2023 HYUNDAI IONIQ 5 oil

09
9-13
Checking the Brake Fluid Level
ONE1091004
Check the fluid level in the reservoir
periodically. The fluid level should be
between MAX and MIN marks on the side
of the reservoir.
Before removing the reservoir cap and
adding brake fluid, clean the area around
the reservoir cap thoroughly to prevent
brake fluid contamination.
If the level is low, add the specified brake
fluid to the MAX level. The level will fall
with accumulated kilometers. This is a
normal condition associated with the
wear of the brake linings. If the fluid level
is excessively low, have the brake system
checked by an authorized HYUNDAI
dealer.
WARNING
If the brake system requires frequent
additions of fluid this could indicate
a leak in the brake system. Have the
vehicle inspected by an authorized
HYUNDAI dealer.
WARNING
Do not allow brake fluid to come in
contact with your eyes. If brake fluid
comes in contact with your eyes, flush
your eyes with clean water for at least
15 minutes and get immediate medical
attention.
NOTICE
• Do not allow brake fluid to contact
the vehicle’s body paint, as paint
damage will result.
• Brake fluid, which has been exposed
to open air for an extended time should NEVER be used as its quality
cannot be guaranteed. It should be
disposed of properly.
• Do not use the wrong kind of brake
fluid. A few drops of mineral based
oil, in your brake system can damage
brake system parts.
Information
Use only the specified brake fluid (refer to “Recommended Lubricants and
Capacities” section in chapter 2).
Brake fluid

09
9-21
WARNING
Always follow these instructions when
recharging your vehicle’s battery to
avoid the risk of SERIOUS INJURY or
DEATH from explosions or acid burns: • Before performing maintenance or
recharging the battery, turn off all
accessories and stop the vehicle.
• Keep all flames, sparks, or smoking
materials away from the battery.
• Always work outdoors or in an area
with plenty of ventilation.
• Wear eye protection when checking
the battery during charging.
• The battery must be removed from
the vehicle and placed in a well
ventilated area.
• Watch the battery during charging,
and stop or reduce the charging
rate if the battery cells begin boiling
violently.
• The negative battery cable must
be removed first and installed last
when the battery is disconnected.
Disconnect the battery charger in the
following order:
1. Turn off the battery charger main
switch.
2. Unhook the negative clamp from the negative battery terminal.
3. Unhook the positive clamp from the positive battery terminal.
• Use batteries for replacement from
an authorized HYUNDAI dealer. By jump starting
After a jump start from a good battery,
drive the vehicle for 20-30 minutes
before it is shutoff. The vehicle may
not restart if you shut it off before the
battery had a chance to adequately
recharge. See “Jump Starting” in chapter
8 for more information on jump starting
procedures.
Information
An inappropriately disposed battery can be harmful to the
environment and human health. Dispose of the battery according
to your local law(s) or regulation.
Reset Items
The following items may need to be reset
after the battery has been discharged or
the battery has been disconnected. •
Driving info/After recharging/
Accumulated info (items in Utility
view) (see chapter 4)
• Integrated memory system (see
chapter 5)
• Power window (see chapter 5)
• Vision roof (see chapter 5)
• Power liftgate (see chapter 5)
• Climate control system (see chapter 5)
• Clock (see Infotainment system manual)
• Infotainment system (see
Infotainment system manual)

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
9-35
■ Blade type
■ Cartridge type
■ Multi type Normal Blown
Normal Blown
Normal Blown
OTM078035
A vehicle’s electrical system is protected
from electrical overload damage by fuses.
This vehicle has 5 fuse panels, one
located in the driver’s side panel bolster,
the other in the vehicle compartment.
If any of your vehicle’s lights,
accessories, or controls do not work,
check the appropriate circuit fuse. If a
fuse has blown, the element inside the
fuse will be melted or broken.
If the electrical system does not work,
first check the driver’s side fuse panel.
Before replacing a blown fuse, turn the
vehicle and all switches off, and then
disconnect the negative battery cable.
Always replace a blown fuse with one of
the same rating.
If the replacement fuse blows, this
indicates an electrical problem. Avoid
using the system involved. Consult an
authorized HYUNDAI dealer.
WARNING
NEVER replace a fuse with anything but
another fuse of the same rating. • A higher capacity fuse could cause
damage and possibly cause a fire.
• Do not install a wire or aluminum
foil instead of the proper fuse -
even as a temporary repair. It may
cause extensive wiring damage and
possibly a fire.
NOTICE
Do not use a screwdriver or any other
metal object to remove fuses because
it may cause a short circuit and damage
the system.
fuses

09
9-39
Instrument panel fuse panel
Fuse NameFuse Rating Circuit Protected
Child Lock 15A Child Lock Relay, Child Unlock Relay
A/BAG IND 7.5A Overhead Console
MEMORY2 10A
Head-Up Display
STA RT 7.5A VCU, IBU
S/CHARGE2 20A
SDC
MIRR HTR 10ADriver Outside Mirror Unit, Passenger Outside Mirror Unit
T/GATE 15A Liftgate Release Relay
EPCU2 10A
Rear Inverter
MODULE3 7.5AMultifunction Switch, IBU, Stop Lamp Switch, Driver
Door Module
CLUSTER 7.5A Head-Up Display, Instrument Cluster
IG3 8 10AV2L Unit, ICCU, VCMS, Rear Electronic Oil Pump, CDM
IG3 7 10AIncar Temperature Sensor, A/V & Navigation
Head Unit, A/C PTC Heater, A/C Control Module,
Instrument Cluster, High-Voltage Charging Lamp
IAU 10A
IAU, BLE UNIT
S/CHARGER/VISION ROOF 20A
SDC, Vison Roof
AFCU 10A
AFCU, Driver/Passenger Door Outside Handle

Maintenance
9-46
Type Fuse NameFuse Rating Circuit Protected
FUSEP/OUTLET1
40A
P/R Junction Block (RLY.11)
T/GATE 30A
PTG Unit
A/C2 15A A/C Control Module
EOP1 40A
Rear Electronic Oil Pump
EOP2 40A
Front Electronic Oil Pump (AWD)
E-SHIFTER2 10AP/R Junction Block (RLY.2), SCU, Electronic
ATM Shift Lever
P/OUTLET3 20A
Rear Power Outlet
P/OUTLET2 20A
Front Power Outlet

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

Maintenance
9-50
If the LED lamp does not operate, have
the system inspected by an authorized
HYUNDAI dealer.
The LED lamps cannot be replaced as
a single unit because it is an integrated
unit. The LED lamps has to be replaced with the unit.
A skilled technician should check or
repair the LED lamp, for it may damage
related parts of the vehicle.
Turn signal lamp (bulb type)
1. Engage the parking brake and
disconnect the negative battery cable.
2. Remove wheel guard clips (under the front bumper).
3. Push the wheel guard aside and remove the bulb socket by turning it
counterclockwise.
4. Remove the bulb from the socket
by pressing it in and rotating it
counterclockwise until the tabs on the
bulb align with the slots in the socket.
Pull the bulb out of the socket.
5. Install a new bulb by inserting it into the socket and rotating it until it locks
into place.
6. Push the socket into the assembly and turn the socket clockwise.
7. Install the wheel guard in the reverse
order.
WARNING
• Wear eye protection when changing
a bulb. Allow the bulb to cool down
before handling it.
• Always handle them carefully, and
avoid scratches and abrasions. If
the bulbs are lit, avoid contact with liquids.
• Never touch the glass with bare
hands. Residual oil may cause the
bulb to overheat and burst when lit.
• A bulb should be operated only when
installed in a turn signal lamp.
• If a bulb becomes damaged or
cracked, replace it immediately and
carefully dispose of it.
• Replacing the bulb may cause
damage to the bulb relevant parts
of the vehicle, and also may cause
injuries. To replace the turn signal
lamp, visit an authorized HYUNDAI
dealer.