2023 INFINITI QX80 check engine

2-16Instruments and controls
.If the 4WD warning light turns on
when driving on dry or hard surfaced
roads:
— in the 4H(I) position, shift the 4WD shift switch to AUTO
— in the 4L(O) position, stop the vehicle and shift the transmission
shift lever to the N (Neutral)
position and shift the 4WD shift
switch to AUTO
. If the warning light is still on after the
above operations, have your vehicle
checked as soon as possible. It is
recommended you visit an INFINITI
retailer for this service.
Forward Emergency Braking
(FEB) system warning light
This light comes on when the ignition switch
is placed in the ON position. It turns off after
the engine is started.
This light illuminates when the Forward
Emergency Braking (FEB) with Pedestrian
Detection system is set to OFF in the vehicle
information display.
If the light illuminates when the FEB with
Pedestrian Detection system is ON, it may
indicate that the system is unavailable. See “Forward Emergency Braking (FEB) with
Pedestrian Detection system” (P.5-95) for
more details.
Low tire pressure warning light
Your vehicle is equipped with a Tire Pressure
Monitoring System (TPMS) that monitors
the tire pressure of all tires except the spare.
The low tire pressure warning light warns of
low tire pressure or indicates that the TPMS
is not functioning properly.
After the ignition switch is pushed ON, this
light illuminates for about 1 second and
turns off.
Low tire pressure warning:
If the vehicle is being driven with low tire
pressure, the warning light will illuminate. A
"Tire Pressure Low Add Air" warning also
appears in the vehicle information display.
The tire pressure for each tire will also be
displayed.
When the low tire pressure warning light
illuminates, you should stop and adjust the
tire pressure to the recommended COLD tire
pressure shown on the Tire and Loading
Information label. The low tire pressure
warning light may not automatically turn
off when the tire pressure is adjusted. After
the tire is inflated to the recommended
pressure, the vehicle must be driven atspeeds above 16 MPH (25 km/h) to activate
the TPMS and turn off the low tire pressure
warning light. Use a tire pressure gauge to
check the tire pressure.
The "Tire Pressure Low Add Air" warning
appears each time the ignition switch is
placed in the ON position as long as the
low tire pressure warning light remains
illuminated.
For additional information, see “Vehicle
information display” (P.2-20), “Tire Pressure
Monitoring System (TPMS)” (P.5-5) and
“Tire Pressure Monitoring System (TPMS) ”
(P.6-3).
TPMS malfunction:If the TPMS is not functioning properly, the
low tire pressure warning light will flash for
approximately 1 minute when the ignition
switch is pushed ON. The light will remain on
after 1 minute. Have the system checked. It
is recommended you visit an INFINITI re-
tailer for this service. The "Tire Pressure Low
Add Air" warning does not appear if the low
tire pressure warning light illuminates to
indicate a TPMS malfunction.
For additional information, see “Tire Pres-
sure Monitoring System (TPMS)” (P.5-5).

WARNING
.If the light does not illuminate with
the ignition switch pushed ON, have
the vehicle checked as soon as possi-
ble. It is recommended you visit an
INFINITI retailer for this service.
. If the light illuminates while driving,
avoid sudden steering maneuvers or
abrupt braking, reduce vehicle speed,
pull off the road to a safe location
and stop the vehicle as soon as
possible. Driving with under-inflated
tires may permanently damage the
tires and increase the likelihood of
tire failure. Serious vehicle damage
could occur and may lead to an
accident and could result in serious
personal injury. Check the tire pres-
sure for all four tires. Adjust the tire
pressure to the recommended COLD
tire pressure shown on the Tire and
Loading Information label to turn the
low tire pressure warning light OFF.
If the light still illuminates while
driving after adjusting the tire pres-
sure, a tire may be flat or the TPMS
may be malfunctioning. If you have a
flat tire, replace it with a spare tire as
soon as possible. If no tire is flat and
all tires are properly inflated, it is recommended you consult an
INFINITI retailer.
. Since the spare tire is not equipped
with the TPMS, when a spare tire is
mounted or a wheel is replaced, the
TPMS will not function and the low
tire pressure warning light will flash
for approximately 1 minute. The light
will remain on after 1 minute. Have
your tires replaced and/or TPMS
system reset as soon as possible. It
is recommended you visit an INFINITI
retailer for these services.
. Replacing tires with those not origin-
ally specified by INFINITI could affect
the proper operation of the TPMS.
CAUTION
.The TPMS is not a substitute for the
regular tire pressure check. Be sure to
check the tire pressure regularly.
. If the vehicle is being driven at speeds
of less than 16 MPH (25 km/h), the
TPMS may not operate correctly.
. Be sure to install the specified size of
tires to the four wheels correctly.
Malfunction Indicator Light
(MIL)
If the malfunction indicator light comes on
steady or blinks while the engine is running,
it may indicate a potential emission control
malfunction.
The malfunction indicator light may also
come on steady if the fuel-filler cap is loose
or missing, or if the vehicle runs out of fuel.
Check to make sure the fuel-filler cap is
installed and closed tightly, and that the
vehicle has at least 3 US gallons (14 liters) of
fuel in the fuel tank.
After a few driving trips, the
light should
turn off if no other potential emission
control system malfunction exists.
If this indicator light remains on for 20
seconds and then blinks for 10 seconds
when the engine is not running, it indicates
that the vehicle is not ready for an emission
control system inspection/maintenance test.
(See “Readiness for Inspection/Mainte-
nance (I/M) test” (P.10-34).)
Operation:
The malfunction indicator light will come on
in one of two ways:
. Malfunction indicator light on steady —
An emission control system malfunction
has been detected. Check the fuel-filler
Instruments and controls2-17

2-18Instruments and controls
cap if the Loose Fuel Cap warning
appears in the vehicle information dis-
play. If the fuel-filler cap is loose or
missing, tighten or install the cap and
continue to drive the vehicle. The
light should turn off after a few driving
trips. If thelight does not turn off
after a few driving trips, have the vehicle
inspected. It is recommended you visit an
INFINITI retailer for this service. You do
not need to have your vehicle towed to
the retailer.
. Malfunction indicator light blinking — An
engine misfire has been detected which
may damage the emission control sys-
tem.
To reduce or avoid emission control
system damage:
1) Do not drive at speeds above 45 MPH (72 km/h).
2) Avoid hard acceleration or decelera- tion.
3) Avoid steep uphill grades.
4) If possible, reduce the amount of cargo being hauled or towed.
The malfunction indicator light may stop
blinking and remain on.
Have the vehicle inspected. It is recom-
mended you visit an INFINITI retailer for
this service. You do not need to have
your vehicle towed to the retailer.
CAUTION
Continued vehicle operation without
having the emission control system
checked and repaired as necessary could
lead to poor driveability, reduced fuel
economy, and possible damage to the
emission control system.
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).
Vehicle Dynamic Control
(VDC) off indicator light
When the ignition switch is in the ON
position, the Vehicle Dynamic Control
(VDC) off indicator light illuminates and then
turns off.
The light comes on when the vehicle dynamic
control off switch is pushed to OFF. This
indicates that the vehicle dynamic control
system is not operating.
When the 4L position is selected with the Four-Wheel Drive (4WD) shift switch, the
VDC system is disabled and the VDC off
indicator light illuminates. (4WD models)
For additional information, see “Vehicle
Dynamic Control (VDC) system” (P.5-135).
Vehicle Dynamic Control
(VDC) warning light
The light will blink when the VDC system or
the traction control system is operating, thus
alerting the driver that the vehicle is nearing
its traction limits. The road surface may be
slippery.
When the VDC warning light illuminates
when the VDC system is turned on, this light
alerts the driver to the fact that the VDC
system’s fail-safe mode is operating, for
example the VDC or hill start assist system
may not be functioning properly. Have the
system checked. It is recommended you visit
an INFINITI retailer for this service. If a
malfunction occurs in the system, the VDC
system function will be canceled but the
vehicle is still driveable. For additional
information, see “Vehicle Dynamic Control
(VDC) system” (P.5-135).

WARNING/INDICATOR LIGHTS
(other)
See “Vehicle information display” (P.2-20).
Exterior light indicator
This indicator illuminates when the headlight
switch is turned to the AUTO,orposition and the front parking lights, instru-
ment panel lights, rear combination lights,
license plate lights or headlights are on. The
indicator turns off when these lights are
turned off.
Front fog light indicator light
The front fog light indicator light illuminates
when the front fog lights are on. (See “Fog
light switch” (P.2-52).)
High beam assist indicator
light
The high beam assist indicator light illumi-
nates when the high beam assist system is
turned on and it is operational. (See “High
beam assist” (P.2-47).)
High beam indicator light
This light comes on when the headlight high
beam is on and goes out when the low beam is selected.
TOW mode indicator light
This light will illuminate when the TOW
mode is selected while the engine is running.
(See “TOW mode” (P.5-125).)
Turn signal/hazard indicator
lights
The light flashes when the turn signal switch
lever or hazard switch is turned on.
AUDIBLE REMINDERS
Key reminder chime
A chime will sound if the driver side door is
opened while the ignition switch is pushed to
the ACC position. Make sure the ignition
switch is pushed to the OFF position, and
take the Intelligent Key with you when
leaving the vehicle.
Light reminder chime
A chime will sound when the driver side door
is opened with the headlight switch in the
orposition and the ignition switch in
the ACC, OFF or LOCK position.
Turn the headlight switch to the OFF (if so
equipped) or the AUTO position when you
leave the vehicle.
Parking brake reminder chime
The chime will sound if the vehicle is driven
at more than 4 MPH (7 km/h) with the
parking brake applied. Stop the vehicle and
release the parking brake.
Brake pad wear warning
The disc brake pads have audible wear
warnings. When a brake pad requires repla-
cement, it will make a high pitched scraping
sound when the vehicle is in motion. This
scraping sound will first occur only when the
brake pedal is depressed. After more wear of
the brake pad, the sound will always be
heard even if the brake pedal is not
depressed. Have the brakes checked as soon
as possible if the warning sound is heard.
Instruments and controls2-19

2-24Instruments and controls
doors can be unlocked if the door handle
request switch is pushed again within 1
minute. When this item is turned to off,
all the doors will be unlocked when the
door handle request switch is pushed
once. Use the OK
button to activate or
deactivate this function.
Driving Position:
. Exit Seat Slide
This allows user to turn the entry/exit
function ON or OFF. Use the OK
button to turn this function ON or OFF.
(See “Memory seat” (P.3-39).)
. Exit Steering Up
This allows user to turn the entry/exit
function ON or OFF. Use the OK
button to turn this function ON or OFF.
(See “Memory seat” (P.3-39).)
Rear Door Alert:
The “Rear Door Alert” feature allows user to
customize the Rear Door Alert options. Use
the OK
button to change the mode.
. Horn & Alert
When selected, the alert is displayed and
the horn sounds.
. Alert Only
When selected, only the alert is dis-
played.
. OFF When selected, no alert or horn will be
active.
(See “Rear door alert” (P.2-59).)
Maintenance
The maintenance mode allows user to set
alerts for the reminding of maintenance
intervals. To change an item:
Select “Maintenance” using the
buttonsand press the OKbutton.
. Oil and Filter
. Tire
. Other
Oil and Filter:
This indicator appears when user set dis-
tance comes for changing the engine oil and
filter. You can set or reset the distance for
checking or replacing these items. For
scheduled maintenance items and intervals,
refer to the “9. Maintenance and schedules”
section.
Tire:
This indicator appears when the user set
distance comes for replacing tires. You can
set or reset the distance for replacing tires.
WARNING
The tire replacement indicator is not a
substitute for regular tire checks, includ-
ing tire pressure checks. (See “Changing
wheels and tires” (P.8-35).) Many fac-
tors including tire inflation, alignment,
driving habits and road conditions affect
tire wear and when tires should be
replaced. Setting the tire replacement
indicator for a certain driving distance
does not mean your tires will last that
long. Use the tire replacement indicator
as a guide only and always perform
regular tire checks. Failure to perform
regular tire checks, including tire pres-
sure checks could result in tire failure.
Serious vehicle damage could occur and
may lead to a collision, which could result
in serious personal injury or death.
Other:
This indicator appears when the user set
distance comes for checking or replacing
maintenance items other than the engine oil,
oil filter and tires. Other maintenance items
can include such things as air filter or tire
rotation. You can set or reset the distance
for checking or replacing the items.

2-28Instruments and controls
OPERATIONAL INDICATORS
1. No Key Detected
This warning appears when the Intelligent
Key is left outside the vehicle with the
ignition switch in the ON position. Make
sure the Intelligent Key is inside the vehicle.
See “Intelligent Key system” (P.3-7) for more
details.
2. Key ID Incorrect
This warning appears when the ignition
switch is pushed from the OFF position
and the Intelligent Key is not recognized by
the system. You cannot start the engine with
an unregistered key.
See “Intelligent Key system” (P.3-7).
3. Key Battery Low
This indicator appears when the Intelligent
Key battery is running out of power.
If this indicator appears, replace the battery
with a new one. (See “Intelligent Key battery
replacement” (P.8-21).)
4. Key System Error: See Owner’s
Manual
This warning appears if there is a malfunc-
tion in the Intelligent Key system. If this
warning appears while the engine isstopped, it may be impossible to start the
engine.
If this warning appears while the engine is
running, you can drive the vehicle. However
in these cases, have the system checked. It is
recommended you visit an INFINITI retailer
for this service.
5. Key Registration Complete
This indicator appears when a new Intelli-
gent Key is registered to the vehicle.
6. Push brake and start switch to
drive
This indicator appears when the shift lever is
in the P (Park) position.
This indicator also appears when the vehicle
has been started using the Remote Engine
Start function (if so equipped).
This indicator means that the engine will
start by pushing the ignition switch with the
brake pedal depressed. You can start the
engine from any position of the ignition
switch.
7. Push Ignition to OFF
After the Shift to Park warning illuminates,
the warning will illuminate if the ignition
switch is placed in the ACC position when
the shift lever moves into the P (Park)
position.To turn off the warning, place the ignition
switch in the ON position and then in the
LOCK position.
8. Shift to Park
This warning appears when the ignition
switch is pushed to stop the engine with
the shift lever in any position except the P
(Park) position.
If this warning appears, move the shift lever
to the P (Park) position or push the ignition
switch to the ON position.
An inside warning chime will also sound. (See
“Intelligent Key system” (P.3-7).)
9. Engine start operation for Intel-
ligent Key system indicator (if I-Key
battery level is low)
This indicator appears when the Intelligent
Key battery is running out of power and
when the Intelligent Key system and vehicle
are not communicating normally.
If this indicator appears, touch the ignition
switch with the Intelligent Key while depres-
sing the brake pedal. (See “Intelligent Key
battery discharge” (P.5-14).)
10. Release Parking Brake
This warning appears when the vehicle
speed is above 4 MPH (7 km/h) and the

The alarm is activated by:
.Unlocking the door or opening the lift-
gate without using the button on the
Intelligent Key, the door handle request
switch or the mechanical key. (Even if the
door is opened by releasing the door
inside lock knob, the alarm will activate.)
. Opening the hood.
How to stop an activated alarm
The alarm will stop when a door is unlocked
by pushing the unlock button on the Intelli-
gent Key, the door handle request switch or
using the mechanical key, or when the
ignition switch is pushed to the ACC or ON
position.
If the system does not operate as described
above, it is recommended you have it
checked by an INFINITI retailer.
INFINITI VEHICLE IMMOBILIZER
SYSTEM
The INFINITI Vehicle Immobilizer System
will not allow the engine to start without
the use of the registered Intelligent Key.
Never leave these keys in the vehicle.
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
received, including interference that may
cause undesired operation.
NOTE:
Changes or modifications not expressly
approved by the party responsible for
compliance could void the user’s authority
to operate the equipment.
For Canada:
This device contains licence-exempt trans-
mitter(s)/receiver(s) that comply with In-
novation, Science and Economic
Development Canada’s licence-exempt
RSS(s). Operation is subject to the follow-
ing two conditions: (1) This device may not
cause interference. (2) This device must
accept any interference, including interfer-
ence that may cause undesired operation of
the device.
SIC2045
Security indicator light
The security indicator light is located on the
meter panel. It indicates the status of the
INFINITI Vehicle Immobilizer System.
The light blinks after the ignition switch was
in the ACC, OFF and LOCK position. This
function indicates the security systems
equipped on the vehicle are operational.
If the INFINITI Vehicle Immobilizer System is
malfunctioning, this light will remain on
while the ignition switch is in the ON
position.
If the light still remains on and/or the
engine will not start, seek service for the
INFINITI Vehicle Immobilizer System as
Instruments and controls2-39

2-50Instruments and controls
Daytime Running Light (DRL) sys-
tem
The LED Daytime Running Lights (DRL)
automatically illuminate when the engine is
started and the parking brake is released.
The LED DRL operate with the headlight
switch in the OFF (if so equipped),
,or
AUTO (when the headlights are off) posi-
tion. When you turn the headlight switch to
the
position for full illumination, the LED
lights switch from LED DRL to the park
function.
Type A (if so equipped): If the parking brake
is applied before the engine is started, the
LED DRL do not illuminate. The LED DRL
illuminate when the parking brake is re-
leased. This feature will work in the
,
AUTO or OFF position. The LED DRL will
remain on until the ignition switch is pushed
to the OFF position.
Type B (if so equipped): If the parking brake
is applied before the engine is started, the
LED DRL do not illuminate. The LED DRL
illuminate when the parking brake is re-
leased. This feature will work in the AUTO or
position. The LED DRL will remain on
until the ignition switch is pushed to the OFF
position.
WARNING
When the LED DRL system is active with
the headlight switch in the OFF position
(if so equipped), tail lights on your
vehicle are not on. It is necessary at dusk
to turn on your headlights. Failure to do
so could cause an accident injuring
yourself and others.
Adaptive Front lighting System
(AFS) (if so equipped)
The Adaptive Front lighting System (AFS)
will automatically adjust the headlights (low
beam) toward the turning direction to
improve the driver’s view. When the head-
light switch is ON and the driver operates
the steering wheel in a turn, the AFS system
will be activated.
The AFS will operate:
. when the headlight switch is ON.
. when the shift lever is in any position
other than P (Park) or R (Reverse).
. when the vehicle is driven at above 3
MPH (5 km/h) for the left-side head-
light. Note that the right-side low beam
headlight will swivel but the left-side
headlight will not swivel when the vehicle
is below 3 MPH (5 km/h) and the steering wheel is turned.
AFS will also adjust the headlight to a proper
axis automatically, depending on the number
of occupants in the vehicle, the load the
vehicle is carrying and the road conditions.
If the AFS OFF indicator light blinks after
the ignition switch has been pushed to the
ON position, this may indicate that the AFS
is not functioning properly. Have the system
checked. It is recommended you visit an
INFINITI retailer for this service. When the
engine is started, the headlights will vibrate
to check the system condition. This is not a
malfunction.HEADLIGHT WASHER (if so
equipped)
The headlight washer operates when the
headlight is on and the ignition switch is in
the ON position.
Pull the windshield washer switch toward
you. The headlight washer operates with the
windshield washer operation. This operation
activates once each time either the ignition
switch or the headlight is turned off and on.
After the first operation, the headlight
washer operates once at every fifth opera-
tion of the windshield washer.