check engine Hyundai Sonata 2014 Service Manual

6-9
What to do in an emergency
6
6. If you cannot find the cause of the
overheating, wait until the engine
temperature has returned to nor-
mal. Then, if coolant has been
lost, carefully add coolant to the
reservoir to bring the fluid level in
the reservoir up to the halfway
mark.
7. Proceed with caution, keeping
alert for further signs of overheat-
ing. If overheating happens again,
we recommend that you call an
authorized HYUNDAI dealer for
assistance.
•Serious loss of coolant indi-
cates a leak in the cooling
system and we recommend
the system be checked by an
authorized HYUNDAI dealer.
•When the engine overheats
from low engine coolant, sud-
denly adding engine coolant
may cause cracks in the
engine. To prevent damage,
add engine coolant slowly in
small quantities.
CAUTION
IF YOU HAVE A FLAT TIRE
Changing a tire can be danger-
ous. Follow the instructions in
this section when changing a
tire to reduce the risk of serious
injury or death.
WARNING

7
Maintenance
7
Maintenance
Engine compartment .............................................7-3
Maintenance services ...........................................7-6
Owner's responsibility ......................................................7-6
Owner maintenance precautions ..................................7-6
Owner maintenance ...............................................7-7
Owner maintenance schedule ........................................7-8
Scheduled maintenance services ......................7-10
Normal maintenance schedule (for Europe) ............7-11
Maintenance under severe usage and
low mileage conditions (for Europe) ..........................7-15
Normal maintenance schedule (except Europe) .....7-17
Maintenance under severe usage conditions
(except Europe) ...............................................................7-21
Explanation of scheduled maintenance items ..7-23
Engine oil ..............................................................7-27
Checking the engine oil level ....................................7-27
Checking the engine oil and filter ..............................7-29
Engine coolant......................................................7-30
Checking the coolant level ...........................................7-30
Changing the coolant .....................................................7-32
Brake/Clutch fluid ..............................................7-33
Checking the brake/clutch fluid level ........................7-33
Washer fluid .........................................................7-35
Checking the washer fluid level ...............................7-35
Parking brake .......................................................7-36
Checking the parking brake .........................................7-36
Air cleaner ............................................................7-37
Filter replacement ...........................................................7-37
Climate control air filter .....................................7-39
Filter inspection ...............................................................7-39
Filter replacement ...........................................................7-39
Wiper blades .........................................................7-40
Blade inspection ..............................................................7-40
Blade replacement ..........................................................7-40
Battery...................................................................7-42
For best battery service................................................7-42
Battery capacity label ...................................................7-44
Battery recharging .......................................................7-44
Reset items .......................................................................7-45
Tires and wheels ..................................................7-46
Tire care ............................................................................7-46
Recommended cold tire inflation pressures.............7-46
Checking tire inflation pressure ..................................7-48
Tire rotation ....................................................................7-49
Wheel alignment and tire balance ..............................7-50
Tire replacement .............................................................7-50
Wheel replacement ........................................................7-52
Tire traction ......................................................................7-52
Tire maintenance ...........................................................7-52
7

7-7
7
Maintenance
OWNER MAINTENANCE
The following lists are vehicle checks
and inspections that should be per-
for med by the owner or an authorized
HYUNDAI dealer at the frequencies
indicated to help ensure safe,
dependable operation of your vehicle.
Any adverse conditions should be
brought to the attention of your deal-
er as soon as possible.
These Owner Maintenance vehicle
checks are generally not covered by
warranties and you may be charged
for labor, par ts and lubricants used.
Performing maintenance work
on a vehicle can be dangerous.
If you lack sufficient knowledge
and experience or the proper
tools and equipment to do the
work, we recommend that the
system be serviced by an author-
ized HYUNDAI dealer. ALWAYS
follow these precautions for
performing maintenance work:
•Park your vehicle on level
ground, move the shift lever
into the P (Park, for automatic
transaxle vehicle) position,
apply the parking brake, place
the ignition switch in the
LOCK/OFF position.
•Block the tires (front and back)
to prevent the vehicle from
moving.
Remove loose clothing or jew-
elry that can become entan-
gled in moving parts.
(Continued)
WARNING (Continued)
•If you must run the engine
during maintenance, do so
out doors or in an area with
plenty of ventilation.
•Keep flames, sparks, or smok-
ing materials away from the
battery and fuel-related parts.

7-8
Maintenance
Owner maintenance schedule
When you stop for fuel:
•Check the engine oil level.
•Check coolant level in the engine
coolant reservoir.
•Check the windshield washer fluid
level.
•Check for low or under-inflated
tires.
While operating your vehicle:
•Note any changes in the sound of
the exhaust or any smell of exhaust
fumes in the vehicle.
•Check for vibrations in the steering
wheel. Notice if there is any
increased steering effort or loose-
ness in the steering wheel, or
change in its straight-ahead position.
•Notice if your vehicle constantly
turns slightly or “pulls” to one side
when traveling on smooth, level
road.
•When stopping, listen and check for
unusual sounds, pulling to one side,
increased brake pedal travel or
“hard-to-push” brake pedal.
•If any slipping or changes in the
operation of your transaxle occurs,
check the transaxle fluid level.
•Check the automatic transaxle
P (Park) function.
•Check the parking brake.
•Check for fluid leaks under your vehi-
cle (water dripping from the air con-
ditioning system during or after use
is normal).
At least monthly:
•Check coolant level in the engine
coolant reservoir.
•Check the operation of all exterior
lights, including the stoplights, turn
signals and hazard warning flashers.
•Check the inflation pressures of all
tires including the spare for tires
that are worn, show uneven wear,
or are damaged.
•Check for loose wheel lug nuts.
Be careful when checking your
engine coolant level when the
engine is hot. This may result in
coolant being blown out of the
opening and cause serious
burns and other injuries.
WARNING

7-11
7
Maintenance
I:Inspect and if necessary, adjust, correct, clean or replace.
R:Replace or change.
*1:Adjust alternator and power steering (and water pump drive belt) 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 (350 miles) or before starting a long trip.
NORMAL MAINTENANCE SCHEDULE (FOR EUROPE)
Number of months or driving distance, whichever comes first
Months1224364860728496
Miles×1,0001020304050607080
Km×1,000153045607590105120
Drive belts *1At first, inspect at 90,000 km (60,000 miles) or 72 months
after that, inspect every 30,000 km (20,000 miles) or 24 months
Engine oil and
engine oil filter *2
Nu2.0 MPIRRRRRRRR
Theta
2.4 MPIRRRRRRRR2.4 GDI
2.0 T-GDIAt first, replace at 5,000 km (3,000 miles) or 6 months
after that, replace every 8,000 km (5,000 miles) or 6 months
Air cleaner filterIIRIIRII
MAINTENANCE
INTERVALS
MAINTENANCE
ITEM

Maintenance
7-12
NORMAL MAINTENANCE SCHEDULE (CONT.) (FOR EUROPE)
I:Inspect and if necessary, adjust, correct, clean or replace.
R:Replace or change.
*3:For your convenience, it can be replaced prior to it's interval when you do maintenance of other items.
*4:Inspect for excessive valve noise and/or engine vibration and adjust if necessary.We recommend that the system be checkedby an authorized HYUNDAI dealer.
*5:The fuel filter is considered to be maintenance free but periodic inspection is recommended for this maintenance scheduledepends on fuel quality. If there are some important matters like fuel flow restriction, surging, loss of power, hard starting prob-lem etc, we recommend replacing the fuel filter immediately regardless of maintenance schedule and consulting with an author-ized HYUNDAI dealer for details.
Number of months or driving distance, whichever comes first
Months1224364860728496
Miles×1,0001020304050607080
Km×1,000153045607590105120
Spark plugs *3Theta 2.4 MPIReplace every 45,000 km (28,000 miles)
Nu 2.0 MPI/
Theta 2.4 GDIReplace every 165,000 km (102,500 miles)
Va l ve c l e a r a n c e *4Theta 2.4 MPI/GDII
Va p o r h o s e a n d f u e l f i l l e r c a pII
Fuel tank air filter (if equipped)II
Va c u u m h o s eIIIIIIII
Fuel filter *5II
Fuel lines, hoses and connectionsII
Cooling system
Inspect “Coolant level adjustment and leak” every day
At first, inspect at 60,000 km (40,000 miles) or 48 months
after that, inspect every 30,000 km (20,000 miles) or 24 months
MAINTENANCE
INTERVALS
MAINTENANCE
ITEM

7-17
7
Maintenance
I:Inspect and if necessary, adjust, correct, clean or replace.
R:Replace or change.
*1:Adjust alternator and power steering (and water pump drive belt) 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 (350 miles) or before starting a long trip.
*3:Middle East includes Libya, Algeria, Morocco, Tunisia, Sudan, Egypt and Iran.
*4:If good quality gasolines meet Europe Fuel standards (EN228) or equivalents including fuel additives is not available, one bottle ofadditive is recommended. Additives are available from your authorized HYUNDAI dealer along with information on how to use them.Do not mix other additives.
NORMAL MAINTENANCE SCHEDULE (EXCEPT EUROPE)
Number of months or driving distance, whichever comes first
Months1224364860728496
Miles×1,0001020304050607080
Km×1,000153045607590105120
Drive belts *1IIII
Engine oil and engine
oil filter *2
For Middle
East, Brazil
Nu 2.0 MPI
Replace every 10,000 km (6,200 miles) or 12 monthsTheta 2.4 MPI
Theta 2.4 GDI
Except
Middle East
Nu 2.0 MPI
RRRRRRRRTheta 2.4 MPI
Theta 2.4 GDI
Theta 2.0 T-GDI At first, replace at 5,000 km (3,000 miles) or 6 months
after that, replace every 8,000 km (5,000 miles) or 6 months
Air cleaner filter
For China, India, Middle East *3RRRRRRRR
Except China,
India, Middle East *3IIRIIRII
Fuel additives *4Add every 5,000 km (3,000 miles) or 6 months
MAINTENANCE
INTERVALS
MAINTENANCE
ITEM

Maintenance
7-18
NORMAL MAINTENANCE SCHEDULE (CONT.) (EXCEPT EUROPE)
I:Inspect and if necessary, adjust, correct, clean or replace.
R:Replace or change.
*5:For your convenience, it can be replaced prior to it's interval when you do maintenance of other items.
*6:Inspect for excessive valve noise and/or engine vibration and adjust if necessary.We recommend that the system be checked by
an authorized HYUNDAI dealer.
*7:The fuel filter is considered to be maintenance free but periodic inspection is recommended for this maintenance schedule
depends on fuel quality. If there are some important matters like fuel flow restriction, surging, loss of power, hard starting problem
etc, we recommend replacing the fuel filter immediately regardless of maintenance schedule and consulting with an authorized
HYUNDAI dealer for details.
Number of months or driving distance, whichever comes first
Months1224364860728496
Miles×1,0001020304050607080
Km×1,000153045607590105120
Spark plugs *5
Theta 2.4 MPIReplace every 45,000 km (28,000 miles)
Nu 2.0 MPI/
Theta 2.4 GDIReplace every 165,000 km (102,500 miles)
Theta 2.0 T-GDIReplace every 75,000 km (59,000 miles) or 60 months *5
Va l ve c l e a r a n c e *6Theta 2.4 MPI/
Theta 2.4 GDI/
Theta 2.0 T-GDI
I
Va p o r h o s e a n d f u e l f i l l e r c a pII
Fuel tank air filter (if equipped)IRIR
Va c u u m h o s eIIIIIIII
Fuel filter *7IRIR
Fuel lines, hoses and connectionsII
MAINTENANCE
INTERVALS
MAINTENANCE
ITEM

7-23
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