2018 Hyundai Ioniq Hybrid Maintenance

7-52
Maintenance
Low aspect ratio tires
The aspect ratio is lower than 50 on
low aspect ratio tires.
Because low aspect ratio tires are
optimized for handling and braking,
their sidewall is a little stiffer than a
standard tire. Also low aspect ratio
tires tend to be wider and conse-
quently have a greater contact patch
with the road surface. In some
instances they may generate more
road noise compared with standard
tires.The side wall of a low aspect
ratio tire is shorter than the nor-
mal one. Thus, the low-aspect
wheel and tire are easily dam-
aged. Follow the below instruc-
tions.
•When driving on a rough road
or driving off a road, be care-
ful not to damage the tires
and wheels. After driving,
inspect the tires and wheels.
•When passing over a pothole,
speed bump, manhole, or
curb stone, drive the vehicle
slowly so as not to damage
the tires and wheels.
•When there is an impact on a
tire, inspect the tire condition.
Or, contact an authorized
HYUNDAI dealer.
(Continued)
CAUTION(Continued)
•Inspect the tire condition and
pressure every 3,000 km
(1,800 miles) to prevent tire
damage.
•It is difficult to recognize a tire
damage only with your eyes.
When there is a slight hint of a
tire damage, check and replace
the tire to prevent the damage
caused by air leakage.
•When a tire is damaged while
driving on a rough road, off a
road, or over obstacles, such
as a pothole, manhole, or curb
stone, your warranty does not
cover the damage.
•The tire information is speci-
fied on the tire side wall.

7-53
7
Maintenance
FUSES
A vehicle’s electrical system is pro-
tected from electrical overload dam-
age by fuses.
This vehicle has 2 (or 3) fuse panels,
one located in the driver’s side panel
bolster, the other in the engine com-
partment.
If any of your vehicle’s lights, acces-
sories, 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 engine and all switches
off, and then disconnect the negative
battery cable. Always replace a
blown fuse with one of the same rat-
ing.
If the replacement fuse blows, this indi-
cates an electrical problem. Avoid
using the system involved and immedi-
ately consult an authorized HYUNDAI
dealer.Information
Three kinds of fuses are used: blade
type for lower amperage rating, car-
tridge type, and multi fuse for higher
amperage ratings.
i
Normal ■Blade type
■Cartridge typeBlown
NormalBlown
NormalBlown
OLF074075
Do not use a screwdriver or any
other metal object to remove
fuses because it may cause a
short circuit and damage the
system.
CAUTION
NEVER replace a fuse with any-
thing 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 alu-
minum foil instead of the
proper fuse - even as a tem-
porary repair. It may cause
extensive wiring damage and
possibly a fire.
WARNING
Normal
Blown
■Multi fuse

7-54
Maintenance
Instrument panel fuse replace-
ment
1. Turn the vehicle off.
2. Turn all other switches off.
3. Open the fuse panel cover.
4. Refer to the label on the inside of
the fuse panel cover to locate the
suspected fuse location.5. Pull the suspected fuse straight
out. Use the removal tool provided
in the engine compartment fuses
panel.
6. Check the removed fuse; replace it
if it is blown. Spare fuses are pro-
vided in the instrument panel fuse
panels (or in the engine compart-
ment fuse panel).
7. Push in a new fuse of the same
rating, and make sure it fits tightly
in the clips. If it fits loosely, we rec-
ommend that you consult an
authorized HYUNDAI dealer.In an emergency, if you do not have
a spare fuse, use a fuse of the same
rating from a circuit you may not
need for operating the vehicle, such
as the cigarette lighter fuse.
If the headlamps or other electrical
components do not work and the
fuses are undamaged, check the
fuse panel in the engine compart-
ment. If a fuse is blown, it must be
replaced with the same rating.
OAE076017
OAE076018

7-55
7
Maintenance
Fuse switch
Always, place the fuse switch to the
ON position.
If you move the switch to the OFF
position, some items such as the
audio system and digital clock must
be reset and the smart key may not
work properly.
Information
If the fuse switch is OFF, “Turn on
FUSE SWITCH” message will appear.
• Always place the fuse switch in
the ON position while driving the
vehicle.
• Do not move the transportation
fuse switch repeatedly. The fuse
switch may be damaged.
Engine compartment panel
fuse replacement
1. Turn the vehicle off.
2. Turn all other switches off.
3. Remove the fuse panel cover by
pressing the tap and pulling up.
NOTICE
i
OAE076023
OAE076024
■Blade type fuse
■Cartridge type fuseOAE076019OLFH044149L

7-56
Maintenance
4. Check the removed fuse; replace it
if it is blown. To remove or insert
the fuse, use the fuse puller in the
engine compartment fuse panel.
5. Push in a new fuse of the same
rating, and make sure it fits tightly
in the clips. If it fits loosely, consult
an authorized HYUNDAI dealer.
After checking the fuse panel in
the engine compartment, securely
install the fuse panel cover. You
may hear a clicking sound if the
cover is securely latched. If it is
not securely latched, electrical
failure may occur from water con-
tact.
Main fuse (Plug-in hybrid vehicle)
The electronic system may not func-
tion correctly even when the fuses
located in the engine compartment
and instrument panel are not discon-
nected. In such case, the cause of
the problem may be disconnection of
the main fuse (BFT type), which is
located inside the positive battery
terminal (+) cap. Since the main fuse
is designed more intricately than
other parts, we recommend you visit
the nearest HYUNDAI dealer.
Information
After inspection always securely
install the battery cap. If it is not
securely latched, electrical failure may
occur from water contact.
Multi fuse
If the multi fuse is blown, it must be
removed as follows:
1. Turn the vehicle off.
2. Disconnect the negative battery
cable.
3. Remove the fuse panel cover by
pressing the tab and pulling it up.
4. Remove the nuts shown in the pic-
ture above.
5. Replace the fuse with a new one
of the same rating.
6. Reinstall in the reverse order of
removal.
Information
If the multi fuse is blown, consult an
authorized HYUNDAI dealer.
ii
NOTICE
OAE076021OAE076022

7-57
7
Maintenance
Fuse/relay panel description
Instrument panel fuse panel
Inside the fuse/relay box cover, you
can find the fuse/relay label describ-
ing fuse/relay names and ratings.
Information
Not all fuse panel descriptions in this
manual may be applicable to your
vehicle; the information is accurate at
the time of printing. When you inspect
the fuse box on your vehicle, refer to
the fuse box label.
i
OAE076053L
OAE076025

7-58
Maintenance
Instrument panel fuse panel
Fuse NameSymbolFuse RatingCircuit Protected
Module 5MODULE510A
Electro Chromic Mirror, A/V & Navigation Head Unit, Audio, Driver IMS Module,
A/T Shift Lever Indicator, A/C Control Module, Rear Seat Warmer Module,
Console Switch LH/RH, Head Lamp Leveling Device Actuator LH/RH, Vess Unit,
Front Air Ventilation Seat Control Module, Front Seat Warmer Control Module
Module 4MODULE410ALane Departure Warning Unit, Crash Pad Switch, AEB Unit,
Blind Spot Detection Radar LH/RH
Interior Lamp10AFront Vanity Lamp LH/RH, Room Lamp, Overhead Console Lamp,
Ignition Key ILL. & Door Warning Switch, Luggage Lamp
Air bag15ASRS Control Module
Ignition 1IG125APCB Block
ClusterCLUSTER10AInstrument Cluster
Module 3MODULE310ABCM, DCT Shift Lever, Stop Lamp Switch, Driver Door Module, Passenger Door Module
Memory 2MEMORY27.5AActive Air Flap LH/RH
Module 8MODULE810AActive Air Flap LH/RH, Electric Water Pump (HEV), VPD Sensor, BMS Control Module,
E/R Junction Block
Air bag IndicatorIND7.5AA/C Control Module, Instrument Cluster
Start7.5ABurglar Alarm Relay, Transaxle Range Switch

7-59
7
Maintenance
Fuse NameSymbolFuse RatingCircuit Protected
Module 2MODULE210AE/R Junction Block, Wireless Charger Unit, BCM, USB Charging Connector, Smart Key
Control Module, Audio, A/V & Navigation Head Unit, Power Outside Mirror Switch, AMP
Button Start 337.5AImmobilizer Module, Smart Key Control Module
Memory 1MEMORY110AWireless Charger Unit, Instrument Cluster, Driver Ims Module, Rain Sensor, BCM,
A/C Control Module, Auto Light & Photo Sensor, Driver Door Module,
Passenger Door Module, ICM Relay Box (Outside Mirror Folding/Unfolding Relay)
Multi MediaMULTI
MEDIA10AAudio, A/V & Navigation Head Unit
Electric Water
PumpEWP10AElectric Water Pump (HEV)
Electric
Power Steering 117.5AEPS Unit
Tailgate10ATail Gate Relay, Fuel Filler Switch, Fuel Filler Actuator
Button Start 1115ASmart Key Control Module
Module 7MODULE77.5AFront Seat Warmer Control Module, Front Air Ventilation Seat Control Module,
Rear Seat Warmer Module
Heated Steering15ABCM
Sunroof20ASunroof Motor
Power Window
Right-handRH25APower Window (RH) Relay, Power Window Main Switch, Passenger Power Window Switch
(LHD), Rear Power Window Switch (RH), Driver Safety Power Window Module (LHD),
Passenger Power Window Switch (RHD)
Instrument panel fuse panel