2021 GENESIS G90 engine

Emergency Precautions
Tires
When replacing the tires, be sure to
equip all four tires with the same
size, type, tread, brand and load-car-
rying capacity.
In an emergency situation, a com-
pact spare tire may be used. But, do
not use the compact spare tire con-
tinuously. Repair or replace the origi-
nal tire as soon as possible to avoid
failure of the differential or AWD sys-
tem.
Tire size mismatch. Check all tire
sizes.
If your vehicle is equipped with differ-
ent tires (size, type, etc.) on the front
and rear, the message will appear. To
use the AWD system, equip the vehi-
cle with the same tires on the front
and rear.
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Driving your vehicle
Do not use tire and wheel with
different size and type from the
one originally installed on your
vehicle. It can affect the safety
and performance of your vehi-
cle, which could lead to steering
failure or rollover causing seri-
ous injury.
WARNING
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Never start or run the engine
while an AWD vehicle is raised
on a jack. The vehicle can slip or
roll off of a jack causing serious
injury or death to you or those
nearby.
WARNING
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Towing
AWD vehicles must be towed with all
wheels off the ground, either on a
flatbed tow truck or using doilies.
For more details, refer to "Towing"
in chapter 6.
Vehicle inspection
• If the vehicle needs to be operated
on a vehicle lift do not attempt to
stop any of the four wheels for turn-
ing. This could damage the sys-
tem.
• Never engage the parking brake
while running the engine on a car
lift. This may damage the AWD
system.
Dynamometer testing
An AWD vehicle must be tested on a
special four wheel chassis dynamome-
ter.
An AWD vehicle should not be tested
on a 2WD roll tester. If a 2WD roll
tester must be used, perform the fol-
lowing procedure:
1. Check the tire pressures recom-
mended for your vehicle.
2. Place the rear wheels on the roll
tester for a speedometer test as
shown in the illustration.
3. Release the parking brake.
4. Place the front wheels on the tem-
porary free roller as shown in the
illustration.
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05
OHI058031Roll Tester (Speedometer)
Temporary Free Roller
Keep away from the front of the
vehicle while the vehicle is in
gear on the dynamometer. The
vehicle can jump forward and
cause serious injury or death.
WARNING

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05
DRIVE MODE INTEGRATED CONTROL SYSTEM
Drive Mode
The drive mode may be selected
according to the driver's preference
or road condition.
The mode changes whenever the
DRIVE MODE button is pressed.
• COMFORT mode :
COMFORT mode provides smooth
driving and comfortable riding.
• SPORT mode :
SPORT mode provides sporty but
firm riding.
• ECO mode :
ECO mode helps improve fuel effi-
ciency for eco-friendly driving.
• CUSTOM mode :
The driver can separately adjust
modes of each driving system.
COMFORT mode
When COMFORT mode
is selected by pressing
the DRIVE MODE button,
the COMFORT indicator
will illuminate on the
instrument cluster.
SPORT
When SPORT mode is
selected by pressing the
DRIVE MODE button, the
SPORT indicator will illu-
minate on the instrument
cluster.
• Whenever the engine is restarted,
the drive mode will revert back to
COMFORT mode. If SPORT mode
is desired, re-select SPORT mode.
• When SPORT mode is activated:
- The engine rpm will tend to
remain raised over a certain
length of time even after releas-
ing the accelerator
- Upshifts are delayed when accel-
erating
- Seat bolsters are active (if
equipped)
Information
In SPORT mode, the fuel efficiency
may decrease.
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Driving your vehicle
ECO mode
When ECO mode is
selected by pressing the
DRIVE MODE button, the
ECO indicator will illumi-
nate on the instrument
cluster.
• If the vehicle is set to ECO mode,
when the engine is turned OFF
and restarted the drive mode set-
ting will remain in ECO mode.
Information
Fuel efficiency depends on the driver's
driving habit and road condition.
When ECO mode is activated:
• The acceleration response may be
slightly reduced if the accelerator
pedal is depressed moderately.
• The air conditioner performance
may be limited.
• The shift pattern of the automatic
transmission may change.
• The engine noise may be louder at
some automatic transmission
shifts as down-shift requires press-
ing down more on the accelerator.
The above situations are normal
conditions when ECO mode is acti-
vated to help improve fuel efficiency.
Limitation of ECO mode operation:
If the following conditions occur while
ECO mode is operating, the system
operation is limited even though
there is no change in the ECO indi-
cator.
• When the coolant temperature is
low:
The system will be limited until
engine performance becomes nor-
mal.
• When driving up a hill:
The system will be limited to gain
power when driving uphill because
engine torque is restricted.
• When driving the vehicle in manual
shift mode using the paddle shifter.
The system will be limited accord-
ing to the shift location.
CUSTOM mode
When CUSTOM mode is
selected by pressing the
DRIVE MODE button, the
CUSTOM mode indicator
will illuminate on the
instrument cluster.
• In CUSTOM mode, the driver can
select separate modes and combine
them in the AVN system screen.
- Engine/Transmission: ECO/
COMFORT/SPORT/SMART
/Comfort(rear)
- Steering wheel: COMFORT/
SPORT/Comfort(rear)
- Suspension:
COMFORT/SPORT/Comfort(rear)
- AWD system: ECO/COMFORT/
SPORT
For detailed information, scan the
QR code in a separately supplied
simple manual.
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05
When SMART is selected for CUS-
TOM mode
SMART mode automatically controls
the vehicle driving, such as gear
shifting patterns, engine torque, rid-
ing quality (if equipped with the elec-
tronic suspension system), and
power distribution (if equipped with
the All-Wheel Drive system), in
accordance with the driver's driving
habits.
Information
• When you mildly drive the vehicle
in SMART mode, the driving mode
changes to ECO mode to improve
fuel efficiency. However, the actual
fuel efficiency may differ in accor-
dance with your driving situations
(i.e. upward/downward slope, vehi-
cle deceleration/acceleration).
• When you dynamically drive the
vehicle in SMART mode by abrupt-
ly decelerating or sharply turning
the driving mode changes to SPORT
mode. However, it may adversely
affect fuel economy.
• Various driving situations, which
you may encounter in SMART
mode
- The driving mode automatically
changes to ECO mode after a
certain period of time, when you
gently depress the accelerator
pedal (Your driving is categorized
to be economic.).
- The driving mode automatically
changes from SMART ECO
mode to SMART COMFORT
mode after a certain period of
time, when you sharply or repeti-
tively depress the accelerator
pedal.- The driving mode automatically
changes to SMART COMFORT
mode with the same driving pat-
terns, when the vehicle starts to
drive on an upward slope of a
certain angle. The driving mode
automatically returns to SMART
ECO mode, when the vehicle
enters a leveled road.
- The driving mode automatically
changes to SMART SPORT,
when you abruptly accelerate the
vehicle or repetitively operate the
steering wheel (Your driving is
categorized to be sporty.). In this
mode, your vehicle drives in a
lower gear for abrupt accelerat-
ing/decelerating and increases
the engine brake performance.
- You may still sense the engine
braking performance, even when
you release the accelerator pedal
in SMART SPORT mode. It is
because your vehicle remains in
lower gear over a certain period
of time for next acceleration.
Thus, it is a normal driving situa-
tion, not indicating any malfunc-
tion.
- The driving mode automatically
changes to SMART SPORT
mode only in harsh driving situa-
tions. In most of the normal driv-
ing situations, the driving mode
sets to be either in SMART ECO
mode or in SMART COMFORT
mode.
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Driving your vehicle
• Limitation of SMART mode
The SMART mode may be limited
in following situations. (The OFF
indicator illuminates in those situa-
tions.)
- The driver manually moves the
shift lever :
It deactivates SMART mode. The
vehicle drives, as the driver man-
ually moves the shift lever.
- The cruise control is activated :
The cruise control system may
deactivate the SMART mode
when the vehicle is controlled by
the set speed of the smart cruise
control system. (SMART mode is
not deactivated just by activating
the cruise control system.)
- The transmission oil temperature
is either extremely low or
extremely high :
The SMART mode can be active
in most of the normal driving situ-
ations. However, an extremely
high/ low transmission oil temper-
ature may temporarily deactivate
the SMART mode, because the
transmission condition is out of
normal operation condition.
When Comfort(rear) is selected for
CUSTOM mode
The Comfort (rear) mode is a mode
that adjusts to minimize the discom-
fort of the rear passengers by provid-
ing a smooth and stable ride through
the adjustment of the suspension,
engine/transmission, and steering.
• To use Comfort(rear) mode, select
[Settings →Vehicle →Drive mode
→CUSTOM →POWER
TRAIN/STEERING/SUSPENSION
MODE →COMFORT] menu on
the navigation screen.

When certain conditions are met, the
engine is automatically decoupled
from the transmission while the shift
lever is remained in D (Drive). In this
Coasting mode, the engine stays at
idling speed to reduce fuel consump-
tion and increase coasting distance.
Coasting Setting
The Coasting function must be
turned ON from the Settings menu in
the AVN system screen. Select:
- Setup →Vehicle Settings →Drive
Mode →Coasting
For detailed information, scan the
QR code in a separately supplied
simple manual.
When Coasting is turned ON and the
conditions are met, the function
operates with a "Coasting" message
illuminated at the top center of the
instrument cluster.
• If the accelerator pedal is
pressed quickly for accelerating
with the Coasting function in
operation, acceleration may
occur after the engagement of
the clutch inside the transmis-
sion. In turn, the driver may con-
tinue to feel acceleration even
after the system is turned off.
• Driving with the Coasting func-
tion off may be required in some
cases since the engine brake is
not applied while the Coasting
function is in operation.
• Operating the AVN system
screen to activate or deactivate
the Coasting function while driv-
ing may be dangerous as the dri-
ver's attention is dispersed.
Coasting Operating
Conditions
The Coasting function will operate
when the accelerator pedal is
depressed and released under the
following conditions.
• The driving mode is ECO mode.
• SMART is selected for Engine/
Transmission in CUSTOM mode
from the AVN system screen and
driver acceleration is SMART ECO
• ECO is selected for Engine/
Transmission in CUSTOM mode
from the AVN system screen
• The shift lever is in D (Drive)
• The Smart Cruise Control button is
OFF
• The accelerator or brake pedal is
not depressed
• The vehicle's speed is within
35–100 mph (55–160 km/h) range
• The road gradient is within -5~+5%
range
• In SMART mode, if the distance
between the vehicle ahead and the
relative speed is within a certain
range
Information
• If the front radar for smart cruise
control system cannot operate nor-
mally, the inter-vehicle distance and
relative speed condition are auto-
matically ignored.
• The Coasting function works after
the engine is turned on, the trans-
mission is warmed up, and the
engine sensor self-diagnosis is com-
pleted after starting.
• Depending on the driving situation,
Coasting operation may be tem-
porarily delayed even if the above
conditions are met.
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NOTICE
COASTING (IF EQUIPPED)
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05

Coasting Release Conditions
The Coasting function will be auto-
matically released when the follow-
ing conditions are met.
• The driving mode is COMFORT or
SPORT mode.
• SMART is selected for Engine/
Transmission in CUSTOM mode
from the AVN system screen and
driver acceleration is SMART
COMFORT or SMART SPORT
• The Smart Cruise Control button is
ON (the cruise indicator is ON)
• The vehicle's speed exceeds
35–100 mph (55–160 km/h) range
• The road gradient is under -5% or
over +5%
• If the distance between the vehicle
ahead is too close or the relative
speed changes momentarily in
SMART mode.
• If lane change is predicated in
SMART mode (e.g. the turn signal
is turned ON or a LKA warning
appears due to steering wheel
control, etc.)
Information
It is recommended to turn off the
Coasting function if you are driving
under frequently stop-and-go condi-
tion. Change the Drive Mode to COM-
FORT or SPORT mode or deselect
Coasting from the AVN system screen.
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