Get Maintenance -> Engine coolant Guide for Hyundai Tucson SUV Third Generation (2016-2019)

ENGINE CCOOLANT

The high-pressure cooling system

has a reservoir filled with year-round

antifreeze coolant. The reservoir is

filled at the factory.

The coolant level should be filled

between MAX and MIN marks on the

side of the coolant reservoir when

the engine is cool.

Checking the engine coolant

level

Check the antifreeze protection and

coolant concentration level at least

once a year, at the beginning of the

winter season, and before traveling

to a colder climate.

If the coolant level is low, add enough

distilled (deionized) or soft water.

Bring the level to MAX, but do not

overfill.

If frequent additions are required, we

recommend that the system be

inspected by an authorized HYUNDAI

dealer.

NOTICE

• When the engine overheats from

low engine coolant, suddenly

adding engine coolant may cause

cracks in the engine. To prevent

damage, add engine coolant

slowly in small quantities.

OTL075070

• Do not drive with no engine

coolant. It may cause water pump

failure and engine seizure, etc.

7

OTL075008

Check the condition and connections

of all cooling system hoses and

heater hoses. Replace any swollen

or deteriorated hoses.

7-31

Maintenance

(Continued)

WARNING

• Turn the engine off and wait

until it cools down. Use

extreme care when removing

the radiator cap. Wrap a thick

towel around it, and turn it

counterclockwise slowly to

the first stop. Step back while

the pressure is released from

the cooling system.

Removing radiator

cap

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.

• Never attempt to remove the

radiator cap while 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.

When you are sure all the

pressure has been released,

press down on the cap, using

a thick towel, and continue

turning counterclockwise to

remove it.

(Continued)

• Even if the engine is not oper-

ating, do not remove the radia-

tor cap or the drain plug while

the engine and radiator are

hot. Hot coolant and steam

may still blow out under pres-

sure, causing serious injury.

The electric motor (cooling fan)

may operate until you discon-

nect the negative battery cable.

7-32

(Continued)

Recommended engine coolant

NOTICE

• 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.

■ Engine room rear view

Make sure the coolant cap is prop-

erly closed after refill of coolant.

Otherwise the engine could be over-

heated while driving.

■ Engine room front view

• The engine in your vehicle has alu-

minum engine parts and must be

protected by an ethylene-glycol-

based coolant to prevent corrosion

and freezing.

OTLE075010

• DO NOT USE alcohol or methanol

coolant or mix them with the spec-

ified coolant.

2. Make sure that the tiny protru-

sions inside the coolant cap

should be securely interlocked.

• Do not use a solution that contains

more than 60% antifreeze or less

than 35% antifreeze, which would

reduce the effectiveness of the solu-

tion.

OTL075062

1. Check if the radiator cap label is

straight In front.

7

(Continued)

7-33

Maintenance

For mixture percentage, refer to the

following table.

Changing the engine coolant

We recommend that the coolant be

replaced by an authorized HYUNDAI

dealer.

Mixture Percentage

(volume)

Ambient

Temperature

Antifreeze

Water

65

NOTICE

-15°C (5°F)

-25°C (-13°F)

-35°C (-31°F)

-45°C (-49°F)

35

40

50

60

Put a thick cloth or fabric around

the radiator cap before refilling

the coolant in order to prevent the

coolant from overflowing into engine

parts such as generator.

50

40

i

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.

WARNING

• Do not use engine coolant or

antifreeze in the washer fluid

reservoir.

• Engine coolant can severely

obscure visibility when sprayed

on the windshield and may

cause loss of vehicle control or

damage to paint and body trim.

7-34

Maintenance -> Engine coolant for Your Hyundai Tucson SUV Third Generation (2016-2019)

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