Hyundai Tucson 2020 Owner's Manual - RHD (UK, Australia)

7-35
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 concentration level at least
once a year, at the beginning of the
winter season, and before travelling
to a colder climate.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 MAX and MIN marks on the
side of the coolant reservoir when
the engine is cool.
If the coolant level is low, add enough
distilled (deionized) water.
Bring the level to MAX, but do not
overfill.
If frequent additions are required, we
recommend that the system be
inspected by an authorised
HYUNDAI dealer.
When the engine overheats
from low engine coolant, sud-
denly adding engine coolant
may cause cracks in the
engine. To prevent damage,
add engine coolant slowly in
small quantities.
Do not drive without engine
coolant. It may cause water
pump failure and engine
seizure, etc.
CAUTION
OTL075070
OTL078008
Removing coolant
cap
Never attempt to remove the
coolant cap whilst the engine
is operating or hot. Doing so
might lead to cooling system
and engine damage and could
result in serious personal
injury from escaping hot
coolant or steam.
WARNING

7-36
Maintenance
Turn the engine off and wait
until it cools down. Use
extreme care when removing
the coolant cap. Wrap a thick
towel around it, and turn it
anticlockwise 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 anticlockwise to
remove it.
Even if the engine is not oper-
ating, do not remove the
coolant cap or the drain plug
whilst the engine and radiator
are hot. Hot coolant and
steam may still blow out
under pressure, causing seri-
ous injury.
The electric motor
(cooling fan) is con-
trolled by engine
coolant temperature,
refrigerant pressure
and vehicle speed. It may some-
times operate even when the
engine is not running. Use
extreme caution when working
near the blades of the cooling
fan so that you are not injured
by a rotating fan blades. As the
engine coolant temperature
decreases, the electric motor
will automatically shut off. This
is a normal condition.
The electric motor (cooling fan)
may operate until you discon-
nect the negative battery cable.
WARNING
Make sure the coolant cap is
properly closed after refilling
coolant. Otherwise the engine
could be overheated whilst
driving
1. Check if the coolant cap label
is straight In front.
WARNING
OTL075062
■Engine compartment front view

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Maintenance
Recommended engine coolant
When adding coolant, use only
deionized water or soft water for
your vehicle and never mix hard
water in the coolant filled at the fac-
tory. An improper coolant mixture
can result in serious malfunction or
engine damage.
The engine in your vehicle has alu-
minium engine parts and must be
protected by a phosphate-based
ethylene glycol coolant to prevent
corrosion and freezing.
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.For mixture 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.
i2. Make sure the tiny protru-
sions inside the coolant cap
are securely interlocked.
OTL078063
■Engine compartment rear view
7
Ambient
TemperatureMixture 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

7-38
Maintenance
Changing the coolant
We recommend that the coolant be
replaced by an authorised HYUNDAI
dealer.
Put a thick cloth or fabric
around the coolant cap before
refilling the coolant in order to
prevent the coolant from over-
flowing into engine parts such
as generator.
CAUTION
Coolant
Do not use radiator coolant or
antifreeze in the washer fluid
reservoir.
Radiator coolant can severely
obscure visibility when
sprayed on the windscreen
and may cause loss of vehicle
control or damage to paint
and body trim.
WARNING

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Maintenance
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Checking the brake/clutch
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/clutch fluid, clean
the area around the reservoir cap
thoroughly to prevent brake/clutch
fluid contamination.
If the level is low, add fluid to the
MAX level. The level will fall with
accumulated mileage. This is a nor-
mal condition associated with the
wear of the brake linings.If the fluid level is excessively low, we
recommend that the system be
checked by an authorised HYUNDAI
dealer.
Information
Use only the specified brake/clutch
fluid. (Refer to “Recommended lubri-
cants and capacities” in chapter 8.)
Never mix different types of fluid.
Before removing the brake/clutch
filler cap, read the warning on the
cap.
NOTICE
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OTLE078009R
In the event the brake/clutch
system requires frequent addi-
tions of fluid, we recommend
that the system be inspected by
an authorised HYUNDAI dealer.
WARNING
Clean the filler cap before
removing. Use only DOT3 or
DOT4 brake/clutch fluid from a
sealed container.
WARNING

7-40
Maintenance
Checking the washer fluid
level
The reservoir is translucent so that
you can check the level with a quick
visual inspection.
Check the fluid level in the washer
fluid reservoir and add fluid if neces-
sary.
Plain water may be used if washer
fluid is not available.
However, use washer solvent with
antifreeze characteristics in cold cli-
mates to prevent freezing. When changing and adding
brake/clutch fluid, handle it
carefully. Do not let it come into
contact with your eyes. If brake/
clutch fluid should come in con-
tact with your eyes, immediately
flush them with a large quantity
of fresh tap water. Have your
eyes examined by a doctor as
soon as possible.
WARNING
Do not allow brake/clutch fluid
to contact the vehicle's body
paint, as paint damage will
result. Brake/clutch fluid, which
has been exposed to open air
for an extended time should
never be used as its quality can-
not be guaranteed. It should be
disposed of properly. Don't add
the wrong kind of fluid.
A few drops of mineral-based
oil, such as engine oil, in your
brake/clutch system can dam-
age the brake/clutch system
parts.
CAUTION
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OTLE078105

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Maintenance
Checking the parking brake
Type A
Check whether the stroke is within
specification when the parking brake
pedal is depressed with 20 kg (44 lb,
196N) of force. Also, the parking
brake alone should securely hold the
vehicle on a fairly steep grade. If the
stroke is more or less than specified,
we recommend that the system be
serviced by an authorised HYUNDAI
dealer.
Stroke : 3 notch
Type B
Check the stroke of the parking
brake by counting the number of
“clicks’’ heard whilst fully applying it
from the released position. Also, the
parking brake alone should securely
hold the vehicle on a fairly steep
grade. If the stroke is more or less
than specified, we recommend that
the system be serviced by an autho-
rised HYUNDAI dealer.
Stroke : 5~6 “clicks’’ at a force of
20 kg (44 lbs, 196 N).
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OTL055012R
OTLE055011R
Coolant
Do not use radiator coolant or
antifreeze in the washer fluid
reservoir.
Radiator coolant can severely
obscure visibility when
sprayed on the windscreen
and may cause loss of vehicle
control or damage to paint
and body trim.
Windscreen Washer fluid
agents contain some amounts
of alcohol and can be flamma-
ble under certain circum-
stances. Do not allow sparks
or flames to contact the wash-
er fluid or the washer fluid
reservoir. Damage to the vehi-
cle or occupants could occur.
Windscreen washer fluid is
poisonous to humans and
animals. Do not drink and
avoid contact with wind-
screen washer fluid. Serious
injury or death could occur.
WARNING

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Draining water from fuel filter
The fuel filter in the diesel engine
operates the critical function of sepa-
rating water from the fuels and accu-
mulating the water in its bottom.
When enough water is accumulated
inside the fuel filter, the warning light
illuminates with the ignition switch in
the ON position.
In this case, we recommend you to
have the system checked by an
authorised HYUNDAI dealer.
Fuel filter cartridge replace-
ment
Information
When replacing the fuel filter car-
tridge, we recommend that you use
parts for replacement from an autho-
rised HYUNDAI dealer.
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7-42
Maintenance
When the accumulated water is
not drained at a proper timing,
water may permeate in the fuel
filter, damaging the major vehi-
cle components, such as the
fuel system.
CAUTIONOTL075014

7-43
7
Maintenance
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Filter replacement
The air cleaner filter can be cleaned
for inspection using compressed air.
Do not attempt to wash or to rinse it,
as water will damage the filter.
If soiled, the air cleaner filter must be
replaced.1.Pull down the air cleaner filter
cover.
2. Wipe the inside of the air cleaner.3. Pull down the levers to the
UNLOCK position.
OTL075013
OTL075015OTL075016

7-44
Maintenance
4. Replace the air cleaner filter. 5. Pull up the lever(1) to the LOCK
position.
6. Rise up the cover (2) until the
hooks on the cover are securely
fastened into the latches (3).
7. Check if 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
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OTL075017OTL075018