2023 HYUNDAI IONIQ 5 coolant

Maintenance
9-6
Owner Maintenance Schedule
When you stop for charging: • Check the coolant level in the 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 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: • 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 gear shift occurs,
check the shift gear fluid level.
• Check the shift gear 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 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 headlamp alignment.
• 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 shift gear
linkage and controls.
• Clean the battery (12V) and terminals.
• Check the brake fluid level.

9-8
Maintenance
Normal Maintenance Schedule The following maintenance services must be performed to ensure good vehicle performance.
Keep receipts for all vehicle services to protect your warranty. Where both mileage and time are shown, the frequency of
service is determined by whichever occurs first.
MAINTENANCE INTERVALS
MAINTENANCE ITEM Months
4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 64 68 72 76 80 84 88 92 96
Miles×1,000 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120
Km×1,000 8 16 24 32 40 48 56 64 75 80 88 96 104 112 120 128 136 144 152 160 168 176 184 192
Cooling system
Inspect every 15,000 miles or 12 months
Rotate Tires
(Includes Tire Pressure and
Tread Wear Inspection) I I I I I I I I I I I I I I I I I I I I I I I I
Replace Climate Control Air
Filter (For Evaporator and
Blower Unit) R R
R R R R R R
Coolant *
1 Standard
At first, replace 120,000 miles (200,000 km) or 120 months.
After that, replace every 25,000 miles (40,000 km) or 24 month.
Low Conductivity Replace every 40,000 miles (60,000 km) or 36 months *
2

12V auxiliary battery condition I I
I I I I I I
Brake lines, hoses, and connections I I
I I I I I I
I : Inspect and if necessary, adjust, correct, clean or replace.
R : Replace or change. *1 : When replacing or adding coolant, visit an authorized HYUNDAI dealer.
*2 : For your convenience, it can be replaced prior to it’s interval when you do maintenance of other items.

09
9-11
Cooling System
Check cooling system components, such
as radiator, coolant reservoir, hoses and
connections for leakage and damage.
Replace any damaged parts.
Coolant
The coolant should be changed at the
intervals specified in the maintenance schedule.
Reduction Gear Fluid
The reduction gear fluid should be
inspected according to the intervals
specified in the maintenance schedule.
Brake Hoses and Lines
Visually check for proper installation,
chafing, cracks, deterioration and any
leakage. Replace any deteriorated or
damaged parts immediately.
Brake Fluid
Check the brake fluid level in the brake
fluid reservoir. The level should be
between the MIN and the MAX marks
on the side of the reservoir. Use only
hydraulic brake fluid conforming to DOT
4 specification.
Brake Discs, Pads, Calipers and
Rotors
Check the pads, the disc, and the rotor
for any excessive wear-out. Inspect
calipers for any fluid leakage.
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 vehicle
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.
explanation of scheduled Maintenance iteMs

Maintenance
9-12
„„Standard coolant
ONE1091002
„„Low conductivity coolant
ONE1091003
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 or F and the MIN
or L marks on the side of the coolant
reservoir when the parts in the motor
compartment is cool.
If the coolant is low, have the vehicle
inspected by an authorized HYUNDAI
dealer.
Use only designated coolant water for
electric vehicles, adding other types
of water or antifreeze can damage the
vehicle.
WARNING
Since specific coolant water (Blue color,
Low conductivity) is applied for electric
vehicles, replenishment of other
antifreeze or water may cause problems
to the vehicle.
WARNING
The electric motor for the
cooling fan may continue to
operate or start up when the
vehicle is not running and can
cause serious injury.
Keep hands, clothing and tools
away from the rotating fan
blades of the cooling fan.
The electric motor for the cooling
fan is controlled by vehicle coolant
temperature, refrigerant pressure and
vehicle speed. As the vehicle coolant
temperature decreases, the electric
motor will automatically shut off. This is
a normal condition.
coolant

Maintenance
9-14
Checking the Washer Fluid Level
ONE1091005
Check the fluid level in the washer fluid
reservoir and add fluid if necessary. Plain
water may be used if washer fluid is not
available. However, use washer solvent
with antifreeze characteristics in cold
climates to prevent freezing.
WARNING
To prevent serious injury or death, take
the following safety precautions when
using washer fluid: • Do not use coolant or antifreeze in
the washer fluid reservoir. Coolant
can severely obscure visibility when
sprayed on the windshield and
may cause loss of vehicle control
resulting in an accident or damage to
paint and body trim.
• Do not allow sparks or flame to
contact the washer fluid or the
washer fluid reservoir. Washer fluid
may contain alcohol and can be flammable.
• Do not drink washer fluid and avoid
contact with skin. Washer fluid is
harmful to humans and animals.
• Keep washer fluid away from
children and animals.
washer fluid
reduction gear fluid
There is no reduction gear fluid level
gauge in the vehicle. Check the
reduction gear fluid every 60,000 km
regularly. If the vehicle is driven under
severe condition, check the maintenance
under severe usage condition and
consult an authorized HYUNDAI dealer.

Maintenance
9-30
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.
Intended outboard sidewall
The side of an asymmetrical tire,
that must always face outward when
mounted on a vehicle.
Kilopascal (kPa)
The metric unit for air pressure.
Light Truck (LT) tire
A tire designated by its manufacturer
as primarily intended for use on
lightweight trucks or multipurpose
passenger vehicles.
Load ratings
The maximum load that a tire is rated
to carry for a given inflation pressure.
Load index
An assigned number ranging from 1
to 279 that corresponds to the load
carrying capacity of a tire.
Maximum inflation pressure
The maximum air pressure to which
a cold tire may be inflated. The
maximum air pressure is molded
onto the sidewall.
Maximum load rating
The load rating for a tire at the
maximum permissible inflation
pressure for that tire.

09
9-47
Fuse NameFuse Rating Circuit Protected
WIPER1 25A PCB Block (Wiper Main Relay)
EPCU1 15A Front Inverter (AWD)
HORN 15APCB Block (Horn Relay), PCB Block (Burglar Alarm
Horn Relay)
WIPER2 7.5A IBU
VCU2 15A
VCU
IG3 1 20A
ICU Junction Block (Fuse : F14, F16, F24)
IG3 3 15A Electronic Water Pump
IG3 5 10A
BMS Coolant 3Way Valve
VCU3 10A
VCU
IG3 4 10AA/C Coolant Valve, Electronic Water Pump #1, #2,
Electronic A/C Compressor
IEB3 10A
Multipurpose Check Connector, IEB Unit
IG3 6 10A
Cooling Fan Motor, Front Electronic Oil Pump (AWD)
MDPS2 10A
MDPS Unit
IG3 2 15A Front Inverter (AWD), VCU

Index
I-4
C
Cabin Air Filter .................................................................................................... 9-15
Filter Inspection ................................................................................................ 9-15
Filter Replacement ........................................................................................... 9-15
California Perchlorate Notice .............................................................................. 9-64
Charge Indicator Lamp for Electric Vehicle ........................................................1-25
Charging Status ................................................................................................ 1-25
Front Center Bumper ........................................................................................ 1-25
Charge Types for Electric Vehicle ....................................................................... 1-23
Charging Information ....................................................................................... 1-23
Charging Time Information .............................................................................. 1-23
Charging Types ................................................................................................. 1-24
Charging Connector Lock .................................................................................... 1-26
Locking Charging Cable .................................................................................. 1-26
Charging Electric Vehicle .................................................................................... 1-28
AC Charge ........................................................................................................ 1-30
Charging Precautions ....................................................................................... 1-29
DC Charge ........................................................................................................ 1-34
Electric Charging Door .................................................................................... 1-28
Portable Charge ................................................................................................ 1-36
Unlock Charging Door in Emergency ..............................................................1-30
Charging the Electric Vehicle (abrupt stop) .........................................................1-49
Action to be taken when charging stops abruptly ............................................1-49
Child Restraint System (CRS) ............................................................................. 3-39
Children Always in the Rear ............................................................................ 3-39
Installing a Child Restraint System (CRS) .......................................................3-41
Selecting a Child Restraint System (CRS) .......................................................3-40
Climate Control Additional Features ................................................................. 5-116
Auto Defogging System ................................................................................. 5-116
Auto Dehumidify ............................................................................................ 5-117
Auto. Controls That Use Climate Control Settings (for driver’s seat) ...........5-118
Recirculating Air When Washer Fluid Is Used ..............................................5-118
Smart ventilation ............................................................................................ 5-118
Consumer Information ......................................................................................... 2-16
Coolant ................................................................................................................. 9-12