2023 INFINITI QX50 change key battery

NOTE:
After the ignition switch is placed in the ON
position, it may take a period of time for
the tire pressure to be displayed while the
vehicle is driven. Depending on the radio
wave circumstance, tire pressure may not
correctly be displayed.
OIL CONTROL SYSTEM
Engine oil information informs the distance
to oil change. Never exceed one year or 7500
miles (12000 km) between oil change
intervals.
Display when
ignition is ONDisplay timing Action Required
Engine Oil
Service due in
xxx miles Remaining oil
life is less than
940 miles
(1500 km). Plan to have
your vehicle
serviced.
Engine Oil
Service due Remaining oil
life is 0 miles
(0 km). Have your
vehicle serviced
within two
weeks or less
than 500 miles
(800 km).
The oil change interval cannot be adjusted
manually. The distance to oil change interval is calcu-
lated depending on the driving conditions and
set automatically by the oil control system.
CAUTION
If the oil replacement indicator is displayed,
change the engine oil within two weeks or
less than 500 miles (800 km).
Operating the vehicle with deteriorated oil
can damage the engine.
To reset oil control system:
1. Place the ignition switch in the “ON” position.
2. Push the trip computer switches
andlocated on the right side of the steer-
ing wheel to change the display.
3. Select the Engine Oil Service due in xxx miles display.
4. Push and hold the
orswitch for
longer than 1 second. Hold until the re-
maining distance changes to – – – miles
(km).
VEHICLE INFORMATION
DISPLAY WARNINGS AND
INDICATORS
The following messages may appear in your
vehicle information display.
Engine start operation for
Intelligent Key system
(if I-Key battery level is low)
This indicator appears when the battery of
the Intelligent Key is low and when the Intel-
ligent Key system and the vehicle are not
communicating normally.
If this appears, touch the ignition switch
with the Intelligent Key while depressing the
brake pedal. For additional information, see
“INFINITI Intelligent Key battery discharge”
(P. 8-22).
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. For additional information,
see “Battery replacement” (P. 8-22).
2-24Instruments and controls

INFINITI INTELLIGENT KEY
Your vehicle can only be driven with the Intel-
ligent Keys which are registered to your
vehicle’s Intelligent Key System components
and INFINITI Vehicle Immobilizer System
components.
Never leave the keys in the vehicle.As many as four Intelligent Keys can be reg-
istered and used with one vehicle. The new
keys must be registered prior to use with the
Intelligent Key System and INFINITI Vehicle
Immobilizer System of your vehicle. It is rec-
ommended that you visit an INFINITI retailer
for this service. Since the registration process
requires erasing all memory in the Intelligent
Key components when registering new keys,
be sure to take all Intelligent Keys that you
have to an INFINITI retailer.
A key number plate is supplied with your keys.
Record the key number and keep it in a safe
place (such as your wallet), not in the vehicle.
If you lose your keys, it is recommended that
you visit an INFINITI retailer for duplicates by
using the key number. INFINITI does not re-
cord key numbers so it is very important to
keep track of your key number plate.
A key number is only necessary when you
have lost all keys and do not have one to
duplicate from. If you still have a key, it can be
duplicated without knowing the key number.
CAUTION
Be sure to carry the Intelligent Key with
you when driving. The Intelligent Key is a
precision device with a built-in transmit-
ter. To avoid damaging it, please note the
following:
– The Intelligent Key is water resistant;
however, wetting may damage the In-
telligent Key. If the Intelligent Key gets
wet, immediately wipe until it is com-
pletely dry.
– Do not bend, drop or strike it against
another object.
– If the outside temperature is below 14°F
(-10°C), the battery of the Intelligent
Key may not function properly.
– Do not place the Intelligent Key for an
extended period in a place where tem-
peratures exceed 140°F (60°C).
– Do not change or modify the Intelligent
Key.
– Do not use a magnet key holder.
– Do not place the Intelligent Key near an
electric appliance such as a television set
or a personal computer.
LPD2889
1. Intelligent Keys (two sets)
2. Mechanical key
3. Key number plate (one plate)
KEYS
3-2Pre-driving checks and adjustments

•Make sure to engage the P (Park) posi-
tion 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 result in serious
personal injury or property damage.
The Intelligent Key system can operate all the
door locks using the remote control function
or pushing the request switch on the vehicle
without taking the key out from a pocket or
purse. The operating environment and/or
conditions may affect the Intelligent Key sys-
tem operation.
Be sure to read the following before using the
Intelligent Key system.
CAUTION
• Be sure to carry the Intelligent Key with
you when operating the vehicle.
• Never leave the Intelligent Key in the ve-
hicle when you leave the vehicle.
The Intelligent Key is always communicating
with the vehicle as it receives radio waves.
The Intelligent Key system transmits weak
radio waves. Environmental conditions may 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 broadcast-
ing station.
• When in possession of wireless equipment, such as a cellular telephone, transceiver or
a CB radio.
• When the Intelligent Key is in contact with or covered by metallic materials.
• When any type of radio wave remote con- trol 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, see “Vehicle information display
warnings and indicators” (P. 2-24).
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, see “Battery re-
placement” (P. 8-22).
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.
Pre-driving checks and adjustments3-7

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.The operating range of the engine start func-
tion is inside of the vehicle
O1.
• The luggage area is not included in the operating range, but the Intelligent Key
may function.
• If the Intelligent Key is placed on the instru- ment panel or 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 Intelli-
gent 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 vehicle is in P (Park) position.
The battery saver feature will be canceled if
any of the following occur:
• Any door is opened.
• The shift position is shifted 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.LSD2020
5-14Starting and driving

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, see the “Monitor, climate, audio,
phone and voice recognition systems”
(P. 4-2).
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 con-secutive times in less than 1.5 seconds, 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 vehicle in the P (Park) position.
2. Firmly apply the foot brake. 3.
Touch the ignition switch with the Intelli-
gent Key as illustrated. (A chime will sound.)
4. Push the ignition switch while depressing
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 bat-
tery discharge indicator may appear in the
vehicle information display even when the
Intelligent Key is inside the vehicle. This is
not a malfunction. To turn off the Intelli-
gent Key battery discharge indicator,
touch the ignition switch with the Intelli-
gent Key again.
• If the Intelligent Key battery discharge in- dicator appears, replace the battery as
soon as possible. For additional informa-
tion, see “Battery replacement” (P. 8-22).
LSD3572
Starting and driving5-15

Severe use maintenance:
Inspections:
• Brake pads & rotors
• Exhaust system
• Propeller shaft (AWD models)
• Drive shaft boots
• Steering gear & linkage
• Axle & suspension parts
Essentials:
• Replace brake fluid
(1) If towing a trailer, using a camper or a
car-top carrier, or driving on rough or muddy
roads, change (not just inspect) oil every
20,000 miles (32,000 km) or 24 months.
(2) If the oil replacement indicator is dis-
played, change the engine oil and filter within
two weeks or less than 500 miles (800 km).11,250 miles/(18,000 km)/18 months
Perform at number of miles, kilometers or
months, whichever comes first.
Standard maintenance:
Inspections:
• Intelligent key battery
• Horn, lights, signals, wipers, rear hatch/hood lift supports
• All fluids inspected (engine, wiper, brake, power steering, coolant)
• Engine drive belts and hose inspections
• Engine air filter
•
Suspension components (shocks, subframe,
tie rods)
• Differential and fluid (AWD models)
• Battery terminals and cables, battery test
• Tire pressure, treadwear and depth
Essentials:
• Replace in-cabin microfilter Severe use maintenance:
Inspections:
• Brake pads & rotors
• Exhaust system
• Propeller shaft (AWD models)
• Drive shaft boots
• Steering gear & linkage
• Axle & suspension parts
9-10Maintenance and schedules

18,750 miles/(30,000 km)/
30 months
Perform at number of miles, kilometers or
months, whichever comes first.
Standard maintenance:
Not applicable. Proceed to next interval.
Severe use maintenance:
Inspections:
• Brake pads & rotors
• Exhaust system
• Propeller shaft (AWD models)
• Drive shaft boots
• Steering gear & linkage
• Axle & suspension parts
• Horn, lights, signals, wipers, rear hatch/hood lift supports
• All fluids inspected (engine, wiper, brake, power steering, coolant)
• Engine drive belt and hose inspections
• Engine air filter
•
Suspension components (shocks, subframe,
tie rods)
• Differential and fluid (AWD models)
• Battery terminals and cables, battery test
• Tire pressure, treadwear and depth
22,500 miles/(36,000 km)/
36 months
Perform at number of miles, kilometers or
months, whichever comes first.
Standard maintenance:
Inspections:
• Brake lines & cables
• Brake pads & rotors
• CVT transmission fluid
• Propeller shaft (AWD models)
• Differential gear oil (AWD models) (1)
• Transfer case oil (AWD models) (1)
• Drive shaft boots
• Horn, lights, signals, wipers, rear hatch/ hood lift supports
• All fluids inspected (engine, wiper, brake, power steering, coolant)
• Engine drive belts and hose inspections
• Engine air filter
•
Suspension components (shocks, subframe,
tie rods)
• Differential and fluid (AWD models)
• Battery terminals and cables, battery test
• Tire pressure, treadwear and depth Essentials:
• Replace engine oil & filter (2)
• Tire rotation
• Replace in-cabin microfilter
• Replace Intelligent Key battery
Severe use maintenance:
Inspections:
• Brake pads & rotors
• Exhaust system
• Propeller shaft (AWD models)
• Drive shaft boots
• Steering gear & linkage
• Axle & suspension parts
Essentials:
• Replace brake fluid
(1) If towing a trailer, using a camper or a
car-top carrier, or driving on rough or muddy
roads, change (not just inspect) oil every
20,000 miles (32,000 km) or 24 months.
(2) If the oil replacement indicator is dis-
played, change the engine oil and filter within
two weeks or less than 500 miles (800 km).
9-12Maintenance and schedules

(2) If the oil replacement indicator is dis-
played, change the engine oil and filter within
two weeks or less than 500 miles (800 km).
(3) If operating mainly in dusty conditions,
more frequent maintenance may be required.
* Maintenance items and intervals with“*”
are recommended by INFINITI for reliable
vehicle operation. The owner need not per-
form such maintenance in order to maintain
the emission warranty or manufacturer recall
liability. Other maintenance items and inter-
vals are required.33,750 miles/(54,000 km)/
54 months
Perform at number of miles, kilometers or
months, whichever comes first.
Standard maintenance:
Inspections:
• Horn, lights, signals, wipers, rear hatch/hood lift supports
• All fluids inspected (engine, wiper, brake, power steering, coolant)
• Engine drive belts and hose inspections
• Engine air filter
•
Suspension components (shocks, subframe,
tie rods)
• Differential and fluid (AWD models)
• Battery terminals and cables, battery test
• Tire pressure, treadwear and depth
Essentials:
• Replace in-cabin microfilter
• Replace Intelligent Key battery Severe use maintenance:
Inspections:
• Brake pads & rotors
• Exhaust system
• Propeller shaft (AWD models)
• Drive shaft boots
• Steering gear & linkage
• Axle & suspension parts
9-14Maintenance and schedules