belt GENESIS G90 2023 Repair Manual

9-6
Maintenance
Owner Maintenance Schedule
When you stop for fuel:

[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 if the motor compartment 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: (for example,
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 headlight 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.

9-8
Maintenance
Normal Maintenance Schedule
MAINTENANCE
INTERVALS
MAINTENANCE
ITEMNumber of months or driving distance, whichever comes first
Months 12 24 36 48 60 72 84 96 108 120 132 144 156
Miles×1,000 8 16 24 32 40 48 56 64 72 80 88 96 104
Km×1,000 13 26 39 52 65 78 91 104 117 130 143 156 169
Engine oil and engine oil filter
*1
RRRRRRRRRRRRR
Fuel additives
*2
Add every 8,000 miles (13,000 km) or 12 months
Air cleaner filterInspect every 8,000 miles (13,000 km) or 12 months,
replace every 24,000 miles (39,000 km) or 36 months
Spark plugsRR
Rotate tires Rotate tires every 8,000 miles (13,000 km) or 12 months
Cabin air filter
(for evaporator and blower unit)RRRRRR
Drive belts
*3
At first, inspect at 48,000 miles (78,000 km) or 72 months,
after that, inspect every 8,000 miles (13,000 km) or 12 months
MHEV (Mild Hybrid Vehicle) belt *
3 (if equipped)Inspect every 6,000 miles (10,000 km) or 12 months
Replace every 60,000 miles (100,000 km) or 48 months
I : Inspect and if necessary, adjust, correct, clean or replace.
R : Replace or change.*1 :
Requires grade engine oil. If a lower grade engine oil (mineral oil including Semi-
synthetic) is used, then the engine oil and engine oil filter must be replaced as indicated severe maintenance condition.
*2 :
If TOP TIER Detergent Gasoline is not available, one bottle of additive is recommended. Additives are available from your
authorized retailer of Genesis Branded products along with information on how to use them. Do not mix other additives.
*3 :
The drive belt should be replaced when cracks occur or tension is reduced.

9-11
09
Maintenance Under Severe Usage Conditions
The following items must be serviced more frequently on cars mainly used under
severe driving conditions. Refer to the chart below for the appropriate maintenance
intervals.
R : Replace
I : Inspect and if necessary, adjust, correct, clean or replace
Maintenance itemMaintenance
operationMaintenance intervalsDriving
condition
Engine oil and filter*1RReplace every 5,000 miles
(8,000 km) or 6 monthsD, H, I, L
MHEV (Mild Hybrid Vehicle)
belt (if equipped)IInspect every 3,000 miles
(5,000 km) or 6 months
B, C, D,
E, I, K
RReplace every 30,000 miles
(50,000 km) or 24 months
Air cleaner filter IInspect more frequently
depending on the conditionC, E
Spark plugs RReplace more frequently
depending on the conditionA, B, F, G,
H, I, K
Steering gear rack, linkage and
bootsIInspect more frequently
depending on the conditionC, D, E,
F, G
Front suspension ball joints IInspect more frequently
depending on the conditionC, D, E,
F, G
Disc brakes and pads, calipers
and rotorsIInspect more frequently
depending on the conditionC, D, E, G,
H, J, K
Parking brake IInspect more frequently
depending on the conditionC, D, G, H
Drive Shaft IInspect more frequently
depending on the conditionC, D, E, F,
G, H, I, J
Cabin air filter RReplace more frequently
depending on the conditionC, E, G
Automatic transmission fluid RReplace every 60,000 miles
(100,000 km)A, C, F, G,
H, I, J, K
Front differential oil (AWD) /
Rear differential oilRReplace every 72,000 miles
(120,000 km)C, D, E, G,
H, I, J
Propeller shaft IInspect more frequently
depending on the conditionC, D, E, F,
G, H, I, J
Transfer case oil (AWD) No check, No service required
*1 : Requires grade engine oil. If a lower grade
engine oil (mineral oil including Semi-synthetic) is used, then the engine oil and engine
oil filter must be replaced as indicated severe maintenance condition.

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

9-39
09
Tire speed ratings
The chart below lists many of the
different speed ratings currently
being used for passenger vehicle
tires. The speed rating is part of the
tire size designation on the sidewall
of the tire. This symbol corresponds
to that tire’s designed maximum safe
operating speed.
Speed Rating
SymbolMaximum Speed
S 112 mph (180 km/h)
T 118 mph (190 km/h)
H 130 mph (210 km/h)
V 149 mph (240 km/h)
W 168 mph (270 km/h)
Y 186 mph (300 km/h)
3. Checking tire life (TIN : Tire
Identification Number)
Any tires that are over six years old,
based on the manufacturing date,
(including the spare tire) should be
replaced by new ones. You can find
the manufacturing date on the tire
sidewall (possibly on the inside of
the wheel), displaying the DOT Code.
The DOT Code is a series of numbers
on a tire consisting of numbers and
English letters. The manufacturing
date is designated by the last four
digits (characters) of the DOT code.
DOT : XXXX XXXX OOOO
The front part of the DOT shows a
plant code number, tire size and
tread pattern and the last four
numbers indicate week and year
manufactured.
For example:
DOT XXXX XXXX 1522 represents that
the tire was produced in the 15th
week of 2022.4. Genesis exclusive tire
Genesis Branded Vehicle
recommends that tires designed
specifically for Genesis vehicles
be used. You may find the marking
“GOE” (Genesis Original Equipment)
embossed on the tire sidewall.
5. Tire ply composition and material
The number of layers or plies of
rubber-coated fabric in the tire. Tire
manufacturers also must indicate the
materials in the tire, which include
steel, nylon, polyester, and others.
The letter “R” means radial ply
construction; the letter “D“ means
diagonal or bias ply construction;
and the letter “B” means belted-bias
ply construction.
6. Maximum permissible inflation
pressure
This number is the greatest amount
of air pressure that should be put in
the tire. Do not exceed the maximum
permissible inflation pressure. Refer
to the Tire and Loading Information
label for recommended inflation
pressure.
7. Maximum load rating
This number indicates the maximum
load in kilograms and pounds that
can be carried by the tire. When
replacing the tires on the vehicle,
always use a tire that has the same
load rating as the factory installed
tire.

9-41
09
WARNING
The temperature grade for this tire is
established for a tire that is properly
inflated and not overloaded.
Excessive speed, under-inflation,
over-inflation, or excessive loading,
either separately or in combination,
can cause heat build-up and
possible sudden tire failure. This
may cause loss of vehicle control
resulting in an accident.
Tire Terminology and Definitions
Air pressure
The amount of air inside the tire
pressing outward on the tire. Air
pressure is expressed in pounds per
square inch (psi) or kilopascal (kPa).
Accessory weight
This means the combined weight
of optional accessories. Some
examples of optional accessories
are automatic transmission, power
seats, and air conditioning.
Aspect ratio
The relationship of a tire’s height to
its width.
Belt
A rubber coated layer of cords that
is located between the plies and the
tread. Cords may be made from steel
or other reinforcing materials.
Bead
The tire bead contains steel wires
wrapped by steel cords that hold the
tire onto the rim.
Bias ply tire
A pneumatic tire in which the plies are
laid at alternate angles less than 90
degrees to the centerline of the tread.
Cold tire pressure
The amount of air pressure in a tire,
measured in pounds per square inch
(psi) or kilopascals (kPa) before a tire
has built up heat from driving.
Curb weight
This means the weight of a motor
vehicle with standard and optional
equipment including the maximum
capacity of fuel, oil and coolant, but
without passengers and cargo.
DOT markings
A code molded into the sidewall
of a tire signifying that the tire
is in compliance with the U.S.
Department of Transportation motor
vehicle safety standards. The DOT
code includes the Tire Identification
Number (TIN), an alphanumeric
designator which can also identify
the tire manufacturer, production
plant, brand and date of production.
GVWR
Gross Vehicle Weight Rating
GAWR FRT
Gross Axle Weight Rating for the
Front Axle.
GAWR RR
Gross Axle Weight Rating for the
Rear axle.

9-44
Maintenance
Vehicle placard
A label permanently attached
to a vehicle showing the
original equipment tire size and
recommended inflation pressure.
All Season Tires
Genesis Branded Vehicle specifies
all season tires on some models to
provide good performance for use
all year round, including snowy and
icy road conditions. All season tires
are identified by ALL SEASON and/
or M+S (Mud and Snow) on the tire
sidewall. Snow tires have better
snow traction than all season tires
and may be more appropriate in
some areas.
Snow Tires
If you equip your car with snow
tires, they should be the same size
and have the same load capacity as
the original tires. Snow tires should
be installed on all four wheels;
otherwise, poor handling may result.
Snow tires should carry 4 psi (28 kPa)
more air pressure than the pressure
recommended for the standard
tires on the tire label on the driver’s
side of the center pillar, or up to the
maximum pressure shown on the tire
sidewall, whichever is less. Do not
drive faster than 75 mph (120 km/h)
when your vehicle is equipped with
snow tires.
Radial-Ply Tires
Radial-ply tires provide improved
tread life, road hazard resistance
and smoother high speed ride. The
radial-ply tires used on this vehicle
are of belted construction, and are
selected to complement the ride
and handling characteristics of
your vehicle. Radial-ply tires have
the same load carrying capacity,
as bias-ply or bias belted tires of
the same size, and use the same
recommended inflation pressure.
Mixing of radial-ply tires with
bias-ply or bias belted tires is not
recommended. Any combinations of
radial-ply and bias-ply or bias belted
tires when used on the same vehicle
will seriously deteriorate vehicle
handling. The best rule to follow
is: Identical pairs of radial-ply tires
should always be used as a set for
the front tires and a set for the rear
tires.
Longer wearing tires can be more
susceptible to irregular tread wear.
It is very important to follow the tire
rotation interval in this chapter to
achieve the tread life potential of
these tires. Cuts and punctures in
radial-ply tires are repairable only in
the tread area, because of sidewall
flexing. Consult your tire dealer for
radial-ply tire repairs.
WARNING
Do not mix bias ply and radial ply
tires under any circumstances.
This may cause unusual handling
characteristics that may cause loss
of vehicle control resulting in an
accident.

9-50
Maintenance
Instrument panel fuse panel
Fuse NameFuse
RatingCircuit Protected
P/SEAT (PASS)225A Passenger Power Seat Module
S/HEATER
(PASS)25A Passenger Power Seat Module
A/BAG IND10A Overhead Console
UWB10ABLE Unit, Interior UBW Unit #1/#2/#3, Interior UBW Unit,
Rear UBW Unit LH/RH, Front UBW Unit LH/RH
P/SEAT (PASS)130A Passenger Power Seat Module
P/SEAT (DRV)130A Driver Power Seat Module
SUNROOF220A Sunroof Rear Rollo Controller
MODULE1310AElectro Chromic Mirror, Data Link Connector, Front A/C
Controller, A/C Control Module, AMP CCIC Keyboard,
Smart Phone Wireless Charger, Support AMP, LDC (IG1
Input), CCIC Head Unit, REAR Junction Block (LDC - IG1
Input), Driver/Passenger Power Seat Module, Rear Seat
CCS Module LH/RH, Rear Seat Heater Control Module LH/
RH, Rear Power Seat Module LH/RH, Rear Seat Console
Wireless Charger, Rear Seat Console UVC Lamp, Armrest
Touch Screen, AMP
MASSAGE SEAT
(FRT)15ADriver/Passenger Lumbar Support Unit, Passenger Foot
Massage Unit
S/HEATER
(DRV)25A Driver Power Seat Module
CURTAIN15A IBU
ADAS DRV110A ADAS Unit (Driving)
MODULE1410ADriver/Passenger Door Outside Handle, Rear Door Outside
Handle LH/RH
P/SEAT (DRV)225A Driver Power Seat Module
PRESAFETY
SEAT BELT110A Pre-Active Seat Belt Unit
SBCM (RR LH)20A Rear SBCM LH
P/WINDOW
(LH)30ADriver Safety Power Window Module, Rear Safety Power
Window Module LH
MODULE810AADAS Unit (Parking), Center Control Panel, CCIC Head Unit,
Rear Seat Console Tray Lamp, Rear Seat Console Remote
Control Switch, Instrument Cluster, Rear Seat Console UVC
Lamp
BRAKE SWITCH10A IBU, Stop Lamp Switch
SUNROOF120A Sunroof Glass Controller

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

9-61
09
Battery junction block
Fuse Name Fuse Rating Circuit Protected
LDC225A[Mild HEV] Battery System Assembly (Low DC-DC
Converter)
AMS10A 12V Battery Sensor
B+6100ARear Junction Block (Fuse - P/WINDOW (RH), BATTERY C/
FAN, P/SEAT (RR RH)1, P/SEAT (RR RH)2, S/HEATER (RR
RH), POWER TRUNK, RR DR CURTAIN, B+1)
B+560AICU Junction Block (Fuse - P/SEAT (PASS)1, P/SEAT
(PASS)2, MASSAGE SEAT (FRT), ADAS DRV1, S/HEATER
(PASS), CURTAIN, SUNROOF2, MODULE14)
B+460AICU Junction Block (Fuse - SBCM (DRV), SBCM (RR LH),
SUNROOF1, P/SEAT (DRV)1, P/SEAT (DRV)2, POWER
HANDLE, S/HEATER (DRV), P/WINDOW (LH))
B+8100ARear Junction Block (LDC, Fuse - PRESAFETY SEAT
BELT2, ECS1, ECS2, PRESAFETY SEAT BELT3, BATTERY
MANAGEMENT)
B+7100ARear Junction Block (Fuse -SBCM (PASS), SBCM (RR RH),
P/SEAT (RR LH)1, P/SEAT (RR LH)2, S/HEATER (RR LH),
MASSAGE SEAT (RR), BLOWER (RR), MODULE18, B+2, B+3)
RWS100A RWS Module
B+9125AE/R Junction Block (Fuse - HEAD LAMP LH, START, TCU1,
4WD, HEAD LAMP RH, ECU1, FUEL PUMP, ECU3)