the BSW system ......... 5-34
BSW system limitations ........................................ 5-35
BSW driving situations .......................................... 5-36
System temporarily unavailable .......................... 5-39
System malfunction ............................................... 5-40
System maintenance ............................................. 5-40

Blind Spot Intervention®(BSI) (if so equipped) ...... 5-41
BSI system operation ............................................... 5-43
Turning the BSI system ON/OFF ....................... 5-44
How to enable/disable the BSI system .............. 5-45
BSI system limitations ............................................. 5-45
BSI driving situations ............................................... 5-46
System temporarily unavailable ............................ 5-51
System malfunction .................................................. 5-51
System maintenance ................................................ 5-52
Back-up Collision Intervention (BCI) ......................... 5-53 BCI system operation .............................................. 5-55
How to enable/disable the BCI system ............. 5-58
BCI system precautions ........................................... 5-59
System temporarily unavailable ........................... 5-60
System malfunction .................................................. 5-61
System maintenance ................................................ 5-61
Cruise control (if so equipped) .................................... 5-62 Precautions on cruise control ................................ 5-62
Cruise control operations ....................................... 5-63
Intelligent Cruise Control (ICC) (if so equipped) ..... 5-64 How to select the cruise control mode ............... 5-66
Vehicle-to-vehicle distance control mode ......... 5-66
Conventional (fixed speed) cruise
control mode ............................................................. 5-80
Distance Control Assist (DCA) (if so equipped) .... 5-84 DCA system operation ........................................... 5-86
Turning the DCA system ON/OFF ...................... 5-89
How to enable/disable the DCA system .......... 5-90 DCA system display and indicators ................... 5-91
DCA system limitations ......................................... 5-91
System temporarily unavailable .......................... 5-93
System malfunction ................................................ 5-94
Sensor maintenance ............................................... 5-95
Forward Emergency Braking (FEB) with
pedestrian detection ..................................................... 5-95 FEB with pedestrian detection
system operation ..................................................... 5-97
Turning the FEB with pedestrian detection
system ON/OFF ..................................................... 5-98
FEB with pedestrian detection
system limitations ................................................... 5-98
System temporarily unavailable ....................... 5-101
System malfunction ............................................. 5-102
System maintenance ........................................... 5-103
Predictive Forward Collision
Warning (PFCW) ......................................................... 5-103
PFCW system operation .................................... 5-105
Turning the PFCW system ON/OFF ............. 5-105
PFCW system limitations .................................. 5-108
System temporarily unavailable ....................... 5-110
System malfunction ............................................. 5-110
System maintenance ............................................ 5-111
Break-in schedule ......................................................... 5-111
Fuel efficient driving tips ........................................... 5-112
Increasing fuel economy ............................................ 5-113
INFINITI all-mode 4WD
®(if so equipped) ........... 5-113
INFINITI all-mode 4WD®system .................... 5-114

CAUTION
.Do not use leaded gasoline. Deposits
from leaded gasoline seriously reduce
the three-way catalyst’s ability to
help reduce exhaust pollutants.
. Keep your engine tuned up. Malfunc-
tions in the ignition, fuel injection, or
electrical systems can cause overrich
fuel flow into the three-way catalyst,
causing it to overheat. Do not keep
driving if the engine misfires, or if
noticeable loss of performance or
other unusual operating conditions
are detected. Have the vehicle in-
spected promptly. It is recommended
you visit an INFINITI retailer for this
service.
. Avoid driving with an extremely low
fuel level. Running out of fuel could
cause the engine to misfire, damaging
the three-way catalyst.
. Do not race the engine while warming
it up.
. Do not push or tow your vehicle to
start the engine.
TIRE PRESSURE MONITORING
SYSTEM (TPMS)
Each tire, including the spare (if provided),
should be checked monthly when cold and
inflated to the inflation pressure recom-
mended by the vehicle manufacturer on the
vehicle placard or tire inflation pressure
label. (If your vehicle has tires of a different
size than the size indicated on the vehicle
placard or tire inflation pressure label, you
should determine the proper tire inflation
pressure for those tires.)
As an added safety feature, your vehicle has
been equipped with a Tire Pressure Mon-
itoring System (TPMS) that illuminates a low
tire pressure telltale when one or more of
your tires is significantly under-inflated.
Accordingly, when the low tire pressure
telltale illuminates, you should stop and
check your tires as soon as possible, and
inflate them to the proper pressure. Driving
on a significantly under-inflated tire causes
the tire to overheat and can lead to tire
failure. Under-inflation also reduces fuel
efficiency and tire tread life, and may affect
the vehicle’s handling and stopping ability.
Please note that the TPMS is not a sub-
stitute for proper tire maintenance, and it is
the driver’s responsibility to maintain correct
tire pressure, even if under-inflation has not
reached the level to trigger illumination of the TPMS low tire pressure telltale.
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate
when the system is not operating properly.
The TPMS malfunction indicator is com-
bined with the low tire pressure telltale.
When the system detects a malfunction, the
telltale will flash for approximately one
minute and then remain continuously illumi-
nated. This sequence will continue upon
subsequent vehicle start-ups as long as the
malfunction exists. When the malfunction
indicator is illuminated, the system may not
be able to detect or signal low tire pressure
as intended. TPMS malfunctions may occur
for a variety of reasons, including the
installation of replacement or alternate tires
or wheels on the vehicle that prevent the
TPMS from functioning properly. Always
check the TPMS malfunction telltale after
replacing one or more tires or wheels on your
vehicle to ensure that the replacement or
alternate tires and wheels allow the TPMS
to continue to function properly.
Additional information
.
Since the spare tire is not equipped with
the TPMS, the TPMS does not monitor
the tire pressure of the spare tire.
. The TPMS will activate only when the
vehicle is driven at speeds above 16
MPH (25 km/h). Also, this system may
Starting and driving5-5

5-12Starting and driving
it rolls forward, backward or side-
ways, you could be injured.
. Whenever you drive off-road
through sand, mud or water as deep
as the wheel hub, more frequent
maintenance may be required. See
the maintenance schedules shown in
the "9. Maintenance and schedules"
section.
. Spinning the rear wheels on slippery
surfaces may cause the 4WD warn-
ing light to flash. The 4WD system
may also automatically switch from
the 4WD mode to the 2WD mode.
This could reduce traction. Be espe-
cially careful when towing a trailer
(4WD models).WARNING
Do not operate the push-button ignition
switch while driving the vehicle except in
an emergency. (The engine will stop
when the ignition switch is pushed 3
consecutive times or the ignition switch
is pushed and held for more than 2
seconds.) If the engine stops while the
vehicle is being driven, this could lead to
a crash and serious injury.
Before operating the push-button ignition
switch, be sure to move the shift lever to the
P (Park) position.
SSD0436
OPERATING RANGE FOR EN-
GINE START FUNCTION
The operating range for starting the engine
inside the vehicleis shown in the illustra-
tion.
. If the Intelligent Key is on the instrument
panel, cargo area, inside the glove box or
door pocket, or the corner of interior
compartment, it may not be possible to
start the engine.
. If the Intelligent Key is near the door or
door glass outside the vehicle, it may be
possible to start the engine.
PUSH-BUTTON IGNITION SWITCH

5-30Starting and driving
Condition C
If the following messages appear in the
vehicle information display, a chime will
sound and the LDP system (if so equipped)
will be turned off automatically.
.“Not available: Poor Road Conditions”:
— When the VDC system (except TCS function) or ABS operates.
. “Currently unavailable”:
— When the VDC system is turned off.
— When the SNOW mode is selected.
— When the 4WD shift switch is in the 4H or 4L position. (4WD models)
Action to take:
When the above conditions no longer exist,
turn off the LDP system (if so equipped) by
pushing the dynamic driver assistance
switch. Push the dynamic driver assistance
switch again to turn the LDP system (if so
equipped) back on.
Temporary disabled status at high
temperature
If the vehicle is parked in direct sunlight
under high temperature conditions (over
approximately 104°F (40°C)) and then
started, the LDW and LDP (if so equipped)
systems may be deactivated automatically
and the following message will appear in the
vehicle information display: “Not available: High Camera Temp”
When the interior temperature is reduced,
the LDW system will resume operating
automatically.
For the LDP system (if so equipped), when
the interior temperature is reduced, turn off
the LDP system by pushing the dynamic
driver assistance switch. Push the dynamic
driver assistance switch again to turn the
LDP system back on.
SYSTEM MALFUNCTION
When the LDW and/or LDP (if so equipped)
system malfunctions, it will turn off auto-
matically. The “Malfunction” warning mes-
sage and LDW indicator (orange) will appear
in the vehicle information display.
Action to take:
Stop the vehicle in a safe location, place the
vehicle in the P (Park) position, turn the
engine off and restart the engine. If the
message and LDW indicator (orange) con-
tinue to appear, have the system checked. It
is recommended you visit an INFINITI re-
tailer for this service.SSD0453
SYSTEM MAINTENANCE
The lane camera unitfor the LDW/LDP (if
so equipped) systems is located above the
inside mirror.
To keep the proper operation of the LDW/
LDP (if so equipped) systems and prevent a
system malfunction, be sure to observe the
following:
. Always keep the windshield clean.
. Do not attach a sticker (including trans-
parent material) or install an accessory
near the camera unit.
. Do not place reflective materials, such as
white paper or a mirror, on the instru-
ment panel. The reflection of sunlight