2020 INFINITI QX50 Owner's Manual

CAUTION
∙ Do not ground accessories directly to thebattery terminal. Doing so will bypass the
variable voltage control system and the
vehicle battery may not charge
completely.
∙ Use electrical accessories with the engine running to avoid discharging the vehicle
battery.
Your vehicle is equipped with a variable volt-
age control system. This system measures
the amount of electrical discharge from the
battery and controls voltage generated by
the generator. The current sensor
Ais located near the
battery along the negative battery cable. If
you add electrical accessories to your vehicle,
be sure to ground them to a suitable body
ground such as the frame or engine block
area.
1. Automatic tensioner pulley
2. Generator pulley
3. Water pump pulley
4. Air conditioner compressor pulley
5. Crankshaft pulley
WARNING
Be sure the ignition switch is in the OFF or
LOCK position before servicing drive belt.
The engine could rotate unexpectedly.
1. Visually inspect the belt for signs of un- usual wear, cuts, or fraying. If the belt is
in poor condition, have it replaced. It is
recommended that you visit an INFINITI
retailer for this service.
LDI3164WDI0638
VARIABLE VOLTAGE CONTROL
SYSTEM DRIVE BELT
Do-it-yourself8-13

2. Have the belt checked regularly for con-dition.
REPLACING SPARK PLUGS
Iridium-tipped spark plugs
It is not necessary to replace iridium-tipped
Aspark plugs as frequently as conventional
type spark plugs because they last much lon-
ger. Follow the maintenance log shown in the
"Maintenance and schedules" section of this
manual. Do not service iridium-tipped spark
plugs by cleaning or regapping.
∙ Always replace spark plugs with recom-
mended or equivalent ones.
WARNING
Be sure the engine and ignition switch are
off and that the parking brake is engaged
securely.
CAUTION
Be sure to use the correct socket to remove
the spark plugs. An incorrect socket can
damage the spark plugs.
If replacement is required, it is recommended
that you visit an INFINITI retailer for this
service.
SDI1895
SPARK PLUGS
8-14Do-it-yourself

WARNING
∙ Operating the engine with the air cleanerfilter off can cause you or others to be
burned. The air cleaner filter not only
cleans the intake air, it also stops the
flame if the engine backfires. If the air
cleaner is not installed and the engine
backfires, you could be burned. Never
drive with the air cleaner filter off. Be
cautious working on the engine when the
air cleaner is off. ∙ Never pour fuel into the throttle body or
attempt to start the engine with the air
cleaner removed. Doing so could result in
serious injury.
To remove the filter from the air cleaner, push
the tabs
Aand pull the cover upward.
The viscous paper type filter element should
not be cleaned and reused. Replace it accord-
ing to the maintenance log shown in the
“Maintenance and schedules” section of this
manual.
When replacing the air filter, wipe the inside
of the air cleaner housing and the cover with
a damp cloth.
NOTE:
After installing a new air cleaner filter, make
sure the air cleaner cover is seated in the
housing and latch the clips
A.
IN-CABIN MICROFILTER
The in-cabin microfilter restricts the entry of
airborne dust and pollen particles and re-
duces some objectionable outside odors. The
filter is located behind the glove box. For
additional information on change intervals,
refer to the "Maintenance and schedules"
section of this manual.
If replacement is required, it is recommended
that you visit an INFINITI retailer for this
service.
LDI3165
AIR CLEANER
Do-it-yourself8-15

CLEANING
If your windshield is not clear after using the
windshield-washer or if a wiper blade chat-
ters when running, wax or other material may
be on the blade or windshield.
Clean the outside of the windshield with a
washer solution or a mild detergent. Your
windshield is clean if beads do not form when
rinsing with clear water.
Clean each blade by wiping it with a cloth
soaked in a washer solution or a mild deter-
gent. Then rinse the blades with clear water.
If your windshield is still not clear after clean-
ing the blades and using the wiper, replace
the blades.
CAUTION
Worn windshield wiper blades can damage
the windshield and impair driver vision.
REPLACING
Replace the wiper blades if they are worn.
To replace the windshield wiper blades, fol-
low the procedure below:1. When the ignition switch is ON or within 60 seconds after placing the ignition
switch from the ON to OFF position,
place the windshield wiper and washer
lever into the OFF position.
2. Rapidly lift the windshield wiper and washer lever
Aupwards twice within
0.5 seconds. This action will cause the
wipers to automatically take the service
position. 3. Once the wipers are in the service posi-
tion, push the release tab
C.
4. Move the wiper blade down
Band re-
move.
5. Insert the new wiper blade onto the wiper arm until it clicks into place.
6. Rotate the wiper blade so the dimple is in the groove.
LDI3250LDI2785
WINDSHIELD WIPER BLADES
8-16Do-it-yourself

7. Finally, lift the windshield wiper andwasher lever to the mist position
Donce
and release. This action will cause the
wipers to resume the set position.
CAUTION
∙ After wiper blade replacement, return the wiper arm to its original position;
otherwise it may be damaged when the
hood is opened.
∙ Make sure the wiper blades contact the glass; otherwise the arms may be dam-
aged from wind pressure. If you wax the surface of the hood, be careful
not to let wax get into the washer nozzle
F.
This may cause clogging or improper
windshield-washer operation. If wax gets
into the nozzle, remove it with a needle or
small pin
E.
Rear window wiper blade
If checking or replacement is required, it is
recommended that you visit an INFINITI re-
tailer for this service.
LDI3251
LDI3189
Do-it-yourself8-17

If the brakes do not operate properly, it is
recommended that you have the brakes
checked. It is recommended that you visit an
INFINITI retailer for this service.
Self-adjusting brakes
Your vehicle is equipped with self-adjusting
brakes.
The front and rear disc-type brakes self-
adjust every time the brake pedal is applied.
WARNING
Have your brake system checked if the
brake pedal height does not return to nor-
mal. It is recommended that you visit an
INFINITI retailer for this service.
Brake pad wear indicators
The disc brake pads on your vehicle have
audible wear indicators. When a brake pad
requires replacement, a high pitched scraping
or screeching sound will be heard when the
vehicle is in motion. The noise will be heard
whether or not the brake pedal is depressed.
Have the brakes checked as soon as possible
if the wear indicator sound is heard.Under some driving or climate conditions, oc-
casional brake squeak, squeal or other noise
may be heard. Occasional brake noise during
light to moderate stops is normal and does
not affect the function or performance of the
brake system.
Proper brake inspection intervals should be
followed.
For additional information regard-
ing brake inspections, refer to the appropri-
ate maintenance schedule information in the
"Maintenance and schedules" section of this
manual.
If any electrical equipment does not operate,
check for an open fuse.
Fuses are used in the passenger and engine
compartment. Spare fuses are provided and
can be found in the passenger compartment
fuse box.
When installing a fuse make sure the fuse is
installed in the fuse box securely.
LDI2997
BRAKES FUSES
8-18Do-it-yourself

ENGINE COMPARTMENT
WARNING
Never use a fuse of higher or lower amper-
age rating than that specified on the fuse
box cover. This could damage the electrical
system or electronic control units or cause a
fire.If any electrical equipment does not come on,
check for an open fuse.
1. Be sure the ignition switch and the head- light switch are OFF.
2. Open the engine hood.
3. Remove the fuse box cover by pushing the tabs and lifting the cover up.
4. Remove the fuse with the fuse puller. The fuse puller is located in the fuse
block in the passenger compartment.
5. If the fuse is open
A, replace it with a
new fuse
B.
6. If a new fuse also opens, have the elec- trical system checked and repaired. It is
recommended that you visit an INFINITI
retailer for this service.
Fusible links
If the electrical equipment does not operate
and fuses are in good condition, check the
fusible links. If any of these fusible links are
melted, replace with only Genuine NISSAN
parts.
LDI3174LDI3200
Do-it-yourself8-19

PASSENGER COMPARTMENT
WARNING
Never use a fuse of higher or lower amper-
age rating than that specified on the fuse
box cover. This could damage the electrical
system or electronic control units or cause a
fire.
If any electrical equipment does not operate,
check for an open fuse. NOTE:
The fuse box is located on the driver’s side of
the instrument panel.
1. Be sure the ignition switch and the head- light switch are OFF.
2. Remove the fuse box cover
Awith a
suitable tool. Use a cloth to avoid dam-
aging the trim.
3. Locate the fuse that needs to be re- placed.
4. Remove the fuse with the fuse puller
B. 5. If the fuse is open
C, 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.
LDI3167LDI3203
8-20Do-it-yourself