2021 GENESIS G80 fuel

05
5-73
Fuel Filler Door
Opening the fuel filler door
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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 (1) outward to
access the fuel tank cap.
5. To remove the fuel tank cap (2), 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.
Closing the fuel filler door
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.

Convenient Features
5 -74
WARNING
Gasoline is highly flammable and
explosive. Failure to follow these
guidelines may result in SERIOUS
INJURY or DEATH:
• Read and follow all warnings posted
at the gas station.
• Before refueling, note the location of
the Emergency Gasoline Shut-Off, if
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 go back into the 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 Gasoline 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 Gasoline.
• When refueling, always shift the
gear to the P (Park) position, set
the parking brake, and press the
Engine Start/Stop button to the
OFF position. Sparks produced by
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
Gasoline 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
the local fire department. Follow any
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.

05
5-75
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
specified for your vehicle. An
incorrect fuel filler cap can result
in a serious malfunction of the fuel
system or emission control system.

Driving Your Vehicle
6-14
D (Drive)
This is the normal driving position.
The transmission will automatically shift
through an 8-gear sequence, providing
the best fuel economy and power.
For extra power when passing another
vehicle or driving uphill, depress the
accelerator pedal further until you feel
the transmission downshift to a lower
gear.
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To shift the gear to D (Drive), rotate the
shift dial clockwise while depressing the
brake pedal.
When the vehicle is stopped in the D
(Drive) position, if you open the driver's
door with the seat belt unfastened, the
gear will automatically shift to P (Park).
However, if the vehicle is in motion, the
gear may not automatically shift to P
(Park) to prevent automatic transmission
damage.
NOTICE
Always come to a complete stop before
shifting into D (Drive).
CAUTION
When you start after stopping on a
steep incline, even if the gear is in
D (Drive), if you do not depress the
accelerator or brake pedal, the vehicle
may roll backwards, which can cause an
accident.
When the battery is discharged
You cannot shift gears, when the battery
is discharged.
In emergencies, do the following to shift
the gear to N (Neutral) on a level ground.
1. Connect the battery cables from
another vehicle or from a another
battery to the jump-starting terminals
inside the engine compartment.
For more details, refer to "Jump
Starting" section in chapter 8.
2. Release the Electronic Parking Brake
with the Engine Start/Stop button in
the ON position.
3. Press the Engine Start/Stop button to
the OFF position.

06
6-43
Idle Stop and Go helps reduce fuel
consumption by automatically shutting
down the engine, when the vehicle is
at a standstill (i.e. red stop light, stop
sign, and traffic jam) subject to certain
prerequisite conditions being satisfied as
listed below.
The engine is automatically started upon
satisfying the starting conditions.
ISG system is always active, when the
engine is running.
Information
When the engine is automatically started
by ISG system, warning lights (i.e. ABS,
ESC, ESC OFF, EPS, and parking brake
warning light) may illuminate for a few
seconds due to low battery voltage.
However, it does not indicate a
malfunction with ISG system.
ISG System Operation
Prerequisite for activation
ISG system operates in the following
situations.
• The driver's seatbelt is fastened
• The driver's door and hood are closed
• The battery sensor is activated and
the battery is sufficiently charged
• Outside temperature is not too low or
too high
• The vehicle is driven over a constant
speed and stops
• The climate control system satisfies
the conditions
• The vehicle is sufficiently warmed up
• ISG related parts are working properly
• The incline is gradual
• The steering wheel is turned less than
180 degrees and then the vehicle
stops
Information
ISG system is not activated, when the
prerequisites to activate the ISG system
are unsatisfied. If this occurs, the ISG
OFF button indicator illuminates, and the
Auto Stop (
) indicator illuminates in
yellow on the instrument cluster.
When the Auto Stop (
) indicator stays
on the instrument cluster, have the system
inspected by an authorized retailer of
Genesis Branded products.
Auto stop
When ISG is on the engine will be
stopped automatically when both of the
following occurs:
1. Vehicle speed decreases to 0mph (0
km/h) full stop condition.
2. Brake pedal is depressed and gear is
in D (Drive) or N (Neutral).
The Auto Stop (
) indicator illuminates
in green on the instrument cluster, when
the engine stops.
Information
Idle stop cannot reoccur again until the
vehicle speed goes above 3 mph (5 km/h)
and then returns again to the automatic
stop conditions as previously mentioned.
IDLE STOP AND GO (ISG)

06
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When certain conditions are met, the
engine is automatically decoupled from
the transmission while gear remains in D
(Drive). When Coasting is operating, the
engine stays at idling speed to reduce
fuel consumption and increase coasting
distance.
Coasting Setting
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• The Coasting function must be turned
ON from the Settings menu in the
infotainment system screen. Select:
-Setup → Vehicle Settings → Drive
Mode → Coasting
For detailed information, refer to the
separately supplied manual.
• When Coasting is turned ON and
the conditions are met, the function
operates with a ‘Coasting’ message
illuminated on the instrument cluster.
Coasting Operating Conditions
The Coasting function will operate when
the accelerator pedal is depressed and
released under the following conditions.
• ECO is selected for driving mode
• ECO or Smart is selected for
Powertrain in the CUSTOM menu from
the infotainment system screen. If
Smart is selected, driver acceleration
should be mild
• The gear 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 30~100
mph (50~160 km/h) range
• The road gradient is within -5~+5%
range
Information
• If the front radar for smart cruise
control system cannot operate
normally, the inter-vehicle distance
and relative speed condition are
automatically ignored.
• The Coasting function works after the
engine is turned on, the transmission is
warmed up, and the engine sensor self-
diagnosis is completed.
• Depending on the driving situation,
Coasting operation may be temporarily
delayed even if the above conditions are
met.
COASTING (IF EQUIPPED)

06
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Drive mode may be selected according
to the driver's preference or road
condition.
Drive Mode
The mode changes whenever the DRIVE
MODE button is pressed.
COMFORT mode
COMFORT mode provides smooth
driving and comfortable riding.
ECO mode
ECO mode helps improve fuel efficiency for eco-friendly
driving.
Fuel efficiency varies according
to the driver's driving habit and
road condition.
• When ECO mode is selected, the
ECO indicator will illuminate on the
instrument cluster.
• 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.
-Engine noise may be louder at some
automatic transmission shifts as
down-shift requires pressing down
more on the accelerator.
The above situations are normal
conditions when ECO mode is activated
to help improve fuel efficiency.
DRIVE MODE INTEGRATED CONTROL SYSTEM

Driving Your Vehicle
6-50
Limitations of ECO mode
If the following conditions occur while
ECO mode is operating, the system
operation is limited even though there is
no change in the ECO indicator.
• When coolant temperature is low:
The system will be limited until engine
performance becomes normal.
• 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 according
to the shift location.
SPORT mode
SPORT mode provides sporty but firm riding.
In SPORT mode, the fuel
efficiency may decrease.
• When SPORT mode is selected, the
SPORT indicator will illuminate 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 releasing the accelerator
-Upshifts are delayed when
accelerating
CUSTOM mode
In CUSTOM mode, the driver can select separate modes for
each items in the infotainment
system screen.
- Powertrain: ECO/Comfort/Sport/
Smart
-Steering wheel: Comfort/Sport
-Suspension (if equipped with ECS):
Comfort/Sport
-AWD system (if equipped with AWD
system): ECO/Comfort/Sport
For detailed information, refer to the
separately supplied manual.
• When CUSTOM mode is selected, the
CUSTOM indicator will illuminate on
the instrument cluster.
• Whenever the engine is restarted,
the drive mode will revert back to
COMFORT mode. If CUSTOM mode is
desired, re-select CUSTOM mode.