automatic Hyundai Sonata 2004 Workshop Manual

6- 4 DO-IT-YOURSELF MAINTENANCE
G020C01A-AATVehicle Interior
The following should be checked each time
when the vehicle is driven:
o Lights operation
o Windshield wiper operation
o Horn operation
o Defroster, heating system operation (and air
conditioning, if installed)
o Steering operation and condition
o Mirror condition and operation
o Turn signal operation
o Accelerator pedal operation
o Brake operation, including parking brake
o Manual transaxle operation, including clutch
operation
o Automatic transaxle operation, including
"Park" mechanism operation
o Seat control condition and operation
o Seat belt condition and operation
o Sunvisor operation
If you notice anything that does not operate
correctly or appears to be functioning incor-
rectly, inspect it carefully and seek assistance
from your Hyundai dealer if service is needed.
G020B01A-AATVehicle Exterior
The following should be checked monthly:
o Overall appearance and condition
o Air filter condition
o Wheel condition and wheel nut torque
o Exhaust system condition
o Light condition and operation
o Windshield glass condition
o Wiper blade condition
o Paint condition and body corrosion
o Fluid leaks
o Door and hood lock condition
o Tire pressure and condition (including spare
tire)
G020A01A-AATGENERAL CHECKS
Engine Compartment
The following should be checked regularly:
o Engine oil level and condition
o Transaxle fluid level and condition
o Brake fluid level
o Clutch fluid level
o Engine coolant level
o Windshield washer fluid level
o Accessory drive belt condition
o Engine Coolant hose condition
o Fluid leaks (on or below components)
o Power steering fluid level
o Battery condition

6- 6 DO-IT-YOURSELF MAINTENANCE
!
G040A03A-AATCHANGING THE OIL AND FILTERG030D01A-AATAdding Oil
If the oil level is close to or below the "L" mark,
add oil until it reaches the "F" mark. To add oil:
1. Remove the oil filler cap by turning it counter-
clockwise.
2. Add oil, then check the level again. Do not
overfill.
3. Replace the cap by turning it clockwise.
The distance between the "F" and "L" marks is
equal to about 1 quart of oil.The engine oil and filter should be changed at
those intervals specified in the maintenance
schedule in Section 5. If the car is being driven
in severe conditions, more frequent oil and filter
changes are required.
The procedure for changing the oil and filter is
as follows:
1. Park the car on level ground and set the
parking brake. Start the engine and let it
warm up until the needle on the coolant
temperature gauge moves above the lowest
mark. Turn the engine off and place the gear
selector lever in "P" (automatic) or reverse
gear (manual transaxle). Set the parking
brake.
G030D01Y
HSM394
DOHC V6DOHC V62. Open the hood and remove the engine oil
filler cap.
3. Slide underneath the car and loosen the
drain plug by turning it counterclockwise with
a wrench of the proper size. Be sure that a
drain pan is in position to catch the oil as it
drains out, then remove the drain plug.
WARNING:Be very careful when draining the engine oil
as it may be hot enough to burn you!
4. When the oil has stopped draining, replace
the drain plug using a new washer and
retighten by turning it clockwise.
Tightening torque is: 3.5 ~ 4.5 kgf.m

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
1.0~1.1 mm 1.0~1.1 mm

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- 13
!
G110C01Y-AATTransaxle Fluid CapacityThe fluid capacity of the automatic transaxle is
8.2 U.S. quarts.
WARNING:The transaxle fluid level should be checked
when the engine is at normal operating
temperature. This means that the engine,
radiator, exhaust system etc., are very hot
so you should exercise great care not to
burn yourself during this procedure.
G110D02L-AATTo Check the Transaxle Fluid Level
Park the car on level ground with the parking
brake engaged. When the transaxle fluid level
is checked, the transaxle fluid should be at
normal operating temperature and the engine
idling.While the engine is idling, apply the brakes and
move the gear selector lever from "P" to each
of its other positions — "R", "N", "D" — and then
return to "N" or "P". With the engine still idling:
1. Open the hood, being careful to keep hands,
long hair and clothing clear of any moving
parts.
2. Remove the transaxle dipstick, wipe it clean,
reinsert the dipstick as far as it will go, then
remove it again. Now check the fluid level on
the dipstick. It should be in the "HOT" range
on the dipstick.
3. If the transaxle fluid level is low, use a funnel
to add transaxle fluid through the dipstick
tube until the level reaches the "HOT" range.
Do not overfill.
C090A01YG110D02Y-1
DOHC V6

6- 14 DO-IT-YOURSELF MAINTENANCE
!
!
G120E02A-AATAdding Brake Fluid
G120D01A-AATTo Check the Fluid Level
The fluid level in the brake fluid reservoir should
be checked periodically. The level should be
between the "MIN" and "MAX" marks on the side
of the reservoir. If the level is at or below the
"MIN" mark, carefully add fluid to bring it up to
"MAX". Do not overfill.
G120C02A-AATRecommended Brake Fluid
Use only hydraulic brake fluid conforming to
DOT 3 or DOT 4 specifications in your braking
system. Follow the instructions printed on the
container.
G120B01A-AATChecking the Brake Fluid Level
G120A01A-AATCHECKING THE BRAKES
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 cooling 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.
CAUTION:Because brakes are essential to the safe
operation of the car, it is suggested that
they be checked and inspected by your
Hyundai dealer. The brakes should be
checked and inspected for wear at those
intervals specified in the vehicle mainte-
nance schedule in Section 5.
!
WARNING:Use caution when handling brake fluid. It
can damage your vision if it gets into your
eyes. It will also damage your vehicle's
paint if spilled on it and not removed imme-
diately.
!
HKSOM120
HEF-234
Fluid level should be within "HOT" range

6- 20 DO-IT-YOURSELF MAINTENANCE
!
!
G230A03A-AATPOWER STEERING FLUID LEVEL
G220B01A-AATChecking Engine Cooling Fan
The engine cooling fan should come on auto-
matically if the engine coolant temperature is
high.
G220A01A-AATCHECKING ELECTRIC COOLING
FANS
G220C01A-AATChecking Condenser Cooling Fan
The condenser cooling fan should come on
automatically whenever the air conditioning is in
operation.
G210B02A-AATChecking the Battery
Keep the battery clean. Any evidence of corro-
sion around the battery posts or terminals
should be removed using a solution of house-
hold baking soda and warm water. After the
battery terminals are dry, cover them with a light
coating of grease. While batteries are being charged (either by a
battery charger or by the vehicle's generator),
they produce explosive gases. Always ob-
serve these warnings to prevent injuries from
occurring:
o Charge batteries only in a well ventilated
area.
o Do not permit flames, sparks or smoking in
the area.
o Keep children away from the area.
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.
The power steering fluid level should be checked
regularly. To check the power steering fluid
level, be sure the engine is "OFF", then check
to make certain that the power steering fluid
level is between the "MAX" and "MIN" level
markings on the fluid reservoir.
NOTE:Grinding noise from the power steering
pump may be heard immediately after the
engine is started in extremely cold condi-
tions (below - 4°F). If the noise stops during
warm up, there is no abnormal function in
the system. It is due to a power steering
fluid characteristic in extremely cold condi-
tions.
G230A03Y
PROPOSITION 65 WARNING:Battery posts, terminals, and related acces-
sories contain lead and lead compounds,
chemicals known to the state of California
to cause cancer and reproductive harm.
Wash hands after handling.
!

INDEX 10- 3
E
Emission Control System ................................................................... 7-2
Engine
Before starting the engine .............................................................. 2-3
Compartment (2.4 DOHC) ............................................................ 6-2
Compartment (2.7 V6)................................................................... 6-3
Coolant........................................................................................... 6-7
Coolant temperature gauge .........................................................1-38
If the engine overheats .................................................................. 3-3
Number........................................................................................... 8-2
Oil .................................................................................................... 6-5
Starting........................................................................................... 2-4
Engine Exhaust Can Be Dangerous .................................................. 2-2
F
Fan Speed Control............................................................................1-66
Floor Mat Anchor ..............................................................................1-62
Fog Light
Front.............................................................................................1-42
Front Seats
Adjustable front seats ..................................................................1-10
Adjustable headrests...................................................................1-11
Adjusting seat forward and rearward ..........................................1-10
Adjusting seatback angle .............................................................1-11
Fuel
Capacity......................................................................................... 9-2
Gauge...........................................................................................1-38
Unleaded gasoline.......................................................................... 1-2
Fuel Filler Lid
Remote release............................................................................1-58
Fuses ................................................................................................6-18G
General Everyday Checks................................................................. 6-4
Glove Box..........................................................................................1-50
H
Hazard Warning System ..................................................................1-44
Headlight ..................................................................................1-41, 6-21
Heating and Cooling Control
Rotary and push Button type .......................................................1-65
Automatic type.............................................................................1-72
Heating and Ventilation
Air flow control..............................................................................1-68
Temperature control....................................................................1-66
High-Mounted Rear Stop Light .........................................................1-58
Homelink Mirror.................................................................................1-53
Hood Release....................................................................................1-59
Horn...................................................................................................1-60
I
Ignition Switch ...................................................................................... 2-3
Instrument Cluster and Indicator Lights...........................................1-34
Instrument Panel Light Control (Rheostat).......................................1-45
Interior Light.......................................................................................1-49
Intermittent Wiper..............................................................................1-43
J
Jump Starting...................................................................................... 3-2
Junction Box Description..................................................................6-29

INDEX 10- 5
T
Tachometer.......................................................................................1-39
Theft-Alarm system............................................................................ 1-6
Tires
Balancing........................................................................................ 8-4
Chains............................................................................................ 8-3
Changing a flat tire ......................................................................... 3-5
If you have a flat tire ....................................................................... 3-5
Information...................................................................................... 8-2
Pressure......................................................................................... 8-2
Replacement.................................................................................. 8-4
Rotation.......................................................................................... 8-3
Snow tires....................................................................................... 8-3
Spare tire........................................................................................ 3-4
Traction.......................................................................................... 8-4
Towing
A trailer (or vehicle)......................................................................2-16
Emergency...................................................................................3-11
If your car must be towed .............................................................. 3-9
Traction Control System ...................................................................2-11
Transaxle
Automatic........................................................................................ 2-7
Automatic transaxle fluid checking ..............................................6-12
Manual............................................................................................ 2-5
Manual transaxle oil checking.....................................................6-12
Trip Computer...................................................................................1-40
Trip Odometer...................................................................................1-39
Trunk Lid ...........................................................................................1-56V
Vehicle Identification Number............................................................. 8-2
W
Warning Lights...................................................................... 1-35 ~ 1-38
Windows
Manual............................................................................................ 1-9
Power............................................................................................. 1-9
Windshield Wiper and Washer ..........................................................1-42
Windshield Wiper Blades..................................................................6-11

Seoul KoreaPrinting: FEB. 20, 2004
Publication No.: A38O-EU42P
Printed in Korea
SERVICE STATION INFORMATION
FUEL:
UNLEADED gasoline only
Pump Octane Rating of 87 (Research Octane Number 91) or higher.
FUEL TANK CAPACITY
US.gal (Imp.gal., liter) 17.2 (14.3, 65)
TIRE PRESSURE:
See the label on the driver's side of the center pillar outer panel.
OTHER TIRE INFORMATION:
See pages 8-2 through 8-6
HOOD RELEASE:
Pull handle under left side of dash.
ENGINE OIL:
API grade SH, SG or SG/CD multigrade and fuel efficient oil. Use SAE
10W-30, 10W-40 or 10W-50 if normal temperatures are above -10°F
(-23°C). For other viscosity recommendations, see page 6-5 or 9-4.
MANUAL TRANSAXLE:
HYUNDAI GENUINE PARTS MTF 75W/90 (API GL-4) Oil level
should be up to filler-bolt hole in housing beside differential.
AUTOMATIC TRANSAXLE:
Apply the parking brake, with the engine running, shift the selector
lever through all ranges and return to “N” (Neutral) position. Then
check the level of fluid on the dipstick. Use only HYUNDAI GENU-
INE ATF available at your dealer or DIAMOND ATF SP-III or SK
ATF SP-III.
QUICK INDEX
o Car will not start ....................................................................... 3-2
o Flat tire ..................................................................................... 3-5
o Warning light/chime comes on .............................................. 1-35
o Engine overheats ...................................................................... 3-3
o Towing of your vehicle ............................................................. 3-9
o Starting the engine ................................................................... 2-3
o Driving tips for first 1,200 miles (2,000 km) .......................... 1-3
o Scheduled maintenance ............................................................ 5-4
o Reporting safety defects ........................................................... 8-7