2014 Hyundai Sonata engine

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7
Maintenance
NORMAL MAINTENANCE SCHEDULE (CONT.) (EXCEPT EUROPE)
I:Inspect and if necessary, adjust, correct, clean or replace.
R:Replace or change.
*8:When adding coolant, use only deionized water or soft water 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.
*9:For your convenience, it can be replaced prior to it's interval when you do maintenance of other items.
Number of months or driving distance, whichever comes first
Months1224364860728496
Miles×1,0001020304050607080
Km×1,000153045607590105120
Cooling system
Inspect “Coolant level adjustment and leak” every day
At first, inspect 60,000 km (40,000 miles) or 48 months
after that, inspect every 30,000 km (20,000 miles) or 24 months
Engine coolant *8At first replace at 200,000 km (120,000 miles) or 10 years:
after that, replace every 40,000 km (25,000 miles) or 24 months *9
Battery conditionIIIIIIII
Brake lines, hoses and connectionsIIIIIIII
Brake pedal, Clutch pedal (if equipped)IIII
Par king brakeIIII
Brake/Clutch fluidIIIIIIII
Disc brakes and padsIIIIIIII
MAINTENANCE
INTERVALS
MAINTENANCE
ITEM

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7
Maintenance
MAINTENANCE UNDER SEVERE USAGE CONDITIONS (EXCEPT EUROPE)
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 itemMaintenance
operationMaintenance intervalsDriving condition
Engine oil and
engine oil filter
For Middle
East, Brazil
Nu 2.0 MPI
RReplace every 5,000 km (3,100 miles)
or 6 months
A, B, C, D, E,
F, G , H , I , K , L
Theta 2.4 MPI
Theta 2.4 GDI
Except Middle
East, Brazil
Nu 2.0 MPI
RReplace every 7,500 km (4,650 miles)
or 6 monthsTheta 2.4 MPI
Theta 2.4 GDI
Theta T-GDI 2.0REvery 5,000 km (3,000 miles) or 3 months
Air cleaner filterRReplace more frequently
depending on the conditionC, E
Spark plugs RReplace more frequently
depending on the conditionA, B, H, I
Steering gear rack, linkage and bootsIInspect more frequently
depending on the conditionC, D, E, F, G
Front suspension ball jointsIInspect more frequently
depending on the conditionC, D, E, F, G

Maintenance
7-22
Severe driving conditions
A:Repeatedly driving short distance of less than 5 miles (8 km)
in normal temperature or less than 10 miles (16 km) in freez-
ing temperature
B:Extensive engine idling or low speed driving for long distances
C:Driving on rough, dusty, muddy, unpaved, graveled or salt
spread roads
D:Driving in areas using salt or other corrosive materials or in
ver y cold weather
E:Driving in sandy areas
F:Driving in heavy traffic area over 32°C (90°F)
G:Driving on uphill, downhill, or mountain roads repeatedly
H:Towing a trailer, or using a camper or roof rack
I:Driving for patrol car, taxi, commercial car or vehicle towing
J:Driving over 140 km/h (87 mile/h)
K:Driving over 170 km/h (106 mile/h)
L:Frequently driving in stop-and-go conditions
Maintenance itemMaintenance
operationMaintenance intervalsDriving condition
Disc brakes and pads, calipers and rotorsIInspect more frequently
depending on the conditionC, D, E, G, H
Par king brakeIInspect more frequently
depending on the conditionC, D, G, H
Driveshaft and bootsIInspect more frequently
depending on the conditionC, D, E, F, G, H, I
Manual transaxle fluid (if equipped)REvery 120,000 km (80,000 miles)C, F, G, I, K
Automatic transaxle fluid (if equipped)REvery 100,000 km (62,000 miles)A, C, F, G, I
Climate control air filter (if equipped)RReplace more frequently
depending on the conditionC, E

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7
Maintenance
EXPLANATION OF SCHEDULED MAINTENANCE ITEMS
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 frequent oil and filter changes
are required.
Drive belts
Inspect all drive belts for evidence of
cuts, cracks, excessive wear or oil
saturation and replace if necessary.
Drive belts should be checked peri-
odically for proper tension and
adjusted as necessary.
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 excessive 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.
We recommend that the fuel filter be
replaced by an authorized HYUNDAI
dealer.
Fuel lines, fuel hoses and con-
nections
Check the fuel lines, fuel hoses and
connections for leakage and dam-
age. We recommend that the fuel
lines, fuel hoses and connections be
replaced by an authorized HYUNDAI
dealer.
Va p o r h o s e a n d f u e l f i l l e r c a p
The vapor hose and fuel filler cap
should be inspected at those inter-
vals specified in the maintenance
schedule. Make sure that a new
vapor hose or fuel filler cap is cor-
rectly replaced.
When you are inspecting the
belt, place the ignition switch to
the LOCK/OFF or ACC position.
CAUTION

7-24
Maintenance
Va c u u m c r a n k c a s e v e n t i l a t i o n
hoses (if equipped)
Inspect the surface of hoses for evi-
dence of heat and/or mechanical
damage. Hard and brittle rubber,
cracking, tears, cuts, abrasions, and
excessive swelling indicate deterio-
ration. 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 con-
tact with any heat source, sharp
edges or moving component which
might cause heat damage or mechan-
ical wear. Inspect all hose connec-
tions, 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.
Air cleaner filter
We recommend that the air cleaner
filter be replaced by an authorized
HYUNDAI dealer.
Spark plugs
Make sure to install new spark plugs
of the correct heat range.
Va l v e cl e a r a n c e ( T h e t a E n g i n e )
Inspect excessive valve noise and/or
engine vibration and adjust if neces-
sary. We recommend that the system
be serviced by an authorized
HYUNDAI dealer.
Cooling system
Check the cooling system parts,
such as radiator, coolant reservoir,
hoses and connections for leakage
and damage. Replace any damaged
parts.
Coolant
The coolant should be changed at
the intervals specified in the mainte-
nance schedule.
Do not disconnect and inspect
spark plugs when the engine is
hot. You may burn yourself.
WARNING

7-26
Maintenance
Brake pads, calipers and
rotors
Check the pads for excessive wear,
discs for run out and wear, and
calipers for fluid leakage.
For more infor mation on checking
the pads or lining wear limit, refer to
the HYUNDAI web site.
(http://brakemanual.hmc.co.kr)
Suspension mounting bolts
Check the suspension connections
for looseness or damage. Retighten
to the specified torque.
Steering gear box, linkage &
boots/lower 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 dam-
age. Check the dust boots and ball
joints for deterioration, cracks, or
damage. Replace any damaged
parts.
Drive shafts and boots
Check the drive shafts, boots and
clamps for cracks, deterioration, or
damage. Replace any damaged
parts and, if necessary, repack the
grease.
Air conditioning refrigerant/
compressor
Check the air conditioning lines and
connections for leakage and dam-
age.

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7
Maintenance
ENGINE OIL
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 tempera-
ture.
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.
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.
WARNING
OLF074094L
OLF074077N
■Theta 2.0 T-GDI
■Theta 2.4 MPI
OLF074003
■Theta 2.4 GDI
OLF074095L
■Nu 2.0 MPI

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Maintenance
5. Pull the dipstick out again and
check the level. The level should
be between F and L.
•Do not overfill the engine oil.
It may damage the engine.
•Do not spill engine oil, when
adding or changing engine
oil. If you drop the engine oil
on the engine room, wipe it off
immediately.
•When you wipe the oil level
gauge, you should wipe it with
a clean cloth. When mixed
with debris, it can cause
engine damage.
CAUTION
OLF074096L
OLF074079N
■Theta 2.0 T-GDI
■Theta 2.4 MPI
OLF074005
■Theta 2.4 GDI
OLF074097L
■Nu 2.0 MPI
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 from being spilled on engine compo-
nents.
Use only the specified engine oil. (Refer to “Recommended lubricants and
capacities” in section 8.)