2019 Hyundai Ioniq Electric Owner's Manual - RHD (UK, Australia)

7-9
7
Maintenance
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The high-pressure cooling system
has a reservoir filled with year-round
antifreeze coolant. The reservoir is
filled at the factory.
Check the antifreeze protection and
coolant level at least once a year, at
the beginning of the winter season
and before travelling to a colder cli-
mate.Checking the coolant level
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 and the MIN
marks on the side of the coolant
reservoir when the parts in the motor
compartment is cool.
If the coolant level is low, add enough
distilled (deionized) water to bring
the level to the MAX mark, but do not
overfill. If frequent additions are
required, we recommend that you
see a HYUNDAI authorised repairer
for a cooling system inspection.
OAEE076002L

7-10
MaintenanceThe electric motor for the cooling fan
is controlled by coolant temperature,
refrigerant pressure and vehicle
speed. As the coolant temperature
decreases, the electric motor will
automatically shut off. This is a nor-
mal condition.
Never remove the
coolant cap or the
drain plug whilst the
radiator is hot. Hot
coolant and steam
may blow out under pressure,
causing serious injury.
(Continued)
WARNING
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The electric motor for
the cooling fan may
continue to operate
or start up when the
vehicle is not operat-
ing and can cause serious
injury.
Keep hands, clothing and tools
away from the rotating fan blades
of the cooling fan.
WARNING (Continued)
Turn the vehicle off and wait
until the parts in the motor com-
partment cools down. Use
extreme care when removing
the coolant cap. Wrap a thick
towel around it, and turn it
counterclockwise slowly to the
first stop. Step back whilst the
pressure is released from the
cooling system. When you are
sure all the pressure has been
released, press down on the
cap, using a thick towel, and
continue turning counterclock-
wise to remove it.

7-11
7
Maintenance
Recommended coolant
When adding coolant, use onlydeionized water, distilled water or
soft water for your vehicle and
never mix hard water in the coolant
filled at the factory.
An improper coolant mixture can result in severe malfunction or
electric vehicle system damage.
Do not use alcohol or methanol coolant or mix them with the spec-
ified coolant.
Do not use a solution that contains more than 60% antifreeze or less
than 35% antifreeze, which would
reduce the effectiveness of the
solution.
Make sure the coolant cap is
properly closed after refilling
coolant.
1. Check if the coolant cap label
is straight In front.
(Continued)WARNING
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■Motor compartment front view
(Continued)
2. Make sure that the tiny pro-
trusions inside the coolant
cap is securely interlocked.
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■Motor compartment rear view

7-12
Maintenance
For mixing percentage, refer to the
following table:
Information
If in doubt about the mix ratio, a 50%
water and 50% antifreeze mix is the
easiest to mix together as it will be the
same quantity of each. It is suitable to
use for most temperature ranges of
-35°C (-31°F) and higher.
Changing coolant
We recommend that coolant be
changed by a HYUNDAI authorised
repairer according to the
Maintenance Schedule.
To prevent damage to parts in the
motor compartment, put a thick
towel around the coolant cap
before refilling the coolant to pre-
vent the coolant from overflowing
into parts in the motor compart-
ment.
NOTICE
i
Do not use coolant or antifreeze
in the washer fluid reservoir.
Coolant can severely obscure
visibility when sprayed on the
windscreen and may cause loss
of vehicle control resulting in an
accident.
Coolant may also cause dam-
age to paint and body trim.
WARNING
Ambient
Temperature Mixture Percentage
(volume)
Antifreeze Water
-15°C (5°F) 35 65
-25°C (-13°F) 40 60
-35°C (-31°F) 50 50
-45°C (-49°F) 60 40

7-13
7
Maintenance
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Checking the brake fluid level
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 thor-
oughly to prevent brake fluid contam-
ination. If the level is low, add the specified
brake fluid to the MAX level. The level
will fall with accumulated mileage.
This is a normal condition associated
with the wear of the brake linings. If
the fluid level is excessively low, we
recommend that the brake system
be checked by a HYUNDAI autho-
rised repairer.
Do not allow brake fluid to con-
tact 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 dis-
posed of properly.
Do not use the wrong kind of brake fluid. A few drops of miner-
al based oil, such as engine oil, in
your brake system can damage
brake system parts.
Use only the specified brake fluid
(Refer to “Recommended Lubricants
and Capacities” in chapter 8).
NOTICE
OAEE076003If the brake system requires fre-
quent additions of fluid this
could indicate a leak in the
brake system. We recommend
that the vehicle be inspected by
a HYUNDAI authorised repairer.
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.
WARNING

7-14
Maintenance
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Checking the washer fluid
level
Check the fluid level in the washer
fluid reservoir and add fluid if neces-
sary. Plain water may be used if wash-
er fluid is not available. However, use
washer solvent with antifreeze char-
acteristics in cold climates to prevent
freezing.
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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 severe-
ly obscure visibility when
sprayed on the windscreen
and may cause loss of vehicle
control resulting in an acci-
dent 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 flamma-
ble.
Do not drink washer fluid and
avoid contact with skin.
Washer fluid is poisonous to
humans and animals.
Keep washer fluid away from
children and animals.
WARNING

7-15
7
Maintenance
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Filter inspection
The climate control air filter should be
replaced according to the Maintenance
Schedule.
If the vehicle is operated in
severely air-polluted cities or on
dusty rough roads for a long period,
it should be inspected more fre-
quently and replaced earlier. When
you replace the climate control air fil-
ter, replace it performing the follow-
ing procedure, and be careful to
avoid damaging other components.
1. With the glove box open, removethe stoppers on both sides. 2. Remove the support rod (1).
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7-16
Maintenance
3. Press and hold the lock (1) on both sides of the cover.
4. Pull out (2) the cover. 4. Replace the climate control air filter.
5. Reassemble in the reverse order
of disassembly. Install a new climate control air fil-
ter in the correct direction with the
arrow symbol (
↓ ↓) facing down-
wards. Otherwise, the climate con-
trol effects may decrease, possi-
bly with a noise.
NOTICE
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