cooling GENESIS G90 2023 User Guide

9-13
09
Engine Oil and Filter
The engine oil and filter should be
changed at the intervals specified in the
maintenance schedule. If the vehicle
is being driven in severe conditions,
more frequent oil and filter changes are
required.
Drive Belts
Inspect all drive belts for evidence
of cuts, cracks, excessive wear or oil
saturation and replace if necessary.
Drive belts should be checked
periodically for proper tension and
adjusted as necessary.
Information
When you are inspecting the belt, turn the
engine off.
Fuel Lines, Fuel Hoses and
Connections
Check the fuel lines, fuel hoses and
connections for leakage and damage.
Have an authorized retailer of Genesis
Branded products replace any damaged
or leaking parts immediately.
Fuel Filter
The fuel filter is considered to be
maintenance free but periodic inspection
is recommended for this maintenance
depends on fuel quality. If there are
some important matters like fuel flow
restriction, surging, loss of power, hard
starting problem etc., replace the fuel
filter immediately. Have you consult an
authorized retailer of Genesis Branded
products for details.
Vapor Hose and Fuel Filler Cap
The vapor hose and fuel filler cap should
be inspected at those intervals specified
in the maintenance schedule. Make sure
a new vapor hose or fuel filler cap is
correctly replaced.
Air Cleaner Filter
We recommend that the air cleaner filter
be replaced by an authorized retailer of
Genesis Branded products.
Spark Plugs
Make sure to install new spark plugs of
the correct heat range.
When assembling parts, be sure to
wipe out foreign substances inside
and outside of the boot bottom of the
ignition coil and the insulator of the
spark plug with a soft cloth to prevent
contamination of the spark plug
insulator.
Cooling System
Check cooling system components, such
as radiator, coolant reservoir, hoses and
connections for leakage and damage.
Replace any damaged parts.
EXPLANATION OF SCHEDULED MAINTENANCE ITEMS

9-15
09
ENGINE OIL
Suspension Mounting Bolts
Check the suspension connections for
looseness or damage. Retighten to the
specified torque.
Steering Gear box, Linkage &
Boots/Lower Arm Ball Joint
With the vehicle stopped and the engine
off, check for excessive free-play in the
steering wheel. Check the linkage for
bends or damage. Check the dust boots
and ball joints for deterioration, cracks,
or damage.
Replace any damaged parts.
Drive Shafts and Boots
Check the drive shafts, boots and clamps
for cracks, deterioration, or damage.
Replace any damaged parts and, if
necessary, repack the grease.
Air Conditioning Refrigerant
Check the air conditioning lines and
connections for leakage and damage.
Checking the Engine Oil Level
Engine oil is used for lubricating,
cooling, and operating various hydraulic
components in the engine. Engine oil
consumption while driving is normal,
and it is necessary to check and refill the
engine oil regularly. Also, check and refill
the oil level within the recommended
maintenance schedule to prevent
deterioration of oil performance.
Check the engine oil following the below
procedure.
1. Follow all of the oil manufacturer’s
precautions.
2. Be sure the vehicle is on the level
ground in P (Park) with the parking
brake set and the wheels blocked.
3. Turn the engine on and warm
the engine up until the coolant
temperature reaches a constant
normal temperature.
4. Turn the engine off, remove the oil
filler cap and pull the dipstick out.
Wait for 15 minutes for the oil to return
to the oil pan.
5. Wipe the dipstick clean and re-insert
it fully.

9-17
09
Checking the Engine Oil and
Filter

[The lubrication, rust prevention,
cooling, and cleaning effect of the
engine oil will gradually degrade
during its use. Have the engine oil
and filter changed by an authorized
retailer of Genesis Branded
products according to the Oil Life
Management System instructions
or the Maintenance Schedule at the
beginning of this chapter.

[If the maintenance schedule to
replace engine oil is exceeded,
the engine oil performance may
deteriorate, and the engine condition
may be affected. Therefore, replace
the engine oil according to the
maintenance schedule.

[To keep the engine in optimal
condition, use the recommended
engine oil and filter. If the
recommended engine oil and filter are
not used, replace it according to the
maintenance schedule under severe
usage conditions.

[The purpose of the maintenance
schedule for engine oil replacement
is to prevent oil deterioration and it is
irrelevant to oil consumption. Check
and refill engine oil regularly.
Information
When the oil pressure is low due to
insufficient engine oil, the Engine
Oil Pressure (
) warning light will
illuminate. In addition, the enhanced
engine protection system, which limits
the engine's power is activated and the
Malfunction Indicator Lamp (
) will
illuminate when the vehicle is driven in
this state continuously. When oil pressure
is restored, the Engine Oil Pressure
warning light will turn off and the engine
power will no longer be limited.
However, for 3.5 T-GDI and 3.5 T-GDI
48 V MHEV, when the oil pressure is
restored, the warning light and the
enhanced engine protection system will
turn off after the engine is restarted.
CAUTION
The engine oil is very hot
immediately after the vehicle has
been driven and can cause burns
during replacement. Replace the
engine oil after the engine oil has
cooled down.
WARNING
CALIFORNIA PROPOSITION 65
WARNING
Engine oil contains chemicals known to
the State of California to cause cancer,
birth defects and reproductive harm.
Used engine oil may cause irritation or
cancer of the skin if left in contact with
the skin for prolonged periods of time.
Always protect your skin by washing
your hands thoroughly with soap and
warm water as soon as possible after
handling used oil.

9-19
09
Information
The coolant level is influenced by the
engine temperature. Before checking or
refilling the coolant, turn the engine off.
WARNING
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.
Always turn off the vehicle unless the
vehicle has to be inspected with the
engine on. Be cautious as the cooling
fan may operate if the negative (-)
battery terminal is not disconnected.
WARNING
Make sure the coolant cap is properly
closed after refilling coolant. Otherwise
the engine could be overheated while
driving.
„Engine compartment front view
ORG3EV091045
1. Check if the coolant cap label is
straight in front.
ORG3EV091043
2. Make sure that the tiny protrusions
inside the coolant cap are securely
interlocked.

9-54
Maintenance
Engine compartment fuse panel
Type Fuse NameFuse
RatingCircuit Protected
MAINALT225A Alternator
MDPS1125A MDPS Unit
e-S/C125A[Mild HEV] Electric Super Charging Unit
(Power)
MULTICOOLING FAN100A Colling Fan Motor
IEB160A IEB Unit
IEB260A IEB Unit
AIR SUSPENSION
(ECS)50A Air Suspension (ECS) Relay
REAR HEATED150A Rear Heated #1 Relay
REAR HEATED240A Rear Heated #2 Relay
WIPER30A Wiper Motor
SBEOP30A Electronic Oil Pump
HEAD LAMP RH40A Head Lamp RH
HEAD LAMP LH40A Head Lamp LH
START30A Start Relay
MICROHORN15A PCB Block (Horn Relay)
A/C115A A/C Relay
ECU115A ECM
TCU120A TCM
FUEL PUMP20A Fuel Pump Relay
4WD20A AWD ECU

9-55
09
Engine compartment fuse panel
Fuse NameFuse
RatingCircuit Protected
IG130A IG1 Relay
ECU330A Engine Control Relay
IG230A IG2 Relay
ACC30A ACC Relay
ECU210A ECM
EWP20A Electronic Water Pump
MODULE110A Front Radar, Front Corner Radar LH/RH
MDPS210A MDPS Unit
IEB310A IEB Unit
TCU215A TCM, P/N Relay, Electronic Oil Pump
SENSOR310A Oxygen Sensor #1 (B1/S1), Oxygen Sensor #2 (B2/S1)
SENSOR210AOxygen Sensor #3 (B1/S2), Oxygen Sensor #4 (B2/S2),
Purge Control Solenoid Valve, Oil Pump Solenoid Valve,
Canister Close Valve, Oil Control Valve (Intake #1/#2), Oil
Control Valve (Exhaust #1/#2), RCV Control Solenoid Valve
#1/#2, E/R Junction Block (A/C Relay)
SENSOR110AE/R Junction Block (Fuel Pump Relay), Injector
#1/#2/#3/#4/#5/#6 (MPI)
IGN COIL15A Ignition Coil #1/#2/#3/#4/#5/#6
SENSOR415A Cooling Fan Motor, Electric Super Charging Unit (Signal)
ECU420A ECM
WASHER15A WASHER RELAY
MHSG10A[With Mild HEV] Mild Hybrid Starter & Generator Motor
(Signal)

9-59
09
Rear junction block
Fuse NameFuse
RatingCircuit Protected
B+2 50AICU Junction Block (IPS4, IPS5, Fuse - E-SHIFTER1, BRAKE
SWITCH, IBU1, UWB, MODULE9, CCU1, AIR BAG1)
B+3 50A ICU Junction Block (IPS1/IPS6/IPS7/IPS8)
B+1 50AICU Junction Block (LDC, Long Term Load Latch Relay,
Short Term Load Latch Relay)
ECS1 15A ECS Unit, Air ECS Unit
PRESAFETY SEAT
BELT230A Pre-Active Seat Belt Unit
PRESAFETY SEAT
BELT330A Pre-Active Seat Belt Unit
ECS2 25A Air ECS Unit
BATTERY
MANAGEMENT15A BMS Control Module
BLOWER (RR) 20A Rear Blower Relay
P/SEAT (RR LH)1 30A Rear Power Seat Module LH
MASSAGE SEAT
(RR)15A Rear Seat Lumbar Support Unit LH/RH
SBCM (RR RH) 20A Rear SBCM RH
S/HEATER
(RR LH)25ARear Power Seat Module LH, Rear Seat CCS Module LH,
Rear Seat Heater Control Module LH
MODULE18 10ADriver/Passenger Power Seat Switch, Driver/Passenger
Power Seat Module, Driver/Passenger Lumbar Support
Unit, Passenger Foot Massage Unit, Rear Seat Console
Switch LH/RH, Rear Power Seat Module LH/RH, Rear Seat
Lumbar Support Unit LH/RH, PTL Unit
AMP4 10A AMP, Support AMP
SBCM (PASS) 20A Passenger SBCM
P/SEAT (RR LH)2 25A Rear Power Seat Module LH
S/HEATER
(RR RH)25ARear Power Seat Module RH, Rear Seat CCS Module RH,
Rear Seat Heater Control Module RH
BATTERY C/FAN 15A BMS Cooling Fan
AMP1 25A AMP
AMP2 25A AMP
AMP3 25A Support AMP
P/WINDOW (RH) 30APassenger Safety Power Window Module, Rear Safety
Power Window Module LH
P/SEAT (RR RH)1 30A Rear Power Seat Module RH
POWER TRUNK 30A PTL Unit
RR DR CURTAIN 20A Rear Door Curtain
P/SEAT (RR RH)2 25A Rear Power Seat Module RH