ECU INFINITI QX50 2019 Service Manual

Locking all doors and fuel-filler
door
1. Place the ignition switch in the OFF po-sition and make sure you carry the Intel-
ligent Key with you.
2. Close all doors.
3. Push the door handle request switch (driver’s or front passenger’s)
Awhile
carrying the Intelligent Key with you.
4. All the doors, liftgate and fuel-filler door will lock.
5. The hazard indicator flashes twice and the outside chime sounds twice. NOTE:
∙ Request switches for all doors and lift-
gate can be deactivated when the
Lock/Unlock by Door Handle setting is
switched to OFF in “Vehicle Settings” of
the lower touch-screen display. For ad-
ditional information, refer to the sepa-
rate INFINITI InTouch™ Owner’s
Manual.
∙ Doors will lock with the Intelligent Key
while the ignition switch is placed in the
ON position.
∙ Doors will not lock with the Intelligent
Key while the driver’s door is open. ∙
Doors will not lock by pushing the door
handle request switch with the Intelli-
gent Key inside the vehicle. However,
when an Intelligent Key is inside the ve-
hicle, doors can be locked with another
registered Intelligent Key.
CAUTION
∙ After locking the doors using the request
switch, make sure that the doors have
been securely locked by operating the
door handles or the rear liftgate opener
switch.
∙ When locking the doors using the request switch, make sure to have the Intelligent
Key in your possession before operating
the request switch to prevent the Intelli-
gent Key from being left in the vehicle.
∙ The request switch is operational only when the Intelligent Key has been de-
tected by the Intelligent Key system.
Lockout protection
To prevent the Intelligent Key from being
accidentally locked in the vehicle, lockout
protection is equipped with the Intelligent
Key system.
LPD2718LPD2734
3-12Pre-driving checks and adjustments

NOTE:
The door handle welcome lights and one
touch unlock sensor can be deactivated in
“Vehicle Settings” in the lower touch-screen
display. For additional information, refer to
the separate INFINITI InTouch™ Owner’s
Manual.
HOW TO USE THE REMOTE
KEYLESS ENTRY FUNCTION
The remote keyless entry function can oper-
ate all door locks using the remote keyless
function of the Intelligent Key. The remote
keyless function can operate at a distance of
33 ft (10 m) away from the vehicle. The op-
erating distance depends upon the conditions
around the vehicle.
The remote keyless entry function will not
function under the following conditions:∙ When the Intelligent Key is not within the operational range.
∙ When the doors or the rear liftgate are open or not closed securely.
∙ When the Intelligent Key battery is dis- charged.
CAUTION
When locking the doors using the Intelli-
gent Key, be sure not to leave the key in the
vehicle.
Locking doors
1. Place the ignition switch in the LOCK position.
2. Close all doors.
3. Press the
button on the Intelli-
gent Key.
4. The hazard indicator lights flash twice and the horn beeps once.
5. All doors will be locked.
LPD2257
Pre-driving checks and adjustments3-15

Answer back horn feature
If desired, the answer back horn feature can
be deactivated using the Intelligent Key.
When it is deactivated and the
but-
ton is pressed, the hazard indicator lights
flash twice. When the
button is
pressed, neither the hazard indicator lights
nor the horn operates. However, the head-
lights will illuminate for 30 seconds. NOTE:
If you change the answer back horn and light
flash feature with the Intelligent Key, the
lower touch-screen display will show the
current mode after the ignition switch has
been cycled from the OFF to the ON posi-
tion. “Vehicle Settings” in the lower touch-
screen display can also be used to change the
answer back horn mode between “Conve-
nience” and “Security” settings.
To deactivate:
Press and hold the
andbuttonsfor at least 2 seconds.
The hazard indicator lights will flash three
times to confirm that the answer back horn
feature has been deactivated.
To activate: Press and hold the
andbuttonsfor at least 2 seconds once
more.
The hazard indicator lights will flash once and
the horn will sound once to confirm that the
horn beep feature has been reactivated.
Deactivating the horn beep feature does not
silence the horn if the alarm is triggered.
WARNING SIGNALS
To help prevent the vehicle from moving un-
expectedly by erroneous operation of the In-
telligent Key or to help prevent the vehicle
from being stolen, a chime or buzzer sounds
from inside and outside the vehicle and a
warning is displayed in the instrument panel.
When a chime or beep sounds or a warning is
displayed, be sure to check the vehicle and
the Intelligent Key.
For additional information, refer to the
“Troubleshooting guide” in this section and
the separate INFINITI InTouch™ Owner’s
Manual.
TROUBLESHOOTING GUIDE
Verify the location of all Intelligent Keys that
are programmed for the vehicle. If another
Intelligent Key is in range or inside the vehicle,
the vehicle system may respond differently
than expected.
LPD2259
3-18Pre-driving checks and adjustments

CONDITIONS THE REMOTE
ENGINE START WILL NOT WORK
The Remote Engine Start will not operate if
any of the following conditions are present:∙ The ignition switch is placed in the ON position.
∙ The hood is not securely closed.
∙ The hazard indicator lights are on.
∙ The engine is still running. The engine must be completely stopped. Wait at
least 6 seconds if the engine goes from
running to off. This is not applicable when
extending engine run time.
∙ The
button is not pressed and held
for at least 2 seconds.
∙ The
button is not pressed and held
within 5 seconds of pressing the lock but-
ton.
∙ The brake is pressed.
∙ The doors are not closed and locked.
∙ The liftgate is open.
∙ The I-Key Indicator Light remains solid in the vehicle information display. ∙ The alarm sounds due to illegal entry into
the vehicle.
∙ Two Remote Engine Starts, or a single Remote Engine Start with an extension,
have already been used.
∙ The vehicle is not in P (Park).
∙ There is a detected registered key already inside of the vehicle.
∙ The Remote Engine Start function has been switched to the OFF position in
“Vehicle Settings” of the lower touch-
screen display. For additional informa-
tion, refer to the separate INFINITI
InTouch™ Owner’s Manual.
The Remote Engine Start may display a
warning or indicator in the vehicle informa-
tion display. For additional information, refer
to the separate INFINITI InTouch™ Owner’s
Manual.
Pre-driving checks and adjustments3-23

1. Pull the hood lock release handle1lo-
cated below the driver side instrument
panel. The hood will spring up slightly.
2. Push the lever
2at the front of the
hood to the side with your fingertips and
raise the hood.
When closing the hood, lower it slowly and
make sure it locks into place.
WARNING
∙ Make sure the hood is completely closed and latched before driving. Failure to do
so could cause the hood to fly open and
result in an accident.
∙ If you see steam or smoke coming from the engine compartment, to avoid injury
do not open the hood.
WARNING
∙ Always be sure the liftgate has beenclosed securely to prevent it from open-
ing while driving.
∙ Do not drive with the liftgate open. This could allow dangerous exhaust gases to
be drawn into the vehicle. For additional
information, refer to “Exhaust gas (car-
bon monoxide)” in the “Starting and driv-
ing” section of this manual.
∙ To help avoid risk of injury or death through unintended operation of the ve-
hicle and/or its systems, including en-
trapment in windows or inadvertent door
lock activation, do not leave children,
people who require the assistance of oth-
ers or pets unattended in your vehicle.
Additionally, the temperature inside a
closed vehicle on a warm day can quickly
become high enough to cause a signifi-
cant risk of injury or death to people and
pets.
∙ Always be sure that hands and feet are clear of the door frame to avoid injury
while closing the liftgate.
LPD2754
HOOD LIFTGATE
3-24Pre-driving checks and adjustments

A pinch strip is mounted on each side of the
liftgate. If an obstacle is detected by a pinch
strip during power close, the liftgate will re-
verse direction and return to the full open
position.
NOTE:
If the pinch strip is damaged or removed, the
power close function will not operate.
WARNING
There are some small distances immedi-
ately before the closed position which can-
not be detected. Make sure that all passen-
gers have their hands, etc., inside the
vehicle before closing the liftgate.Manual Mode:
If power operation is not available, the lift-
gate may be operated manually. Power op-
eration may not be available if multiple ob-
stacles have been detected in a single power
cycle or if the battery voltage is low.
If the power liftgate opener switch
Ais
pushed during power open or close, the
power operation will be canceled and the
liftgate can be operated manually.
To open the liftgate manually, unlock the
doors, push the liftgate opener switch
Aand
lift the liftgate. To close, lower and push the liftgate down
securely.
MOTION-ACTIVATED LIFTGATE
(if so equipped)
The liftgate can be operated using a quick
kicking motion under the center of the rear
bumper.
To operate, the Intelligent Key must be within
31.5 in (80 cm) of the liftgate.
NOTE:
Tow hitches are available as an accessory for
this vehicle. If a tow hitch is installed, the
liftgate electronic control unit (ECU) needs
to be replaced with an ECU programmed
with towing logic for the Motion-Activated
Liftgate to function properly.
LPD2721
Pre-driving checks and adjustments3-27

CAUTION
∙ Interference or malfunction can becaused by parking in close proximity to
radio or satellite towers.
∙ Intelligent Key interference could be caused if you have your key fob stored
next to your cell phone or any RF-enabled
smart card. For additional information,
refer to “INFINITI Intelligent Key” in this
section.
POWER LIFTGATE MAIN
SWITCH
The power liftgate operation can be turned
ON
Aor OFFBby the power liftgate main
switch located in the glove box.
When the power liftgate main switch is
pushed to the OFF position, the power op-
eration is not available by the power liftgate
switch or liftgate request switch on the lift-
gate.
Power operation is only available when the
power liftgate main switch is in the OFF po-
sition by pushing the instrument panel switch
or pressing the liftgate button on the key fob. Motion-Activated Liftgate (if so equipped)
will not function when the power liftgate
main switch is in the OFF position.
LIFTGATE RELEASE
WARNING
∙ Always be sure the liftgate has been
closed securely to prevent it from open-
ing while driving.
∙ Do not drive with the liftgate open. This could allow dangerous exhaust gases to
be drawn into the vehicle. For additional
information, refer to “Exhaust gas (car-
bon monoxide)” in the “Starting and driv-
ing” section of this manual.
∙ To avoid personal injury, do not attempt to activate the power liftgate if one or
both of the liftgate struts are removed.
LPD2723
Pre-driving checks and adjustments3-29

3. Push and hold the power liftgate closeswitch
Blocated on the liftgate for
more than 3 seconds or until two beeps
are heard.
The liftgate will open to the selected position
setting. To change the position of the liftgate,
repeat steps 1-3.
OPENING THE FUEL-FILLER
DOOR
The fuel-filler door automatically unlocks
when the driver’s door is unlocked. 1. Unlock the fuel-filler door using one of the following operations:
∙ Unlock the driver’s door with the Intel- ligent Key.
∙ Push the power door lock switch to the unlock position. ∙ Touch the one touch unlock sensor
(driver’s or front passenger’s) while
carrying the Intelligent Key with you.
For additional information, refer to
“Locking all doors and fuel-filler door”
in this section.
2. To open the fuel-filler door, push the right side of the fuel-filler door to re-
lease.
To lock, close the fuel-filler door securely and
lock the doors.
FUEL-FILLER CAP
WARNING
∙ Gasoline is extremely flammable and highly explosive under certain conditions.
You could be burned or seriously injured if
it is misused or mishandled. Always stop
the engine and do not smoke or allow
open flames or sparks near the vehicle
when refueling.
∙ Do not attempt to top off the fuel tank after the fuel pump nozzle shuts off au-
tomatically. Continued refueling may
cause fuel overflow, resulting in fuel
spray and possibly a fire.
LPD2725
FUEL-FILLER DOOR
Pre-driving checks and adjustments3-31

∙Objects in the RearView Monitor will ap-
pear visually opposite compared to when
viewed in the rearview and outside mirrors.
∙ Use the displayed lines as a reference.The lines are highly affected by the num-
ber of occupants, fuel level, vehicle posi-
tion, road conditions and road grade.
∙ Make sure that the liftgate is securely closed when backing up.
∙ Do not put anything on the rearview camera. The rearview camera is installed
above the license plate.
∙ When washing the vehicle with high pressure water, be sure not to spray it
around the camera. Otherwise, water
may enter the camera unit causing water
condensation on the lens, a malfunction,
fire or an electric shock.
∙ Do not strike the camera. It is a precision instrument. Otherwise, it may malfunc-
tion or cause damage resulting in a fire or
an electric shock.
The following are operating limitations and
do not represent a system malfunction: ∙ When the temperature is extremely high or low, the screen may not clearly display
objects. ∙ When strong light directly shines on the
camera, objects may not be displayed
clearly.
∙ Vertical lines may be seen in objects on the screen. This is due to strong reflected
light from the bumper.
∙ The screen may flicker under fluorescent light.
∙ The colors of objects on the RearView Monitor may differ somewhat from the
actual color of objects.
∙ Objects on the monitor may not be clear in a dark environment.
∙ There may be a delay when switching between views.
∙ If dirt, rain or snow accumulate on the camera, the RearView Monitor may not
display objects clearly. Clean the camera.
∙ Do not use wax on the camera lens. Wipe off any wax with a clean cloth dampened
with a diluted mild cleaning agent, then
wipe with a dry cloth.
SYSTEM MAINTENANCE
CAUTION
∙ Do not use alcohol, benzine or thinner toclean the camera. This will cause
discoloration.
∙ Do not damage the camera as the moni- tor screen may be adversely affected.
If dirt, rain or snow accumulates on the cam-
era
1, the RearView Monitor may not dis-
play objects clearly. Clean the camera by wip-
ing it with a cloth dampened with a diluted
mild cleaning agent and then wiping it with a
dry cloth.
LHA4552
4-10Monitor, climate, audio, phone and voice recognition systems

Touch “Reset Settings” to return all settings
to default.
You can also press and hold
the
CAMERA button and either turn or
move the INFINITI controller to the left or the
right to adjust the day/night settings. Press-
ing and holding the
CAMERA button
again will switch the screen to AUTO mode.
While the adjustment screen is shown on the
upper display you can also touch either “+” or
“-” key.
NOTE:
Do not adjust the Brightness, Tint, Color,
Contrast and Black Level of the Around
View® Monitor while the vehicle is moving.
Make sure the parking brake is firmly ap-
plied.
AROUND VIEW® MONITOR
SYSTEM LIMITATIONS
WARNING
Listed below are the system limitations for
Around View® Monitor. Failure to operate
the vehicle in accordance with these system
limitations could result in serious injury or
death.
∙ Do not use the Around View® Monitor with the outside mirrors in the stored po-
sition, and make sure that the liftgate is
securely closed when operating the ve-
hicle using the Around View® Monitor.
∙ The apparent distance between objects viewed on the Around View® Monitor
differs from the actual distance.
∙ The cameras are installed on the front grille, the outside mirrors and above the
rear license plate. Do not put anything on
the vehicle that covers the cameras.
∙ When washing the vehicle with high pressure water, be sure not to spray it
around the cameras. Otherwise, water
may enter the camera unit causing water
condensation on the lens, a malfunction,
fire or an electric shock.
LHA4348
4-22Monitor, climate, audio, phone and voice recognition systems