flat GENESIS G90 2023 Workshop Manual

8-27
08
How to Adjust Tire Pressure
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1. Park your vehicle in a safe location.
2. Connect the filling hose O of the
compressor directly to the tire valve.
3. Plug the compressor power cord into
the vehicle power outlet.
4. Adjust the tire inflation pressure to
the recommended tire inflation. With
the ignition switched on, proceed as
follows.
-To increase the inflation pressure:
Switch on the compressor. To
check the current inflation pressure
setting, briefly switch off the
compressor.
-To reduce the inflation pressure:
Press the button U on the
compressor.
NOTICE
Do not let the compressor run for more
than 10 minutes, otherwise the device
will overheat and may be damaged.
Information
• The pressure gauge may show
higher than actual reading when the
compressor is running. To get an
accurate tire reading, the compressor
needs to be turned off.
• When reinstalling the repaired or
replaced tire and wheel on the vehicle,
tighten the wheel bolt to 101~116 lbf·ft
(14~16 kgf·m).
CAUTION
Do not use the sealant when the tire
pressure only needs to be adjusted.
WARNING
The tire inflation pressure must be at
least 32 psi (220 kPa). If it is not, do not
continue driving.
Call for road side service or towing.
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8-28
Emergency Situations
TOWING
Towing Service
ORS081010LORS081010LA : Dollies
If emergency towing is necessary,
we recommend having it done by an
authorized retailer of Genesis Branded
products or a commercial tow-truck
service.
Proper lifting and towing procedures
are necessary to prevent damage to
the vehicle. The use of wheel dollies or
flatbed is recommended.
For 2WD vehicles, it is acceptable to tow
the vehicle with the front wheels on the
ground (without dollies) and the rear
wheels off the ground.
If any of the loaded wheels or suspension
components are damaged or the vehicle
is being towed with the rear wheels on
the ground, use a towing dolly under the
rear wheels.
When being towed by a commercial tow
truck and wheel dollies are not used,
the rear of the vehicle should always be
lifted, not the front.
For AWD vehicles, it must be towed
with a wheel lift and dollies or flatbed
equipment with all the wheels off the
ground.
NOTICE
Do not lift the vehicle by the tow fitting
or body and chassis parts. Otherwise
the vehicle may be damaged.
CAUTION
• Do not tow the vehicle with the rear
wheels on the ground as this may
cause damage to the vehicle.
ORS081014LORS081014L
• Do not tow with sling-type
equipment. Use wheel lift or flatbed
equipment.
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8-31
08
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• Use a towing cable or chain less than
16 ft. (5 m) long. Attach a white or red
cloth (about 12 in. (30 cm) wide) in the
middle of the cable or chain for easy
visibility.
• Drive carefully so the towing cable or
chain remains tight during towing.
• Before towing, check the automatic
transmission for fluid leaks under your
vehicle. If the automatic transmission
fluid is leaking, flatbed equipment or a
towing dolly must be used.
NOTICE
Accelerate or decelerate the vehicle
in a slow and gradual manner while
maintaining tension on the tow rope
or chain to start or drive the vehicle,
otherwise tow hooks and the vehicle
may be damaged.
NOTICE
To avoid damage to your vehicle and
vehicle components when towing:
• Always pull straight ahead when
using the towing hooks. Do not pull
from the side or at a vertical angle.
• Do not use the towing hooks to pull
a vehicle out of mud, sand or other
conditions from which the vehicle
cannot be driven out under its own
power.
• Limit the vehicle speed to 10 mph
(15 km/h) and drive less than
1 mile (1.5 km) when towing to avoid
serious damage to the automatic
transmission.
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9
Tires and Wheels ............................................................................................. 9-33Tire Care ......................................................................................................................9-33
Recommended Cold Tire Inflation Pressures ...........................................................9-33
Check tire Inflation Pressure .....................................................................................9-34
Tire Rotation ...............................................................................................................9-35
Wheel Alignment and Tire Balance ...........................................................................9-36
Tire Replacement .......................................................................................................9-36
Wheel Replacement ................................................................................................... 9-37
Tire Traction ................................................................................................................ 9-37
Tire Maintenance........................................................................................................ 9-37
Tire Sidewall Labeling ............................................................................................... 9-38
Tire Terminology and Definitions .............................................................................. 9-41
All Season Tires .......................................................................................................... 9-44
Snow Tires.................................................................................................................. 9-44
Radial-Ply Tires .......................................................................................................... 9-44
Low Aspect Ratio Tires .............................................................................................. 9-45
Fuses ................................................................................................................9-46Instrument Panel Fuse Replacement ........................................................................9-47
Engine Compartment Panel Fuse Replacement ..................................................... 9-48
Fuse/Relay Panel Description................................................................................... 9-49
Light Bulbs ....................................................................................................... 9-62Headlight, Parking Lamp, Turn Signal Lamp, Daytime Running Light (DRL)
Replacement ............................................................................................................. 9-63
Side Repeater Lamp Replacement .......................................................................... 9-63
Puddle Lamp Replacement ...................................................................................... 9-63
Rear Combination Lamp Replacement ................................................................... 9-64
High Mounted Stop Lamp Replacement ................................................................. 9-64
License Plate Lamp Replacement ............................................................................ 9-65
Interior light replacement ......................................................................................... 9-65
Appearance Care ............................................................................................ 9-67Exterior Care ...............................................................................................................9-67
Interior Care ................................................................................................................ 9-7 2
Emission Control System ................................................................................ 9-76Crankcase Emission Control System ........................................................................ 9-76
Evaporative Emission Control System Including Onboard Refueling Vapor
Recovery (ORVR) ........................................................................................................ 9-76
Exhaust Emission Control System ............................................................................. 9-77
California Perchlorate Notice ......................................................................... 9-78

9-6
Maintenance
Owner Maintenance Schedule
When you stop for fuel:

[Check the coolant level in the engine
coolant reservoir or the liquid-cooled
intercooler coolant reservoir.

[Check the windshield washer fluid
level.

[Check for low or under-inflated tires.
WARNING
Be careful when checking your coolant
level if the motor compartment is hot.
This may result in coolant being blown
out of the opening and cause serious
burns and other injuries.
While operating your vehicle:

[Note any changes in the sound of the
exhaust or any smell of exhaust fumes
in the vehicle.

[Check for vibrations in the steering
wheel. Notice if there is any increased
steering effort or looseness in the
steering wheel, or change in its
straight-ahead position.

[Notice if your vehicle constantly turns
slightly or “pulls” to one side when
traveling on smooth, level road.

[When stopping, listen and check for
unusual sounds, pulling to one side,
increased brake pedal travel or “hard-
to-push” brake pedal.

[If any slipping or changes in the
operation of your transmission occurs,
check the transmission fluid level.

[Check the automatic transmission P
(Park) function.

[Check the parking brake.

[Check for fluid leaks under your
vehicle (water dripping from the air
conditioning system during or after
use is normal).
At least monthly:

[Check coolant level in the engine
coolant reservoir.

[Check the operation of all exterior
lights, including the stoplights, turn
signals and hazard warning flashers.

[Check the inflation pressures of all
tires including the spare for tires that
are worn, show uneven wear, or are
damaged.

[Check for loose wheel lug nuts.
At least twice a year: (for example,
every Spring and Autumn)

[Check radiator, heater and air
conditioning hoses for leaks or
damage.

[Check windshield washer spray and
wiper operation. Clean wiper blades
with a clean cloth dampened with
washer fluid.

[Check headlight alignment.

[Check muffler, exhaust pipes, shields
and clamps.

[Check the seat belts for wear and
function.
At least once a year:

[Clean body and door drain holes.

[Lubricate door hinges and hood
hinges.

[Lubricate door and hood locks and
latches.

[Lubricate door rubber weather strips.

[Check the air conditioning system.

[Inspect and lubricate automatic
transmission linkage and controls.

[Clean the battery and terminals.

[Check the brake fluid level.

9-33
09
WARNING
Tire failure may cause loss of
vehicle control resulting in an
accident. To reduce risk of SERIOUS
INJURY or DEATH, take the
following precautions:

[Inspect your tires monthly for
proper inflation as well as wear
and damage.

[The recommended cold tire
pressure for your vehicle can be
found in this manual and on the
tire label located on the driver’s
side center pillar. Always use a
tire pressure gauge to measure
tire pressure. Tires with too
much or too little pressure wear
unevenly causing poor handling.

[Check the pressure of the
spare every time you check the
pressure of the other tires on
your vehicle.

[Replace tires that are worn, show
uneven wear, or are damaged.
Worn tires can cause loss of
braking effectiveness, steering
control, or traction.

[ALWAYS replace tires with the
same size, type, construction and
tread pattern as each tire that
was originally supplied with this
vehicle. Using tires and wheels
other than the recommended
sizes could cause unusual
handling characteristics, poor
vehicle control, or negatively
affect your vehicle’s Anti-Lock
Brake System (ABS) resulting in a
serious accident.
Tire Care
For proper maintenance, safety, and
maximum fuel economy, you must
always maintain recommended
tire inflation pressures and stay
within the load limits and weight
distribution recommended for your
vehicle.
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All specifications (sizes and
pressures) can be found on a label
attached to the driver’s side center
pillar.
Recommended Cold Tire
Inflation Pressures
All tire pressures (including the
spare) should be checked when the
tires are cold. “Cold tires” means the
vehicle has not been driven for at
least three hours or driven less than
one mile (1.6 km).
Warm tires normally exceed
recommended cold tire pressures
by 4 to 6 psi (28 to 41 kPa). Do not
release air from warm tires to adjust
the pressure or the tires will be
under-inflated. For recommended
inflation pressure, refer to “Tire and
Wheels” section in chapter 2.
TIRES AND WHEELS

9-34
Maintenance
WARNING
Recommended pressures must be
maintained for the best ride, vehicle
handling, and minimum tire wear.
Over-inflation or under-inflation
can reduce tire life, adversely
affect vehicle handling, and lead to
sudden tire failure that could result
in loss of vehicle control resulting in
an accident.
Severe under-inflation can lead
to severe heat build-up, causing
blowouts, tread separation and
other tire failures that can result in
the loss of vehicle control resulting
in an accident. This risk is much
higher on hot days and when
driving for long periods at high
speeds.
CAUTION

[Under-inflation results in
excessive wear, poor handling
and reduced fuel economy.
Wheel deformation is also
possible. Keep your tire pressures
at the proper levels. If a tire
frequently needs refilling, have it
checked by an authorized retailer
of Genesis Branded products.

[Over-inflation produces a harsh
ride, excessive wear at the center
of the tire tread, and a greater
possibility of damage from road
hazards.
Check tire Inflation Pressure
Check your tires, including the spare
tire(if equipped), once a month or
more.
How to check
Use a good quality tire pressure
gauge to check tire pressure. You
can not tell if your tires are properly
inflated simply by looking at them.
Radial tires may look properly
inflated when they are under-
inflated.
Remove the valve cap from the tire
valve stem. Press the tire gauge
firmly onto the valve to get a
pressure measurement. If the cold
tire inflation pressure matches the
recommended pressure on the tire
and loading information label, no
further adjustment is necessary. If
the pressure is low, add air until you
reach the recommended pressure.
Make sure to put the valve caps
back on the valve stems. Without
the valve cap, dirt or moisture could
get into the valve core and cause
air leakage. If a valve cap is missing,
install a new one as soon as possible.
If you overfill the tire, release air by
pushing on the metal stem in the
center of the tire valve. Recheck the
tire pressure with the tire gauge. Be
sure to put the valve caps back on
the valve stems. Without the valve
cap, dirt or moisture could get into
the valve core and cause air leakage.
If a valve cap is missing, install a new
one as soon as possible.

9-37
09
Compact spare tire (if equipped)
replacement
A compact spare tire has a shorter
tread life than a regular size tire.
Replace it when you can see the
tread wear indicator bars on the tire.
The replacement compact spare tire
should be the same size and design
tire as the one provided with your
new vehicle and should be mounted
on the same compact spare tire
wheel. The compact spare tire is
not designed to be mounted on a
regular size wheel, and the compact
spare tire wheel is not designed for
mounting a regular size tire.
WARNING
The original tire should be repaired
or replaced as soon as possible to
avoid failure of the compact spare
tire and loss of vehicle control
resulting in an accident. The
compact spare tire is for emergency
use only. Do not operate your
vehicle over 50 mph (80 km/h)
when using the compact spare tire.
Wheel Replacement
When replacing the metal wheels
for any reason, make sure the new
wheels are equivalent to the original
factory units in diameter, rim width
and offset.
Tire Traction
Tire traction can be reduced if you
drive on worn tires, tires that are
improperly inflated or on slippery
road surfaces. Tires should be
replaced when tread wear indicators
appear. To reduce the possibility of
losing control, slow down whenever
there is rain, snow or ice on the road.
Tire Maintenance
In addition to proper inflation,
correct wheel alignment helps to
decrease tire wear. If you find a tire
is worn unevenly, have your dealer
check the wheel alignment.
When you have new tires installed,
make sure they are balanced. This
will increase vehicle ride comfort
and tire life. Additionally, a tire
should always be rebalanced if it is
removed from the wheel.

9-39
09
Tire speed ratings
The chart below lists many of the
different speed ratings currently
being used for passenger vehicle
tires. The speed rating is part of the
tire size designation on the sidewall
of the tire. This symbol corresponds
to that tire’s designed maximum safe
operating speed.
Speed Rating
SymbolMaximum Speed
S 112 mph (180 km/h)
T 118 mph (190 km/h)
H 130 mph (210 km/h)
V 149 mph (240 km/h)
W 168 mph (270 km/h)
Y 186 mph (300 km/h)
3. Checking tire life (TIN : Tire
Identification Number)
Any tires that are over six years old,
based on the manufacturing date,
(including the spare tire) should be
replaced by new ones. You can find
the manufacturing date on the tire
sidewall (possibly on the inside of
the wheel), displaying the DOT Code.
The DOT Code is a series of numbers
on a tire consisting of numbers and
English letters. The manufacturing
date is designated by the last four
digits (characters) of the DOT code.
DOT : XXXX XXXX OOOO
The front part of the DOT shows a
plant code number, tire size and
tread pattern and the last four
numbers indicate week and year
manufactured.
For example:
DOT XXXX XXXX 1522 represents that
the tire was produced in the 15th
week of 2022.4. Genesis exclusive tire
Genesis Branded Vehicle
recommends that tires designed
specifically for Genesis vehicles
be used. You may find the marking
“GOE” (Genesis Original Equipment)
embossed on the tire sidewall.
5. Tire ply composition and material
The number of layers or plies of
rubber-coated fabric in the tire. Tire
manufacturers also must indicate the
materials in the tire, which include
steel, nylon, polyester, and others.
The letter “R” means radial ply
construction; the letter “D“ means
diagonal or bias ply construction;
and the letter “B” means belted-bias
ply construction.
6. Maximum permissible inflation
pressure
This number is the greatest amount
of air pressure that should be put in
the tire. Do not exceed the maximum
permissible inflation pressure. Refer
to the Tire and Loading Information
label for recommended inflation
pressure.
7. Maximum load rating
This number indicates the maximum
load in kilograms and pounds that
can be carried by the tire. When
replacing the tires on the vehicle,
always use a tire that has the same
load rating as the factory installed
tire.

9-41
09
WARNING
The temperature grade for this tire is
established for a tire that is properly
inflated and not overloaded.
Excessive speed, under-inflation,
over-inflation, or excessive loading,
either separately or in combination,
can cause heat build-up and
possible sudden tire failure. This
may cause loss of vehicle control
resulting in an accident.
Tire Terminology and Definitions
Air pressure
The amount of air inside the tire
pressing outward on the tire. Air
pressure is expressed in pounds per
square inch (psi) or kilopascal (kPa).
Accessory weight
This means the combined weight
of optional accessories. Some
examples of optional accessories
are automatic transmission, power
seats, and air conditioning.
Aspect ratio
The relationship of a tire’s height to
its width.
Belt
A rubber coated layer of cords that
is located between the plies and the
tread. Cords may be made from steel
or other reinforcing materials.
Bead
The tire bead contains steel wires
wrapped by steel cords that hold the
tire onto the rim.
Bias ply tire
A pneumatic tire in which the plies are
laid at alternate angles less than 90
degrees to the centerline of the tread.
Cold tire pressure
The amount of air pressure in a tire,
measured in pounds per square inch
(psi) or kilopascals (kPa) before a tire
has built up heat from driving.
Curb weight
This means the weight of a motor
vehicle with standard and optional
equipment including the maximum
capacity of fuel, oil and coolant, but
without passengers and cargo.
DOT markings
A code molded into the sidewall
of a tire signifying that the tire
is in compliance with the U.S.
Department of Transportation motor
vehicle safety standards. The DOT
code includes the Tire Identification
Number (TIN), an alphanumeric
designator which can also identify
the tire manufacturer, production
plant, brand and date of production.
GVWR
Gross Vehicle Weight Rating
GAWR FRT
Gross Axle Weight Rating for the
Front Axle.
GAWR RR
Gross Axle Weight Rating for the
Rear axle.