2018 Hyundai Ioniq Hybrid Engine

7-32
Maintenance
1. Loosen the air cleaner cover
attaching clips and open the cover.2. Wipe the inside of the air cleaner.
3. Replace the air cleaner filter.
4. Lock the cover with the cover
attaching clips.
5. Check that the cover is firmly
installed.
Information
If the vehicle is operated in extremely
dusty or sandy areas, replace the ele-
ment more often than the usual rec-
ommended intervals (Refer to
“Maintenance Under Severe Usage
Conditions” in this chapter).
• Do not drive with the air cleaner
filter removed. This will result in
excessive engine wear.
• When removing the air cleaner
filter, be careful that dust or dirt
does not enter the air intake, or
damage may result.
• Use HYUNDAI genuine parts.
Use of non-genuine parts could
damage the air flow sensor.
NOTICE
i
OAEPH076011OAE076012

7-38
Maintenance
BATTERY (12 VOLT, PLUG-IN HYBRID VEHICLE)
• When you do not use the vehicle
for a long time in a low tempera-
ture area, disconnect the battery
and keep it indoors.
• Always charge the battery fully
to prevent battery case damage
in low temperature areas.
NOTICE
To prevent SERIOUS INJURY or
DEATH to you or bystanders,
always follow these precautions
when working near or handling
the battery:
Always read and follow
instructions carefully
when handling a battery.
Wear eye protection
designed to protect the
eyes from acid splashes.
Keep all flames, sparks,
or smoking materials
away from the battery.
Hydrogen is always pres-
ent in battery cells, is
highly combustible, and
may explode if ignited.
Keep batteries out of
reach of children.
(Continued)
WARNING (Continued)
Batteries contain sulfu-
ric acid which is highly
corrosive. Do not allow
acid to contact your
eyes, skin or clothing.
If acid gets into your eyes, flush
your eyes with clean water for at
least 15 minutes and get imme-
diate medical attention. If acid
gets on your skin, thoroughly
wash the area. If you feel pain or
a burning sensation, get med-
ical attention immediately.
•When lifting a plastic-cased
battery, excessive pressure
on the case may cause battery
acid to leak. Lift with a battery
carrier or with your hands on
opposite corners.
•Do not attempt to jump start
your vehicle if your battery is
frozen.
(Continued)
(Continued)
•NEVER attempt to recharge
the battery when the vehicle’s
battery cables are connected
to the battery.
•The electrical ignition switch
works with high voltage.
NEVER touch these compo-
nents with the engine running
or when the Engine Start/Stop
button is in the ON position.

7-40
Maintenance
Battery capacity label
❈The actual battery label in the vehicle
may differ from the illustration.
1. AGM60L-DIN : The HYUNDAI
model name of battery
2. 12V : The nominal voltage
3. 60Ah(20HR) : The nominal capacity
(in Ampere hours)
4. 100RC : The nominal reserve
capacity (in min.)
5. 640CCA : The cold-test current in
amperes by SAE
6. 512A : The cold-test current in
amperes by EN
Battery recharging
By battery charger
Your vehicle has a maintenance-free,
calcium-based battery.
• If the battery becomes discharged
over a short time (because, for
example, the headlamps or interior
lights were left on while the vehicle
was not in use), recharge it by slow
charging (trickle) for 10 hours.
• If the battery gradually discharges
because of high electrical load
while the vehicle is being used,
recharge it at 20-30A for two hours.Always follow these instructions
when recharging your vehicle’s
battery to avoid the risk of SERI-
OUS INJURY or DEATH from
explosions or acid burns:
•Before performing mainte-
nance or recharging the bat-
tery, turn off all accessories
and place the Engine Start/
Stop button to the OFF posi-
tion.
•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.
(Continued)
WARNING
OLMB073072 ■Example

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

7-62
Maintenance
Engine compartment 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 panel in your vehicle, refer to
the fuse panel label.
i
OAE076026
OAE076069L