Page 458 of 542
7-28
Maintenance
✽✽NOTICE
Use only the specified engine oil
(refer to “Recommended Lubricants
and Capacities” in chapter 8).
Checking the engine oil and filter
Have engine oil and filter changed by
an authorized HYUNDAI dealeraccording to the MaintenanceSchedule at the beginning of this
chapter.
OLMB073097
OLMB073106
■ NU 2.0L
■Theta II 2.4L
CALIFORNIA PROPOSITION 65
WARNING
Engine oil contains chemicals
known to the State of California
to cause cancer, birth defects
and reproductive harm. Used
engine oil may cause irritationor cancer of the skin if left in
contact with the skin for pro-
longed periods of time. Always
protect your skin by washing
your hands thoroughly withsoap and warm water as soon
as possible after handling usedoil.
WARNING
Page 459 of 542

7-29
7
Maintenance
EENN GGIINN EE CC OO OO LLAA NN TT
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, atthe beginning of the winter season
and before traveling to a colder cli-
mate.Checking the engine coolant
level
Never remove the
radiator cap or the drain plug while theengine and radiator
are hot. Hot coolant
and steam may blow out under
pressure, causing serious
injury.
(Continued)
WARNING
(Continued)
Turn the engine off and wait
until the engine cools down.
Use extreme care when remov-
ing 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. When you aresure all the pressure has been
released, press down on the
cap, using a thick towel, and
continue turning counterclock-
wise to remove it.
OLMB073006
Page 460 of 542

7-30
Maintenance
The electric motor for the cooling fan
is controlled by engine coolant tem-
perature, refrigerant pressure and
vehicle speed. As the engine coolant
temperature decreases, the electric
motor will automatically shut off. This
is a normal condition. If your vehicle
is equipped with GDI, the electric
motor for the cooling fan may begin
to operate at any time and continue
to operate until you disconnect the
negative battery cable.Check the condition and connectionsof all cooling system hoses and
heater hoses. Replace any swollen
or deteriorated hoses.
The coolant level should be filled
between the F and the L marks on
the side of the coolant reservoirwhen the engine is cool.
If the coolant level is low, add enough
distilled (deionized) water to bring
the level to the F mark, but do not
overfill. If frequent additions are
required, we recommend that you
see an authorized HYUNDAI dealer
for a cooling system inspection.
Recommended engine coolant
When adding coolant, use only
deionized 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
engine damage.
The engine in your vehicle has alu- minum engine parts and must be
protected by an ethylene-glycol-
based coolant to prevent corrosionand 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 thesolution.
OLMB073005
The electric motor for
the cooling fan may
continue to operate
or start up when theengine is not running
and can cause serious injury.
Keep hands, clothing and tools
away from the rotating fan
blades of the cooling fan.
WARNING
Page 461 of 542

7-31
7
Maintenance
For mixing percentage, refer to the
following table:
✽✽NOTICE
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 tempera-
ture ranges of -31°F and higher.
Changing engine coolant
Have coolant changed by an author-
ized HYUNDAI dealer according tothe Maintenance Schedule at the
beginning of this chapter.
Ambient
Temperature Mixture Percentage
(volume)
Antifreeze Water
5°F (-15°C) 35 65
-13°F (-25°C) 40 60
-31°F (-35°C) 50 50
-49°F (-45°C) 60 40
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 resulting in an acci-dent.
Engine coolant may also
cause damage to paint and
body trim.
WARNING
To prevent damage to engine
parts, put a thick towel around
the radiator cap before refilling
the coolant to prevent the
coolant from overflowing into
engine parts, such as the gener-
ator.
CAUTION
Page 463 of 542
7-33
7
Maintenance
✽✽NOTICE
Use only the specified brake fluid
(refer to “Recommended Lubricants
and Capacities” in chapter 8).
Do not allow brake fluid to
contact the vehicle’s body
paint, as paint damage willresult.
Brake fluid, which has been
exposed to open air for an
extended time should NEVERbe used as its quality cannot
be guaranteed. It should be
disposed of properly.
Do use the wrong kind of
brake fluid. A few drops of
mineral based oil, such as
engine oil, in your brake sys-
tem can damage brake sys-
tem parts.
CAUTION
Page 464 of 542
7-34
Maintenance
WWAASSHH EERR FF LLUU IIDD
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
washer fluid is not available.
However, use washer solvent with
antifreeze characteristics in cold cli-
mates to prevent freezing.
OLMB073008
To prevent serious injury or
death, take the following safetyprecautions when using washerfluid:
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 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 containalcohol and can be flamma-
ble.
Do not drink washer fluid and
avoid contact with skin.
Washer fluid is poisonous tohumans and animals.
Keep washer fluid away from
children and animals.
CAUTION
Page 467 of 542
7-37
7
Maintenance
Replace the filter according to the Maintenance Schedule
✽✽NOTICE
If the vehicle is operated in extreme-
ly dusty or sandy areas, replace the
element more often than the usual
recommended intervals (refer to
“Maintenance Under Severe Usage
Conditions” in this chapter).Do not drive with the air clean-
er filter removed. This will
result in excessive engine
wear.
When removing the air clean-
er 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.
CAUTION
Page 474 of 542

7-44
Maintenance
For best battery service
Keep the battery securely mount-ed.
Keep the battery top clean and dry.
Keep the terminals and connec- tions clean, tight, and coated with
petroleum jelly or terminal grease.
Rinse any spilled acid from the bat- tery immediately with a solution of
water and baking soda.
When you do not use the vehi-
cle for a long time in a low
temperature area, disconnect
the battery and keep it
indoors.
Always charge the battery
fully to prevent battery case
damage in low temperatureareas.
CAUTION
CALIFORNIA PROPOSITION 65
WARNING
Battery posts, terminals, and related accessories containlead and lead compounds,
chemicals known to the State of
California to cause cancer, birth
defects and reproductive harm.Batteries also contain other
chemicals known to the State of
California to cause cancer.
Wash hands after handling.
WARNING
OLMB073025
(Continued)
NEVER attempt to recharge
the battery when the vehicle’s
battery cables are connected
to the battery.
The electrical ignition system
works with high voltage.
NEVER touch these compo-nents with the engine running
or when the ignition switch isin the ON position.