maintenance schedule Hyundai Sonata

723
Maintenance
Changing the engine oil and filterHave engine oil and filter changed by an
authorized HYUNDAI dealer according to
the Maintenance Schedule at the begin-
ning of this section.
CALIFORNIA
PROPOSI-
TION 65 WARNING
Engine oil contains chemicals
known to the State of California to
cause cancer, birth defects, and
reproductive harm.
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
contains chemicals that have
caused cancer in laboratory ani-
mals. Always protect your skin by
washing your hands thoroughly
with soap and warm water as soon
as possible after handling used oil.

Maintenance26
7
Changing the coolantHave coolant changed by an authorized
HYUNDAI dealer according to the
Maintenance Schedule at the beginning
of this section.
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 or clutch (if equipped)
checked by an authorized HYUNDAI
dealer.
OYF079007N
BRAKE/CLUTCH FLUID
WARNING -
Coolant
 Do not use radiator coolant or
antifreeze in the washer fluid
reservoir.
 Radiator coolant can severely obscure visibility when sprayed
on the windshield and may cause
loss of vehicle control or damage
to paint and body trim.
CAUTION
Put a thick cloth or fabric aroundthe radiator cap before refilling thecoolant in order to prevent the coolant from overflowing intoengine parts such as generator.
WARNING
The cooling fan is controlled by
engine coolant temperature and
may sometimes operate even when
the engine is not running. Use
extreme caution when working near
the blades of the coolant fan so that
you are not injured by a rotating fan
blade. As the engine coolant tem-
perature decreases, the fan will
automatically shut off. This is a nor-
mal condition.

Maintenance30
7Replace the filter according to the
Maintenance Schedule.If the vehicle is operated in extremely
dusty or sandy areas, replace the ele-ment more often than the usual recom-mended intervals. (Refer to “Maintenance under severe usage condi-tions” in this section.)
Filter inspectionThe climate control air filter should be
replaced according to the Maintenance
Schedule. If the vehicle is operated in
severely air-polluted cities or on dusty
rough roads for a long period, it should
be inspected more frequently and
replaced earlier. When you replace the
climate control air filter, replace it per-
forming the following procedure, and be
careful to avoid damaging other compo-
nents.
Filter replacement1. Open the glove box and remove the support strap (1).
CAUTION
 Do not drive with the air cleaner removed; this will result in exces-sive engine wear.
 When removing the air cleaner fil- ter, be careful that dust or dirtdoes not enter the air intake, ordamage may result.
 Use a HYUNDAI genuine part. Use of non-genuine parts could dam-age the air flow sensor.
CLIMATE CONTROL AIR FILTER
OYF079014

773
Maintenance
EMISSION CONTROL SYSTEMThe emission control system of your
vehicle is covered by a written limited
warranty. Please see the warranty infor-
mation contained in the Owner’s
Handbook & Warranty Information book-
let in your vehicle.
Your vehicle is equipped with an emis-
sion control system to meet all applicable
emission regulations.
There are three emission control sys-
tems, as follows.
(1) Crankcase emission control system
(2) Evaporative emission control system
(3) Exhaust emission control system
In order to assure the proper function of
the emission control systems, it is rec-
ommended that you have your car
inspected and maintained by an author-
ized HYUNDAI dealer in accordance with
the maintenance schedule in this manu-
al.Caution for the Inspection and
Maintenance Test (With Electronic
Stability Control (ESC) system)
 To prevent the vehicle from misfir-
ing during dynamometer testing,
turn the Electronic Stability Control
(ESC) system off by pressing the
ESC switch.
 After dynamometer testing is com- pleted, turn the ESC system back on
by pressing the ESC switch again.
1. Crankcase emission control systemThe positive crankcase ventilation sys-
tem is employed to prevent air pollution
caused by blow-by gases being emitted
from the crankcase. This system supplies
fresh filtered air to the crankcase through
the air intake hose. Inside the crankcase,
the fresh air mixes with blow-by gases,
which then pass through the PCV valve
into the induction system.2. Evaporative emission control(including ORVR: Onboard
Refueling Vapor Recovery)
systemThe Evaporative Emission Control
System is designed to prevent fuel
vapors from escaping into the atmos-
phere.
(The ORVR system is designed to allow
the vapors from the fuel tank to be
loaded into a canister while refueling at
the gas station, preventing the escape of
fuel vapors into the atmosphere.)

Index4I
Displays, see instrument cluster ··················\
··················\
4-50
Display illumination, see instrument panelillumination ··················\
··················\
··················\
·········4-51
Door locks··················\
··················\
··················\
················4-18 Central door lock switch ··················\
··················\
·······4-19
Child-protector rear door lock ··················\
················4-21
Drink holders, see cup holders ··················\
··················\
4-107
Driver's 3-point system with emergency locking retractor ··················\
··················\
··················\
···············3-19
Driver's air bag··············\
··················\
··················\
·············3-49
Driving at night··················\
··················\
··················\
········5-39
Driving in flooded areas ··················\
··················\
············5-40
Driving in the rain ··················\
··················\
··················\
···5-40
Economical operation ··················\
··················\
················5-36
EDR, see Vehicle data collection and event data recorders ··················\
··················\
··················\
················1-6
Electronic stability control (ESC) ··················\
···············5-26
Electric chromic mirror (ECM) with HomeLink system and compass ··················\
··················\
··················\
········4-41
Electric power steering ··················\
··················\
··············4-39
Emergency starting ··················\
··················\
··················\
····6-4 Jump starting ··················\
··················\
··················\
·········6-4
Push starting ··················\
··················\
··················\
··········6-5
Emergency while driving··················\
··················\
·············6-2 Emission control system ··················\
··················\
············7-73
Crankcase emission control system ··················\
········7-73
Evaporative emission control System ··················\
·····7-73
Exhaust emission control system ··················\
············7-74
Engine compartment ··················\
··················\
············2-4, 7-2
Engine coolant ··················\
··················\
··················\
·········7-24
Engine number ··················\
··················\
··················\
···········8-7
Engine oil ··················\
··················\
··················\
·················7-22\
Engine overheats··················\
··················\
··················\
········6-6
Engine start/stop button ··················\
··················\
···············5-7
Engine temperature gauge ··················\
··················\
·········4-52
Engine will not start··················\
··················\
··················\
···6-3
Evaporative emission control System ··················\
·········7-73
Exhaust emission control system··················\
·················7-74\
Explanation of scheduled maintenance items ···············7-19
Exterior care··················\
··················\
··················\
·············7-67
Flat tire ··················\
··················\
··················\
··················\
···6-12 Changing tires ··················\
··················\
··················\
·····6-13
Compact spare tire ··················\
··················\
················6-18
Jack and tools ··················\
··················\
··················\
······6-12
Removing and storing the spare tire ··················\
·······6-13
Floor mat anchor(s)··················\
··················\
··················\
4-110
Fluid Washer fluid ··················\
··················\
··················\
········7-27
Brakes/clutch fluid ··················\
··················\
················7-26E
F

I7
Index
MaintenanceExplanation of scheduled maintenance items ···········7-19
Maintenance services ··················\
··················\
··············7-4
Maintenance under severe usage conditions ·············7-18
Normal maintenance schedule ··················\
··················\
7-8
Owner maintenance··················\
··················\
·················7-5
Scheduled maintenance service ··················\
················7-7
Tire maintenance ··················\
··················\
··················\
·7-42
Maintenance services ··················\
··················\
··················\
·7-4
Manual climate control system··················\
··················\
··4-83 Air conditioning ··················\
··················\
··················\
··4-89
Climate control air filter··················\
··················\
········4-92
Heating and air conditioning··················\
··················\
·4-84
Manual transaxle ··················\
··················\
··················\
······5-11
Memory fuse ··················\
··················\
··················\
············7-52
Mirrors ··················\
··················\
··················\
··················\
···4-41 Day/night rearview mirror ··················\
··················\
····4-41
Electric chromic mirror (ECM) with Homelink systemand compass ··················\
··················\
··················\
······4-41
Inside rearview mirror··················\
··················\
···········4-41
Outside rearview mirror ··················\
··················\
········4-48
Moonroof, see sunroof ··················\
··················\
·····4-32, 4-35
Multi box ··················\
··················\
··················\
···············4-106
Multi fuse ··················\
··················\
··················\
·················7-53\
Neck restraints, see headrest ··················\
················3-7, 3-1\
1
Occupant classification system··················\
··················\
··3-44
Odometer ··················\
··················\
··················\
·················4-54\
Oil (Engine) ··················\
··················\
··················\
·············7-22
Outside rearview mirror··················\
··················\
·············4-48
Overheats ··················\
··················\
··················\
··················\
·6-6
Owner maintenance ··················\
··················\
··················\
···7-5
Paddle shifter ··················\
··················\
··················\
···········5-17
Panorama sunroof ··················\
··················\
··················\
····4-35
Parking brake inspect··················\
··················\
·················7-28\
Parking brake ··················\
··················\
··················\
···········5-22
Passenger's front air bag ··················\
··················\
············3-49
Power brakes··················\
··················\
··················\
············5-21
Power outlet ··················\
··················\
··················\
···········4-108
Power window lock button ··················\
··················\
········4-27
Pre-tensioner seat belt··················\
··················\
················3-23
Push starting··················\
··················\
··················\
···············6-5M
NOP

Index8I
Rear seat··················\
··················\
··················\
··················\
·3-11
Rearview camera ··················\
··················\
··················\
·····4-71
Recommended cold tire inflation pressures ··················\
7-37
Recommended lubricants and capacities ··················\
·······8-4Recommended SAE viscosity number··················\
······8-5
Remote keyless entry ··················\
··················\
·················4-12\
Replacement light bulb ··················\
··················\
··············7-59
Reporting safety defects ··················\
··················\
··············8-9
Road warning ··················\
··················\
··················\
·············6-2
Rocking the vehicle ··················\
··················\
··················\
·5-38
Scheduled maintenance service ··················\
··················\
···7-7 Normal maintenance schedule ··················\
··················\
7-8
Maintenance under severe usage conditions ·············7-18
Seat belts ··················\
··················\
··················\
··················\
3-17 Driver's 3-point system with emergency lockingretractor ··················\
··················\
··················\
·············3-19
Front passenger and rear seat 3-point system with combination locking retractor ··················\
···············3-21
Pre-tensioner seat belt ··················\
··················\
···········3-23
Seat belt warning··················\
··················\
··················\
·3-18
Seat warmer ··················\
··················\
··················\
······3-9, 3-12
Seatback pocket ··················\
··················\
··················\
·······3-10 Seats ··················\
··················\
··················\
··················\
·········3-2
Armrest ··················\
··················\
··················\
················3-13
Headrest ··················\
··················\
··················\
·······3-7, 3-11
Folding the rear seat ··················\
··················\
··············3-14
Front seat adjustment - manual ··················\
·················3-4
Front seat adjustment - power ··················\
··················\
·3-5
Lumbar support ··················\
··················\
··················\
·····3-7
Rear seat ··················\
··················\
··················\
··············3-11
Seatback pocket··················\
··················\
··················\
···3-10
Seat warmer ··················\
··················\
··················\
·3-9, 3-12
Shift lock system ··················\
··················\
··················\
·····5-18
Side impact air bag ··················\
··················\
··················\
··3-53
Smart key ··················\
··················\
··················\
··················\
·4-6
Smooth cornering··················\
··················\
··················\
·····5-39
Snow tires ··················\
··················\
··················\
················5-42
Spare tire Compact spare tire ··················\
··················\
················6-18
Compact spare tire replacement ··················\
··············7-42
Removing and storing the spare tire ··················\
·······6-13
Special driving conditions ··················\
··················\
·········5-38 Driving at night ··················\
··················\
··················\
···5-39
Driving in flooded areas··················\
··················\
········5-40
Driving in the rain ··················\
··················\
·················5-40\
Hazardous driving conditions ··················\
·················5-38\
Highway driving··················\
··················\
··················\
··5-41
Rocking the vehicle··················\
··················\
···············5-38
Smooth cornering ··················\
··················\
··················\
5-39
Speedometer··················\
··················\
··················\
·············4-51RS