2023 GENESIS G90 fuel cap

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01
Your new vehicle is designed to obtain maximum performance with UNLEADED FUEL,
as well as minimize exhaust emissions and spark plug fouling.
Your new vehicle is designed to use only unleaded fuel having an octane number
((R+M)/2) of 87 (Research Octane Number 91) or higher. For improved vehicle
performance, premium unleaded fuel with an octane number ((R+M)/2) of 91
(Research Octane Number 95) or higher is recommended. (Do not use methanol
blended fuels.)
NOTICE
To prevent damage to the engine and engine components, never add any fuel
system cleaning agents to the fuel tank other than what has been specified.
Consult an authorized retailer of Genesis Branded products for additional
information.
WARNING

[Do not “top off” after the nozzle automatically shuts off when refueling.

[Always check that the fuel cap is installed securely to prevent fuel spillage in the
event of an accident.
Gasoline containing alcohol and methanol
Gasohol, a mixture of gasoline and ethanol (also known as grain alcohol) are being
marketed along with or instead of leaded or unleaded gasoline. For example, “E15” is
a gasohol comprised of 15% ethanol and 85% gasoline. Do not use gasohol containing
more than 15% ethanol, and do not use gasoline or gasohol containing any methanol.
Either of these fuels may cause drivability problems and damage to the fuel system,
engine control system and emission control system.
Discontinue using gasohol of any kind if drivability problems occur. “E85” fuel is
an alternative fuel comprised of 85 percent ethanol and 15 percent gasoline, and is
manufactured exclusively for use in Flexible Fuel Vehicles. “E85” is not compatible
with your vehicle. Use of “E85” may result in poor engine performance and damage
to your vehicle’s engine and fuel system. Genesis Branded Vehicle recommends that
customers do not use fuel with an ethanol content exceeding 15 percent.
NOTICE
To prevent damage to your vehicle’s engine and fuel system:

[Never use gasohol which contains methanol.

[Never use gasohol containing more than 15% ethanol.

[Never use leaded fuel or leaded gasohol.

[Never use “E85” fuel.
Your New Vehicle Limited Warranty does not cover damage to the fuel system or any
performance problems caused by the use of “E85” fuel.
FUEL REQUIREMENTS

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02
To help achieve proper engine and powertrain performance and durability, use only
lubricants of the proper quality. The correct lubricants also help promote engine
efficiency that results in improved fuel economy.
These lubricants and fluids are recommended for use in your vehicle.
Lubricant Volume Classification
Engine oil *1
Recommends
86TW
bSAE 0W-30, API SN PLUS/SP or
ILSAC GF-6 *4
Automatic transmission fluid86TW
bGS ATF SP-IV-RR, Genesis/
HYUNDAI genuine ATF SP-IV-
RR or other brands meeting the
above specification approved by
Genesis Customer Care
Engine coolant3.5L T-GDI86TW
b
Mixture of antifreeze and water
(Phosphate-based Ethylene
glycol coolant for aluminum
radiator) 3.5L T-GDI 48 V
MHEV86TW
b
Liquid-cooled
intercooler
coolant3.5L T-GDI86TW
b
3.5L T-GDI 48 V
MHEV86TW
b
Brake fluid
*2As required DOT-4
Front differential oil (AWD)
*30.71±0.026 US qt.
s
bHYPOID GEAR OIL API GL-5 SAE
75W/85 (SK HK SYN GEAR OIL
75W85 FM PLUS or equivalent)
Rear differential oil *31.27±0.05 US qt.
s
bHYPOID GEAR OIL API GL-5 SAE
75W/85 (SK HK SYN GEAR OIL
75W85 FM PLUS or equivalent)
Transfer case
oil (AWD)Gear/Clutch0.44±0.22 US qt.
s
b
SHELL TF0870B
Actuator0.29±0.11 US qt.
s
b
Fuel86JDO
bRefer to “Fuel requirements”
section in chapter 1.
*1 : Refer to the recommended SAE viscosity numbers on the next page.
*2 : To maintain the best braking performance and ABS/ESC performance, we recommend
that you use fluid that conform to specifications.
*3 : If the front/rear differential is submerged, visit an authorized retailer of Genesis Branded
products to replace the differential oil.
*4 : Requires grade engine oil. If a lower grade
engine oil (mineral oil including Semi-synthetic) is used, then the engine oil and engine
oil filter must be replaced as indicated severe maintenance condition.
RECOMMENDED LUBRICANTS AND CAPACITIES

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Vehicle Information, Consumer Information and Reporting Safety Defects
Recommended SAE Viscosity Number
CAUTION
Always be sure to clean the area around any filler cap, drain plug, or dipstick before
checking or draining any lubricant. This is especially important in dusty or sandy
areas and when the vehicle is used on unpaved roads. Cleaning the plug and dipstick
areas will prevent dirt and grit from entering the engine and other mechanisms that
could be damaged.
Engine oil viscosity (thickness) has an effect on fuel economy and cold weather
operating (engine start and engine oil flowability). Lower viscosity engine oils can
provide better fuel economy and cold weather performance, however, higher viscosity
engine oils are required for satisfactory lubrication in hot weather. Using oils of any
viscosity other than those recommended could result in engine damage.
When choosing an oil, consider the range of temperature your vehicle will be operated
in before the next oil change. Proceed to select the recommended oil viscosity from
the chart.
Temperature Range for SAE Viscosity Numbers
Temperature°C -30 -20 -10 0 10 20 30 40 50
(°F) -10 0 20 40 60 80 100 120
Engine Oil
0W-30 0W-30
An engine oil displaying this American Petroleum Institute(API)
Certification Mark conforms to the International Lubricant
Specification Advisory Committee (ILSAC). It is recommended
to only use engine oils that uphold this API Certification Mark.

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Fuel gauge
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This gauge indicates the approximate
amount of fuel remaining in the fuel tank.
Information
• The fuel tank capacity is given in
chapter 2.
• The fuel gauge is supplemented by
a low fuel warning light, which will
illuminate when the fuel tank is nearly
empty.
• On inclines or curves, the fuel gauge
pointer may fluctuate or the low fuel
warning light may come on earlier than
usual due to the movement of fuel in
the tank.
WARNING
Running out of fuel can expose vehicle
occupants to danger.
You must stop and obtain additional
fuel as soon as possible after the
warning light comes on or when the
gauge indicator comes close to the “E
(Empty)” level.
NOTICE
Avoid driving with an extremely low
fuel level. Running out of fuel could
cause the engine to misfire damaging
the catalytic converter.
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Low washer fluid
This message is displayed if the washer
fluid level in the reservoir is nearly empty.
Have the washer fluid reservoir refilled.
Low fuel
This message is displayed if the fuel tank
is almost out of fuel.
When this message is displayed, the low
fuel level warning light in the cluster will
come on.
It is recommended to look for the nearest
fueling station and refuel as soon as
possible.
Low engine oil (if equipped)
This warning message is displayed when
the engine oil level should be checked.
If this warning message is displayed,
check the engine oil level as soon as
possible and add engine oil as required.
Slowly pour the recommended oil little
by little into a funnel.
Use only the specified engine oil. (Refer
to "Recommended Lubricants and
Capacities“ section in chapter 2.)
Do not overfill the engine oil. Make sure
the oil level is not above F (Full) mark on
the dipstick.
Information
After adding engine oil, if you travel
approximately 31~62 miles (50~100 km)
after the engine warms up, the warning
message should disappear.
Engine overheated
This message is displayed when the
engine coolant temperature is above
248°F (120°C). This means that the
engine is overheated and may be
damaged.
If your vehicle is overheated, refer to
“Overheating” section in chapter 8.
Check haptic steering wheel system
This message is displayed if there is a
problem with the haptic steering wheel
system. Have the vehicle inspected by an
authorized retailer of Genesis Branded
products.
Check headlight (if equipped)
This message is displayed if the
headlights are not operating properly. A
lamp may need to be replaced.
Make sure to replace the burned out
bulb with a new one of the same wattage
rating.
Check turn signal (if equipped)
This message is displayed if the turn
signal lamps are not operating properly.
A lamp may need to be replaced.
Make sure to replace the burned out
bulb with a new one of the same wattage
rating.
Check headlight LED (if equipped)
This message is displayed if there is a
problem with the LED headlight. Have
the vehicle inspected by an authorized
retailer of Genesis Branded products.
004_RS4_HMA.indd 4-252022-04-06  3:02:33

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Convenience Features
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1. Turn the engine off.
2. Ensure the driver’s door is unlocked.
3. Push the fuel filler door near the 3
o’clock position.
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4. Pull the fuel filler door M outward to
access the fuel tank cap.
5. To remove the fuel tank cap N, turn
it counterclockwise. You may hear a
hissing noise as the pressure inside
the tank equalizes.
6. Place the cap on the fuel filler door.
Information
If the fuel filler door does not open
because ice has formed around it, tap
lightly or push on the door to break the
ice and release the door. Do not pry on the
door. If necessary, spray around the door
with an approved deicer fluid (do not use
radiator antifreeze) or move the vehicle to
a warm place and allow the ice to melt.
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1. To install the fuel tank cap, turn it
clockwise until it “clicks” one time.
2. Close the fuel filler door until it is
latched securely.
Information
The fuel filler door will not close if the
driver’s door is locked. If you lock the
driver’s door while fueling, unlock it
before closing the fuel filler door.
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05
WARNING
Automotive fuel is highly flammable
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guidelines may result in SERIOUS
INJURY or DEATH:

[Read and follow all warnings posted
at the gas station.

[Before refueling, note the location
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available, at the gas station.

[Before touching the fuel nozzle, you
should eliminate the potential build-
up of static electricity by touching
a metal part of the vehicle, a safe
distance away from the fuel filler
neck, nozzle, or other gas source,
with your bare hand.

[Do not use mobile phones while
refueling. Electric current and/or
electronic interference from cellular
phones can potentially ignite fuel
vapors and cause a fire.

[Do not get back into a vehicle
once you have begun refueling.
You can generate a buildup of
static electricity by touching,
rubbing or sliding against any item
or fabric capable of producing
static electricity. Static electricity
discharge can ignite fuel vapors
causing a fire. If you must re-enter
the vehicle, you should once again
eliminate potentially dangerous
static electricity discharge by
touching a metal part of the vehicle,
away from the fuel filler neck, nozzle
or other fuel source, with your bare
hand.
[When using an approved portable
fuel container, be sure to place the
container on the ground prior to
refueling. Static electricity discharge
from the container can ignite fuel
vapors causing a fire.
Once refueling has begun, contact
between your bare hand and the
vehicle should be maintained until
the filling is complete.

[Use only approved portable plastic
fuel containers designed to carry and
store fuel.

[When refueling, always shift the
gear to the P (Park) position, set
the parking brake, and press the
Engine Start/Stop button to the
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electrical components related to the
engine can ignite fuel vapors causing
a fire.

[Do not use matches or a lighter and
do not smoke or leave a lit cigarette
in your vehicle while at a gas station,
especially during refueling.

[Do not over-fill or top-off your
vehicle tank, which can cause fuel
spillage.

[If a fire breaks out during refueling,
leave the vicinity of the vehicle, and
immediately contact the manager
of the gas station and then contact
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safety instructions they provide.

[If pressurized fuel sprays out, it can
cover your clothes or skin and thus
subject you to the risk of fire and
burns. Always remove the fuel cap
carefully and slowly. If the cap is
venting fuel or if you hear a hissing
sound, wait until the condition stops
before completely removing the cap.

[Always check that the fuel cap is
installed securely to prevent fuel
spillage in the event of an accident.

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Convenience Features
Information
Make sure to refuel your vehicle according
to the “Fuel Requirements” section in
suggested in chapter 1.
NOTICE

[Do not spill fuel on the exterior
surfaces of the vehicle. Any type of
fuel spilled on painted surfaces may
damage the paint.

[If the fuel filler cap requires
replacement, use only a genuine
Genesis cap or the equivalent (of
the genuine part) specified for your
vehicle. An incorrect fuel filler cap
can result in a serious malfunction of
the fuel system or emission control
system.