2019 Hyundai Ioniq Plug-in Hybrid Owner's Manual - RHD (UK, Australia)

7-37
7
Maintenance
4. Tyre ply composition andmaterial
The number of layers or plies of rub-
ber-coated fabric in the tyre. Tyre
manufacturers also must indicate the
materials in the tyre, which include
steel, nylon, polyester, and others.
The letter "R" means radial ply con-
struction; the letter "D“ means diago-
nal or bias ply construction; and the
letter "B" means belted-bias ply con-
struction.
5. Maximum permissible infla-tion pressure
This number is the greatest amount
of air pressure that should be put in
the tyre. Do not exceed the maximum
permissible inflation pressure. Refer
to the Tyre and Loading Information
label for recommended inflation
pressure.
6. Maximum load rating
This number indicates the maximum
load in kilograms and pounds that
can be carried by the tyre. When
replacing the tyres on the vehicle,
always use a tyre that has the same
load rating as the factory installed
tyre.
7. Uniform tyre quality grading
Quality grades can be found where
applicable on the tyre sidewall
between tread shoulder and maxi-
mum section width.
For example:
TREADWEAR 200
TRACTION AA
TEMPERATURE A
Tread wear
The tread wear grade is a compara-
tive rating based on the wear rate of
the tyre when tested under controlled
conditions on a specified govern-
ment test course. For example, a tyre
graded 150 would wear one-and-a-
half times (1½) as well on the gov-
ernment course as a tyre graded
100.
The relative performance of tyres
depends upon the actual conditions
of their use, however, and may
depart significantly from the norm
due to variations in driving habits,
service practices and differences in
road characteristics and climate.
These grades are molded on the
sidewalls of passenger vehicle tyres.
The tyres available as standard or
optional equipment on your vehicle
may vary with respect to grade.

7-38
Maintenance
Traction - AA, A, B & C
The traction grades, from highest to
lowest, are AA, A, B and C. Those
grades represent the tyre’s ability to
stop on wet pavement as measured
under controlled conditions on spec-
ified government test surfaces of
asphalt and concrete. A tyre marked
C may have poor traction perform-
ance.
Temperature - A, B & C
The temperature grades are A (the
highest), B and C representing the
tyre’s resistance to the generation of
heat and its ability to dissipate heat
when tested under controlled condi-
tions on a specified indoor laboratory
test wheel.
Sustained high temperature can
cause the material of the tyre to
degenerate and reduce tyre life, and
excessive temperature can lead to
sudden tyre failure. Grades B and A
represent higher levels of perform-
ance on the laboratory test wheel
than the minimum required by law.
The traction grade assigned to
this tyre is based on straight-
ahead braking traction tests,
and does not include accelera-
tion, cornering, hydroplaning,
or peak traction characteristics.
WARNING
The temperature grade for this
tyre is established for a tyre 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 tyre failure.
This may cause loss of vehicle
control resulting in an accident.
WARNING

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7
Maintenance
Low aspect ratio tyres
The aspect ratio is lower than 50 on
low aspect ratio tyres.
Because low aspect ratio tyres are
optimised for handling and braking,
their sidewall is a little stiffer than a
standard tyre. Also low aspect ratio
tyres 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
tyres.The side wall of a low aspect
ratio tyre is shorter than the
nor- mal one. Thus, the low-
aspect wheel and tyre are easily
dam- aged. Follow the below
instructions.
When driving on a rough road
or driving off a road, be care-
ful not to damage the tyres
and wheels. After driving,
inspect the tyres and wheels.
When passing over a pothole,
speed bump, manhole, or kerb
stone, drive the vehicle slowly
so as not to damage the tyres
and wheels.
When there is an impact on a
tyre, inspect the tyre condi-
tion. Or, we recommend that
you contact a HYUNDAI
authorised repairer.
(Continued)
CAUTION(Continued)
Inspect the tyre condition and
pressure every 1,800 miles
(3,000 km) to prevent a tyre
damage.
It is difficult to recognise a tyre
damage only with your eyes.
When there is a slight hint of a
tyre damage, check and
replace the tyre to prevent the
damage caused by air leakage.
When a tyre is damaged
whilst driving on a rough
road, off a road, or over obsta-
cles, such as a pothole, man-
hole, or kerb stone, your war-
ranty does not cover the dam-
age.
The tyre information is speci-
fied on the tyre side wall.

7-40
Maintenance
F
FU
U S
SE
E S
S
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 a HYUNDAI authorised
repairer.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 type Blown
Normal Blown
Normal Blown
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-
minium 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

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7
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 ofthe 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 a
HYUNDAI authorised repairer. 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.
OAE076017R
OAE076018

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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 inthe ON position whilst 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 fuseOAE076019ROLFH044149L

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7
Maintenance
4. Check the removed fuse; replace itif 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, we rec-
ommend that you consult a
HYUNDAI authorised repairer.
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 authorised repairer.
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, we recom-
mend that you consult a HYUNDAI
authorised repairer.
ii
NOTICE
OAE076021OAE076022

7-44
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
OAE076025R
OAE076053L