fuel Hyundai Sonata

Maintenance
16
7
NORMAL MAINTENANCE SCHEDULE - DIESEL ENGINE (CONT.)
MAINTENANCE
INTERVALS
MAINTENANCE ITEMNumber of months or driving distance, whichever comes first
Months 12 24 36 48 60 72 84 96 Km×1,000
15 30 45 60 75 90 105 120
Fuel filler cap I I I I
PCV and crankcase ventilation hose I I I I
Vacuum hose (for VGT) I I I I I I I I
Vacuum pump and vacuum hose I I I I
Vacuum pump oil hose I I I I
Fuel filter cartridge * 3,
*4
RRRR
Fuel lines, hoses and connections I I I I I I I I Cooling system Inspect “Coolant level adjustment and leak” every day
Inspect “Water pump” when replacing the drive belt or timing belt
I : Inspect and if necessary, adjust, correct, clean or replace.
R : Replace or change.* 3
: If the diesel fuel specifications don't meet the European standards EN590, replace it more frequently.
Consult an authorised HYUNDAI dealer for details.
* 4
: Inspect and replace when there is a problem with starting the engine or fuel supplies.

721
Maintenance
EXPLANATION OF SCHEDULED MAINTENANCE ITEMS
G050100AUN Engine oil and filter The engine oil and filter should be
changed at the intervals specified in the
maintenance schedule. If the car is being
driven in severe conditions, more fre-quent oil and filter changes are required.
G050200AUN Drive belts
Inspect all drive belts for evidence of
cuts, cracks, excessive wear or oil satu-
ration and replace if necessary. Drive
belts should be checked periodically forproper tension and adjusted as neces-
sary. G050300AFD-EA
Fuel filter (cartridge) A clogged filter can limit the speed at
which the vehicle may be driven, damage
the emission system and cause multiple
issues such as hard starting. If an exces-
sive amount of foreign matter accumu-
lates 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 an authorised HYUNDAI
dealer.
G050400AFD-EA
Fuel lines, fuel hoses and con- nections
Check the fuel lines, fuel hoses and con-
nections for leakage and damage. Have
an authorised HYUNDAI dealer replace
any damaged or leaking parts immedi-
ately.
WARNING -
Diesel only
Never work on injection system with engine running or within 30
seconds after shutting off engine.
High pressure pump, rail, injectorsand high pressure pipes are sub-
ject to high pressure even after the
engine stopped. The fuel jet pro-
duced by fuel leaks may cause seri-
ous injury, if it touch the body.
People using pacemakers should
not move than 30cm closer to theECU or wiring harness within the
engine room while engine is run-
ning, since the high currents in the
Common Rail system produce con-
siderable magnetic fields.

Maintenance
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7
G050500AUN Timing belt (if equipped)
Inspect all parts related to the timing belt
for damage and deformation. Replace
any damaged parts immediately.
G050600AUN-EA
Vapour hose and fuel filler cap
The vapour hose and fuel filler cap
should be inspected at those intervals
specified in the maintenance schedule.
Make sure that a new vapour hose or fuelfiller cap is correctly replaced. G050700AUN
Vacuum crankcase ventilation hoses (if equipped)
Inspect the surface of hoses for evidence
of heat and/or mechanical damage. Hard
and brittle rubber, cracking, tears, cuts,
abrasions, and excessive swelling indi-
cate 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 movingcomponent which might cause heat dam-
age or mechanical wear. Inspect all hose
connections, such as clamps and cou-
plings, 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.G050800AFD
Air cleaner filter
A Genuine HYUNDAI air cleaner filter is recommended when the filter isreplaced.
G050900AUN-EA
Spark plugs (for petrol engine)
Make sure to install new spark plugs of
the correct heat range. G051000AFD-EA
Valve clearance (if equipped)
Inspect excessive valve noise and/or
engine vibration and adjust if necessary.
An authorised HYUNDAI dealer should
perform the operation.
G051100AUN Cooling system
Check the cooling system parts, such as
radiator, coolant reservoir, hoses and
connections for leakage and damage.
Replace any damaged parts.
G051200AUN Coolant The coolant should be changed at the
intervals specified in the maintenance
schedule.

733
Maintenance
FUEL FILTER (FOR DIESEL)
G150100AFD-EA
Draining water from fuel filter
The fuel filter for diesel engine plays an
important role of separating water from
fuel and accumulating the water in itsbottom.
If water accumulates in the fuel filter, the
warning light comes on when the ignition
switch is in the ON position.
If the light is turned on, take your car to
the authorised HYUNDAI dealer and
have drain the water and checked thesystem. G150200AFD
Fuel filter cartridge replacement
✽✽NOTICE
When replacing the fuel filter cartridge, use HYUNDAI genuine parts.
ONF055004
CAUTION
If the water accumulated in the fuel filter is not drained at proper times,
damages to the major parts such asthe fuel system can be caused bywater permeation in the fuel filter.

743
Maintenance
TYRES AND WHEELS
G200100AUN-EA
Tyre care
For proper maintenance, safety, and
maximum fuel economy, you must
always maintain recommended tyre
inflation pressures and stay within
the load limits and weight distribution
recommended for your vehicle. G200200AFD-EA Recommended cold tyre inflation pressures All tyre pressures (including the
spare) should be checked when the
tyres are cold. “Cold Tyres” means
the vehicle has not been driven for at
least three hours or driven less than1.6 km (one mile).
Recommended pressures must be
maintained for the best ride, top vehi-
cle handling, and minimum tyre
wear.
For recommended inflation pressure
refer to “Tyre and wheels” in section9. All specifications (sizes and pres-
sures) can be found on a label
attached to the vehicle.
WARNING - Tyre underin-
flation
Severe underinflation (70 kPa (10 psi) or more) can lead to
severe heat build-up, causing
blowouts, tread separation andother tyre failures that can
result in the loss of vehicle con-
trol leading to severe injury or
death. This risk is much higher
on hot days and when driving
for long periods at high speeds.
OHD086003R

Maintenance
44
7
WARNING - Tyre inflation
Overinflation or underinflation
can reduce tyre life, adversely
affect vehicle handling, and
lead to sudden tyre failure. This
could result in loss of vehicle
control and potential injury.
CAUTION - Tyre pressure
Always observe the following:
Check tyre pressure when the tyres are cold. (After vehiclehas been parked for at leastthree hours or hasn't been driven more than 1.6 km (onemile) since startup.)
Check the pressure of your spare tyre each time youcheck the pressure of other tyres.
Never overload your vehicle. Be careful not to overload avehicle luggage rack if yourvehicle is equipped with one.
Worn, old tyres can cause accidents. If your tread isbadly worn, or if your tyreshave been damaged, replacethem.
CAUTION
Underinflation also results in excessive wear, poor handlingand reduced fuel economy. Wheel deformation also ispossible. Keep your tyre pres-sures at the proper levels. If a tyre frequently needs refilling,have it checked by an autho-rised HYUNDAI dealer.
Overinflation produces a harsh ride, excessive wear atthe centre of the tyre tread,and a greater possibility ofdamage from road hazards.
CAUTION
Warm tyres normally exceed recommended cold tyre pres-sures by 28 to 41 kPa (4 to 6 psi). Do not release air fromwarm tyres to adjust the pres-sure or the tyres will be under- inflated.
Be sure to reinstall the tyre inflation valve caps. Withoutthe valve cap, dirt or moisturecould get into the valve core and cause air leakage. If avalve cap is missing, install anew one as soon as possible.

759
Maintenance
Fuse Fuse ratingProtected component
P/AMP 20A Audio amp
DR LOCK 20A Door lock/unlock relay HAZARD 10A Hazard relay
P/SEAT RH 30A Power seat manual switch(RHD) A/BAG IND 10A Instrument cluster T/SIG 10A Turn signal relay
CLUSTER 10A BCM(Body Control Module), Instrument cluster, Yaw rate sensor, ESP switch, Seat warmer AGCS 10A AGCS
START 10A Start relay
PEDAL ADJ 15A (Spare)
ECS/RR FOG 15A Rear fog light relay T/LID OPEN 15A Boot lid relay, Fuel filler door and boot lid switch S/HTR 15A Seat warmer switch
P/SEAT LH 30A Power seat manual switch
SPORT MODE 10A Sport mode switch, Key solenoid MIRR HTD 10A A/C control module, Outside mirror and mirror folding motor
POWER CONNECTOR. 1 15A Audio
POWER CONNECTOR. 2 15A BCM(Body Control Module), Digital clock, Instrument cluster, A/C control module, Courtesy lights

Maintenance
60
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Engine compartment
Description Fuse rating Protected component
ABS.1 40A ABS/ESP control module, Multipurpose check connector
ABS.2 20A ABS/ESP control module, Multipurpose check connector
I/P B+1 40A Fuse 23, 24, 30, 31, 32, 33, 34, 35
RR HTD 40A Defogger relay
BLOWER 40A Blower relay
Fusible link P/WDW 40A Power window relay, Fuse 16 IGN.2 40A Start relay, Ignition switch (IG2, START)
ECU RLY 30A Engine control unit relay
I/P B+2 30A Power connector 1/2, Fuse 21,22
IGN.1 30A Ignition switch (ACC, IG1)
ALT 150A Fusible Iink (ABS. 1, ABS. 2, RR HTD, BLOWER)
1 HORN 15A Horn relay
2 TAIL 20A Tail light relay
3 ECU 10A PCM
4 IG1 10A DSL TCU
5 DRL 15A Siren relay, DRL control module
6 FR FOG 15A Front fog light relay
Fuse 7 A/CON 10A A/C relay 8 F/PUMP 20A Fuel pump relay
9 DIODE - (Spare)
10 ATM 20A ATM control relay, TCU
11 STOP 15A Stop light switch
12 H/LP LO RH 15A (Spare)
13 S/ROOF 15A Sunroof control module

761
Maintenance
Description Fuse rating Protected component14 H/LP WASHER 20A Headlight washer motor
15 H/LP HI 20A Headlight relay (High)
16 ECU 10A DSL TCU, ALT
17 SNSR.2 10A Oxygen sensor, Fuel pump relay
18 SNSR.1 15A Mass air flow sensor, Crankshaft/Camshaft position sensor, Oil control valve, SMATRA
Fuse 19 SNSR.3 15A A/C relay, Cooling fan relay, Injectors 20 B/UP 10A Back up light switch, Pulse generator, Vehicle speed sensor
21 IGN COIL 20A Ignition coils, Condenser
22 ECU (IG1) 10A PCM, Pulse generator
23 H/LP LO 20A Headlight relay (Low)
24 ABS 10A ABS/ESP control module, Multipurpose check connector
Description Fuse rating Protected component
GLOW PLUG FUSIBLE LINK 80A Glow plug, Air heater
PTC HEATER #1 FUSIBLE LINK 50A PTC heater 1
PTC HEATER #2 FUSIBLE LINK 50A PTC heater 2
PTC HEATER #3 FUSIBLE LINK 50A PTC heater 3
FUEL FILTER HEATER FUSIBLE LINK 40A Fuel filter heater
GLOW PLUG RELAY - Glow plug relay
PTC HEATER RELAY #1 - PTC heater relay 1
PTC HEATER RELAY #2 - PTC heater relay 2
PTC HEATER RELAY #3 - PTC heater relay 3
FUEL FILTER HEATER RELAY - Fuel filter heater relay
Engine compartment (Diesel box)

Maintenance
68
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G221000ANF-EA Headlight aiming adjustment
Before performing aiming adjustment,
make sure of the following.
1. Keep all tyres inflated to the correct
pressure.
2. Place the vehicle on level ground and press the front bumper & rear bumper
down several times. Place vehicle at adistance of 3m (118 in.) from the test
wall.
3. See that the vehicle is unloaded (except for full levels of coolant, engine
oil and fuel, and spare tyre, 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 bonnet.
6. Draw the vertical line (through the cen-
tre of each headlight beam pattern)
and the horizontal line (through the
centre of each headlight beam pattern)
on the aiming screen. And then, draw
the parallel line at 30 mm (1.18 in.)
under the horizontal line.
7. Adjust each cut-off line of the low beam to the parallel line with a phillips
screwdriver - VERTICAL AIMING.
8. Adjust each cut-off line of the low beam to the each vertical line with a
phillips screwdriver - HORIZONTALAIMING.Adjustment after headlight assembly
replacement
If the vehicle has had front body repair
and the headlight assembly has beenreplaced, the headlight aiming should be
checked using the aiming screen as
shown in the illustration. Turn on the
headlight switch. (Low Beam Position)
G290A01NF
Vertical aiming
Horizontal aiming
G290B01JM-D H
H L30 mm
W
Horizontal line
Vertical line
“P”
Ground line
Cut-off line