2021 GENESIS G90 engine

7-75
07
• Do not use strong soap, chemi-
cal detergents or hot water, and
do not wash the vehicle in direct
sunlight or when the body of the
vehicle is warm.
• Be careful when washing the
side windows of your vehicle.
Especially, with high-pressure
water, water may leak through
the windows and wet the interior.
• To prevent damage to the plastic
parts, do not clean with chemi-
cal solvents or strong deter-
gents.
• Water washing in the engine
compartment including high
pressure water washing may
cause the failure of electrical cir-
cuits located in the engine com-
partment.
• Never allow water or other liq-
uids to come in contact with
electrical/electronic compo-
nents inside the vehicle as this
may damage them.Matte paint finish vehicle
(if equipped)
Automatic car wash which uses
rotating brushes should not be
used as this can damage the sur-
face of your vehicle. A steam
cleaner which washes the vehicle
surface at high temperature may
result the oil to adhere and leave
stains that is difficult to remove.
Use a soft cloth (e.g. microfiber
towel or sponge) when washing
your vehicle and dry with a
microfiber towel. When you hand
wash your vehicle, you should not
use a cleaner that finishes with
wax. If the vehicle surface is too
dirty (sand, dirt, dust, contami-
nant, etc.), clean the surface with
water before washing the car.
Waxing
A good coat of wax provides a barri-
er between your paint and environ-
mental contamination.
Keeping a good coat of wax on your
vehicle will help protect it.
Wax the vehicle when water will no
longer bead on the paint.
Always wash and dry the vehicle
before waxing. Use a good quality
liquid or paste wax, and follow the
manufacturer’s instructions. Wax all
metal trim to protect it and to main-
tain its luster.
Removing oil, tar, and similar materi-
als with a spot remover will usually
strip the wax from the finish. Be sure
to re-wax these areas even if the rest
of the vehicle does not yet need wax-
ing.
NOTICE
NOTICE
NOTICE
OHI079049N

7-84
Maintenance
The emission control system of your
vehicle is covered by a written limited
warranty. Please see the warranty
information contained in the Owner’s
Handbook & Warranty Information
booklet in your vehicle.
Your vehicle is equipped with an
emission control system to meet all
applicable emission regulations.
There are three emission control
systems, as follows.
(1) Crankcase emission control sys-
tem
(2) Evaporative emission control sys-
tem
(3) Exhaust emission control system
In order to ensure the proper function
of the emission control systems, it is
recommended that you have your
vehicle inspected and maintained by
an authorized retailer of Genesis
Branded products in accordance
with the maintenance schedule in
this manual.
For the Inspection and Maintenance
Test (
with Electronic Stability Control
system)
• To prevent the vehicle from mis-
firing during dynamometer test-
ing, turn the Electronic Stability
Control system off by pressing
the ESC switch (ESC OFF light
illuminated).
• After dynamometer testing is
completed, turn the ESC system
back on by pressing the ESC
switch again.
1. Crankcase Emission Control
System
The positive crankcase ventilation
system is employed to prevent air
pollution caused by blow-by gases
being emitted from the crankcase.
This system supplies fresh filtered air
to the crankcase through the air
intake hose. Inside the crankcase,
the fresh air mixes with blow-by
gases, which then pass through the
PCV valve into the induction system.
2. Evaporative Emission Control
System Including Onboard
Refueling Vapor Recovery
(ORVR)
The Evaporative Emission Control
System is designed to prevent fuel
vapors from escaping into the atmos-
phere. The ORVR system is
designed to allow the vapors from
the fuel tank to be loaded into a can-
ister while refueling at the gas sta-
tion, preventing the escape of fuel
vapors into the atmosphere.
Canister
Fuel vapors generated inside the fuel
tank are absorbed and stored in the
onboard canister. When the engine is
running, the fuel vapors absorbed in
the canister are drawn into the surge
tank through the purge control sole-
noid valve.
NOTICE
EMISSION CONTROL SYSTEM

7-85
07
Purge Control Solenoid Valve
(PCSV)
The purge control solenoid valve is
controlled by the Engine Control
Module; when the engine coolant
temperature is low during idling, the
PCSV closes so that evaporated fuel
is not taken into the engine. After the
engine warms-up during ordinary
driving, the PCSV opens to introduce
evaporated fuel to the engine.
3. Exhaust Emission Control
System
The Exhaust Emission Control
System is a highly effective system
which controls exhaust emissions
while maintaining good vehicle per-
formance.
When the engine starts or fails to
start, excessive attempts to restart
the engine may cause damage to the
emission system.
Engine exhaust (carbon monox-
ide) precautions
• Carbon monoxide can be present
with other exhaust fumes. If you
smell exhaust fumes of any kind in
your vehicle, drive with all the win-
dows fully open. Have your vehicle
checked and repaired immediately.• Do not operate the engine in con-
fined or closed areas (such as
garages) any more than what is
necessary to move the vehicle in or
out of the area.
• When the vehicle is stopped in an
open area for more than a short
time with the engine running,
adjust the ventilation system (as
needed) to draw outside air into the
vehicle.
• Never sit in a parked or stopped
vehicle for any extended time with
the engine running.
• When the engine stalls or fails to
start, excessive attempts to restart
the engine may cause damage to
the emission control system. Engine exhaust gases contain
carbon monoxide (CO). Though
colorless and odorless, it is
dangerous and could be lethal if
inhaled. Follow the instructions
on this page to avoid CO poi-
soning.
WARNING
CALIFORNIA PROPOSITION 65
WARNING
Engine exhaust and a wide vari-
ety of automobile components
and parts, including compo-
nents found in the interior fur-
nishings in a vehicle, contain or
emit chemicals known to the
State of California to cause can-
cer and birth defects and repro-
ductive harm. In addition, cer-
tain fluids contained in vehicles
and certain products of compo-
nent wear contain or emit chem-
icals known to the State of
California to cause cancer and
birth defects or other reproduc-
tive harm.
WARNING

7-86
Maintenance
Operating precautions for cat-
alytic converters (if equipped)Your vehicle is equipped with a cat-
alytic converter emission control
device. To prevent damage to the
catalytic converter and to your vehi-
cle, take the following precautions:
• Use only UNLEADED FUEL for
gasoline engines.
• Do not operate the vehicle when
there are signs of engine malfunc-
tion, such as misfire or a noticeable
loss of performance.
• Do not misuse or abuse the
engine. Examples of misuse are
coasting with the engine off and
descending steep grades in gear
with the engine off.
• Do not operate the engine at high
idle speed for extended periods (5
minutes or more).
• Do not modify or tamper with any
part of the engine or emission con-
trol system. All inspections and
adjustments must be made by an
authorized retailer of Genesis
Branded products.
• Avoid driving with extremely low
fuel level. If you run out of gasoline,
it could cause the engine to misfire
and result in excessive loading of
the catalytic converter. The exhaust system and cat-
alytic converter are very hot
during and immediately after
the engine has been running. To
avoid SERIOUS INJURY or
DEATH:
• Do not park, idle, or drive the
vehicle over or near flamma-
ble objects, such as grass,
vegetation, paper, leaves, etc.
A hot exhaust system can
ignite flammable items under
your vehicle.
• Keep away from the exhaust
system and catalytic convert-
er or you may get burned.
Also, Do not remove the heat
sink around the exhaust sys-
tem, do not seal the bottom of
the vehicle, and do not coat
the vehicle for corrosion con-
trol. It may present a fire risk
under certain conditions.
WARNING

8
8. Specifications,
Consumer information and
Reporting safety defects
Dimensions ....................................8-2
Engine ............................................8-2
Bulb Wattage ................................8-3
Tires and Wheels ..........................8-4
Luggage Volume ..........................8-5
Gross Vehicle Weight....................8-5
Air Conditioning System ..............8-5
Recommended Lubricants and
Capacities......................................8-6
Recommended SAE Viscosity
Number ............................................8-7
Vehicle Identification Number
(VIN) ..............................................8-8
Vehicle Certification Label ..........8-8
Tire Specification and Pressure
Label ..............................................8-8
Engine Number ............................8-9
Consumer Information................8-10
Reporting Safety Defects ............8-11

DIMENSIONS
8-2
Specifications, Consumer information and Reporting safety defects
Itemsin (mm)
Overall length204.9 (5,205)
Overall width75.4 (1,915)
Overall height58.9 (1,495)
Front tread245/45 R1964.6 (1,640)
Rear tread 275/40 R1964.5 (1,639)
Wheelbase124.4 (3,160)
Items 3.3 T-GDI5.0 GDI
Displacement
cu. in (cc)203.94 (3,342)307.43 (5,038)
Bore x Stroke
in. (mm)3.62x3.29 (92x84)3.77x3.42 (96x87)
Firing order1-2-3-4-5-61-2-7-8-4-5-6-3
No. of cylinders6, V-type8, V-type
ENGINE

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.
RECOMMENDED LUBRICANTS AND CAPACITIES
8-6
Specifications, Consumer information and Reporting safety defects
Lubricant Volume Classification
Engine oil *
1*2
(drain and refill)
3.3 T-GDI7.29 US qt. (6.9 l)ACEA A5 or above *3/
5W-30 (SAE Viscosity Number)
5.0
GDI2WD8.45 US qt. (8.0 l)API SM & ILSAC GF-4 or
above *4/
5W-20 (SAE Viscosity Number)AWD9.72 US qt. (9.2 l)
Automatic
transmission fluid9.72 US qt. (9.2 l)GS ATF SP-IV-RR, Genesis/
Hyundai ATF SP-IV-RR or other
brands meeting the above
specification approved by
Genesis Customer Care
Engine coolant3.3 T-GDI10.36 US qt. (9.8l)
Mixture of antifreeze and water
(Ethylene glycol based coolant
for aluminum radiator)
5.0
GDI2WD12.68 US qt. (12.0 l)
AWD12.05 US qt. (11.4l)
Brake fluid0.74~0.85 US qt.
(0.7~0.8 l)FMVSS116 DOT-4
Front differential oil (AWD) *
50.74 US qt. (0.7 l)Hypoid gear oil MS517-15GT
75W/85 (GL-5)
(SK HK SYN GEAR OIL
75W/85 or equivalent) Rear differential oil *
51.48 US qt. (1.4 l)
Transfer case oil (AWD)0.66 US qt. (0.62 l)SHELL TF0870B
Fuel21.9 US gal. (83 l)Refer to “Fuel Requirements” in
the Introduction chapter.
*1: Refer to the recommended SAE viscosity numbers on the next page.
*2: Engine oils labeled Energy Conserving Oil are now available. Along with other
additional benefits, they contribute to fuel economy by reducing the amount of fuel
necessary to overcome engine friction. Often, these improvements are difficult to
measure in everyday driving, but in a year’s time, they can offer significant cost and
energy savings.
*
3: If the ACEA A5 engine oil is not available in your country, you are able to use API
SM & ILSAC GF4 (or above) or ACEA A3.
*
4: If the API SM & ILSAC GF-4 engine oil is not available in your country, you are able
to use API SL & ILSAC GF-3.
*
5: If the front/rear differential is submerged, we recommend that you visit an author-
ized retailer of Genesis Branded products to replace differential oil.

8-7
08
Recommended SAE Viscosity Number
Always be sure to clean the area around any filler plug, 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 weath-
er operating (engine start and engine oil flowability). Lower viscosity engine
oils can provide better fuel economy and cold weather performance, howev-
er, 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 temper-
ature your vehicle will be operated in before the next oil change. Proceed to
select the recommended oil viscosity from the chart.
NOTICE
*1: For better fuel economy, it is recommended to use the engine oil of a viscosity
grade SAE 5W-30 (ACEA A5). However, if the engine oil is not available in your
country, select the proper engine oil using the engine oil viscosity chart.
*
2: For better fuel economy, it is recommended to use the engine oil of a viscosity
grade SAE 5W-20 (API SM / ILSAC GF-4
(or above)). However, if the engine oil is not available in your country, select the
proper engine oil using the engine oil viscosity chart.
Temperature Range for SAE Viscosity Numbers
Temperature -30 -20 -10 0 10 20 30 40 50
-10 0 20 40 60 80 100 120
Engine
Oil
3.3 Turbo-
GDI
*1
5.0 GDI *2
°C
(°F)
5W-30
10W-30
10W-30
5W-20, 5W-30
An engine oil displaying this 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.