Hyundai Sonata

Maintenance
20
7
Changing the coolant
Have coolant changed by an authorised
HYUNDAI dealer according to theMaintenance Schedule at the beginningof this section.
WARNING - Radiator cap
Do not remove the radiator cap when the engine and radiator are
hot. Scalding hot coolant and
steam may blow out under pres-
sure causing serious injury.
CAUTION
Put a thick cloth around the radiator cap before refilling the coolant in order to prevent the coolant fromoverflowing into engine parts such as the alternator.
WARNING - 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.
OYF079006

721
Maintenance
BRAKE/CLUTCH FLUID
Checking the brake/clutch fluid
level
Check the fluid level in the reservoir peri-
odically. 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 thoroughly to prevent
brake fluid contamination.
If the level is low, add fluid to the MAX
level. The level will fall with accumulated
mileage. This is a normal condition asso-
ciated with the wear of the brake linings.
If the fluid level is excessively low, have
the brake or clutch system checked by an
authorised HYUNDAI dealer.
Use only the specified brake fluid. (Refer
to “Recommended lubricants or capaci- ties” in section 8.)
Never mix different types of fluid.
WARNING - Brake fluid
When changing and adding brake
fluid, handle it carefully. Do not let it
come in contact with your eyes. Ifbrake fluid should come in contact
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 - Loss of brake fluid
In the event the brake system
requires frequent additions of fluid,
the vehicle should be inspected by
an authorised HYUNDAI dealer.
CAUTION
Do not allow brake fluid to contact the vehicle's body paint, as paintdamage will result. Brake fluid, which has been exposed to open air
for an extended time should never be used as its quality cannot beguaranteed. It should be disposedof properly. Don't put in the wrong
kind of fluid. A few drops of miner- al-based oil, such as engine oil, inyour brake system can damage brake system parts.
OYF079063R
OYF079007R
2.0L
2.4L

Maintenance
22
7
POWER STEERING FLUID (IF EQUIPPED)
Checking the power steering fluid
level
With the vehicle on level ground, check
the fluid level in the power steering reser-
voir periodically. The fluid should be
between MAX and MIN marks on the
side of the gauge at the normal tempera-
ture.
Before adding power steering fluid, thor- oughly clean the area around the reser-
voir cap to prevent power steering fluidcontamination.
If the level is low, add fluid to the MAX
level.
✽✽ NOTICE
Check that the fluid level is in the
"HOT" range on the gauge. If the fluid
is cold, check that it is in the "COLD"
range (if equipped).
In the event the power steering system requires frequent addition of fluid, the
vehicle should be inspected by an autho-
rised HYUNDAI dealer.
Use only the specified power steering fluid. (Refer to "Recommended lubricants
or capacities" in section 8.)
Checking the power steering hose
Check the connections for oil leaks, dam-
age and twists in the power steering
hose before driving.
CAUTION
To avoid damage to the power steering pump, do not operate the
vehicle for prolonged periods with a low power steering fluidlevel.
Never start the engine when the reservoir tank is empty.
When adding fluid, be careful that dirt does not get into the tank.
Too little fluid can result in increased steering effort and/ornoise from the power steering
system.
The use of the non-specified fluid could reduce the effectiveness ofthe power steering system andcause damage to it.
OYF079008

723
Maintenance
WASHER FLUID
Checking the washer fluid level
The reservoir is translucent so that you
can check the level with a quick visualinspection.
Check the fluid level in the washer fluid
reservoir and add fluid if necessary. 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.
WARNING - 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 flammable under cer-
tain circumstances. Do not allowsparks or flame to contact thewasher fluid or the washer fluid
reservoir. Damage to the vehicle
or occupants could occur.
Windscreen washer fluid is poi- sonous to humans and animals.
Do not drink and avoid contacting
windscreen washer fluid. Serious
injury or death could occur.
OYF079010

Maintenance
24
7
PARKING BRAKE
Checking the parking brake
Type A
Check whether the stroke is within spec-
ification 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 fair-
ly steep grade. If the stroke is more or
less than specified, have the parking
brake adjusted by an authorised
HYUNDAI dealer.
Stroke : 4~5 notch
Type B
Check the stroke of the parking brake by
counting the number of “clicks’’ heardwhilst fully applying it from the released
position. Also, the parking brake alone
should securely hold the vehicle on a fair-
ly steep grade. If the stroke is more or
less than specified, have the parking
brake adjusted by an authorised
HYUNDAI dealer.
Stroke : 5 “clicks’’ at a force of 20 kg (44 lbs, 196 N).
OYF059023ROYF059022/H
■Type A■Type B

725
Maintenance
AIR CLEANER
Filter replacement
It must be replaced when necessary, and
should not be washed.
You can clean the filter when inspecting the air cleaner element.
Clean the filter by using compressed air. 1. Loosen the air cleaner cover attaching
clips and open the cover. 2. Wipe the inside of the air cleaner.
3. Replace the air cleaner filter.
4. Lock the cover with the cover attaching
clips.
Replace the filter according to the
Maintenance Schedule.
If the vehicle is operated in extremely dusty or sandy areas, replace the
element more often than the usual recommended intervals. (Refer to “Maintenance under severe usage condi-tions” in this section.)
OYF079011ROYF079012ROYF079013

Maintenance
26
7
CAUTION
Do not drive with the air cleaner
removed; this will result in exces-
sive engine wear.
When removing the air cleaner fil- ter, be careful that dust or dirtdoes not enter the air intake, or
damage may result.
Use a HYUNDAI genuine part. Use of non-genuine parts could dam-age the air flow sensor.

727
Maintenance
CLIMATE CONTROL AIR FILTER (IF EQUIPPED)
Filter inspection
If the vehicle is operated in the severely air-polluted cities or on dusty rough
roads for a long period, it should beinspected more frequently and replaced
earlier. When you, the owner, replace the
climate control air filter, replace it per-
forming the following procedure, and be
careful to avoid damaging other compo-
nents. Replace the filter according to the main-
tenance schedule.
Filter replacement
1. Open the glove box and remove thesupport strap (1). 2. With the glove box open, remove the
stoppers by turning them counter-
clockwise on both sides.
OYF079015/HOYF079014R

Maintenance
28
7
3. Remove the climate control air filter
cover whilst pressing the lock on the
right of the cover. 4. Replace the climate control air filter.
5. Reassemble in the reverse order of
disassembly.
✽✽ NOTICE
When replacing the climate control air
filter install it properly. Otherwise, the
system may produce noise and the effec-
tiveness of the filter may be reduced.
OYF079046OYF079016R

729
Maintenance
WIPER BLADES
Blade inspection
✽✽ NOTICE
Commercial hot waxes applied by auto-
matic car washes have been known to
make the windscreen difficult to clean.
Contamination of either the windscreen
or the wiper blades with foreign matter
can reduce the effectiveness of the wind-
screen wipers. Common sources of con-
tamination are insects, tree sap, and hot
wax treatments used by some commer-
cial car washes. If the blades are not wip-
ing properly, clean both the window and
the blades with a good cleaner or mild
detergent, and rinse thoroughly with
clean water. Blade replacement When the wipers no longer clean ade-
quately, the blades may be worn or
cracked, and require replacement.
1JBA5122/HCAUTION
To prevent damage to the wiper
blades, do not use petrol, kerosene,
paint thinner, or other solvents onor near them.
CAUTION
To prevent damage to the wiper arms or other components, do not attempt to move the wipers manual-ly.
CAUTION
The use of a non-specified wiper
blade could result in wiper malfunc-tion and failure.