Replace Battery INFINITI QX50 2019 User Guide

When performing any inspection or mainte-
nance work on your vehicle, always take care
to prevent serious accidental injury to your-
self or damage to the vehicle. The following
are general precautions which should be
closely observed.
WARNING
∙ Park the vehicle on a level surface, applythe parking brake securely and block the
wheels to prevent the vehicle from mov-
ing. Move the shift lever to P (Park).
∙ Be sure the ignition switch is in the OFF or LOCK position when performing any
parts replacement or repairs.
∙ If you must work with the engine running, keep your hands, clothing, hair and tools
away from moving fans, belts and any
other moving parts.
∙ It is advisable to secure or remove any loose clothing and remove any jewelry,
such as rings, watches, etc. before work-
ing on your vehicle.
∙ Always wear eye protection whenever you work on your vehicle. ∙ Your vehicle is equipped with an auto-
matic engine cooling fan. It may come on
at any time without warning, even if the
ignition switch is in the OFF position and
the engine is not running. To avoid injury,
always disconnect the negative battery
cable before working near the fan.
∙ If you must run the engine in an enclosed space such as a garage, be sure there is
proper ventilation for exhaust gases to
escape.
∙ Never get under the vehicle while it is supported only by a jack. If it is necessary
to work under the vehicle, support it with
safety stands.
∙ Keep smoking materials, flame and sparks away from the fuel tank and
battery.
∙ Because the fuel lines on gasoline engine models are under high pressure even
when the engine is off, it is recommended
that you visit an INFINITI retailer for ser-
vice of the fuel filter or fuel lines.
CAUTION
∙ Do not work under the hood while theengine is hot. Turn the engine off and
wait until it cools down. ∙ Avoid contact with used engine oil and
coolant. Improperly disposed engine oil,
engine coolant and/or other vehicle flu-
ids can damage the environment. Always
conform to local regulations for disposal
of vehicle fluid.
∙ Never leave the engine or Continuously Variable Transmission (CVT) related
component harnesses disconnected
while the ignition switch is in the ON
position.
∙ Never connect or disconnect the battery or any transistorized component while
the ignition switch is in the ON position.
This “Do-it-yourself” section gives instruc-
tions regarding only those items which are
relatively easy for an owner to perform.
A Genuine INFINITI service manual is also
available. For additional information, refer to
“Owner’s Manual/Service Manual order in-
formation” in the “Technical and consumer
information” section of this manual.
You should be aware that incomplete or im-
proper servicing may result in operating diffi-
culties or excessive emissions, and could af-
fect warranty coverage. If in doubt about any
servicing, it is recommended that you have it
done by an INFINITI retailer.
MAINTENANCE PRECAUTIONS
8-2Do-it-yourself

WARNING
∙ Do not expose the battery to flames, anelectrical spark or a cigarette. Hydrogen
gas generated by the battery is explo-
sive. Explosive gases can cause blindness
or injury. Do not allow battery fluid to
contact your skin, eyes, fabrics or painted
surfaces. Sulfuric acid can cause blind-
ness or injury. After touching a battery or
battery cap, do not touch or rub your
eyes. Thoroughly wash your hands. If the
acid contacts your eyes, skin or clothing,
immediately flush with water for at least
15 minutes and seek medical attention.
∙ Do not operate the vehicle if the fluid in the battery is low. Low battery fluid can
cause a higher load on the battery which
can generate heat, reduce battery life,
and in some cases lead to an explosion.
∙ When working on or near a battery, al- ways wear suitable eye protection and
remove all jewelry.
∙ Battery posts, terminals and related ac- cessories contain lead and lead com-
pounds. Wash hands after handling.
∙ Keep battery out of the reach of children.
∙ Do not tip the battery. Keep the vent caps tight and the battery level. NOTE:
Do not try to open the top of the battery.
This battery is not equipped with removable
vent caps.
Vehicles operated in high temperatures or
under severe conditions require frequent
checks of the battery fluid level.
JUMP STARTING
If jump starting is necessary, refer to “Jump
starting” in the “In case of emergency” section
of this manual. If the engine does not start by
jump starting, the battery may have to be
replaced. It is recommended that you visit an
INFINITI retailer for this service.
LDI2817
8-12Do-it-yourself

5. If the fuse is openC, replace it with an
equivalent good fuse
D.
6. Push the fuse box cover to install.
If a new fuse also opens, have the electrical
system checked and repaired. It is recom-
mended that you visit an INFINITI retailer for
this service. NOTE:
Your vehicle may not be equipped with all
fuses listed on the fuse label.
CAUTION
Be careful not to allow children to swallow
the battery or removed parts.
LDI3203
BATTERY REPLACEMENT
Do-it-yourself8-21

INFINITI INTELLIGENT KEY
Replace the battery in the Intelligent Key as
follows:1. Remove the mechanical key from the In- telligent Key.
2. Insert a small flathead screwdriver
A
into the slitBof the corner and twist it
to separate the upper part from the
lower part. Place a cloth over the screw-
driver to protect the casing.
LDI2001LDI2637
8-22Do-it-yourself

3. Replace the battery with a new one.Recommended battery: CR2032 or
equivalent.
∙ Do not touch the internal circuit andelectric terminals as doing so could
cause a malfunction.
∙ Hold the battery by the edges. Holding the battery across the contact points
will seriously deplete the storage ca-
pacity.
∙ Make sure that the + side faces the bottom of the lower part.
4. Close the lid securely as illustrated with
CandD.
5. Operate the buttons to check the opera- tion.
If you need assistance with replacement, it is
recommended that you visit an INFINITI re-
tailer for this service. FCC Notice:
For USA:
This device complies with Part 15 of the FCC
Rules. Operation is subject to the following
two conditions: (1) This device may not
cause harmful interference, and (2) this de-
vice must accept any interference received,
including interference that may cause unde-
sired operation.
Note: Changes or modifications not ex-
pressly approved by the party responsible
for compliance could void the user’s author-
ity to operate the equipment.
For Canada:
This device complies with Industry Canada
licence-exempt RSS standard(s). Operation
is subject to the following two conditions: (1)
this device may not cause interference, and
(2) this device must accept any interference,
including interference that may cause unde-
sired operation of the device.
HEADLIGHTS
For additional information on headlight bulb
replacement, refer to the instructions out-
lined in this section.
Replacing the LED headlight bulb
If LED headlight bulb replacement is re-
quired, it is recommended that you visit an
INFINITI retailer for this service.
FOG LIGHTS (if so equipped)
For additional information on fog light bulb
replacement, refer to the instructions out-
lined in this section.
Replacing the LED fog light bulb
If LED fog light bulb replacement is required,
it is recommended that you visit an INFINITI
retailer for this service.
LIGHTS
Do-it-yourself8-23

CHASSIS & BODY
MAINTENANCE
Abbreviations: I = Inspect and correct or replace as necessary, R = Replace,
MAINTENANCE OPERATION
Perform at number of miles, kilometers or months, whichever comes first. Miles x 1,000
(km x 1,000) Months MAINTENANCE INTERVAL
3.75 (6)6 7.5
(12) 12 11.25
(18)18 15
(24) 24 18.75
(30)30 22.5
(36) 36 26.25
(42)42 30
(48) 48 33.75
(54)54 37.5
(60) 60 41.25
(66)66 45
(72) 72
Brake lines & cables II I II I
Brake pads & rotors II I II I
Brake fluid RRR
CVT fluid See NOTE (1)II I II I
Transfer fluid & differential gear oil See NOTE (2)II I II I
Steering gear & linkage, axle & suspension parts  III
Tire rotation See NOTE (3)
Propeller shaft & drive shaft boots (AWD models) II I II I
Exhaust system III
In-cabin microfilter RRRR
Intelligent Key battery IRRR
Maintenance and schedules9-11

11 Index
2nd row bench seat adjustment.......1-4
A
Active noise cancellation Active sound enhancement . .5-193, 5-193
Aiming control, headlights .........2-44
Air bag (See supplemental restraint
system).....................1-43
Air bag system Front (See supplemental front impact air
bag system) ................1-50
Air bag warning labels ............1-62
Airbagwarninglight.........1-62,2-15
Air bag warning light,
supplemental ..............1-62,2-15
Air cleaner ...................8-15
Air cleaner housing filter ...........8-15
Air conditioner Air conditioner operation ........4-37
Air conditioner specification label . .10-12
Air conditioner system refrigerant and oil
recommendations ............10-7
Heater and air conditioner (automatic)
(if so equipped) ..............4-36
Heater and air conditioner controls . .4-37
Servicing air conditioner .........4-43
Alarm system
(See vehicle security system) ........2-32
Anchor point locations ............1-26
Antenna ....................4-44
Antifreeze ..................5-191 Anti-lock brake warning light
........2-10
Anti-lock Braking System (ABS) .....5-180
Armrests.....................1-5
Around View® Monitor ...........4-11
Audible reminders ..............2-18
Autolight switch ...............2-40
Automatic Automatic drive positioner . . .3-38, 3-41
Automatic power window switch . . .2-67
Automatic anti-glare inside mirror .....3-36
Automaticbrakehold ............5-26
Automatic door locks .............3-6
Automatic drive positioner .....3-38,3-41
B
Backup Collision Intervention (BCI) ....5-65
Battery.................5- 191, 8-11
Charge warning light ...........2-11
Battery replacement .............8-21
INFINITI Intelligent Key .........8-22
Keyfob...................8-21
Before starting the engine ..........5-17
Belt (See drive belt) ..............8-13
Blind Spot Intervention® (BSI) .......5-53
Blind Spot Warning (BSW) .........5-44
Boosterseats.................1-39
Brake Anti-lock Braking System (ABS) . . .5-180
Brakefluid.................8-10
Brakelight(Seestoplight) .......8-24
Brake system ...............5-179 Brakewarninglight ...........2-10
Brake wear indicators
......2-18,8-18
Self-adjusting brakes ..........8-18
Brakeassist .................5-181
Brakefluid...................8-10
Brakes.....................8-18
Brake system ................. 5-179
Break-in schedule ..............5-170
Brightness control Instrument panel .............2-45
Bulb check/instrument panel ........2-10
Bulb replacement ............... 8-24
C
Camera Aiding Sonar (parking sensor) . .4-24
Capacities and recommended
fuel/lubricants ................10-2
Cargoareastoragebin...........2-60
Cargo
(See vehicle loading information) .....10-14
Car phone or CB radio ............4-45
Chassis control ............... 5

-184
Check tire pressure .............. 2-26
Child restraints .....1-19,1-20, 1-22, 1-24
LATCH (Lower Anchors and Tethers for
CHildren) System .............1-24
Precautions on child
restraints ......1-22,1-29,1 -35, 1-40
Top tether strap anchor point
locations..................1-26
Child restraint with top tether strap ....1-26

Front-door pocket...............2-55
Front power seat adjustment .........1-3
Frontseats....................1-2
Fuel Capacities and recommended
fuel/lubricants...............10-2
Fuel economy ...............5-172
Fuel-filler door and cap ..........3-31
Fuel gauge ..................2-7
Fueloctanerating.............10-5
Fuel recommendation ...........10-3
Loose fuel cap warning ..........2-26
Fuel efficient driving tips ..........5-171
Fuel-filler door .................3-31
Fuel gauge ....................2-7
Fuses ......................8-19
Fusiblelinks ..................8-20
G
Garage door opener, HomeLink® Universal
Transceiver...........2-72,2-73,2-74, 2-75, 2-75, 2-76
Gascap.....................3-31
Gauge Engine coolant temperature gauge ....2-6
Fuel gauge ..................2-7
Odometer ...................2-5
Speedometer ..............2-4,2-5
Tachometer .................2-6
Trip odometer .............2-4,2-5
General maintenance ..............9-2
Glovebox....................2-57
Gloveboxlock.................2-57
Grocery hooks .................2-61 H
Hazard warning flasher switch ........6-2
Headlight aiming control ...........2-44
Headlight and turn signal switch ......2-39
Headlights ...................8-23
Headlights, aiming control ..........2-44
Headlight switch ................2-39
Head restraints ..................1-7
Heated seats ..................2-48
Heater Heater and air conditioner (automatic)
(if so equipped) ...............4-36
Heater and air conditioner controls . . .4-37
Heater operation .............4-38
Heater and air conditioner (automatic) . . .4-36
Heater and air conditioner settings .....4-43
Hill start assist system ............5-186
HomeLink® Universal
Transceiver...........2-72,2-73,2-74, 2-75, 2-75, 2-76
Hood ......................3-24
Hook Luggage hook ...............2-60
Horn.......................2-46
I
Ignition switch Push-button ignition switch .......5-13
Immobilizer system ..............5-17
Important vehicle information label ....10-11
In-cabin microfilter ..............8-15
Increasing fuel economy ..........5-172Indicator lights and audible reminders
(See warning/indicator lights and audible
reminders)
.............2-9,2-10,2-15
INFINITI Drive Mode Selector ........5-29
INFINITI Intelligent Key System .....3-2, 3-7
INFINITI InTouch™ Owner's Manual .....4-2
INFINITI Vehicle Immobilizer
System ...............
2-
33,3-4,5-17
Inside automatic anti-glare mirror .....3-36
Instrument brightness control ........2-45
Instrument panel .............0-6,2-2
Instrument panel dimmer switch ......2-45
Intelligent All-Wheel Drive (AWD) .....5-172
Intelligent Cruise Control (ICC)
(for vehicles without ProPILOT Assist) . .5-84
Intelligent Key system Key operating range ............3-9
Keyoperation................3-11
Mechanical key ...............3-3
Remote keyless entry operation .....3-15
Troubleshooting guide ..........3-18
Warningsignals..............3-18
Interiorlight...................2-71
ISOFIX child restraints ............1-24
J
Jump starting ............... 6-5, 8-12
K
Key.........................3-2
Key fob battery replacement .........8-21
11-3