2003 Hyundai Sonata service

5- 8 VEHICLE MAINTENANCE REQUIREMENTS
F070M01Y-AATo Steering Gear Box, Linkage & Boots/
Lower Arm Ball Joint, Upper Arm Ball
Joint
With the vehicle stopped and engine off, check
for excessive free-play in the steering wheel.
Check the linkage for bends or damage. Check
the dust boots and ball joints for deterioration,
cracks, or damage. Replace any damaged
parts.
F070G02A-AATo Brake Fluid
Check brake fluid level in the brake fluid reser-
voir. The level should be between "MIN" and
"MAX" marks on the side of the reservoir. Use
only hydraulic brake fluid conforming to DOT 3
or DOT 4.
F070D01A-AATo Manual transaxle oil
Inspect the manual transaxle oil according to
the maintenance schedule.
NOTE:If the oil level is low, check for possible leaks
before adding oil. Do not overfill.
F070F01A-AATo Brake Hoses and Lines
Visually check for proper installation, chafing,
cracks, deterioration and any leakage. Replace
any deteriorated or damaged parts immedi-
ately.
F070E04A-AATo Automatic Transaxle Fluid and Filter
The fluid level should be in the "HOT" range of
the dipstick, after the engine and transaxle are
at normal operating temperature. Check the
automatic transaxle fluid level with the engine
running and the transaxle in neutral, with the
parking brake properly applied. Use Genuine
Hyundai ATF or DIAMOND ATF SP-III or SK
ATF SP-III when adding or changing fluid.
F070K01A-AATo Exhaust Pipe and Muffler
Visually inspect the exhaust pipes, muffler and
hangers for cracks, deterioration, or damage.
Start the engine and listen carefully for any
exhaust gas leakage. Tighten connections or
replace parts as necessary.
F070J01A-AAT
o Brake Pads, Calipers and Rotors
Check the pads for excessive wear, discs for
run out and wear, and calipers for fluid leakage.
F070H01A-AAT
o Rear Brake Drums and Linings/
Parking Brake
Check the rear brake drums and linings for
scoring, burning, leaking fluid, broken parts,
and excessive wear. Inspect the parking brake
system including the parking brake lever and
cables. For detailed service procedures, refer
to the Shop Manual.
F070L01A-AAT
o Suspension Mounting Bolts
Check the suspension connections for loose-
ness or damage. Retighten to the specified
torque.

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

DO-IT-YOURSELF MAINTENANCE 6- 5
G030A01A-AATCHECKING THE ENGINE OIL
Engine oil is essential to the performance and
service of the engine. It is suggested that you
check the oil level at least once a week in normal
use and more often if you are on a trip or driving
in severe conditions.
G030C02A-AATTo Check the Oil LevelG030B01A-AATRecommended Oil
SH, SG or SG/CD (API) multi-grade and fuel
efficient oil is recommended.Before checking the oil, warm up the engine to
the normal operating temperature and be sure
your car is parked on level ground. Turn the
engine off.
Wait five minutes, then remove the dipstick,
wipe it off, fully reinsert the dipstick and withdraw
it again. Then note the highest level the oil has
reached on the dipstick. It should be between
the upper ("F") and lower ("L") range.
G030A02A
G030C01Y

DO-IT-YOURSELF MAINTENANCE 6- 7
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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
5. Remove the oil filter by turning it counter-
clockwise with a oil filter wrench of the proper
size. A certain amount of oil will come out
when you remove the filter. So be sure to
have your drain pan in place underneath it.
6. Install a new oil filter in accordance with the
instructions on the carton or on the filter itself.
Do not over-tighten.
Tightening torque is: 1.2 ~ 1.6 kgf.m
Be sure that the mounting surface on the
engine is clean and that the old gasket is
removed completely. Lubricate the new
gasket on the filter with clean engine oil
before installation.
7. Refill the crankcase with the recommended
engine oil. Refer to the specification in chap-
ter 9 for engine oil capacity.
8. Start the engine and check to be sure no oil
is leaking from the drain plug or oil filter.
9. Shut off the engine and recheck the oil level.G050A01A-AATCHECKING AND CHANGING THE EN-
GINE COOLANT
WARNING:
Do not remove the radiator cap when the
engine is hot. When the engine is hot, the
engine coolant is under pressure and may
erupt through the opening if the cap is
removed. You could be seriously burned if
you do not observe this precaution. Do not
remove the radiator cap until the radiator is
cool to the touch.
NOTE:Always dispose of used engine oil in an
environmentally acceptable manner. It is
suggested that it be placed in a sealed
container and taken to a service station for
reclamation. Do not pour the oil on the
ground or put it into the household trash.
WARNING:Used motor oil may cause irritation or can-
cer of the skin if left in contact with the skin
for prolonged periods of time. Wash your
hands thoroughly with soap and warm
water as soon as possible after handling
used oil.

DO-IT-YOURSELF MAINTENANCE 6- 15
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G130A01A-AATCHECKING THE CLUTCH FLUID
To Check the Clutch FluidG130B02A-AATTo Replace the Fluid
Recommended brake fluid conforming to DOT
3 or DOT 4 specification should be used. The
reservoir cap must be fully tightened to avoid
contamination from foreign matter or moisture.
NOTE:Do not allow any other liquids to contami-
nate the brake fluid. Seal damage will result.
WARNING:Handle brake fluid carefully. It can damage
your vision if it gets into your eyes. Use only
DOT 3 or DOT 4 specification fluid from a
sealed container. Do not allow the fluid can
or reservoir to remain open any longer than
required. This will prevent entry of dirt and
moisture which can damage the brake sys-
tem and cause improper operation.
To add brake fluid, first wipe away any dirt then
unscrew the fluid reservoir cap. Slowly pour the
recommended fluid into the reservoir. Do not
overfill. Carefully replace the cap on the reser-
voir and tighten.
!
The clutch fluid level in the master cylinder
should be checked when performing other un-
der hood services. The system should be
checked for leakage at the same time. Check
to make certain that the clutch fluid level is
always between the "MAX" and "MIN" level
markings on the fluid reservoir. Fill as required.
Fluid loss indicates a leak in the clutch system
which should be inspected and repaired imme-
diately. Consult your Hyundai dealer.
WARNING:Use caution when handling brake fluid. It
can damage your vision if you get it in your
eyes. It will also damage your vehicle's
paint if spilled on it and not removed imme-
diately.
G140A01A-AATAIR CONDITIONING CARE
Keeping the Condenser Clean
The air conditioning condenser (and engine
radiator) should be checked periodically for
accumulation of dirt, dead insects, leaves, etc.
These can interfere with maximum cooling ef-
ficiency. When removing such accumulations,
brush or hose them away carefully to avoid
bending the cooling fans.
G130A01Y
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CONSUMER INFORMATION & REPORTING SAFETY DEFECTS 8- 5
I110A01A-AATSHOP MANUAL
A Hyundai Shop Manual is available from your
authorized Hyundai dealer. It's written for pro-
fessional technicians, but is simple enough for
most mechanically-inclined owners to under-
stand.
I100A02Y-AATSPARE TIRE AND TOOLS
Your Hyundai is delivered with the following:
Spare tire and wheel
Jack
Wheel nut wrench
Wrench Bar
I130A01A-AATCONSUMER INFORMATION
This consumer information has been prepared
in accordance with regulations issued by the
National Highway Traffic Safety Administration
of the U.S. Department of Transportation. It
provides the purchasers and/or prospective
purchasers of Hyundai automobiles with infor-
mation on uniform tire quality grading. Your
Hyundai dealer will help answer any questions
you may have as you read this information.
I120A02A-AATWARRANTIES FOR YOUR HYUNDAI
VEHICLE
o New vehicle 60 Months/60,000 Miles Limited
Warranty.
o New vehicle 120 Months/100,000 Miles Lim-
ited Powertrain Warranty (first owner only).
o Anti-Perforation Limited Warranty
o Emission Defect Warranty - Federal Vehicle
o California Emission Control System War-
ranty (if applicable)
o Emission Performance Warranty Federal
vehicle
o Replacement Parts and Accessories Lim-
ited Warranty
NOTE:Detailed warranty information is provided
in your Hyundai Owner's Handbook.
I130B02A-AAT
Uniform tire quality grading
Department of Transportation quality grades -
All passenger vehicle tires must conform to
Federal Safety Standards in addition to these
grades. These quality grades are molded on the
sidewall.
Treadwear - The tread wear grade is a com-
parative rating based on the wear rate of the tire
when tested under controlled conditions on a
specified government test course. For example,
a tire graded 150 would wear one and a half (1
- 1/2) times as well on the government course
as a tire graded 100. The relative performance
of tires depends upon the actual conditions of
their use, however, and may depart significantly
from the norm due to variations in driving habits,
service practices and differences in road char-
acteristics and climate.D040B01Y

10- 4 INDEX
K
Key ..................................................................................................... 1-3
If you lose your keys ...................................................................3-11
Positions......................................................................................... 2-3
M
Maintenance Intervals
Explanation of scheduled maintenance items ............................... 5-7
Maintenance under severe usage conditions ............................... 5-6
Scheduled maintenance ................................................................ 5-4
Service requirements .................................................................... 5-2
Map lamp ...........................................................................................1-49
Mirrors
Day-night inside rearview ............................................................1-52
Outside rear view .........................................................................1-50
O
Odometer..........................................................................................1-39
Outside rear view mirror heater .......................................................1-51
P
Parking Brake ....................................................................................1-56
Passenger Presense Detection .......................................................1-31
Power Driver seat .............................................................................1-13
Power Outlet ......................................................................................1-61
Power Steering Fluid Level ...............................................................6-20R
Radio (H240, H260, H290) ........................................... 1-80, 1-85, 1-90
Rear Seat
Fold down .....................................................................................1-15
Rear View mirror ...............................................................................1-52
Rear Window Defroster Switch ........................................................1-44
Reporting Safety Defects ................................................................... 8-7
S
Seat
Front.............................................................................................1-10
Seat Belts
3-Point system .............................................................................1-18
Adjusting your seat belt ...............................................................1-20
Care of seat belts .........................................................................1-17
Precautions..................................................................................1-16
Shop Manual ........................................................................................ 8-5
Spark Plugs ......................................................................................... 6-9
Speedometer.....................................................................................1-38
Starting Procedure .............................................................................. 2-4
Steering Wheel
Free play ......................................................................................6-16
Steering Wheel Tilt Lever ..................................................................1-61
Stereo Radio Operation (H240, H260, H290) .............. 1-80, 1-85, 1-90
Stereo Sound System .......................................................................1-78
Sun Visor ...........................................................................................1-60
Sunroof..............................................................................................1-47

Seoul KoreaPrinting: FEB. 10, 2002
Publication No.: A38O-EU32I
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