ECU INFINITI QX50 2023 Service Manual

The HomeLink® Universal Transceiver pro-
vides a convenient way to consolidate the
functions of up to three individual hand-held
transmitters into one built-in device.
HomeLink® Universal Transceiver:
• Will operate most Radio Frequency (RF)devices such as garage doors, gates, home
and office lighting, entry door locks and
security systems.
• Is powered by your vehicle's battery. No separate batteries are required. If the
vehicle's battery is discharged or is dis-
connected, HomeLink® will retain all
programming.
When the HomeLink® Universal Transceiver is
programmed, retain the original transmitter
for future programming procedures (Example:
new vehicle purchases). Upon sale of the ve-
hicle, the programmed HomeLink® Universal
Transceiver buttons should be erased for se-
curity purposes. For additional information,
see “Programming HomeLink®” (P. 2-80).
WARNING
• Do not use the HomeLink® Universal
Transceiver with any garage door opener
that lacks safety stop and reverse fea-
tures as required by federal safety stan-
dards. (These standards became effec-
tive for opener models manufactured
after April 1, 1982.) A garage door
opener which cannot detect an object in
the path of a closing garage door and
then automatically stop and reverse
does not meet current federal safety
standards. Using a garage door opener
without these features increases the risk
of serious injury or death.
• During the programming procedure your
garage door or security gate will open
and close (if the transmitter is within
range). Make sure that people or objects
are clear of the garage door, gate, etc.,
that you are programming.
• Your vehicle's engine should be turned
off while programming the HomeLink®
Universal Transceiver. Do not breathe
exhaust gases; they contain colorless
and odorless carbon monoxide. Carbon
monoxide is dangerous. It can cause un-
consciousness or death.PROGRAMMING HOMELINK®
The following steps show generic instruc-
tions on how to program a Homelink®
button. If you have any questions or are
having difficulty programming your
HomeLink® buttons, refer to the HomeLink®
web site at: www.homelink.com/infiniti or
call 1-800-355-3515.
NOTE:
It is also recommended that a new battery be
placed in the hand-held transmitter of the
device being programmed to Homelink® for
quicker programming and accurate trans-
mission of the radio-frequency.
HOMELINK® UNIVERSAL
TRANSCEIVER (if so equipped)
2-80Instruments and controls

NOTE:
Some devices may require you to replace this
Programming Step 2 with procedures noted
in the “Programming HomeLink® for Cana-
dian customers and gate openers” (P. 2-82)
section. If the Homelink® indicator light
does not change to a rapidly blinking light
after performing these steps, contact
Homelink® at www.homelink.com.
4. At the garage door opener motor (securitygate motor, etc.), locate the “Learn” or
“Set” button. This can usually be found
where the hanging antenna wire is at-
tached to the motor-head unit (see the
device’s manual to identify this button.).
The name and color of the button may
vary by manufacturer.
NOTE:
A ladder and/or second person may simplify
the following steps. Do not stand on your
vehicle to perform the next steps. 5. Firmly press and release the “Learn” or
“Set” button until the indicator illuminates.
Once the button is pressed, you have ap-
proximately 30 seconds to initiate the
next step.
6. Return to the vehicle and firmly press, hold for two seconds and release the
HomeLink® button up to three times. Do
not press the HomeLink® button rapidly.
At this point programming is complete
and your device should operate when
the HomeLink® button is pressed and
released. 7. If you have any questions or are having
difficulty programming your HomeLink®
buttons, refer to the HomeLink® web
site at: www.homelink.com/infiniti or call
1-800-355-3515.
PROGRAMMING HOMELINK®
FOR CANADIAN CUSTOMERS
AND GATE OPENERS
Canadian radio-frequency laws require
transmitter signals to “time-out” (or quit) af-
ter several seconds of transmission – which
may not be long enough for HomeLink® to
pick up the signal during training. Similar to
this Canadian law, some U.S. gate operators
are designed to “time-out” in the same
manner.
If you live in Canada or you are having diffi-
culties training a gate operator orgarage
door opener by using the “Programming
HomeLink®” procedures, replace“Program-
ming HomeLink®” step 2with the following:
NOTE:
When programming a garage door opener,
etc., unplug the device during the “cycling”
process to prevent possible damage to the
device components.
LIC4798
Example
2-82Instruments and controls

DOOR LOCKS/UNLOCKS
PRECAUTION
• Do not push the door handle request switchwith the Intelligent Key held in your hand as
illustrated. The close distance to the door
handle will cause the Intelligent Key system
to have difficulty recognizing that the Intel-
ligent Key is outside the vehicle.
• Within 2 seconds after the doors are locked using the door handle request switch, make
sure that the doors have been securely
locked by operating the door handles. • To prevent the Intelligent Key from being
left inside the vehicle, make sure you carry
the key with you before locking the doors
and liftgate.
• The Intelligent Key system (opening/ closing doors with the door handle request
switch or the one touch unlock sensor) can
be set to remain inactive. For additional
information, refer to the separate INFINITI
InTouch® Owner’s Manual.
• The door cannot be unlocked using the one touch unlock operation after locking the
door within 2 seconds. To unlock the door,
release the one touch unlock sensor once
and touch it again.
• If a large amount of water runs down on the door handle (for example, when wash-
ing the vehicle or in heavy rain), the door
may unlock if the Intelligent Key is in range
of operation. To prevent the door from be-
ing unlocked, the Intelligent Key should be
more than 7 ft (2 m) away from the vehicle.
• Do not hold and pull the door handle quickly. The door will be unlocked but will
not open. Release the door handle once
and pull it again to open the door.
• If you pull the door handle with a gloved hand, the one touch unlock operation may
not function.
INFINITI INTELLIGENT KEY
OPERATION
You can lock or unlock the doors without
taking the Intelligent Key out of your pocket
or bag.
LPD2716LPD2717
Pre-driving checks and adjustments3-9

NOTE:
• The one touch sensors and requestswitches for all doors and liftgate can be
deactivated when the Lock/Unlock by
Door Handle setting is switched to OFF in
“Comfort & Convenience” options of the
“Settings” menu of the lower touch-
screen display. For additional information,
refer to the separate 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 by pushing the door
handle request switch with the Intelligent
Key inside the vehicle. However, when an
Intelligent Key is inside the vehicle, doors
can be locked with another registered In-
telligent Key.
WARNING
After locking the doors using the request
switch, make sure that the doors have been
securely locked by operating the door
handles within two seconds of locking.
Failure to follow these instructions may re-
sult in inadvertently unlocking the doors,
which may decrease the safety and secu-
rity of your vehicle.
CAUTION
• When locking the doors using the re-
quest switch, make sure to have the In-
telligent Key in your possession before
operating the request switch to prevent
the Intelligent 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.
When the driver’s side door is open, the doors
are locked, then the Intelligent Key is left
inside the vehicle and the door is closed, all
doors will unlock automatically.
NOTE:
The doors may not lock when the Intelligent
Key is in the same hand that is operating the
request switch to lock the door. Put the In-
telligent Key in a purse, pocket or your other
hand.
CAUTION
The lockout protection may not function
under the following conditions:
• When the Intelligent Key is placed on top
of the instrument panel.
• When the Intelligent Key is placed inside
the glove box or a storage bin.
• When the Intelligent Key is placed inside
the door pockets.
• When the Intelligent Key is placed inside
or near metallic materials.
LPD2734
Pre-driving checks and adjustments3-11

1.(remote engine start) button
2.
(lock) button
3.
(unlock) button
4.
(liftgate) button
5.
(panic) button
Locking doors and fuel-filler door
1. Place the ignition switch in the LOCK position.
2. Close all doors. 3. Press the
button on the Intelligent
Key.
4. The hazard indicator lights flash twice and the horn beeps once.
5. All doors, liftgate and fuel-filler door will be locked.
WARNING
After locking the doors using the Intelli-
gent Key, be sure that the doors have been
securely locked by operating the door
handles within two seconds of locking.
Failure to follow these instructions may re-
sult in inadvertently unlocking the doors,
which may decrease the safety and secu-
rity of your vehicle.
Unlocking doors and fuel-filler door
1. Press thebutton on the Intelligent
Key.
2. The hazard indicator lights flash once and the driver’s and fuel-filler doors unlock.
3. Press the
button again within 1 min-
ute to unlock all doors and liftgate. All doors, liftgate and fuel-filler door will be
locked automatically unless one of the fol-
lowing operations is performed within 1 min-
ute after pressing the
button:
• Opening any doors.
• Pushing the ignition switch.
Using the interior lights
The interior lights illuminate for a period of
time when a door is unlocked.
The lights can be turned off without waiting by
performing one of the following operations:
• Placing the ignition switch in the ON position.
• Locking the doors with the Intelligent Key.
• Switching the interior light switch to the OFF position.
For additional information, see “Interior
lights” (P. 2-78).
Opening windows
The Intelligent Key allows you to simultane-
ously open windows equipped with auto-
matic operation.
To open the windows, press and hold the
button on the Intelligent Key for longer
than 3 seconds after all doors are unlocked.
LPD3702
3-14Pre-driving checks and adjustments

The door windows will open while pressing
thebutton on the Intelligent Key.
The door windows cannot be closed by using
the Intelligent Key.
Releasing the rear liftgate
The rear liftgate can be opened and closed by
performing the following:
• Press the
button for longer than 1
second to open the rear liftgate.
• Press the
button again for longer than
1 second to close the rear liftgate.
When the
button is pressed during the
open or close process, the liftgate motors will
stop. When the
button is pressed again
for longer than 1 second the liftgate will re-
verse direction.
Using the panic alarm
If you are near your vehicle and feel threat-
ened, you may activate the panic alarm to call
attention by pressing and holding the
button on the Intelligent Key for longer than
0.5 seconds.
The panic alarm and headlights will stay on
for a period of time. The panic alarm stops when:
• It has run for a period of time.
• Any button is pressed on the Intelligent Key.
• The request switch on the driver or passen-
ger door is pushed and the Intelligent Key is
in range of the door handle.
Answer back horn feature
If desired, the answer back horn feature can
be deactivated using the Intelligent Key.
When it is deactivated and the
button
is pressed, the hazard indicator lights flash
twice. When the
button is pressed, nei-
ther the hazard indicator lights nor the horn
operates.
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. The ”Comfort & Convenience” options
of the “Settings” menu 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, see “Trouble-
shooting guide” (P. 3-16) and the separate
INFINITI InTouch® Owner’s Manual.
Pre-driving checks and adjustments3-15

EXTENDING ENGINE RUN TIME
The Remote Engine Start feature can be ex-
tended one time by performing the steps listed
in “Remote starting the vehicle” (P. 3-19). Run
time will be calculated as follows:
• The first 10 minute run time will startwhen the Remote Engine Start function is
performed.
• The second 10 minutes will start immedi- ately when the Remote Engine Start func-
tion is performed again. For example, if the
engine has been running for 5 minutes, and
10 minutes are added, the engine will run
for a total of 15 minutes.
• Extending engine run time will bring you to the two Remote Engine Start limit.
A maximum of two Remote Engine Starts, or
a single start with an extension, are allowed
between ignition cycles.
The ignition switch must be cycled to the ON
position and then back to the OFF position
before the Remote Engine Start procedure
can be used again.
CANCELING A REMOTE ENGINE
START
To cancel a Remote Engine Start, perform
one of the following:
• Aim the Intelligent Key at the vehicle and press
until the parking lights turn off.
• Turn on the hazard warning flashers.
• Cycle the ignition switch on and then off.
• The extended engine run time has expired.
• The first 10 minute timer has expired.
• Opening the engine hood.
• Shifting the vehicle out of P (Park).
• The alarm sounds due to illegal entry into the vehicle.
• Pushing the ignition switch without the In- telligent Key in the vehicle.
• Not pressing the brake pedal while pressing the ignition switch with the Intelligent Key
in the vehicle.
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 ONposition.
• 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 sec-
onds if the engine goes from running to off.
This is not applicable when extending en-
gine 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
button.
• The brake is pressed.
• The doors are not closed and locked.
• The liftgate is open.
• The I–Key System Error warning message appears in the vehicle information display.
• The alarm sounds due to illegal entry into the vehicle.
3-20Pre-driving checks and adjustments

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, see “Exhaust gas (carbon
monoxide)” (P. 5-4).
• 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 chil-
dren, people who require the assistance
of others or pets unattended in your ve-
hicle. Additionally, the temperature in-
side a closed vehicle on a warm day can
quickly become high enough to cause a
significant 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.
OPERATING THE POWER
LIFTGATE
WARNING
• Make sure that all passengers have their
hands, etc., inside the vehicle before
closing the liftgate. •
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 chil-
dren, people who require the assistance
of others or pets unattended in your ve-
hicle. Additionally, the temperature in-
side a closed vehicle on a warm day can
quickly become high enough to cause a
significant risk of injury or death to
people or pets.
LPD3058
Instrument panel switch
LIFTGATE
3-22Pre-driving checks and adjustments

• If the liftgate opener switchOAis activated
while the cinching motor is engaged, the
cinching motor will disengage and release
the latch and the liftgate will open.
• The Intelligent Key button must be held for 1 second before the liftgate closes.
• The liftgate close switch
OCcan only be
used to close the liftgate if the power lift-
gate main switch is in the ON position.
• If the liftgate lock switch
ODis activated the
liftgate will begin to close and all doors will
lock.
Stop - Reverse:
During the open/close movement, the lift-
gate can be stopped if the Intelligent Key,
instrument panel or liftgate opener switch
OA, liftgate close switchOCor liftgate lock
switch
ODis pushed. The liftgate can be re-
versed if the Intelligent Key, instrument panel
or liftgate opener switch
OA, liftgate request
switch
OBor liftgate lock switchODis pushed
again.
Auto Reverse:
If an obstacle is detected during power open
or power close, a warning chime will sound
and the liftgate will reverse direction and re-
turn to the full open or full close position. If a second obstacle is detected, the liftgate
motion will stop and the liftgate will enter
manual mode.
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
OAis
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
OAand
lift the liftgate.
To close, lower and push the liftgate down
securely.
LPD2721
3-24Pre-driving checks and adjustments

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.
Proper operation technique
• While at the rear of the vehicle, begin mak-ing a quick forward kicking motion.
• Raise your foot straight under the center of the rear bumper then immediately return
your foot to the ground in a continuous
motion.
• The kicking motion should be straight, smooth and consistent.
• After your kick motion is complete, step back and allow the liftgate to open/close. • Three beeps will sound and the liftgate will
begin moving within two seconds after the
kick.
CAUTION
Before performing the kicking motion,
steady your stance to prevent any loss of
balance. Also, while making the kicking
motion, take caution around hot exhaust
system parts. Otherwise, there may be
danger of injury.
LPD2765
Activation zone
LPD3033
DO: Quick forward kick and return while the key fob is within range
Pre-driving checks and adjustments3-25