2018 Hyundai Sonata Scheduled Maintenance

2-3
Safety system of your vehicle
• ALWAYS set up your mobile devices(i.e., MP3 players, phones, naviga-
tion units, etc.) when your vehicle is
parked or safely stopped.
ONLY use your mobile device when allowed by laws and when conditions
permit safe use. NEVER text or
email while driving. Most states have
laws prohibiting drivers from texting.
Some states and cities also prohibit
drivers from using handheld phones.
NEVER let the use of a mobile device distract you from driving. You
have a responsibility to your passen-
gers and others on the road to
always drive safely, with your hands
on the wheel as well as your eyes
and attention on the road.Control Your Speed
Excessive speed is a major factor in
crash injuries and deaths. Generally,
the higher the speed, the greater the
risk, but serious injuries can also
occur at lower speeds. Never drive
faster than is safe for current condi-
tions, regardless of the maximum
speed posted.
Keep Your Vehicle in Safe
Condition
Having a tire blowout or a mechanical
failure can be extremely hazardous. To
reduce the possibility of such prob-
lems, check your tire pressures and
condition frequently, and perform all
regularly scheduled maintenance.
2

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........................7-9
Normal Maintenance Schedule
(Gamma 1.6 T-GDI/Theta 2.0 T-GDI)..........................7-10
Maintenance Under Severe Usage Conditions
(Gamma 1.6 T-GDI/Theta 2.0 T-GDI)..........................7-13
Normal Maintenance Schedule (Theta 2.4 GDI) ......7-15
Maintenance Under Severe Usage Conditions
(Theta 2.4 GDI) .................................................................7-18
Explanation of Scheduled Maintenance Items ..7-20
Engine Oil and Filter.......................................................7-20
Drive Belts........................................................................\
.7-20
Fuel Filter ........................................................................\
..7-20
Fuel Lines, Fuel Hoses and Connections ..................7-20
Vapor Hose and Fuel Filler Cap ...................................7-20
Air Cleaner Filter .............................................................7-20
Spark Plugs .......................................................................7\
-20
Valve Clearance ...............................................................7-21
Cooling System ................................................................7-21
Engine Coolant .................................................................7-21 Automatic Transmission Fluid ......................................7-21
Ecoshift Dual Clutch Transmission Fluid ...................7-21
Brake hoses and Lines ..................................................7-22
Brake Fluid ........................................................................\
7-22
Parking Brake...................................................................7-22
Brake Discs, Pads, Calipers and Rotors .....................7-22
Exhaust Pipe and Muffler.............................................7-22
Suspension Mounting Bolts ..........................................7-22
Steering Gear Box, Linkage &
Boots/Lower Arm Ball Joint .........................................7-22
Drive Shafts and Boots .................................................7-22
Air Conditioning Refrigerant ........................................7-22
Engine Oil ..............................................................7-23
Checking the Engine Oil Level .....................................7-23
Checking the Engine Oil and Filter .............................7-25
Engine Coolant .....................................................7-26
Checking the Engine Coolant Level ............................7-26
Changing Engine Coolant ..............................................7-28
Brake Fluid ............................................................7-29
Checking the Brake Fluid Level ...................................7-29
Washer Fluid .........................................................7-30
Checking the Washer Fluid Level................................7-30
Parking Brake .......................................................7-30
Checking the Parking Brake .........................................7-30
7

7-6
Maintenance
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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
authorized HYUNDAI dealer. An
authorized 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 Owner's Handbook &
Warranty Information booklet.
Repairs and adjustments required as
a result of improper maintenance or
a lack of required maintenance are
not covered.
Owner Mainte
nance
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 authorized
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.
Certain modifications may also be in
violation of regulations established by
the U.S. Department of Transportation
and other federal or state agencies. Improper owner maintenance dur-
ing the warranty period may affect
warranty coverage. For details,
read the separate Owner's
Handbook & Warranty Information
booklet provided with the vehicle.
If you're unsure about any service
or maintenance procedure, have it
done by an authorized HYUNDAI
dealer.
NOTICE

7-21
7
Maintenance
Valve Clearance (if equipped)
Inspect for excessive valve noise
and/or engine vibration and adjust if
necessary. Have an authorized
HYUNDAI dealer perform the opera-
tion.
Cooling System
Check cooling system components,
such as radiator, coolant reservoir,
hoses and connections for leakage
and damage. Replace any damaged
parts.
Engine Coolant
The coolant should be changed at
the intervals specified in the mainte-
nance schedule.
Automatic Transmission Fluid
Automatic transmission fluid should
not be checked under normal usage
conditions. But in severe conditions,
the fluid should be changed at an
authorized HYUNDAI dealer in accor-
dance to the scheduled maintenance
at the beginning of this chapter.
Automatic transmission fluid
color is basically red.
As the vehicle is driven, the auto-
matic transmission fluid will begin
to look darker. This is a normal
condition and you should not
judge the need to replace the fluid
based upon the changed color.
Ecoshift dual clutch transmis-
sion Fluid
Inspect the Ecoshift dual clutch
transmission fluid according to the
maintenance schedule.
NOTICE
The use of a non-specified fluid
could result in transmission
malfunction and failure. Use
only the specified automatic
transmission fluid (refer to
"Recommended Lubricants and
Capacities" in chapter 8).
CAUTION

I-4
Emission Control System ...............................................7-85Crankcase Emission Control System .........................7-85
\Evaporative Emission Control System Including
Onboard Refueling Vapor Recovery (ORVR) .............7-85
Exhaust Emission Control System .............................7-86
Engine ........................................................................\
.......8-2
Engine compartment..................................................1-6, 7-3
Engine Coolant ...............................................................7-26 Changing Engine Coolant ..........................................7-28
Checking the Engine Coolant Level ..........................7-26
Engine Number ...............................................................8-11
Engine Oil .......................................................................7\
-23 Checking the Engine Oil and Filter ...........................7-25
Checking the Engine Oil Level ..................................7-23
Explanation of Scheduled Maintenance Items ...............7-20 Air Cleaner Filter .......................................................7-20
Air Conditioning Refrigerant .....................................7-22
Automatic Transmission Fluid ...................................7-21
Brake Discs, Pads, Calipers and Rotors .....................7-22
Brake Fluid .................................................................7-22
Brake hoses and Lines................................................7-22
Cooling System ..........................................................7-21
Drive Belts..................................................................7-20
Drive Shafts and Boots ..............................................7-22
Ecoshift Dual Clutch Transmission Fluid ..................7-21 Engine Coolant ...........................................................7-21
Engine Oil and Filter ..................................................7-20
Exhaust Pipe and Muffler...........................................7-22
Fuel Filter ...................................................................7-20
Fuel Lines, Fuel Hoses and Connections ...................7-20
Parking Brake .............................................................7-22
Spark Plugs.................................................................7-20
Steering Gear Box, Linkage & Boots/ Lower Arm Ball Joint .............................................7-22
Suspension Mounting Bolts .......................................7-22
Valve Clearance ..........................................................7-21
Vapor Hose and Fuel Filler Cap .................................7-20
Exterior features..............................................................3-52 Fuel Filler Door ..........................................................3-59
Hood ........................................................................\
...3-52
Smart Trunk ................................................................3-56
Trunk ........................................................................\
..3-53
Exterior overview (I) ........................................................1-2
Exterior overview (II) .......................................................1-3
Fuses ........................................................................\
.......7-56 Engine Compartment Panel Fuse Replacement .........7-58
Fuse/Relay Panel Description ....................................7-60
Instrument Panel Fuse Replacement ..........................7-57
Index
E
F

I-7
Owner Maintenance ..........................................................7-7Owner Maintenance Schedule......................................7-8
Parking Brake .................................................................7-30 Checking the Parking Brake ......................................7-30
Recommended Lubricants and Capacities ........................8-7 Recommended SAE Viscosity Number .......................8-9
Refrigerant Label ............................................................8-11
Reporting Safety Defects ................................................8-13 Scheduled Maintenance Services .....................................7-9
Maintenance Under Severe Usage Conditions (Gamma 1.6 T-GDI/Theta 2.0 T-GDI) ....................7-13
Maintenance Under Severe Usage Conditions (Theta 2.4 GDI).......................................................7-18
Normal Maintenance Schedule (Gamma 1.6 T-GDI/Theta 2.0 T-GDI) ....................7-10
Normal Maintenance Schedule (Theta 2.4 GDI) .......7-15
Seat Belts ........................................................................\
2-22 Additional Seat Belt Safety Precautions ....................2-30
Care of Seat Belts .......................................................2-33
Seat Belt Restraint System .........................................2-24
Seat Belt Safety Precautions ......................................2-22
Seat Belt Warning Light .............................................2-23
Seats ........................................................................\
..........2-4 Front Seats ....................................................................2-6
Head Restraints ..........................................................2-15
Rear Seats ...................................................................2-12
Safety Precautions ........................................................2-5
Seat Warmers and Air Ventilation Seats.....................2-19
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Index
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