battery INFINITI QX50 2019 Workshop Manual

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

Seat belts:Check that all parts of the seat
belt system (for example, buckles, anchors,
adjusters and retractors) operate properly
and smoothly, and are installed securely.
Check the belt webbing for cuts, fraying,
wear or damage.
Seats: Check seat position controls such as
seat adjusters, seatback recliner, etc., to en-
sure they operate smoothly and all latches
lock securely in every position. Check that the
head restraints/headrests move up and
down smoothly and the locks (if so equipped)
hold securely in all latched positions.
Steering wheel: Check for changes in the
steering system, such as excessive free play,
hard steering or strange noises.
Warning lights and chimes: Make sure all
warning lights and chimes are operating
properly.
Windshield defroster: Check that the air
comes out of the defroster outlets properly
and in sufficient quantity when operating the
heater or air conditioner.
Windshield wiper and washer*: Check that
the wipers and washer operate properly and
that the wipers do not streak.Under the hood and vehicle
The maintenance items listed here should be
checked periodically (for example, each time
you check the engine oil or refuel).
Battery (except for maintenance free bat-
teries)*: Check the fluid level in each cell. It
should be between the MAX and MIN lines.
Vehicles operated in high temperatures or
under severe conditions require frequent
checks of the battery fluid level.
NOTE:
Care should be taken to avoid situations
that can lead to potential battery discharge
and potential no-start conditions such as:
1. Installation or extended use of elec-
tronic accessories that consume battery
power when the engine is not running
(Phone chargers, GPS, DVD players,
etc.).
2. Vehicle is not driven regularly and/or
only driven short distances.
In these cases, the battery may need to be
charged to maintain battery health.
Brake fluid level*: Make sure that the brake
fluid level is between the MAX and MIN lines
on the reservoir. Engine coolant level*:
Check the coolant level
when the engine is cold.
Engine drive belt*: Make sure the drive belt is
not frayed, worn, cracked or oily.
Engine oil level*: Check the level after parking
the vehicle on a level spot and turning off the
engine. Wait more than 15 minutes for the oil
to drain back into the oil pan.
Exhaust system: Make sure there are no
loose supports, cracks or holes. If the sound
of the exhaust seems unusual or there is a
smell of exhaust fumes, immediately have the
exhaust system inspected. It is recommended
that you visit an INFINITI retailer for this
service. For additional information, refer to
“Exhaust gas (carbon monoxide)” in the
“Starting and driving” section of this manual.
Fluid leaks: Check under the vehicle for fuel,
oil, water or other fluid leaks after the vehicle
has been parked for a while. Water dripping
from the air conditioner after use is normal. If
you should notice any leaks or if fuel fumes
are evident, check for the cause and have it
corrected immediately.
9-4Maintenance and schedules

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

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

Safety chains
Always use suitable safety chains between
your vehicle and the trailer. The safety chains
should be crossed and should be attached to
the hitch, not to the vehicle bumper or axle.
The safety chains can be attached to the
bumper if the hitch ball is mounted to the
bumper. Be sure to leave enough slack in the
chains to permit turning corners.
Trailer lights
CAUTION
When splicing into the vehicle electrical
system, a commercially available power-
type module/converter must be used to
provide power for all trailer lighting. This
unit uses the vehicle battery as a direct
power source for all trailer lights while us-
ing the vehicle tail light, stop light and turn
signal circuits as a signal source. The
module/converter must draw no more than
15 milliamps from the stop and tail lamp
circuits. Using a module/converter that ex-
ceeds these power requirements may dam-
age the vehicle’s electrical system. See a
reputable trailer retailer to obtain the
proper equipment and to have it installed.Trailer lights should comply with federal
and/or local regulations. For assistance in
hooking up trailer lights, contact an INFINITI
retailer or reputable trailer retailer. Vehicles
equipped with the optional trailer tow pack-
age are equipped with a 7-pin trailer harness
connector. If your trailer is equipped with a
flat 4-pin connector, an adapter will be
needed to connect the trailer lights to the
vehicle. Adapters are available at auto parts
stores and hitch retailers.
Trailer brakes
Most states require a separate braking sys-
tem on trailers with a loaded weight above a
specific amount, make sure the trailer meets
the local regulations and the regulations
where you plan to tow.
Several types of braking systems are avail-
able.
Surge Brakes -
The surge brake actuator is
mounted on the trailer tongue with a hydrau-
lic line running to each trailer wheel. Surge
brakes are activated by the trailer pushing
against the hitch ball when the tow vehicle is
braking. Hydraulic surge brakes are common
on rental trailers and some boat trailers. In
this type of system, there is no hydraulic or
electric connection for brake operation be-
tween the tow vehicle and the trailer. Electric Trailer Brakes -
Electric braking sys-
tems are activated by an electronic signal
sent from a trailer brake controller (special
brake-sensing module).
Have a professional supplier of towing
equipment make sure the trailer brakes are
properly installed and demonstrate proper
brake function testing.
WARNING
Never connect a trailer brake system di-
rectly to the vehicle brake system.
Pre-towing tips
∙ Be certain your vehicle maintains a level position when a loaded and/or unloaded
trailer is hitched. Do not drive the vehicle
if it has an abnormal nose-up or nose-
down condition; check for improper
tongue load, overload, worn suspension
or other possible causes of either condi-
tion.
∙ Always secure items in the trailer to pre- vent load shift while driving.
∙ Keep the cargo load as low as possible in the trailer to keep the trailer center of
gravity low.
Technical and consumer information10-25

You may notify INFINITI by contacting
our Consumer Affairs Department,
toll-free, at 1-800-662-6200.
For Canada
If you believe that your vehicle has a
defect which could cause a crash or
could cause injury or death, you should
immediately inform Transport Canada
in addition to notifying INFINITI.
If Transport Canada receives com-
plaints, it may open an investigation,
and if it finds that a safety defect ex-
ists in a group of vehicles, it may re-
quest that INFINITI conduct a recall
campaign. However, Transport
Canada cannot become involved in in-
dividual problems between you, your
retailer, or INFINITI.
You may contact Transport Canada’s
Defect Investigations and Recalls Divi-
sion toll free at 1-800-333-0510. You
may also report safety defects online
at: https://wwwapps.tc.gc.ca/Saf-
Sec-Sur/7/PCDB-BDPP/fc-
cp.aspx?lang=eng (English speakers) orhttps://wwwapps.tc.gc.ca/Saf-Sec-
Sur/7/PCDB-BDPP/fc-
cp.aspx?lang=fra (French speakers)
Additional information concerning mo-
tor vehicle safety may be obtained from
Transport Canada’s Road Safety Infor-
mation Centre at 1-800-333-0371 or
online at www.tc.gc.ca/roadsafety
(English speakers) or www.tc.gc.ca/
securiteroutiere (French speakers).
To notify INFINITI of any safety con-
cerns please contact our Consumer In-
formation Centre toll free at 1-800-
361-4792.
WARNING
A vehicle equipped with All-Wheel Drive
(AWD) should never be tested using a two
wheel dynamometer (such as the dyna-
mometers used by some states for emis-
sions testing), or similar equipment. Make
sure you inform the test facility personnel
that your vehicle is equipped with AWD be-
fore it is placed on a dynamometer. Using
the wrong test equipment may result in
transmission damage or unexpected vehicle
movement which could result in serious ve-
hicle damage or personal injury.
Due to legal requirements in some states and
Canadian Provinces, your vehicle may be re-
quired to be in what is called the “ready con-
dition” for an Inspection/Maintenance (I/M)
test of the emission control system.
The vehicle is set to the “ready condition”
when it is driven through certain driving pat-
terns. Usually, the ready condition can be
obtained by ordinary usage of the vehicle.
If a powertrain system component is repaired
or the battery is disconnected, the vehicle
may be reset to a “not ready” condition. Be-
fore taking the I/M test, check the vehicle’s
inspection/maintenance test readiness con-
dition. Place the ignition switch in the ON
position without starting the engine. If the
READINESS FOR INSPECTION/
MAINTENANCE (I/M) TEST
Technical and consumer information10-31

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