2003 Hyundai Sonata lock

DO-IT-YOURSELF MAINTENANCE 6- 9
!
4. Turn the radiator cap counterclockwise with-
out pressing down on it, until it stops. This
relieves any pressure remaining in the cool-
ing system. And remove the radiator cap by
pushing down and turning counterclock-
wise.
Now fill the radiator with clean demineralized
or distilled water. Continue to add clean
demineralized or distilled water in small quan-
tities until the fluid level stays up in the
radiator neck.
5. Start the engine, top off the radiator with
water and then add coolant to the reservoir
until the level is between "L" and "F".
6. Replace the radiator and reservoir caps and
check to be sure the drain cocks are fully
closed and not leaking.G060A02Y-AATSPARK PLUGS
Your engine was originally equipped with plati-
num-tipped spark plugs.
Platinum-tipped spark plugs will last longer than
conventional type spark plugs and can be
identified by blue lines on the ceramic shell.
NOTE:Do not clean or regap platinum-tipped spark
plugs.
WARNING:The cooling fan is controlled by engine
coolant temperature and may sometimes
operate even when the engine is not run-
ning. Use extreme caution when working
near the blades of the coolant fan so that
you are not injured by a rotating fan blade.
As the engine coolant temperature de-
creases, the fan will automatically shut off.
This is a normal condition.
HSM392G060B04Y-AAT
Replacing the Spark PlugsThe spark plugs should be changed at the
intervals specified in the vehicle maintenance
schedule in Section 5 or whenever engine
performance indicates they should be changed.
Symptoms that suggest poor spark plug perfor-
mance include engine misfiring under load, loss
of fuel economy, poor acceleration, etc. When
spark plugs are replaced, always use spark
plugs recommended by Hyundai. The use of
other spark plugs can result in loss of perfor-
mance, radio interference or engine damage.
NOTE:When replacing the spark plugs, always use
the genuine parts recommended.
Recommended Spark Plugs:
Type
RN10PYP4 (CHAMPION)
PGR5C-11 (NGK)
RC10PYB4 (CHAMPION)
PFR5N-11 (NGK)Remark
For 2.4L only
For 2.7L only
DOHC V6
0.1~1.1 mm 0.1~1.1 mm

6- 10 DO-IT-YOURSELF MAINTENANCE
!
G060C04Y-AATChanging the Spark Plugs
You will find it easier to change spark plugs if the
engine is cold. Always change one spark plug
at a time. This helps avoid getting the wires
mixed up.
1. Remove the center (2.4 L) cover on the
engine rocker cover.
NOTE:It is recommended that the spark plugs (For
2.7L Engines) should be changed by an
authorized Hyundai dealer.
2. Using a clean cloth, remove any dirt that has
accumulated around the base of the spark
plug so it cannot fall into the cylinder when the
spark plug is removed.3. To remove the spark plug cable, pull straight
up on the insulated connector, not the cable.
Pulling on the cable may damage the carbon
core conductor.
WARNING:It is recommended that the engine be cool
or cold when changing the spark plugs. If
the engine is hot, you could burn yourself
on the insulated connector, the spark plug
or the engine itself.
4. When preparing to remove the old spark
plug, guide the socket down over the spark
plug, being careful not to damage the ce-
ramic insulator.
5. To remove the old spark plug, turn the
wrench handle in a counterclockwise direc-
tion.6. To install the new spark plug, guide the
socket down over the spark plug, being
careful not to damage the ceramic insulator.
NOTE:Spark plugs should be tightened to speci-
fication. Over-tightening can damage the
threads in the aluminum cylinder head.
Also, leaving them too loose can cause the
spark plug to get very hot and possibly
result in damage to the engine.
7. Replace the cable by pushing the insulated
connector directly down onto the electrode.
Check to be sure it has snapped into place
and can’t fall off.
G060C01O
G060C02OG060C03O

6- 12 DO-IT-YOURSELF MAINTENANCE
!
G110B03A-AAT
Recommended Fluid
Your Hyundai automatic transaxle is specially
designed to operate with HYUNDAI GENUINE
ATF or DIAMOND ATF SP-III or SK ATF SP-III.
Damage caused by a nonspecified fluid is not
covered by your new vehicle limited warranty.
G110A01A-AAT
CHECKING THE TRANSAXLE FLUID
(AUTOMATIC)
Transaxle fluid in the automatic transaxle should
be checked at those intervals specified in the
vehicle maintenance schedule in Section 5.
G100B02A-AATTo Check the Manual Transaxle Fluid
Level
G100A03Y-AATCHECKING THE TRANSAXLE OIL
(MANUAL)
Transaxle lubricant in the manual transaxle
should be checked at those intervals specified
in the vehicle maintenance schedule in Section
5.
Recommended Oil
Use only HYUNDAI GENUINE PARTS MTF
75W/90 (API GL-4) or equivalent in the manual
transaxle.
Manual Transaxle Oil Capacity
The oil capacity of the manual transaxle is 2.2
U.S. quarts (2.1 liters).Park the car on level ground with the engine off.
1. Using a wrench of the correct size, loosen
the oil filler plug by turning it counterclock-
wise and remove it with your fingers.2. Use your finger or suitable tool to feel inside
the hole. The oil level should be at its bottom
edge. If it is not, check for leaks before
adding oil. To refill the transaxle or bring the
oil level up,add oil slowly until it reaches the
proper level. Do not overfill.
3. Replace the plug and washer, screw it in with
your fingers and then tighten securely with
the wrench.
WARNING:It is always better to check the transaxle oil
level when the engine is cool or cold. If the
engine is hot, you should exercise great
caution to avoid burning yourself on hot
engine or exhaust parts.
G100A03Y
SSA6100B
Filler plug
Drain plug

DO-IT-YOURSELF MAINTENANCE 6- 21
G250A01A-AATFOR MORE INFORMATION ABOUT
YOUR HYUNDAI
If you desire additional information about main-
taining and servicing your Hyundai, you may
purchase a factory Shop Manual at your Hyundai
dealer's parts department. This is the same
manual used by dealership technicians and
while it is highly technical it can be useful in
obtaining a better understanding of your car and
how it works.
G240A01A-AATPOWER STEERING HOSES
It is suggested that you check the power steer-
ing hose connections for fluid leakage at regular
intervals. The power steering hoses should be
replaced if there is severe surface cracking,
scuffing or worn spots. Deterioration of the hose
could cause premature failure. Recommended Fluid
Use PSF-3 type fluid
NOTE:Do not start the engine when the power
steering oil reservoir is empty.
G260A02A-AATREPLACING HEADLIGHT BULBS
Before attempting to replace a headlight bulb, be
sure the switch is turned to the "OFF" position.
The next paragraph shows how to reach head-
light bulbs so they may be changed. Be sure to
replace the burned-out bulb with one of the
same number and wattage rating.
!CAUTION:Keep the lamps out of contact with petro-
leum products such as oil, gasoline etc.
G270A03Y-AAT
Headlight Bulb
1. Allow the bulb to cool. Wear eye protection.
2. Always grasp the bulb by its plastic base,
avoid touching the glass.
G270A03Y
HEF-224
HEF-228
3. Turn the plastic cover counterclockwise
and remove it. High Beam
Low Beam
High BeamLow Beam
Turn signal Light

6- 30 DO-IT-YOURSELF MAINTENANCE
G200D02Y-GATInstrument panel junction boxDESCRIPTIONFUSE RATING PROTECTED COMPONENTS
RR HTD IND 10A Rear window defroster, Outside rear view mirror heater
HAZARD 10AHazard light, Turn signal lights
RR FOG 15A Rear fog light
A/CON 10AAir conditioning system
ETACS 10A ETACS, Keyless entry system, Door lock system
DR LOCK 15A Power door lock
P/SEAT 25A Power seat
T/LID OPEN 15A Remote trunk lid
STOP LP 15A Stop lights
H/LP 10A Head light
A/BAG IND 10AAir-bag
T/SIG 10ATurn signal lights
A/CON SW 10A Air conditioning system
ACC SOCKET 15A Power outlet
S/HTR 15ASeat heater
A/BAG 15A Air-bag
B/UP 10A Backup lights
CLUSTER 10A Cluster
START 10AEngine switch
SP1 15A Spare fuse
SP2 15A Spare fuse
P/SEAT (RH) 25A Power Seat
SP4 15A Spare fuse
D/CLOCK 10ADigtal clock
TAIL(LH) 10APosition lights, License plate lights, Tail lights
AUDIO 10A Audio
WIPER 20A Wiper
ROOM LP 10A Dome lights, Front door edge warning lights
TAIL(RH) 10APosition lights, License plate lights, Tail lights
C/LIGHTER 15ACigar lighter
EPS 10A
G200C02Y

8- 2 CONSUMER INFORMATION & REPORTING SAFETY DEFECTS
I030A03Y-AATRECOMMENDED INFLATION PRES-
SURES
I020A01A-AATTIRE INFORMATION
The tires supplied on your new Hyundai are
chosen to provide the best performance for
normal driving.
I010B01A-AATEngine NumberI010A01L-AATVEHICLE IDENTIFICATION
NUMBER (VIN)
The vehicle identification number (VIN) is the
number used in registering your car and in all
legal matters pertaining to its ownership, etc. It
can be found in three different places on your
car:
1. On the bulkhead between the engine and
passenger compartments.
2. On the left top side of the instrument panel
where it can be seen by looking down through
the windshield.
3. On the lower side of the center pillar outer
panel.The engine number is stamped on the engine
block as shown in the drawing.
The tire label located on the driver's door edge
gives the tire pressures recommended for your
vehicle.
TIRE SIZE
TIRE PRESSURE-COLD, kPa (PSI)
P205/65R15, P205/60R16
T125/80R15REAR
210(30)
420(60)FRONT
230(33)
420(60) LOAD UP TO
2 PERSONSMAX.VEHICLE
WEIGHT LIMIT
REAR
230(33)
420(60) FRONT
210(30)
420(60)
HEF-173AI010B01Y
I030A02Y

10- 2 INDEX
A
Air bag ...............................................................................................1-28
Air Cleaner Filter ...............................................................................6-11
Air Conditioning
Care..............................................................................................6-15
Operation............................................................................ 1-70, 6-16
Switch...........................................................................................1-70
Antenna ..........................................................................................1-100
Ashtray..............................................................................................1-46
Audio (H240, H260, H290) ........................................... 1-80, 1-85, 1-90
B
Battery..................................................................................... 2-14, 6-19
Brake
Anti-lock system ..........................................................................2-10
Checking the brakes ....................................................................6-14
Fluid ..............................................................................................6-14
Pedal clearance ...........................................................................6-17
Pedal free-play .............................................................................6-17
Practices......................................................................................2-12
Breaking-In your New Hyundai .......................................................... 1-3
Bulb Replacement .............................................................................6-21
C
Care of Cassette Tapes ...................................................................1-98
Cassette Tape Player Operation (H240, H290) .................... 1-83, 1-93
Catalytic Converter ............................................................................. 7-3
Child Restraint System .....................................................................1-22
Child-Protector Rear Door Lock ......................................................... 1-6
Cigarette Lighter ................................................................................1-45
Clock.................................................................................................1-45Clutch
Checking fluid ...............................................................................6-15
Pedal free-play .............................................................................6-17
Combination Light
Headlight flasher ..........................................................................1-42
Headlight switch ...........................................................................1-41
High-beam switch ........................................................................1-42
Lane change signal ......................................................................1-41
Turn signal operation ...................................................................1-41
Compact Disk Player Operation (H260, H290) ..................... 1-88, 1-95
Consumer Information ........................................................................ 8-5
Cooling Fans .....................................................................................6-20
Corrosion protection
Cleaning the interior ....................................................................... 4-4
Protecting your Hyundai from corrosion ....................................... 4-2
Washing and waxing ...................................................................... 4-3
Cruise Control ...................................................................................1-62
D
Defrosting/Defogging........................................................................1-71
Door
Door locks ...................................................................................... 1-4
Front door edge warning light ......................................................1-60
Locking, unlocking front door with a key ...................................... 1-4
Drink Holder ......................................................................................1-47
Drive Belts .........................................................................................6-18
Driving
Economical driving .......................................................................2-13
Smooth cornering .........................................................................2-13
Winter driving ...............................................................................2-13