2018 GENESIS G80 cooling

6-8
What to do in an emergency
6. If you cannot find the cause of the
overheating, wait until the engine
temperature has returned to nor-
mal. Then, if coolant has been
lost, carefully add coolant to the
reservoir to bring the fluid level in
the reservoir up to the halfway
mark.
7. Proceed with caution, keeping
alert for further signs of overheat-
ing. If overheating happens again,
call an authorized retailer of
Genesis Branded products for
assistance.
Serious loss of coolant indi-
cates a leak in the cooling sys-
tem and should be checked as
soon as possible by an author-
ized retailer of Genesis Branded
products.
CAUTION
NEVER remove the
radiator cap, drain
plug and heater hose
connector cap while
the engine and radia-
tor are hot. Hot coolant and
steam may blow out under pres-
sure, causing serious injury.
Turn the engine off and wait
until the engine cools down.
Use extreme care when remov-
ing the radiator cap. Wrap a
thick towel around it, and turn it
counterclockwise slowly to the
first stop. Step back while the
pressure is released from the
cooling system. When you are
sure all the pressure has been
released, press down on the
cap, using a thick towel, and
continue turning counterclock-
wise to remove it.
WARNING

7-22
Maintenance
Valve clearance
(Lambda engine)
Inspect for excessive valve noise
and/or engine vibration and adjust if
necessary. Have an authorized retail-
er of Genesis Branded products per-
form the operation.
Cooling system
Check cooling system components,
such as radiator, coolant reservoir,
hoses and connections for leakage
and damage. Replace any damaged
parts.
Engine coolant
The coolant should be changed at
the intervals specified in the mainte-
nance schedule.
Automatic transmission fluid
Automatic transmission fluid should
not be checked under normal usage
conditions. But in severe conditions,
the fluid should be changed at an
authorized retailer of Genesis
Branded products in accordance to
the scheduled maintenance at the
beginning of this chapter.
✽ ✽
NOTICE
Automatic transmission fluid color
is basically red.
As the vehicle is driven, the auto-
matic transmission fluid will begin
to look darker. This is a normal con-
dition and you should not judge the
need to replace the fluid based upon
the changed color.
The use of a non-specified fluid
could result in transmission
malfunction and failure. Use
only the specified automatic
transmission fluid (refer to
"Recommended Lubricants and
Capacities" in chapter 8).
CAUTION

7-27
7
Maintenance
E EN
NG
GI
IN
NE
E
C
CO
OO
OL
LA
AN
NT
T
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 cli-
mate.Checking the engine coolant
level
Never remove the
radiator cap, drain
plug and heater hose
connector cap while
the engine and radia-
tor are hot. Hot coolant and
steam may blow out under pres-
sure, causing serious injury.
(Continued)
WARNING
(Continued)
Turn the engine off and wait
until the engine cools down.
Use extreme care when remov-
ing the radiator cap. Wrap a
thick towel around it, and turn it
counterclockwise slowly to the
first stop. Step back while the
pressure is released from the
cooling system. When you are
sure all the pressure has been
released, press down on the
cap, using a thick towel, and
continue turning counterclock-
wise to remove it.
ODH073005

7-28
Maintenance
The electric motor for the cooling fan
is controlled by engine coolant tem-
perature, refrigerant pressure and
vehicle speed. As the engine coolant
temperature decreases, the electric
motor will automatically shut off. This
is a normal condition. If your vehicle
is equipped with GDI, the electric
motor for the cooling fan may begin
to operate at any time and continue
to operate until you disconnect the
negative battery cable.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 F and the L 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 F mark, but do not
overfill. If frequent additions are
required, we recommend that you
see an authorized retailer of Genesis
Branded products for a cooling sys-
tem inspection.
Recommended engine coolant
When adding coolant, use only
deionized water, distilled water or
soft water for your vehicle and
never mix hard water in the coolant
filled at the factory.
An improper coolant mixture can
result in severe malfunction or
engine damage.
The engine in your vehicle has alu-
minum engine parts and must be
protected by an ethylene-glycol-
based coolant to prevent corrosion
and freezing.
Do not use alcohol or methanol
coolant or mix them with the spec-
ified coolant.
Do not use a solution that contains
more than 60% antifreeze or less
than 35% antifreeze, which would
reduce the effectiveness of the
solution. The electric motor for
the cooling fan may
continue to operate
or start up when the
engine is not running
and can cause serious injury.
Keep hands, clothing and tools
away from the rotating fan
blades of the cooling fan.WARNING
ODH073004

7-67
7
Maintenance
Fuse NameFuse ratingCircuit Protected
E-SHIFTER 110A Electronic ATM Shift Lever
SMART KEY 110A Start/Stop Button Switch
MODULE 710A Multi-View Camera Module, Sunroof Motor, Head-Up Display, Cooling Fan Controller,
Passenger Lumbar Support Unit
MODULE 810A Smart Key Control Module, BCM
MODULE 220A
Smart Key Control Module, Overhead Console Lamp, BCM, AMP
Digital Clock, Keyboard, I-BOX, A/V & Navigation Head Unit, Front Monitor, Electronic ATM Shift Lever,
Front Wireless Charger, Front Power Outlet & Cigarette Lighter, Multi-View Camera Module,
Metal Core Block (PCB #1 - Power Outlet Relay)
P/SEAT DRV 130A Driver IMS Control Module, Driver Power Seat Relay Box
P/SEAT PASS 130A Passenger Power Seat Relay Box
DOOR LAMP10A Driver/Passenger Door Module, Rear Door Module LH/RH
BRAKE SWITCH10A Smart Key Control Module, Stop Lamp Switch
A/CON20A Metal Core Block (PCB #1 - Blower Relay), Ionizer, CO2 Sensor, A/C Control Module

7-69
7
Maintenance
Engine compartment fuse panel
Fuse NameFuse ratingCircuit Protected
ALT200AAlternator, Multifuse (BATT) - B+2/ B+5/ MDPS 1,
Fuse - P/SEAT DRV 2/ P/SEAT RR/ SEAT LUMBAR/ ESC 1/ ESC 2
B+160A IGPM (Fuse - BRAKE SWITCH, E-SHIFTER 1 Leak Current Autocut Device (Fuse - INTERIOR LAMP/
MULTI MEDIA 1/ MEMORY 3), IPS 1)
B+360A IGPM (Fuse - SMART KEY 1/ SMART KEY 2/ MODULE 1/ B/A HORN, IPS 2/IPS 3/IPS 5/IPS 7)
B+460A IGPM (Fuse - DOOR LAMP/ MODULE 9/ MODULE 10, IPS 4/ IPS6/ IPS)
B+660A Metal Core Block (PCB #1 Fuse - ECU 3/ IG2/ MODULE 1)
B+780A Metal Core Block (PCB #2 Fuse - HORN/ ACC/ EPB 1/ EPB 2/ B/UP LAMP)
B+260A IGPM (Fuse - P/HANDLE/ P/WDW LH/ P/SEAT DRV 1/ P/SEAT PASS 1/ S/HEATER PASS/ POWER
OUTLET 3/ SUNROOF/ P/DOOR DRV/ P/DOOR PASS)
B+580A Metal Core Block (PCB #1 Fuse - BLOWER/ DEICER/ H/LAMP WASHER/ H/LAMP HI SOL)
MDPS 1125A MDPS Unit
C/FAN80A Cooling Fan Controller
P/SEAT
RR30A Not Used
ESC 240A ESC Module, Multipurpose Check Connector
ESC 140A ESC Module, Multipurpose Check Connector
P/SEAT DRV 225A Driver IMS Control Module, Driver Power Seat Switch, Driver Power Seat Relay Box
VACUUM
PUMP40A Vacuum Pump Relay
WIPER 130A Wiper Motor