2005 Hyundai Sonata fuel

5
VEHICLE MAINTENANCE REQUIREMENTS
3
SCHEDULED MAINTENANCE
REQUIREMENTSF020A02Y-AATo Inspection should be performed any time a
malfunction is experienced or suspected.
o Receipts for all emission control system
services should be retained to demonstrate
compliance with conditions of the emissions
system warranty.
o After 120 months or 150,000 miles (240,000
km), continue to follow the prescribed main-
tenance intervals.
o For severe usage maintenance require-
ments, see page 5-6 of this section.
F010D02A-AATGeneral ChecksThese are the regular checks you should per-
form when you drive your Hyundai or you fill the
fuel tank. A list of these items will be found on
page 6-4.F010E01A-AATDo-It-Yourself MaintenanceIf you are mechanically inclined, own a few tools
that are required and want to take the time to do
so, you can inspect and service a number of
items. For more information about doing it your-
self, see Section 6.
F010F01A-AATA Few Tipso Whenever you have your Hyundai serviced,
keep copies of the service records in your
glove box. This will help ensure that you can
document that the required procedures have
been performed to keep your warranties in
effect. This is especially important when
service is not performed by an authorized
Hyundai dealer.
o If you choose to do your own maintenance
and repairs, you may find it helpful to have
an official Hyundai Shop Manual. A copy of
this publication may be purchased at your
Hyundai dealer's parts department.

5
VEHICLE MAINTENANCE REQUIREMENTS4
SCHEDULED MAINTENANCEF030B03NF-AATR :Replace I : Inspect and, after Inspection, clean, adjust, repair or replace if necessary.F030A01NF-AATThe following maintenance services must be performed to ensure good emission control and performance. Keep receipts for all vehicle emission services
to protect your warranty. Where both mileage and time are shown, the frequency of service is determined by whichever occurs first.
DESCRIPTION
EMISSION CONTROL ITEMS
ENGINE OIL AND FILTER
FUEL FILTER
FUEL LINES, FUEL HOSES AND CONNECTIONS
VACUUM AND CRANKCASE VENTILATION HOSES
VAPOR HOSE AND FUEL FILLER CAP
AIR CLEANER FILTER
VALVE CLEARANCE
SPARK PLUGS (IRIDIUM COATED)
FUEL TANK AIR FILTER
ELECTRONIC THROTTLE CONTROL No.
1
2
3
4
5
6
7
8
9
10MILES X 1000
KILOMETERS X 1000
MONTHS7.5
12
6
R
I
I15
24
12
R
I
I
I
I22.5
36
18
R
I
I30
48
24
R
I
I
I
R
R37.5
60
30
R
R
I
I45
72
36
R
I
I
I
I52.5
84
42
R
I
I
I60
96
48
R
I
I
I
R
I
R67.5
108
54
R
I
I75
120
60
R
R
I
I
I
I82.5
132
66
R
I
I90
144
72
R
I
I
I
R
R97.5
156
78
R
I
I
R105
168
84
R
I
I
I
I
I112.5
180
90
R
R
I
I120
192
96
R
I
I
I
R
I
R127.5
204
102
R
I
I135
216
108
R
I
I
I
I142.5
228
114
R
I
I150
240
120
R
R
I
I
I
R
R

5
VEHICLE MAINTENANCE REQUIREMENTS
7
F060D01A-AATo Fuel Lines, Fuel Hoses and Connec-
tionsCheck the fuel lines, fuel hoses and connec-
tions for leakage and damage. Have a trained
technician replace any damaged or leaking
parts immediately.F060B01NF-GATo Drive BeltsInspect all drive belts for evidence of cuts,
cracks, excessive wear or oil saturation and
replace if necessary. Drive belts should be
checked periodically for proper tension.
F060M01A-AATo Engine Oil and FilterThe engine oil and filter should be changed at the
intervals specified in the maintenance sched-
ule. If the car is being driven in severe condi-
tions, more frequent oil and filter changes are
required.F060C01A-AATo Fuel FilterA clogged filter can limit the speed at which the
vehicle may be driven, damage the emission
system and cause hard starting. If an exces-
sive amount of foreign matter accumulates in
the fuel tank, the filter may require replacement
more frequently.
After installing a new filter, run the engine for
several minutes, and check for leaks at the
connections. Fuel filters should be installed by
trained technicians.
F060F01A-AATo Vacuum, Crankcase Ventilation
HosesInspect the surface of hoses for evidence of
heat and/or mechanical damage. Hard and
brittle rubber, cracking, tears, cuts, abrasions,
and excessive swelling indicate deterioration.
Particular attention should be paid to examine
those hose surfaces nearest to high heat
sources, such as the exhaust manifold.
Inspect the hose routing to assure that the
hoses do not come in contact with any heat
source, sharp edges or moving component
which might cause heat damage or mechanical
wear. Inspect all hose connections, such as
clamps and couplings, to make sure they are
secure, and that no leaks are present. Hoses
should be replaced immediately if there is any
evidence of deterioration or damage.
EXPLANATION OF SCHEDULED MAINTENANCE ITEMS

5
VEHICLE MAINTENANCE REQUIREMENTS8
F070G02A-AATo Brake FluidCheck 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.F070F01A-AATo Brake Hoses and LinesVisually check for proper installation, chafing,
cracks, deterioration and any leakage. Replace
any deteriorated or damaged parts immedi-
ately.
F070E06A-AATo Automatic Transaxle FluidThe 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 HYUNDAI
GENUINE ATF SP III, DIAMOND ATF SP III, SK
ATF SP III or other brands meeting the SP III
specification approved by Hyundai Motor Co.
when adding or changing fluid. Using the wrong
ATF may result in damage to the ATM.
F070H01A-AATo Rear Brake Drums and Linings/
Parking BrakeCheck 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.
F070C01A-AATo CoolantThe coolant should be changed at the intervals
specified in the maintenance schedule.
F060J01A-AATo Spark PlugsMake sure to install new spark plugs of the
correct heat range.F060H01A-AATo Air Cleaner FilterA Genuine Hyundai air cleaner filter is recom-
mended when the filter is replaced.F060G01A-AATo Vapor Hose and Fuel Filler CapThe vapor hose and fuel filler cap should be
inspected at those intervals specified in the
maintenance schedule. Make sure that a new
vapor hose or fuel filler cap is correctly re-
placed.
F070D01A-AATo Manual Transaxle OilInspect 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.
F060N02E-AATo Valve ClearanceInspect excessive valve noise and/or engine
vibration and adjust if necessary. A qualified
technician should perform the operation.

6
DO-IT-YOURSELF MAINTENANCE
5
G030C01JM-AATTo Check the Oil Level
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.
!
WARNING:
Be very careful not to touch the radiator
hose when checking the engine oil as it may
be hot enough to burn you.
CHECKING THE ENGINE OILG030B01O-AATRecommended Oil
G030C01NF
The engine oil quality should meet the following
classification.
API SJ, SL or ABOVE,
ILSAC GF-3 or ABOVE
G030B01JM-UG030C02NF
(2.4L)(3.3L)NOTE:o For good fuel economy, SAE 5W-20 (5W-
30), ILSAC GF-3 engine oil is preferred
regardless of regional option and en-
gine variation.
o If SAE 5W-20, ILSAC GF-3 engine oil is
not available, secondary recommended
engine oil for corresponding tempera-
ture range can be used.
G030A01A-AATEngine 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.

6
DO-IT-YOURSELF MAINTENANCE
11
!!
10.Replace the reservoir cap and check to be
sure the drain cock and the radiator cap are
fully closed and not leaking.
CAUTION:
Recheck after a few days and add the cool-
ant if the level is below the "L" level.
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.
Type
SK16PR-A11
IFR5G-11
SPARK PLUGSG060A01NF-AAT
G060A01LYour engine was originally equipped with Iri-
dium-tipped spark plugs.
Iridium-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 Iridium-tipped spark
plugs.
G060B01NF-AATReplacing 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:
0.039 ~ 0.043 in.
(1.0~1.1 mm)
Remark
2.4L
3.3L

6
DO-IT-YOURSELF MAINTENANCE
30
HEADLIGHT AIMING ADJUSTMENTG290A02O-AATBefore performing aiming adjustment, make
sure of the following.
1. Keep all tires inflated to the correct pressure.
2. Place the vehicle on level ground and press
the front bumper & rear bumper down sev-
eral times.
Place vehicle at a distance of 118 in. (3m)
from the test wall.
3. See that the vehicle is unloaded (except for
full levels of coolant, engine oil and fuel, and
spare tire, jack, and tools). Have the driver
or equivalent weight placed in driver's seat.
4. Clean the headlight lenses and turn on the
headlights (Low beam).
5. Open the hood.
G290A01NF-A
Vertical
aiming
!
6. Draw a vertical line (through the center of
each headlight beam pattern) and a horizon-
tal line (through the center of each headlight
beam pattern) on the aiming screen.
And then, draw a parallel line at 0.8 in. (21
mm) under the horizontal line.
7. Adjust each cut-off line of the low beam to the
parallel line with a phillips screwdriver -
VERTICAL AIMING.
WARNING:
Horizontal aiming should be adjusted by
an authorized Hyundai dealer.
G290B01NF-AATAdjustment After Headlight Assembly
Replacement
G260B01GK
L
W
H
H
Cut-off line
Ground line
"P"
Horizontal line
Vertical line
0.8 in.(21 mm)
If the vehicle has had front body repair and the
headlight assembly has been replaced, the
headlight aiming should be checked using the
aiming screen as shown in the illustration. Turn
on the headlight switch (Low Beam Position).
1. Adjust headlights so that main axis of light is
parallel to the center line of the body and is
aligned with point "P" shown in the illustration.
2. Dotted lines in the illustration show the center
of the headlights.

6
DO-IT-YOURSELF MAINTENANCE
40
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
HORN
TAIL
ECU
IG1
DRL
FR FOG
A/CON
F/PUMP
DIODE
ATM
STOP
H/LP LO RH
S/ROOF
H/LP WASHER
H/LP HI
ECU
SNSR.3
SNSR.1
SNSR.2
B/UP
IGN COIL
ECU (IG1)
H/LP LO
ABS
PROTECTED COMPONENTS
ABS/ESC control module, Multipurpose check connector
ABS/ESC control module, Multipurpose check connector
Fuse 23, 24, 30, 31, 32, 33, 34, 35
Defogger relay
Blower relay
Power window relay, Fuse 16
Start relay, Ignition switch (IG2, START)
Engine control unit relay
Power connector 1/2, Fuse 21,22
Ignition switch (ACC, IG1)
Fusible Iink (ABS. 1, ABS. 2, RR HTD, BLOWER)
(Spare)
Horn relay
Tail light relay
PCM
(Spare)
Siren relay, DRL control module
Front fog light relay
A/C relay
Fuel pump relay
(Spare)
ATM control relay
Stop light relay
(Spare)
Sunroof control module
Headlight washer motor
Headlight relay (High)
(Spare)
Oxygen sensor, Fuel pump relay
Mass air flow sensor, Crankshaft/Camshaft position sensor, Oil control valve, SMATRA
A/C relay, Cooling fan relay, Injectors
Back up light switch, Pulse generator, Vehicle speed sensor
Ignition coils, Condenser
PCM
Headlight relay (Low)
ABS/ESC control module, Multipurpose check connector
ABS.1
ABS.2
I/P B+1
RR HTD
BLOWER
P/WDW
IGN.2
ECU RLY
I/P B+2
IGN.1
ALT
MDPSFUSE RATING
40A
20A
40A
40A
40A
40A
40A
30A
30A
30A
150A
100A
15A
20A
10A
10A
15A
15A
10A
20A
-
20A
15A
15A
15A
20A
20A
10A
10A
15A
15A
10A
20A
10A
20A
10A
DESCRIPTION
FUSIBLE
LINK
FUSE