2021 GENESIS G80 heater

09
9 -7
Owner Maintenance Schedule
When you stop for fuel:
• Check the engine oil level.
• Check the coolant level in the engine
coolant reservoir or the liquid-cooled
intercooler coolant reservoir.
• Check the windshield washer fluid
level.
• Check for low or under-inflated tires.
WARNING
Be careful when checking your coolant
level when the engine is hot. This may
result in coolant being blown out of the
opening and cause serious burns and
other injuries.
While operating your vehicle:
• Note any changes in the sound of the
exhaust or any smell of exhaust fumes
in the vehicle.
• Check for vibrations in the steering
wheel. Notice if there is any increased
steering effort or looseness in the
steering wheel, or change in its
straight-ahead position.
• Notice if your vehicle constantly turns
slightly or “pulls” to one side when
traveling on smooth, level road.
• When stopping, listen and check for
unusual sounds, pulling to one side,
increased brake pedal travel or “hard-
to-push” brake pedal.
• If any slipping or changes in the
operation of your transmission occurs,
check the transmission fluid level.
• Check the automatic transmission P
(Park) function.
• Check the parking brake.
• Check for fluid leaks under your
vehicle (water dripping from the air
conditioning system during or after
use is normal).
At least monthly:
• Check coolant level in the engine
coolant reservoir.
• Check the operation of all exterior
lights, including the stoplights, turn
signals and hazard warning flashers.
• Check the inflation pressures of all
tires including the spare for tires that
are worn, show uneven wear, or are
damaged.
• Check for loose wheel lug nuts.
At least twice a year: (i.e., every
Spring and Autumn)
• Check radiator, heater and air
conditioning hoses for leaks or
damage.
• Check windshield washer spray and
wiper operation. Clean wiper blades
with a clean cloth dampened with
washer fluid.
• Check headlamp alignment.
• Check muffler, exhaust pipes, shields
and clamps.
• Check the seat belts for wear and
function.
At least once a year:
• Clean body and door drain holes.
• Lubricate door hinges and hood
hinges.
• Lubricate door and hood locks and
latches.
• Lubricate door rubber weather strips.
• Check the air conditioning system.
• Inspect and lubricate automatic
transmission linkage and controls.
• Clean the battery and terminals.
• Check the brake fluid level.

Maintenance
9-18
ENGINE COOLANT/LIQUID-COOLED INTERCOOLER COOLANT
The high-pressure cooling system has a
reservoir filled with year-round antifreeze
coolant. The reservoir is filled at the
factory.
Check the antifreeze protection and
coolant level at least once a year, at
the beginning of the winter season and
before traveling to a colder climate.
Checking the Coolant Level
„„Engine coolant„Ǵ2.5L T-GDI
ORG3090010
„Ǵ3.5L T-GDI
ORG3090054
„„Liquid-cooled intercooler coolant„Ǵ2.5L T-GDI
ORG3090011
„Ǵ3.5L T-GDI
ORG3090055
Check the condition and connections
of all cooling system hoses and
heater hoses. Replace any swollen or
deteriorated hoses.
The coolant level should be filled
between the MAX and the MIN marks on
the side of the coolant reservoir when
the engine is cool.
If the coolant level is low, add enough
distilled (deionized) water to bring the
level to the MAX mark, but do not overfill.
If frequent additions are required, see an
authorized retailer of Genesis Branded
products for a cooling system inspection.

09
9-47
Instrument panel fuse panel
Fuse NameFuse Rating Circuit Protected
MODULE9 10AOverhead Console, AMP, Smart Phone Wireless Charger,
Low DC-DC Converter (AUX/AMP), Data Link Connector,
Driver/Passenger Power Seat Module, Electro Chromic
Mirror, Front/Rear A/C controller, Rear Seat Console
Remote Control Switch Switch, A/V & Navigation Head
Unit, A/C Control Module, Rear Seat LH/RH Heater Unit
SUNROOF 25A
Sunroof Control Unit (Master/Slave)
MODULE11 10AHead Lamp LH, Head Lamp RH, Multifunction Switch,
ADAS Unit (Parking)
MODULE12 10A
IAU, IBU
A/C3 10AE/R SUB Junction Block(Blower Relay), Incar Temperature
Sensor, A/C Control Module, Front A/C controller, Rear A/C
controller
A/BAG IND 10A
Instrument Cluster, Overhead Console
E-SHIFTER2 10A
Electronic ATM Shift Lever Dial
SPARE(IG2) 10A
Not Used
MODULE10 10A
ICU Junction Block (ESU)
MODULE7 10ADriver Door Module, IBU, Multifunction Switch, IAU, Stop
Lamp Switch
MULTI MEDIA 10A
Low DC-DC Converter
MODULE13 10AFront/Rear A/C controller, Rain Sensor, Head-Up Display,
Security Indicator, A/C Control Module, Rear Occupant
Alert (ROA) Sensor, PTL Unit, Driver/Passenger Power
Outside Mirror, Driver/Passenger Power Seat Module,
Driver/Passenger Power Seat Switch, Driver/Passenger
Lumbar Support Unit(3/5/7CELL)
CLUSTER 10A
Instrument Cluster, Head-Up Display
IBU2 10A
IBU
AIR BAG2 15A
SRS Control Module, Passenger Occupant Detection Sensor
PRESAFETY
SEAT BELT3 10A
Pre-Active Seat Belt Unit

Maintenance
9-48
Instrument panel fuse panel
Fuse NameFuse Rating Circuit Protected
MODULE8 10ARear Radar LH/RH, ECS Unit, RWS Module, ADAS Unit
(Driving), ADAS Unit (Parking), Crash Pad Switch, Front
Console Switch, Steering Tilt & Telescopic Unit, LKAS Unit
MODULE5 10A
ICU Junction Block (ESU), Hazard Switch
MODULE3 10ARear Seat Console Remote Control Switch Switch, Active
Air Flap Module, Clock Spring, Steering Tilt & Telescopic
Unit, Multifunction Switch
P/WINDOW LH 30ADriver Power Window Module, Rear Power Window Module
LH
CURTAIN 10A
IBU
P/SEAT PASS2 25A
Passenger Power Seat Module
TRUNK 10A
Trunk Release Relay
AIR BAG1 15A
SRS Control Module
E-SHIFTER1 10A
Electronic ATM Shift Lever Dial
MODULE4 10A
Driver Door Module, Data Link Connector
P/SEAT DRV1 25A
Driver Power Seat Module
P/SEAT 10A
Driver/Passenger Lumbar Support Unit (3/5/7CELL)
POWER
HANDLE 15A
Steering Tilt & Telescopic Unit
IBU1 10AIAU, IBU, BLE Unit, Driver Door Outside Handle, Passenger
Door Outside Handle
POWER
OUTLET 20A
Armrest Power Outlet
P/SEAT DRV2 25A
Driver Power Seat Module
P/SEAT PASS1 25A
Passenger Power Seat Module
S/HEATER DRV 20A
Driver Power Seat Module
S/HEATER PASS 20A
Passenger Power Seat Module
DOOR LOCK 10A
Center Door Lock/Unlock Relay, Driver Door Unlock Relay
SPARE(B+) 10A
Not Used
MODULE6 10AArmrest Lamp, IBU, Low DC-DC Converter(AUX/AMP),
Electronic ATM Shift Lever Dial, Front Tray Lamp, IAU,
BRAKE SWITCH 10A
Stop Lamp Switch, IBU

09
9-53
Engine compartment fuse panel
TypeFuse Name Fuse Rating Circuit Protected
MULTI FUEL HEATER
40A
Not Used
PTC HEATER1 50A
Not Used
PTC HEATER2 50A
Not Used
PTC HEATER3 50A
Not Used
SB BLOWER 40A
Blower Relay
MICRO LDC
10AFront Radar LH/RH, Rear Radar LH/RH,
Smart Phone Wireless Charger, Head-Up
Display,
Instrument Cluster, Front/Rear A/C controller,
Rear Seat Console Remote Control Switch
Switch,
Front Console Keyboard
A/C 10A
A/C Control Module

09
9-55
Rear junction block
Fuse NameFuse
Rating Circuit Protected
B+4 50AICU Junction Block(Fuse(P/Seat PASS2, Module4, Sunroof,
Door Lock, Trunk))
B+2 30AICU Junction Block(Fuse(IBU1, E-Shifter1, Spare(B+),
Module5, Air Bag1), IPS2, IPS5)
B+1 50AICU Junction Block(Fuse(Brake Switch)),
IPS1, IPS3, IPS4, IPS7, Long/Short Term Load Latch Relay
B+3 50AICU Junction Block(Fuse(P/Window LH, S/Heater DRV,
S/Heater PASS, P/Seat DRV1, P/Seat DRV2, P/Seat PASS1,
Curtain, Power Handle, P/Seat))
DCU3 20ANot Used
DCU4 10ANot Used
CHILD LOCK 15AChild Lock/Unlock Relay
DCU1 20ANot Used
P/WINDOW RH 30APassenger Power Window Module, Rear Power Window
Module RH
DCU2 20ANot Used
AMP 25ALow DC-DC Converter (AMP)
P/DOOR RR LH 15ARear Door Latch LH
P/DOOR PASS 15APassenger Door Latch
PRESAFETY SEAT BELT1 30A
Pre-Active Seat Belt Unit
P/DOOR RR RH 15ARear Door Latch RH
ECS 15AECS Unit
P/DOOR DRV 15ADriver Door Latch
PRESAFETY SEAT BELT2 30A
Pre-Active Seat Belt Unit
P/SEAT RR 20ANot Used
S/HEATER RR LH 20ARear Seat LH Heater Unit
POWER TRUNK 30APTL Unit (Power Trunk Lid)
S/HEATER RR RH 20ARear Seat RH Heater Unit

09
9-57
Battery junction block
Fuse NameFuse Rating Circuit Protected
B+5 125A
E/R SUB Junction Block (B+)
B+6 100ARear Junction Block(Fuse(B+1, AMP, P/Window RH, P/Seat
RR, ECS, Presafety Seat Belt1, Child Lock))
B+7 100ARear Junction Block(Fuse(B+3, S/Heater RR LH,
S/Heater RR RH, Power Trunk, P/Door DRV, P/Door PASS))
B+8 100ARear Junction Block(Fuse(B+2, B+4, P/Door RR LH,
P/Door RR RH, Presafety Seat Belt2))
AMS 10A
Battery Sensor
RWS 100A
RWS MODULE