2021 GENESIS G90 oil

7-22
Maintenance
Checking the Engine Oil Level
1. Follow all of the oil manufacturer’s
precautions.
2. Be sure the vehicle is on the level
ground in P (Park) with the parking
brake set. If possible, block the
wheels.
3. Turn the engine on and allow the
engine to reach normal operating
temperature.
4. Turn the engine off and wait about
five minutes for the oil to return to
the oil pan.
5. Pull the dipstick out, wipe it clean,
and re-insert it fully.
6. Pull the dipstick out again and
check the level. The level should
be between F and L.7. If it is near or at L, add enough oil
to bring the level to F.
Use only the specified engine oil
(refer to "Recommended
Lubricants and Capacities" in
chapter 8).
To prevent damage to your
engine:
• Do not overfill with engine oil.
Add oil in small quantities and
recheck level to ensure engine
is not overfilled.
• Do not spill engine oil when
adding or changing engine oil.
Use a funnel to help prevent oil
from being spilled on engine
components. Wipe off spilled oil
immediately.
NOTICE
ENGINE OIL
OHI078004
■3.3 T-GDI
OHI078006
■5.0 GDI
OHI078007
■3.3 T-GDI
OHI078009
■5.0 GDI

7-23
07
CALIFORNIA PROPOSITION 65 WARNING
Engine oil contains chemicals known to the State of California to
cause cancer, birth defects and reproductive harm. Used engine oil
may cause irritation or cancer of the skin if left in contact with the skin
for prolonged periods of time. Always protect your skin by washing
your hands thoroughly with soap and warm water as soon as possi-
ble after handling used oil.
WARNING
Checking the Engine Oil and Filter
Have engine oil and filter changed by an authorized retailer of Genesis
Branded products according to the Maintenance Schedule at the beginning of
this chapter.

7-27
07
Checking the Brake Fluid
Level
Check the fluid level in the reservoir
periodically. The fluid level should be
between MAX and MIN marks on the
side of the reservoir.
Before removing the reservoir cap
and adding brake fluid, clean the
area around the reservoir cap thor-
oughly to prevent brake fluid contam-
ination.
If the level is low, add the specified
brake fluid to the MAX level. The level
will fall with accumulated mileage.
This is a normal condition associated
with the wear of the brake linings. If
the fluid level is excessively low, have
the brake system checked by an
authorized retailer of Genesis
Branded products.• Do not allow brake fluid to con-
tact the vehicle's body paint, as
paint damage will result.
• Brake fluid, which has been
exposed to open air for an
extended time should NEVER be
used as its quality cannot be
guaranteed. It should be dis-
posed of properly.
• Do not use the wrong kind of
brake fluid. A few drops of min-
eral based oil, such as engine
oil, in your brake system can
damage brake system parts.
Information
Use only the specified brake fluid
(refer to "Recommended Lubricants
and Capacities" in chapter 8).
i
NOTICE
BRAKE FLUID
If the brake system requires fre-
quent additions of fluid this
could indicate a leak in the
brake system. Have the vehicle
inspected by an authorized
retailer of Genesis Branded
products.
WARNING
Do not allow brake fluid to come
in contact with your eyes. If
brake fluid comes in contact
with your eyes, flush your eyes
with clean water for at least 15
minutes and get immediate
medical attention.
WARNING
OHI078016

7-29
07
Filter Replacement
Do not attempt to wash or to rinse it,
as water will damage the filter.
If soiled, the air cleaner filter must be
replaced.
Visit an authorized retailer of
Genesis Branded products to
replace the air cleaner filter.
Replace the filter according to the
Maintenance Schedule
Information
If the vehicle is operated in extremely
dusty or sandy areas, replace the air
cleaner filter more often than the
usual recommended intervals (refer to
"Maintenance Under Severe Usage
Conditions" in this chapter).• Do not drive with the air cleaner
filter removed. This will result in
excessive engine wear.
• When removing the air cleaner
filter, be careful that dust or dirt
does not enter the air intake, or
damage may result.
• Use Genuine Genesis Part, use
of non-Genuine Genesis Part
could damage the engine.
NOTICE
i
AIR CLEANER
OHI078018

7-35
07
Battery Recharging
By battery charger
Your vehicle has a maintenance-free,
calcium-based battery.
• If the battery becomes discharged
in a short time (because, for exam-
ple, the headlights or interior lights
were left on while the vehicle was
not in use), recharge it by slow
charging (trickle) for 10 hours.
• If the battery gradually discharges
because of high electric load while
the vehicle is being used, recharge
it at 20-30A for two hours.
AGM battery
• Absorbent Glass Matt (AGM)
batteries are maintenance-free
and we recommend that the
AGM battery be serviced by an
authorized retailer of Genesis
Branded products. For charging
your AGM battery, use only fully
automatic battery chargers that
are specially developed for AGM
batteries.
• When replacing the AGM bat-
tery, we recommend that you
use parts for replacement from
an authorized retailer of Genesis
Branded products.
• Do not open or remove the cap
on top of the battery. This may
cause leaks of internal elec-
trolyte that could result in
severe injury.
NOTICE
Always follow these instruc-
tions when recharging your
vehicle's battery to avoid the
risk of SERIOUS INJURY or
DEATH from explosions or acid
burns:
• Before performing mainte-
nance or recharging the bat-
tery, turn off all accessories
and press the Engine Start/
Stop button to the OFF posi-
tion.
• Keep all flames, sparks, or
smoking materials away from
the battery.
• Always work outdoors or in an
area with plenty of ventilation.
• Wear eye protection when
checking the battery during
charging.
• The battery must be removed
from the vehicle and placed in
a well ventilated area.
• Watch the battery during
charging, and stop or reduce
the charging rate if the battery
cells begin boiling violently.
WARNING

7-47
07
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 com-
pliance 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 manufactur-
er, 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.
Intended Outboard Sidewall
The side of an asymmetrical tire, that
must always face outward when
mounted on a vehicle.
Kilopascal (kPa)
The metric unit for air pressure.
Light truck(LT) tire
A tire designated by its manufacturer
as primarily intended for use on light-
weight trucks or multipurpose pas-
senger vehicles.
Load ratings
The maximum load that a tire is rated
to carry for a given inflation pressure.
Load Index
An assigned number ranging from 1
to 279 that corresponds to the load
carrying capacity of a tire.
Maximum Inflation Pressure
The maximum air pressure to which
a cold tire may be inflated. The max-
imum air pressure is molded onto the
sidewall.
Maximum Load Rating
The load rating for a tire at the maxi-
mum permissible inflation pressure
for that tire.

7-52
Maintenance
A vehicle's electrical system is pro-
tected from electrical overload dam-
age by fuses.
This vehicle has 4 fuse panels, one
located in the driver's side panel bol-
ster, another in the engine compart-
ment, and two others in the trunk
compartment.
If any of your vehicle's lights, acces-
sories, or controls do not work, check
the appropriate circuit fuse. If a fuse
has blown, the element inside the
fuse will be melted or broken.If the electrical system does not
work, first check the driver's side
fuse panel. Before replacing a blown
fuse, turn the engine and all switches
off, and then disconnect the negative
battery cable. Always replace a
blown fuse with one of the same rat-
ing.
If the replacement fuse blows, this
indicates an electrical problem. Avoid
using the system involved and imme-
diately consult an authorized retailer
of Genesis Branded products.
Information
Four kinds of fuses are used: blade
type for lower amperage rating, car-
tridge type, multi fuse and fusible link
for higher amperage ratings.
Do not use a screwdriver or any
other metal object to remove
fuses because it may cause a
short circuit and damage the sys-
tem.
NOTICE
i
FUSES
Normal Normal ■Blade type
■Cartridge typeBlown
Blown
■Fusible link
NormalBlown
OCK077071
NEVER replace a fuse with any-
thing but another fuse of the
same rating.
• A higher capacity fuse could
cause damage and possibly
cause a fire.
• Do not install a wire or alu-
minum foil instead of the
proper fuse - even as a tempo-
rary repair. It may cause
extensive wiring damage and
possibly a fire.
WARNING
■Multi fuse
NormalBlown

7-63
07
Fuse name Fuse rating Circuit protected
SENSOR110A
[3.3 T-GDI] Oil Controlvalve #1/#2/#3/#4 (Intake/Exhaust),
Purge Control Solenoid Valve, Oil Pressure
Solenoid Valve, Canister Close Valve
[5.0 GDI] Oil Controlvalve #1/#2/#3/#4 (Intake/ Exhaust),
Purge Control Solenoid Valve, Canister Close
Valve
SENSOR310ARear Sub Junction Block (Fuel Pump Relay)
SENSOR410A[5.0 GDI] Camshaft Position Sensor #1/#2/#3/#4 (Intake/
Exhaust)
IGN COIL15A[3.3 T-GDI] Ignition Coil #1/#2/#3/#4/#5/#6
[5.0 GDI] Ignition Coil #1/#2/#3/#4/#5/#6/#7/#8
ECU420AECM
ECU520AECM
A/C210AA/Con Comp Relay
POWER
OUTLET4 20APower Outlet #2 Relay
A/C110AA/C Control Module
BLOWER FRT40AFront Blower Relay
IG140AIG1 Relay
START30AEngine Room Junction Block (Start Relay)
ECU115AECM
TCU120ATCM
ESC310AESC Control Module