2019 INFINITI QX50 change key battery

interfere with the operation of the Intelligent
Key system under the following operating
conditions:∙ When operating near a location where strong radio waves are transmitted, such
as a TV tower, power station and broad-
casting station.
∙ When in possession of wireless equip- ment, such as a cellular telephone, trans-
ceiver or a CB radio.
∙ When the Intelligent Key is in contact with or covered by metallic materials.
∙ When any type of radio wave remote control is used nearby.
∙ When the Intelligent Key is placed near an electric appliance such as a personal
computer.
∙ When the vehicle is parked near a parking meter.
In such cases, correct the operating condi-
tions before using the Intelligent Key function
or use the mechanical key.
Although the life of the battery varies de-
pending on the operating conditions, the bat-
tery’s life is approximately two years. If the
battery is discharged, replace it with a new
one. When the Intelligent Key battery is low, a
“Key Battery Low” indicator illuminates in the
vehicle information display. For additional in-
formation, refer to “Vehicle information dis-
play warnings and indicators” in the “Instru-
ments and controls” section of this manual.
Since the Intelligent Key is continuously re-
ceiving radio waves, if the key is left near
equipment which transmits strong radio
waves, such as signals from a TV and per-
sonal computer, the battery life may become
shorter.
For additional information, refer to “Battery
replacement” in the “Do-it-yourself” section
of this manual.
CAUTION
Listed below are conditions or occurrences
which will damage the Intelligent Key:
∙ Do not allow the Intelligent Key, which
contains electrical components, to come
into contact with water or salt water.
This could affect the system function.
∙ Do not drop the Intelligent Key.
∙ Do not strike the Intelligent Key sharply against another object. ∙ Do not change or modify the Intelligent
Key.
∙ Wetting may damage the Intelligent Key. If the Intelligent Key gets wet, immedi-
ately wipe until it is completely dry.
∙ Do not place the Intelligent Key for an extended period in an area where tem-
peratures exceed 140°F (60°C).
∙ Do not attach the Intelligent Key with a key holder that contains a magnet.
∙ Do not place the Intelligent Key near equipment that produces a magnetic
field, such as a TV, audio equipment and
personal computers.
If an Intelligent Key is lost or stolen, INFINITI
recommends erasing the ID code of that In-
telligent Key from the vehicle. This may pre-
vent the unauthorized use of the Intelligent
Key to operate the vehicle. For information
regarding the erasing procedure, it is recom-
mended that you visit an INFINITI retailer.
3-8Pre-driving checks and adjustments

SymptomPossible CauseRemedy
When pushing the ignition switch to
start the engine The Key Battery Low warning appears
on the display.
The battery charge may be getting low.Replace the battery with a new one. For
additional information, refer to “Battery
replacement” in the “Do-it-yourself” sec-
tion of this manual.
The No Key Detected warning appears
on the display, the outside chime sounds
three times and the inside warning
chime sounds for approximately 3 sec-
onds. The battery charge may be getting low.
Replace the battery with a new one. For
additional information, refer to “Battery
replacement” in the “Do-it-yourself” sec-
tion of this manual.
When pushing the ignition switch The I-Key System Error: See Owner’s
Manual warning appears on the display. It warns of a malfunction with the Intel-
ligent Key system.It is recommended that you visit an
INFINITI retailer.
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 (if so equipped)
∙ Navigation settings (if so equipped)
∙ Air conditioner
∙ Automatic drive positioner (if so equipped)
∙ Engine/transmission ∙ Steering
∙ Suspension (if so equipped)
∙ Active trace control system
∙ Driver assistance except for the Forward
Emergency Braking (FEB) with Pedes-
trian Detection system (if so equipped)
∙ Body Control Module (BCM)
3-20Pre-driving checks and adjustments

When the ignition switch is pushed without
depressing the brake pedal, the ignition
switch will change as follows:
Push the ignition switch center:∙ Once to change to ON.
∙ Two times to change to OFF.
The ignition switch will automatically return
to the LOCK position when any door is either
opened or closed with the switch in the OFF
position. The ignition lock is designed so that the igni-
tion switch cannot be placed in the OFF po-
sition until the shift lever is in the P (Park)
position.
When the ignition switch cannot be placed in
the OFF position, proceed as follows:
1. Press the Park button to place the ve- hicle in the P (Park) position.
2. Push the ignition switch. The ignition switch position will change to the ON
position.
3. Push the ignition switch again to the OFF position.
The shift lever can be moved from the P
(Park) position if the ignition switch is in the
ON position and the brake pedal is de-
pressed.
If the battery of the vehicle is discharged, the
ignition switch cannot be moved from the
LOCK position.
Some indicators and warnings for operation
are displayed on the vehicle information dis-
play. For additional information, refer to “Ve-
hicle information display” in the “Instruments
and controls” section of this manual.OPERATING RANGE
The Intelligent Key functions can only be used
when the Intelligent Key is within the speci-
fied operating range.
When the Intelligent Key battery is almost
discharged or strong radio waves are present
near the operating location, the Intelligent
Key system’s operating range becomes nar-
rower and may not function properly.
If the Intelligent Key is within the operating
range, it is possible for anyone, even some-
one who does not carry the Intelligent Key, to
push the ignition switch to start the engine.
LSD2911LSD2020
5-14Starting and driving

The operating range of the engine start func-
tion is inside of the vehicle
1.
∙ The luggage area is not included in the operating range, but the Intelligent Key
may function.
∙ If the Intelligent Key is placed on the in- strument panel, inside the glove box,
storage bin or door pocket, the Intelligent
Key may not function.
∙ If the Intelligent Key is placed near the door or window outside the vehicle, the
Intelligent Key may function.
PUSH-BUTTON IGNITION
SWITCH POSITIONS
LOCK (Normal parking position)
The ignition switch can only be locked in this
position.
The ignition switch will be unlocked when it is
placed in the ON position while carrying the
Intelligent Key.
The ignition switch will lock when any door is
opened or closed with the ignition switched
off. ON (Normal operating position)
This position turns on the ignition system and
electrical accessories.
ON has a battery saver feature that will place
the ignition switch in the OFF position, if the
vehicle is not running, after some time under
the following conditions:
∙ All doors are closed.
∙ The shift lever is in P (Park).
The battery saver feature will be canceled if
any of the following occur: ∙ Any door is opened.
∙ The shift lever is moved out of the P (Park) position.
∙ The ignition switch changes position.
CAUTION
Do not leave the vehicle with the ignition
switch in the ON position when the engine
is not running for an extended period. This
can discharge the battery. OFF
The ignition switch is in the OFF position
when the engine is turned off using the igni-
tion switch. No lights will illuminate on the
ignition switch.
AUTO ACC
With the vehicle in the P (Park) position, the
Intelligent Key with you and the ignition
switch placed from the ON position to the
OFF position, the radio can still be used for a
period of time, or until the driver’s door is
opened.
After a period of time, functions such as ra-
dio, navigation, and Bluetooth® Hands-Free
Phone System may be restarted by pressing
the POWER button/VOLUME control knob
or the key fob unlock button. For additional
information, refer to “Monitor, climate, audio,
phone and voice recognition systems” section
of this manual.
Starting and driving5-15

EMERGENCY ENGINE SHUT OFF
To shut off the engine in an emergency situ-
ation while driving, perform the following
procedure:∙ Rapidly push the ignition switch three consecutive times in less than 1.5 sec-
onds, or
∙ Push and hold the ignition switch for more than 2 seconds.
INFINITI INTELLIGENT KEY
BATTERY DISCHARGE
If the battery of the Intelligent Key is dis-
charged or environmental conditions inter-
fere with the Intelligent Key operation, start
the engine according to the following proce-
dure:
1. Press the Park button to place the ve- hicle in the P (Park) position.
2. Firmly apply the foot brake.
3. Touch the ignition switch with the Intel- ligent Key as illustrated. (A chime will
sound.) 4. Push the ignition switch while depress-
ing the brake pedal within 10 seconds
after the chime sounds. The engine will
start.
After step 3 is performed, when the ignition
switch is pushed without depressing the
brake pedal, the ignition switch position will
change to ON.
NOTE: ∙ When the ignition switch is placed in the
ON position or the engine is started by
the above procedure, the Intelligent Key
battery discharge indicator may appear
in the vehicle information display even
when the Intelligent Key is inside the ve-
hicle. This is not a malfunction. To turn
off the Intelligent Key battery discharge
indicator, touch the ignition switch with
the Intelligent Key again.
∙ If the Intelligent Key battery discharge
indicator appears, replace the battery as
soon as possible. For additional informa-
tion, refer to “Battery replacement” in
the “Do-it-yourself” section of this
manual.
LSD2912
5-16Starting and driving

MAINTENANCE OPERATION
Perform at number of miles, kilometers or months, whichever comes first. Miles x 1,000
(km x 1,000) Months MAINTENANCE INTERVAL
48.75 (78)78 52.5
(84) 84 56.25
(90)90 60
(96) 96 63.75
(102) 102 67.5
(108) 108 71.25
(114) 114 75
(120) 120 78.75
(126) 126 82.5
(132) 132 86.25
(138) 138 90
(144) 144
Brake lines & cables IIIIII
Brake pads & rotors IIIIII
Brake fluid RRR
CVT fluid See NOTE (1)IIIIII
Transfer fluid & differential gear oil See NOTE (2)IIIIII
Steering gear & linkage, axle & suspension parts  III
Tire rotation See NOTE (3)
Propeller shaft & drive shaft boots (AWD models) IIIIII
Exhaust system III
In-cabin microfilter RRRR
Intelligent Key battery RRRR
NOTE:
Maintenance items with “” should be performed more frequently according to “Maintenance under severe driving conditions”.
(1) If using a car-top carrier or driving on rough or muddy roads, inspect CVT fluid deterioration every 60,000 miles (96,000 km), then change
CVT fluid if necessary. And if the inspection is not performed, change (not just inspect) CVT fluid every 60,000 miles (96,000 km). It is
recommended that you visit an INFINITI retailer for this service.
(2) If using a car-top carrier, or driving on rough or muddy roads, change (not just inspect) oil at every 20,000 miles (32,000 km) or 24 months.
(3) For additional information on tire rotation, refer to “General maintenance” in this section.
9-12Maintenance and schedules