2021 INFINITI QX50 SYSTEM FAULT

VARIABLE COMPRESSION
TURBO
Your engine is equipped with a variable com-
pression ratio system called “Variable Com-
pression Turbo”. This system can vary the
engine compression ratio continuously.
According to driving conditions, the system
applies optimum compression ratio auto-
matically to achieve both high output and
high fuel economy efficiency.This is not a physical gauge. It is a display
option in the vehicle information display that
can be selected. For additional information,
see “Vehicle information display” (P. 2-19).
1Compression ratio status display
Displays the status of compression ratio
controlled by Variable Compression
Turbo. The lowest compression ratio
(8:1) and the highest (14:1) are displayed
as “Power” and ”Eco” respectively.
2Turbo charger boost pressure gauge
Displays the turbo charger boost
pressure.
NOTE:
Under some conditions, the compression ra-
tio may not change. This is not a malfunction
of the system.
CAUTION
If the Variable Compression Turbo be-
comes faulty, the Malfunction Indicator
Light (MIL) may come on. For additional
information, see “Malfunction Indicator
Light (MIL)” (P. 2-15).
LIC3924
2-8Instruments and controls

Speed Limit Sign indicator
This message may appear when the Traffic
Sign Recognition system is engaged.
For additional information, see “Traffic Sign
Recognition (TSR)” (P. 5-32).
Steering Assist Alert
This message may appear when the Steering
Assist system is engaged.
It will be displayed under the following
condition:
• When not holding the steering wheel orwhen there is no steering wheel operation
Please hold on the steering wheel immedi-
ately. When the steering operation is de-
tected, the warning turns off and the steering
assist function is automatically restored.
Steering Assist Not Available:
Cannot Detect Lane
This message may appear when the Steering
Assist system is engaged.
Under the following conditions, the Steering
Assist system is automatically canceled: • When lane markers in the traveling lane
cannot be correctly detected for a period of
time due to such items as a snow rut, re-
flection of light on a rainy day or several
unclear lane markers are present
If you want to use the Steering Assist system
again, cancel the ProPILOT Assist system
and set it again when lane markers are clearly
visible.
Steering Assist status
This indicator appears when the Steering As-
sist system is engaged.
For additional information, see “ProPILOT
Assist” (P. 5-77).
System fault See Owner’s Manual
This warning appears if there is a malfunction
in the Rear Automatic Braking (RAB) system.
For additional information, see “Rear Auto-
matic Braking (RAB)” (P. 5-119).
Unavailable: Front Radar Blocked
This message appears when the Distance
Control Assist (DCA), Forward Emergency
Braking (FEB) with Pedestrian Detection, or
Predictive Forward Collision Warning
(PFCW) systems become unavailable be-
cause the front radar is obstructed. For addi-
tional information, see “Distance Control As-
sist (DCA)” (P. 5-106), “Forward Emergency
Braking (FEB) with Pedestrian Detection”
(P. 5-123), or “Predictive Forward Collision
Warning (PFCW)” (P. 5-133).
Unavailable: Side Radar Obstruction
This message appears when one of the fol-
lowing systems (if so equipped) becomes un-
available because a radar blockage is de-
tected.
• Blind Spot Intervention® (BSI)
• Blind Spot Warning (BSW)
• Rear Cross Traffic Alert (RCTA)
For additional information, see “Starting and
driving” (P. 5-4).
2-28Instruments and controls

LOG-IN FUNCTION
After setting up the user information, the
system will automatically recognize the user
upon turning on the vehicle.
There will be a personalized welcome greet-
ing and screen prompt to log in.
This feature allows four drivers to use their
own registration, drive mode, driving posi-
tion, air conditioner, and auto settings and
memorizes these custom settings.
The log-in user can be changed on the wel-
come greeting screen or the User List screen.
For additional information, refer to the sepa-
rate INFINITI InTouch™ Owner’s Manual.
The log-in function is linked to the following
features:
• Meter
• Audio
• Navigation system display
• Navigation settings
• Air conditioner
• Memory seat (if so equipped)
• Engine/transmission
• Steering
• Suspension (if so equipped)
• Active trace control system• Driver assistance except for the Forward
Emergency Braking (FEB) with Pedestrian
Detection system (if so equipped)
• Body Control Module (BCM)
The
button will be on the INFINITI
Intelligent Key if the vehicle has Remote En-
gine Start. This feature allows the engine to
start from outside the vehicle.
Vehicles with an automatic climate control
system will default to either a heating or
cooling mode depending on outside and
cabin temperatures. For additional informa-
tion, see. “Remote Engine Start with Intelli-
gent Climate Control” (P. 4-35).
Laws in some local communities may restrict
the use of remote starters. For example,
some laws require a person using Remote
Engine Start to have the vehicle in view.
Check local regulations for any requirements.
LPD2995
REMOTE ENGINE START (if so
equipped)
3-18Pre-driving checks and adjustments

Voice Recognition logic (if so
equipped)
When the climate control system is on, the
fan speed may be automatically lowered so
that commands are more easily recognized.
Fan speed can be adjusted using the
fan
speed decrease andincrease buttons, if
desired.
MANUAL OPERATION
Fan speed control
Press thefan speed increase andfan speed decrease buttons to manually con-
trol the fan speed. Fan speed can also be
controlled by touching the “
”or“”
keys on the lower display.
Press the AUTO button to return to auto-
matic control of the fan speed.
Temperature control
Press thetemperature control
buttons up or down to set the desired
temperature.
The temperature can be set within the fol-
lowing range:
• For U.S.: 60 to 90ºF (16 to 32ºC)
• For Canada: 64 to 90ºF (18 to 32ºC)
Air recirculation
Press theair recirculation button to
recirculate interior air inside the vehicle. The
indicator light on the button will come
on.
The air recirculation cannot be activated
when the air conditioner is in the
front
defrosting mode.
When the outside temperature exceeds 70°F
(21°C), the air conditioning system may de-
fault to air recirculation mode automatically
to reduce overall power consumption. To exit
air recirculation mode, deselect the
air
recirculation button (indicator will turn off) to
enter fresh air mode.
Automatic intake air control
In the AUTO mode, the intake air will be
controlled automatically. To manually control
the intake air, press the
air recirculation
button. To return to the automatic control
mode, press and hold the
air recircula-
tion button for about 2 seconds. The indica-
tor light will flash twice, and then the intake
air will be controlled automatically.
Air flow control
Press thebutton to manually control
air flow. Pressing the button repeatedly will
cycle through the available modes and dis-
play the corresponding icon on the lower dis-
play. Air flow can also be controlled by touch-
ing the “
” key on the lower display:
— Air flows from center and side
vents.
— Air flows from center and sidevents and foot outlets.
— Air flows mainly from foot out-lets.
— Air flows from defroster and footoutlets.
To turn system off
Press the ON-OFF button.
CLIMATE button
Press theCLIMATE button to show the
CLIMATE screen on the lower display.
Rear window and outside mirror
(if so equipped) defroster switch
For additional information, see “Rear window
defroster, outside mirror defroster, and wiper
deicer (if so equipped) switch” (P. 2-35).
4-36Monitor, climate, audio, phone and voice recognition systems

•When the automatic brake hold function
is activated but fails to maintain the ve-
hicle at a standstill, depress the brake
pedal to stop the vehicle. If the vehicle
unexpectedly moves due to outside con-
ditions, the chime may sound and auto-
matic brake hold warning may illuminate
in the vehicle information display.
• Be sure to deactivate the automatic
brake hold function when using a car
wash or towing your vehicle.
• Make sure to place the shift lever in the P
(Park) position and apply the parking
brake when parking your vehicle, riding
on or off the vehicle, or loading luggage.
Failure to do so could cause the vehicle to
move or roll away unexpectedly and re-
sult in serious personal injury or property
damage.WARNING
• If any of the following conditions occur,
the automatic brake hold function may
not function. Have the system checked
promptly. It is recommended that you
visit an INFINITI retailer for this service.
Failure to operate the vehicle in accor-
dance with these conditions could cause
the vehicle to move or roll away unex-
pectedly and result in serious personal
injury or property damage.
– A warning message appears in the ve-
hicle information display.
– The indicator light on the automatic
brake hold switch does not illuminate
when the switch is pushed.
• The automatic brake hold function will
not be activated if the Slip indicator
light, electronic parking brake warning
light or master warning light illuminate
and the chassis control system fault
message appears in the vehicle informa-
tion display.
• To maintain the braking force to keep
the vehicle to a standstill, a noise may be
heard. This is not a malfunction.
HOW TO ACTIVATE/
DEACTIVATE THE AUTOMATIC
BRAKE HOLD FUNCTION
For additional information on activating and
deactivating the automatic brake hold func-
tion, refer to the instructions outlined in this
section.
How to activate the automatic
brake hold function
1. With the ignition switch in the ON posi- tion, push the automatic brake hold switch
O1. The indicator light on the automatic
brake hold switch
O2illuminates.
LSD2916
5-26Starting and driving

Active Engine Brake:
“Active Engine Brake” can be set to ON (en-
abled) or OFF (disabled). For additional infor-
mation, see “Active Engine Brake” (P. 5-157 ).
Reset Drive Mode Settings to Default:
Select “Reset Drive Mode Settings to De-
fault” and select “OK” to restore all the PER-
SONAL mode settings to default.
ECO MODE
The ECO mode adjusts the engine and trans-
mission to enhance fuel economy.
NOTE:
Selecting this drive mode will not necessarily
improve fuel economy as many driving fac-
tors influence its effectiveness.
Operation
Push the Drive Mode Selector switch to the
ECO position. “ECO” appears in the vehicle
information display and the ECO drive indi-
cator light illuminates on the instrument
panel. ECO mode will also be displayed in the
upper display.When the accelerator pedal is depressed
within the range of economy drive, the ECO
drive indicator light illuminates in green.
When the accelerator pedal is depressed
above the range of economy drive, the ECO
drive indicator light turns off. For ECO pedal
system equipped models, see “ECO pedal
system” (P. 5-30).
The ECO drive indicator light will not illumi-
nate in the following cases:
• When the shift lever is in the R (Reverse)
position.
• When the vehicle speed is below 3 mph (4.8 km/h) or over 90 mph (144 km/h).
• When the Intelligent Cruise Control system (if so equipped) is operated.
ECO pedal system (if so equipped)
The ECO pedal system helps assist the driver
to improve fuel economy by increasing the
reaction force of the accelerator pedal. When
the ECO drive indicator light is blinking or
turns off, the ECO pedal system increases
the reaction force of the accelerator pedal.
ECO drive indicator
light Illuminates or
blinks
Illuminates(green) When the pedal is
depressed within
range of economy drive
Blinks (green) When the pedal is
depressed almostover the range of economy drive
Not illumi- nated When the pedal is
depressed over the range of
economy drive
When the ECO drive indicator light illumi-
nates in green, the accelerator reaction force
is normal. When the ECO drive indicator light
is blinking or turns off, the ECO pedal system
increases the reaction force of the accelera-
tor pedal.
The ECO pedal system may not vary accel-
erator reaction force under the following
conditions:
• When the shift lever is in the N (Neutral) or R (Reverse) position.
• When Intelligent Cruise Control (if so equipped) is being operated.
5-30Starting and driving

–Snow chains are used.
– Wheels or tires other than INFINITI
recommended are used.
– The brakes are cold at low ambient
temperatures or immediately after
driving has started.
– The braking force becomes poor due
to wet brakes after driving through a
puddle or washing the vehicle.
• Turn the RAB system off in the following
conditions to prevent the occurrence of
an unexpected accident resulting from
sudden system operation:
– The vehicle is towed.
– The vehicle is carried on a flatbed
truck.
– The vehicle is on the chassis
dynamometer.
– The vehicle drives on an uneven road
surface.
– Suspension parts other than those
designated as Genuine INFINITI
parts are used. (If the vehicle height
or the vehicle body inclination is
changed, the system may not detect
an obstacle correctly.)
– The vehicle is towing an object (if so
equipped). •
Excessive noise (e.g., audio system vol-
ume, an open vehicle window) will inter-
fere with the chime sound, and it may not
be heard.
SYSTEM MALFUNCTION
If the RAB system malfunctions, it will be
turned off automatically, the RAB system
warning light will illuminate, and the “System
fault” warning message will appear in the
vehicle information display.
Action to take
If the warning light illuminates, park the ve-
hicle in a safe location, turn the engine off,
and restart the engine. If the warning light
continues to illuminate, have the RAB system
checked. It is recommended that you visit an
INFINITI retailer for this service.
NOTE:
If the RAB system cannot be operated tem-
porarily, the RAB system warning light
blinks.
SYSTEM MAINTENANCE
Observe the following items to ensure proper
operation of the system:
• Always keep the parking sensors
O1clean.
• If the parking sensors are dirty, wipe them off with a soft cloth while being careful to
not damage them.
• Do not subject the area around the parking sensors
O1to strong impact. Also, do not
remove or disassemble the parking sensors.
If the parking sensors and peripheral areas
are deformed in an accident, etc., have the
sensors checked. It is recommended that
you visit an INFINITI retailer for this service.
LSD3559
5-122Starting and driving

SPECIAL WINTER EQUIPMENT
It is recommended that the following items
be carried in the vehicle during winter:
• A scraper and stiff-bristled brush to re-move ice and snow from the windows and
wiper blades.
• A sturdy, flat board to be placed under the jack to give it firm support.
• A shovel to dig the vehicle out of snowdrifts.
• Extra washer fluid to refill the windshield- washer fluid reservoir.
DRIVING ON SNOW OR ICE
WARNING
• Wet ice (32°F, 0°C and freezing rain),
very cold snow or ice can be slick and very
hard to drive on. The vehicle will have
much less traction or “grip” under these
conditions. Try to avoid driving on wet
ice until the road is salted or sanded.
• Whatever the condition, drive with cau-
tion. Accelerate and slow down with
care. If accelerating or downshifting too
fast, the drive wheels will lose even more
traction. •
Allow more stopping distance under
these conditions. Braking should be
started sooner than on dry pavement.
• Allow greater following distances on
slippery roads.
• Watch for slippery spots (glare ice).
These may appear on an otherwise clear
road in shaded areas. If a patch of ice is
seen ahead, brake before reaching it. Try
not to brake while on the ice, and avoid
any sudden steering maneuvers.
• Do not use the cruise control on slippery
roads.
• Snow can trap dangerous exhaust gases
under your vehicle. Keep snow clear of
the exhaust pipe and from around your
vehicle.
ENGINE BLOCK HEATER (if so
equipped)
Engine block heaters are used to assist with
cold temperature starting.
The engine block heater should be used when
the outside temperature is 20°F (-7°C) or
lower.
WARNING
• Do not use your engine block heater with
an ungrounded electrical system or a
2-pronged adapter. You can be seriously
injured by an electrical shock if you use
an ungrounded connection.
• Disconnect and properly store the engine
block heater cord before starting the en-
gine. Damage to the cord could result in
an electrical shock and can cause serious
injury.
• Use a heavy-duty 3-wire, 3-pronged ex-
tension cord rated for at least 10 A. Plug
the extension cord into a Ground Fault
Interrupt (GFI) protected, grounded
110-VAC outlet. Failure to use the
proper extension cord or a grounded
outlet can result in a fire or electrical
shock and cause serious personal injury.
To use the engine block heater:
1. Turn the engine off.
2. Open the hood and unwrap the engine block heater cord.
3. Plug the engine block heater cord into a grounded 3-wire, 3-pronged extension
cord.
5-166Starting and driving