2021 INFINITI Q50 suspension

.Do not use a wax containing any abra-
sives, cutting compounds or cleaners
that may damage the vehicle finish.
Machine compound or aggressive polishing
on a base coat/clear coat paint finish may
dull the finish or leave swirl marks.
REMOVING SPOTS
Remove tar and oil spots, industrial dust,
insects, and tree sap as quickly as possible
from the paint surface to avoid lasting
damage or staining. Special cleaning pro-
ducts are available at an INFINITI retailer or
any automotive accessory stores.
UNDERBODY
In areas where road salt is used in winter, the
underbody must be cleaned regularly. This
will prevent dirt and salt from building up
and causing the acceleration of corrosion on
the underbody and suspension. Before the
winter period and again in the spring, the
underseal must be checked and, if necessary,
re-treated.
GLASS
Use glass cleaner to remove smoke and dust
film from the glass surfaces. It is normal for
glass to become coated with a film after the
vehicle is parked in the hot sun. Glass cleaner
and a soft cloth will easily remove this film.
CAUTION
When cleaning the inside of the win-
dows, do not use sharp-edged tools,
abrasive cleaners or chlorine-based dis-
infectant cleaners. They could damage
the electrical conductors, radio antenna
elements or rear window defroster ele-
ments.
WHEELS
Wash the wheels when washing the vehicle
to maintain their appearance.
. Clean the inner side of the wheels when
the wheel is changed or the underside of
the vehicle is washed.
. Inspect wheel rims regularly for dents or
corrosion. Such damage may cause loss
of pressure or poor seal at the tire bead.
. INFINITI recommends that the road
wheels be waxed to protect against road
salt in areas where it is used during winter.
CAUTION
Do not use abrasive cleaners when
washing the wheels.
Aluminum alloy wheels
Wash regularly with a sponge dampened in a
mild soap solution, especially during winter
months in areas where road salt is used. Salt
could discolor the wheels if not removed.
CAUTION
Follow the directions below to avoid
staining or discoloring the wheels:
.
Do not use a cleaner that uses strong
acid or alkali contents to clean the
wheels.
. Do not apply wheel cleaners to the
wheels when they are hot. The wheel
temperature should be the same as
ambient temperature.
. Rinse the wheel to completely re-
move the cleaner within 15 minutes
after the cleaner is applied.
Appearance and care7-3

.Increase your following distance to allow
for increased stopping distances.
. Avoid sudden maneuvers, hard cornering
and hard braking.
WARNING
. Although you can continue driving
with a punctured run-flat tire, re-
member that vehicle handling stabi-
lity is reduced, which could lead to an
accident and personal injury. Also,
driving a long distance at high speeds
may damage the tire.
. Do not drive at speeds above 50
MPH (80 km/h) and do not drive
more than approximately 93 miles
(150 km) with a punctured run-flat
tire. The actual distance the vehicle
can be driven on a flat tire depends on
outside temperature, vehicle load,
road conditions and other factors.
. Drive safely at reduced speeds. Avoid
hard cornering or braking, which may
cause you to lose control of the
vehicle.
. If you detect any unusual sounds or
vibrations while driving with a punc-
tured run-flat tire, pull off the road
to a safe location and stop the vehicle as soon as possible. The tire may be
seriously damaged and need to be
replaced.
CAUTION
.
Never install tire chains on a punctu-
red run-flat tire, as this could damage
your vehicle.
. Avoid driving over any projection or
pothole, as the clearance between
the vehicle and the ground is smaller
than normal.
. Do not enter an automated car wash
with a punctured run-flat tire.
. It is recommended you have the
punctured tire inspected by an
INFINITI retailer or other authorized
repair shop. Replace the tire as soon
as possible if the tire is seriously
damaged.
TIRE CHAINS
CAUTION
Tire chains/cables should not be in-
stalled on 265/35RF19 tires. Doing so
will cause damage to the vehicle. If you
plan to use tire chains/cables, you
should install 245/40RF19 tires on your
vehicle.
Use of tire chains may be prohibited accord-
ing to location. Check the local laws before
installing tire chains. When installing tire
chains, make sure they are the proper size
for the tires on your vehicle and are installed
according to the chain manufacturer’s sug-
gestions. Use only SAE Class S chains. Class
“S” chains are used on vehicles with re-
stricted tire to vehicle clearance. Vehicles
that can use Class “S” chains are designed to
meet the SAE standard minimum clearances
between the tire and the closest vehicle
suspension or body component required to
accommodate the use of a winter traction
device (tire chains or cables). The minimum
clearances are determined using the factory
equipped tire size. Other types may damage
your vehicle. Use chain tensioners when
recommended by the tire chain manufac-
turer to ensure a tight fit. Loose end links of
Do-it-yourself8-33

9-8Maintenance and schedules
The following shows the maintenance schedule.
Choose the maintenance schedule needed based on your vehicle driving conditions.
After 120,000 miles (192,000 km)/144 months, continue maintenance at the same mileage/time interval.
5,000 Miles/6 Months/8,000 KmStandard maintenance:.Perform tire rotation (1)
Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models)
(1) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.
10,000 Miles/12 Months/16,000
Km
Standard maintenance:.Inspect brake lines and cables.Inspect brake pads and rotors.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Inspect stop lamp switch and brake pedal
position switch (1)
.Inspect transfer fluid (2).Inspect differential gear oil (2).Replace engine oil and filter (3).Perform tire rotation (4) Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Replace brake fluid
(1) Inspect the clearance between the brake pedal
and the switches.
(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) If the oil replacement indicator is displayed,
change the engine oil and filter as soon as
possible. After replacing the engine oil, reset the
display.
(4) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.
STANDARD MAINTENANCE

15,000 Miles/18 Months/24,000
Km
Standard maintenance:.Inspect Intelligent Key battery.Replace In-cabin microfilter.Perform tire rotation (1)
Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models)
(1) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.
20,000 Miles/24 Months/32,000
Km
Standard maintenance:.Inspect brake lines and cables.Inspect brake pads and rotors.Inspect EVAP vapor lines and fuel lines.Inspect exhaust system.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect stop lamp switch and brake pedal
position switch (1)
.Inspect transfer fluid.Inspect differential gear oil.Replace brake fluid.Replace engine oil and filter (2).Perform tire rotation (3) Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Replace brake fluid.Replace transfer fluid.Replace differential gear oil
(1) Inspect the clearance between the brake pedal
and the switches.
(2) If the oil replacement indicator is displayed,
change the engine oil and filter as soon as
possible. After replacing the engine oil, reset the
display.
(3) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.
Maintenance and schedules9-9

9-10Maintenance and schedules
25,000 Miles/30 Months/40,000
Km
Standard maintenance:.Perform tire rotation (1)
Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models)
(1) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.
30,000 Miles/36 Months/48,000
Km
Standard maintenance:.Inspect brake lines and cables.Inspect brake pads and rotors.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Inspect stop lamp switch and brake pedal
position switch (1)
.Inspect transfer fluid.Inspect differential gear oil.Replace air cleaner filter (2).Replace engine oil and filter (3).Replace In-cabin microfilter.Replace Intelligent Key battery.Perform tire rotation (4) Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Replace brake fluid
(1) Inspect the clearance between the brake pedal
and the switches.
(2) If operating mainly in dusty conditions, more
frequent maintenance may be required.
(3) If the oil replacement indicator is displayed,
change the engine oil and filter as soon as
possible. After replacing the engine oil, reset the
display.
(4) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.

35,000 Miles/42 Months/56,000
Km
Standard maintenance:.Perform tire rotation (1)
Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models)
(1) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.
40,000 Miles/48 Months/64,000
Km
Standard maintenance:.Inspect brake lines and cables.Inspect brake pads and rotors.Inspect drive belts (1).Inspect EVAP vapor lines and fuel lines.Inspect exhaust system.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect stop lamp switch and brake pedal
position switch (2)
.Inspect transfer fluid.Inspect differential gear oil.Replace brake fluid.Replace engine oil and filter (3).Perform tire rotation (4) Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Replace brake fluid.Replace transfer fluid.Replace differential gear oil
(1) Replace the drive belts if found damaged.
(2) Inspect the clearance between the brake pedal
and the switches.
(3) If the oil replacement indicator is displayed,
change the engine oil and filter as soon as
possible. After replacing the engine oil, reset the
display.
(4) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.
Maintenance and schedules9-11

9-12Maintenance and schedules
45,000 Miles/54 Months/72,000
Km
Standard maintenance:.Replace In-cabin microfilter.Replace Intelligent Key battery.Perform tire rotation (1)
Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models)
(1) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.
50,000 Miles/60 Months/80,000
Km
Standard maintenance:.Inspect brake lines and cables.Inspect brake pads and rotors.Inspect drive belts (1).Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Inspect stop lamp switch and brake pedal
position switch (2)
.Inspect transfer fluid.Inspect differential gear oil.Replace engine oil and filter (3).Perform tire rotation (4)
Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Replace brake fluid
(1) Replace the drive belts if found damaged.
(2) Inspect the clearance between the brake pedal
and the switches.
(3) If the oil replacement indicator is displayed,
change the engine oil and filter as soon as
possible. After replacing the engine oil, reset the
display.
(4) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.
55,000 Miles/66 Months/88,000
Km
Standard maintenance:.Perform tire rotation (1)
Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models)
(1) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.

60,000 Miles/72 Months/96,000
Km
Standard maintenance:.Inspect brake lines and cables.Inspect brake pads and rotors.Inspect drive belts (1).Inspect EVAP vapor lines and fuel lines.Inspect exhaust system.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect stop lamp switch and brake pedal
position switch (2)
.Inspect transfer fluid.Inspect differential gear oil.Replace air cleaner filter (3).Replace brake fluid.Replace engine oil and filter (4).Replace In-cabin microfilter.Replace Intelligent Key battery.Perform tire rotation (5)Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models).Replace brake fluid.Replace transfer fluid.Replace differential gear oil
(1) Replace the drive belts if found damaged.
(2) Inspect the clearance between the brake pedal
and the switches.
(3) If operating mainly in dusty conditions, more
frequent maintenance may be required.
(4) If the oil replacement indicator is displayed,
change the engine oil and filter within two weeks
or less than 500 miles (800 km).
(5) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.
65,000 Miles/78 Months/104,000
Km
Standard maintenance:.Perform tire rotation (1)
Severe maintenance:
.Inspect brake pads and rotors.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (AWD models).Inspect drive shaft boots (AWD models)
(1) If your vehicle is equipped with different sized
tires in the front and rear, tires cannot be rotated.
Maintenance and schedules9-13