oil 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.

719
Maintenance
MAINTENANCE UNDER SEVERE USAGE CONDITIONS - DIESEL ENGINE
G040400ANF-EA
The following items must be serviced more frequently on cars mainly used under severe driving conditions.
Refer to the chart below for the appropriate maintenance intervals.
R : Replace I : Inspect and if necessary, adjust, correct, clean or replace
MAINTENANCE ITEM Maintenance
operation Maintenance intervals
Driving condition
Replace more frequently
depending on the condition
Engine oil and engine oil filter R Every 7,500 km or 6 months
A, B, C, F, G,
H, I, J, K, L
Air cleaner filter R C, E
Engine timing belt 2.0L Diesel R Every 75,000 km or 60 months D, E, F, G
Manual transaxle fluid (if equipped) R Every 100,000 km C, D, E, G, H, I, K
Automatic transaxle fluid (if equipped) R Every 40,000 km A, C, D, E, F
G, H, I
Steering gear rack, linkage and boots I C, D, E, F, G
Inspect more frequently
depending on the condition

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
24
7
ENGINE OIL
G060100AUN
Checking the engine oil level
1. Be sure the vehicle is on level ground.
2. Start the engine and allow it to reach normal operating temperature.
3. Turn the engine off and wait for a few minutes (about 5 minutes) for the oil to
return to the oil pan. 4. Pull the dipstick out, wipe it clean, and
re-insert it fully.
5. Pull the dipstick out again and check the level. The level should be between F and L.
If it is near or at L, add enough oil to bring
the level to F.Do not overfill.
Use a funnel to help prevent oil frombeing spilled on engine components.
Use only the specified engine oil. (Refer to “Recommended lubricants and capaci-
ties” in section 9.)
WARNING - Radiator hose
Be very careful not to touch the
radiator hose when checking or
adding the engine oil as it may be
hot enough to burn you.
ONF078002ONF078003

725
Maintenance
ENGINE COOLANT
G060200AFD-EA Changing the engine oil and filter
Have engine oil and filter changed by an
authorised HYUNDAI dealer according tothe Maintenance Schedule at the begin-ning of this section. G070000AFD-EA The high-pressure cooling system has a
reservoir filled with year-round antifreeze
coolant. The reservoir is filled at the fac-
tory.
Check the antifreeze protection and
coolant concentration level at least once
a year, at the beginning of the winter sea-
son, and before travelling to a colder cli-
mate. G070100AFD-EA
Checking the coolant level
WARNING
- Removing
radiator cap
Never attempt to remove the radi- ator cap while the engine is oper-
ating or hot. Doing so might leadto cooling system and engine
damage and could result in seri-
ous personal injury from escap-ing hot coolant or steam.
(Continued)
WARNING
Used engine oil may cause irrita- tion or cancer of the skin if left in
contact with the skin for prolonged
periods of time. Used engine oil
has been proven to contain car-
cinogens. Always protect your skin
by washing your hands thoroughlywith soap and warm water as soon
as possible after handling used oil.
(Continued)
Turn the engine off and wait until it cools down. Use extreme care
when removing the radiator cap.
Wrap a thick towel around it, and
turn it counterclockwise slowly to
the first stop. Step back while the
pressure is released from the
cooling system. When you aresure all the pressure has been
released, press down on the cap,
using a thick towel, and continue
turning counterclockwise to
remove it.
Even if the engine is not operat- ing, do not remove the radiatorcap or the drain plug while the
engine and radiator are hot. Hot
coolant and steam may still blow
out under pressure, causing seri-
ous injury.

Maintenance
28
7
BRAKE AND CLUTCH (IF EQUIPPED) FLUID
G080100AFD-EA
Checking the brake/clutch fluid
level
Check the fluid level in the reservoir peri-
odically. The fluid level should be
between MAX and MIN marks on the
side of the reservoir. Before removing the reservoir cap and
adding brake/clutch fluid, clean the area
around the reservoir cap thoroughly to
prevent brake/clutch fluid contamination.
If the level is low, add fluid to the MAX
level. The level will fall with accumulated
mileage. This is a normal condition asso-
ciated with the wear of the brake linings.
If the fluid level is excessively low, have
the brake system checked by an autho-
rised HYUNDAI dealer.
Use only the specified brake/clutch fluid.
(Refer to “Recommended lubricants andcapacities” in section 9.)
Never mix different types of fluid.
WARNING - Brake fluid
When changing and adding
brake/clutch fluid, handle it careful-
ly. Do not let it come in contact with
your eyes. If brake/clutch fluid
should come in contact with your
eyes, immediately flush them with a
large quantity of fresh tap water.
Have your eyes examined by a doc-
tor as soon as possible.
WARNING - Loss of brake fluid
In the event the brake system
requires frequent additions of fluid,
the vehicle should be inspected by
an authorised HYUNDAI dealer.
CAUTION
Do not allow brake/clutch fluid to contact the vehicle's body paint, as paint damage will result.
Brake/clutch fluid, which has been exposed to open air for an extendedtime should never be used as itsquality cannot be guaranteed. It should be disposed of properly.
Don't put in the wrong kind of fluid.A few drops of mineral-based oil, such as engine oil, in your brakeclutch system can damage brake
clutch system parts.
G120E02TG-D

729
Maintenance
POWER STEERING FLUID
G090100AEN-EA
Checking the power steering fluid
level
With the vehicle on level ground, check
the fluid level in the power steering reser-
voir periodically. The fluid should be
between MAX and MIN marks on the
side of the reservoir at the normal tem-
perature.
Before adding power steering fluid, thor- oughly clean the area around the reser-
voir cap to prevent power steering fluidcontamination.
If the level is low, add fluid to the MAX
level.
✽✽ NOTICE
Check that the fluid level is in the
"HOT" range on the reservoir. If thefluid is cold, check that it is in the"COLD" range.
In the event the power steering system requires frequent addition of fluid, the
vehicle should be inspected by an autho-
rised HYUNDAI dealer.
Use only the specified power steering fluid. (Refer to "Recommended lubricants or capacities" in section 9.)
G090200AEN
Checking the power steering hose
Check the connections for oil leaks, dam-
age and twists in the power steering
hose before driving.
CAUTION
To avoid damage to the power steering pump, do not operate thevehicle for prolonged periods
with a low power steering fluidlevel.
Never start the engine when the reservoir tank is empty.
When adding fluid, be careful that dirt does not get into the tank.
Too little fluid can result in increased steering effort and/ornoise from the power steering system.
The use of the non-specified fluid could reduce the effectiveness ofthe power steering system and cause damage to it.ONF078007

731
Maintenance
✽✽NOTICE
“C” (COLD) range is for reference only
and should NOT be used to determinetransaxle fluid level. ✽
✽
NOTICE
New automatic transaxle fluid should be
red. The red dye is added so the assem-bly plant can identify it as automatic
transaxle fluid and distinguish it from
engine oil or antifreeze. The red dye,
which is not an indicator of fluid quali-
ty, is not permanent. As the vehicle isdriven, the automatic transaxle fluid
will begin to look darker. The colour
may eventually appear light brown.
Therefore, have an authorised
HYUNDAI dealer change the automatictransaxle fluid according to theScheduled Maintenance at the begin-ning of this section.
Use only the specified automatic
transaxle fluid. (Refer to “Recommended
lubricants and capacities” in section 9.) G100200AFD-EA Changing the automatic transaxle fluid
Have automatic transaxle fluid changed
by an authorised HYUNDAI dealeraccording to the Maintenance Scheduleat the beginning of this section.
WARNING - Transaxle fluid
The transaxle fluid level should be
checked when the engine is at nor-
mal operating temperature. This
means that the engine, radiator,
radiator hose and exhaust system
etc., are very hot. Exercise great
care not to burn yourself during
this procedure.
WARNING - Parking brake
To avoid sudden movement of the
vehicle, apply parking brake and
depress the brake pedal before
moving the shift lever.
CAUTION
Low fluid level causes transaxle slippage. Overfilling can causefoaming, loss of fluid and transaxle malfunction.
The use of a non-specified fluid could result in transaxle malfunc-tion and failure.

741
Maintenance
G190200AUN
Battery recharging
Your vehicle has a maintenance-free,
calcium-based battery.
If the battery becomes discharged in ashort time (because, for example, the
headlights or interior lights were left on
while the vehicle was not in use),
recharge it by slow charging (trickle)
for 10 hours.
If the battery gradually discharges because of high electric load while the
vehicle is being used, recharge it at 20-
30A for two hours.(Continued)
When lifting a plastic-cased bat- tery, excessive pressure on the
case may cause battery acid to
leak, resulting in personal injury.
Lift with a battery carrier or with
your hands on opposite corners.
Never attempt to recharge the battery when the battery cablesare connected.
The electrical ignition system works with high voltage. Never
touch these components with theengine running or the ignition
switched on.
Failure to follow the above warn-
ings can result in serious bodily
injury or death.WARNING - Recharging
battery
When recharging the battery,
observe the following precautions:
The battery must be removed from the vehicle and placed in an area with good ventilation.
Do not allow cigarettes, sparks, or flame near the battery.
Watch the battery during charg- ing, and stop or reduce the charg-
ing rate if the battery cells begin
gassing (boiling) violently or if
the temperature of the electrolyte
of any cell exceeds 49°C (120°F).
Wear eye protection when check- ing the battery during charging.
(Continued)

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)