2015 Hyundai Sonata maintenance

7-3
7
Maintenance
ENGINE COMPARTMENT
1. Engine coolant reservoir
2. Radiator cap
3. Brake fluid reservoir
4. Air cleaner
5. Engine oil dipstick
6. Engine oil filler cap
7. Windscreen washer fluid reservoir
8. Fuse box
9. Battery
OLF014008R
■Petrol Engine (Theta II 2.0L T-GDI)
The actual engine room in the vehicle may differ from the illustration.

7-4
Maintenance
1. Engine coolant reservoir
2. Radiator cap
3. Brake fluid reservoir
4. Air cleaner
5. Engine oil dipstick
6. Engine oil filler cap
7. Windscreen washer fluid reservoir
8. Fuse box
9. Battery
OLF014006R
■Petrol Engine (Theta II 2.4L GDI)
The actual engine room in the vehicle may differ from the illustration.

7-5
7
Maintenance
MAINTENANCE SERVICES
You should exercise the utmost care
to prevent damage to your vehicle
and injury to yourself whenever per-
forming any maintenance or inspec-
tion procedures.
We recommend you have your vehi-
cle maintained and repaired by an
authorised HYUNDAI dealer. An
authorised HYUNDAI dealer meets
HYUNDAI’s high service quality
standards and receives technical
support from HYUNDAI in order to
provide you with a high level of serv-
ice satisfaction.Owner’s responsibility
Maintenance service and record reten-
tion are the owner’s responsibility.
You should retain documents that
show proper maintenance has been
performed on your vehicle in accor-
dance with the scheduled mainte-
nance service charts shown on the
following pages. You need this infor-
mation to establish your compliance
with the servicing and maintenance
requirements of your vehicle war-
ranties.
Detailed warranty information is pro-
vided in your Service Passport.
Repairs and adjustments required as
a result of improper maintenance or
a lack of required maintenance are
not covered.
Owner maintenance precautions
Inadequate, incomplete or insuffi-
cient servicing may result in opera-
tional problems with your vehicle that
could lead to vehicle damage, an
accident, or personal injury. This
chapter provides instructions only for
the maintenance items that are easy
to perform. Several procedures can
be done only by an authorised
HYUNDAI dealer with special tools.
Your vehicle should not be modified
in any way. Such modifications may
adversely affect the performance,
safety or durability of your vehicle
and may, in addition, violate condi-
tions of the limited warranties cover-
ing the vehicle.
Improper owner maintenance dur-
ing the warranty period may affect
warranty coverage. For details,
read the separate Service
Passport provided with the vehi-
cle. If you are unsure about any
servicing or maintenance proce-
dure, we recommend that the sys-
tem be serviced by an authorised
HYUNDAI dealer.
NOTICE

7-6
Maintenance
OWNER MAINTENANCE
The following lists are vehicle checks
and inspections that should be per-
formed by the owner or an authorised
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 labour, parts 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 autho-
rised 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 tyres (front and
back) to prevent the vehicle
from moving.
Remove loose clothing or jew-
ellery 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.

7-7
7
Maintenance
Owner maintenance schedule
When you stop for fuel:
• Check the engine oil level.
• Check coolant level in the engine
coolant reservoir.
• Check the windscreen washer fluid
level.
• Check for low or under-inflated
tyres.
Whilst 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 travelling 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
tyres including the spare for tyres
that are worn, show uneven wear,
or are damaged.
• Check for loose wheel 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

7-8
Maintenance
At least twice a year:
• Check radiator, heater and air condi-
tioning hoses for leaks or damage.
• Check windscreen washer spray
and wiper operation. Clean wiper
blades with clean cloth dampened
with washer fluid.
• Check headlamp alignment.
• Check muffler, exhaust pipes,
shields and clamps.
• Check the seat belts for wear and
function.
At least once a year:
• Clean body and door drain holes.
• Lubricate door hinges and bonnet
hinges.
• Lubricate door and bonnet locks
and latches.
• Lubricate door rubber weather
strips.
• Check the air conditioning system.
• Inspect and lubricate automatic
transaxle linkage and controls.
• Clean the battery and terminals.
• Check the brake fluid level.

7-9
7
Maintenance
SCHEDULED MAINTENANCE SERVICES
Follow the Normal Maintenance Schedule if the vehicle is usually operated where none of the following conditions apply.
If any of the following conditions apply, you must follow the Maintenance Under Severe Usage Conditions.
• Repeated short distance driving.
• Driving in dusty conditions or sandy areas.
• Extensive use of brakes.
• Driving in areas where salt or other corrosive materials are used.
• Driving on rough or muddy roads.
• Driving in mountainous areas.
• Extended periods of idling or low speed operation.
• Driving for a prolonged period in cold temperatures and/or extremely humid climates.
• More than 50% driving in heavy city traffic during hot weather above 32°C (90°F).
If your vehicle is operated under the above conditions, you should inspect, replace or refill more frequently than the
following Normal Maintenance Schedule. After the periods or distance shown in the chart, continue to follow the pre-
scribed maintenanec intervals.

Maintenance
7-10 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 or before starting a long trip.
*3: If good quality petrols meet Europe Fuel standards (EN228) or equivalents including fuel additives is not available, one bottle
of additive is recommended. Additives are available from your authorised HYUNDAI dealer along with information on how to
use them. Do not mix other additives.
NORMAL MAINTENANCE SCHEDULE
Number of months or driving distance, whichever comes first
Months1224364860728496
Km×1,000153045607590105120
Drive belts *1IIII
Engine oil and engine oil filter *2Theta 2.4 GDI RRRRRRRR
Theta 2.0 T-GDI At first, replace at 1,500 km or 1 month
after that, replace every 7,500 km or 6 months
Air cleaner filterIIRIIRII
Fuel additives *3Add every 15,000 km or 12 months
MAINTENANCE
INTERVALS
MAINTENANCE
ITEM