2009 Hyundai Sonata engine

713
Maintenance
MAINTENANCE UNDER SEVERE USAGE CONDITIONS - PETROL ENGINE
G040200ANF-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
Engine oil and engine oil filter R Every 7,500 km or 6 months A, B, C, D, E,
F, G, H, I K
Air cleaner filter R C, E
Spark plugs R B, H
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
MAINTENANCE ITEMMaintenance
operation Maintenance intervals
Driving condition
Replace more frequently
depending on the condition
Inspect more frequently
depending on the condition Replace more frequently
depending on the condition

715
Maintenance
NORMAL MAINTENANCE SCHEDULE - DIESEL ENGINE
G040300ANF-EA
I : Inspect and if necessary, adjust, correct, clean or replace.
R : Replace or change.* 1
: Adjust alternator and power steering and air conditioner drive belt (if equipped).
Inspect and if necessary correct or replace.
* 2
: Check the engine oil level and leak every 500 km or before starting a long trip.
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
Drive belts * 1
IIII
Engine oil and engine oil filter * 2
RRR RRRRR
Engine timing belt 2.0L Diesel
Tensioner/idler/damper pulley Air cleaner filter I I R I I R I IInspect when replacing the drive belt or timing beltInspect every 90,000 km or 72 months
Replace every 150,000 km or 120 months

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.

717
Maintenance
NORMAL MAINTENANCE SCHEDULE - DIESEL ENGINE (CONT.)
Number 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
Engine coolant *5
Battery condition I I I I I I I I
All electrical systems I I I I
Brake lines, hoses and connections I I I I I I I I
Brake pedal, clutch pedal I I I I
Parking brake I I I I I I I I
Brake/clutch fluid I I I I
Disc brakes and pads I I I I I I I IAt first, replace at 90,000 km or 60 months:
after that, replace every 40,000 km or 24 months * 6
MAINTENANCE
INTERVALS
MAINTENANCE ITEM
I : Inspect and if necessary, adjust, correct, clean or replace.
R : Replace or change.* 5
: When adding coolant, use only a qualified coolant additive for your vehicle and never mix hard water in the coolant filled at
the factory. An improper coolant mixture can result in serious malfunction or engine damage.
* 6
: For your convenience, it can be replaced prior to it's interval when you do maintenance of other items.

Maintenance
18
7
NORMAL MAINTENANCE SCHEDULE - DIESEL ENGINE (CONT.)
Number 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
Steering gear rack, linkage and boots I I I I I I I I
Power steering pump, belt and hoses I I I I I I I I
Drive shaft and boots I I I I I I I I
Tyre (pressure & tread wear) I I I I I I I I
Front suspension ball joints I I I I I I I I
Bolt and nuts on chassis and body I I I I I I I I
Air conditioner refrigerant (if equipped) I I I I I I I I
Air conditioner compressor (if equipped) I I I I I I I I
Climate control air filter (if equipped)RRR RRRRR
Manual transaxle fluid (if equipped) I I I I I I I I
Automatic transaxle fluid (if equipped) I I I I I R I I
MAINTENANCE INTERVALS
MAINTENANCE ITEM
I : Inspect and if necessary, adjust, correct, clean or replace.
R : Replace or change.

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
22
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.