2015 Hyundai Sonata vapor hose and fuel filler cap

F19
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 ....................................7-10
Maintenance Under Severe Usage Conditions ........7-20
Explanation of Scheduled Maintenance Items ..7-21
Engine Oil and Filter.......................................................7-21
Drive Belts........................................................................\
.7-21
Fuel Filter ........................................................................\
..7-21
Fuel Lines, Fuel Hoses and Connections ..................7-21
Vapor Hose and Fuel Filler Cap ...................................7-21
Air Cleaner Filter .............................................................7-21
Spark Plugs .......................................................................7\
-21
Valve Clearance ...............................................................7-22
Cooling System ................................................................7-22
Engine Coolant .................................................................7-22
Automatic Transmission Fluid ......................................7-22
Dual Clutch Transmission Fluid ....................................7-22Brake hoses and Lines ..................................................7-23
Brake Fluid ........................................................................\
7-23
Parking Brake...................................................................7-23
Brake Discs, Pads, Calipers and Rotors .....................7-23
Exhaust Pipe and Muffler.............................................7-23
Suspension Mounting Bolts ..........................................7-23
Steering Gear Box, Linkage &
Boots/Lower Arm Ball Joint .........................................7-23
Drive Shafts and Boots .................................................7-23
Air Conditioning Refrigerant ........................................7-23
Engine Oil ..............................................................7-24
Checking the Engine Oil Level .....................................7-24
Checking the Engine Oil and Filter .............................7-26
Engine Coolant .....................................................7-27
Checking the Engine Coolant Level ............................7-27
Changing Engine Coolant ..............................................7-29
Brake Fluid ............................................................7-30
Checking the Brake Fluid Level ...................................7-30
Washer Fluid .........................................................7-31
Checking the Washer Fluid Level................................7-31
Parking Brake .......................................................7-31
Checking the Parking Brake .........................................7-31
Air Cleaner ............................................................7-32
Filter Replacement ..........................................................7-32
F19
7Maintenance

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 ....................................7-10
Maintenance Under Severe Usage Conditions ........7-20
Explanation of Scheduled Maintenance Items ..7-21
Engine Oil and Filter.......................................................7-21
Drive Belts........................................................................\
.7-21
Fuel Filter ........................................................................\
..7-21
Fuel Lines, Fuel Hoses and Connections ..................7-21
Vapor Hose and Fuel Filler Cap ...................................7-21
Air Cleaner Filter .............................................................7-21
Spark Plugs .......................................................................7\
-21
Valve Clearance ...............................................................7-22
Cooling System ................................................................7-22
Engine Coolant .................................................................7-22
Automatic Transmission Fluid ......................................7-22
Dual Clutch Transmission Fluid ....................................7-22
Brake hoses and Lines ..................................................7-23
Brake Fluid ........................................................................\
7-23
Parking Brake...................................................................7-23Brake Discs, Pads, Calipers and Rotors .....................7-23
Exhaust Pipe and Muffler.............................................7-23
Suspension Mounting Bolts ..........................................7-23
Steering Gear Box, Linkage &
Boots/Lower Arm Ball Joint .........................................7-23
Drive Shafts and Boots .................................................7-23
Air Conditioning Refrigerant ........................................7-23
Engine Oil ..............................................................7-24
Checking the Engine Oil Level .....................................7-24
Checking the Engine Oil and Filter .............................7-26
Engine Coolant .....................................................7-27
Checking the Engine Coolant Level ............................7-27
Changing Engine Coolant ..............................................7-29
Brake Fluid ............................................................7-30
Checking the Brake Fluid Level ...................................7-30
Washer Fluid .........................................................7-31
Checking the Washer Fluid Level................................7-31
Parking Brake .......................................................7-31
Checking the Parking Brake .........................................7-31
Air Cleaner ............................................................7-32
Filter Replacement ..........................................................7-32
Climate Control Air Filter ....................................7-34
Filter Inspection ...............................................................7-34
7

7
Maintenance
7-11
Normal Maintenance Schedule (CONT.)
37,500 miles (60,000 km) or 30 months
❑Inspect air cleaner filter
❑Inspect vacuum hose
❑Inspect intercooler, in/out hose, air intake hose
- Turbo GDI (Every 6,200miles (10,000km))
❑Inspect dual clutch transmission fluid (if equipped)
❑Replace engine oil and filter (2.4 GDI) *3
(37,500 miles (60,000 km) or 60 months)
❑ Add fuel additive *4 (37,500 miles (60,000 km) or 60 months)
*1Fuel filter & Fuel tank air filter are considered to be maintenance free\
but peri-
odic inspection is recommended for this maintenance schedule depends on
fuel quality. If there are some important safety matters like fuel flow restric-
tion, surging, loss of power, hard starting problem etc, replace the fuel filter
immediately regardless of maintenance schedule and consult an authorized
HYUNDAI dealer for details.
*
3Engine oil (1.6 TGDI/2.0 TGDI) At first, replace at 3,000 miles (5,000 km) or
6 months, after that, every 5,000 miles (8,000 km) or 6 months.
*
4If TOP TIER Detergent Gasoline is not available, one bottle of additive is rec-
ommended. Additives are available from your authorized HYUNDAI dealer
along with information on how to use them. Do not mix other additives.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or replace.
30,000 miles (48,000 km) or 24 months
❑Inspect vacuum hose
❑Inspect air conditioning refrigerant
❑Inspect brake hoses and lines
❑Inspect drive shafts and boots
❑Inspect exhaust pipe and muffler
❑Inspect front brake disc/pads, calipers
❑Inspect rear brake disc/pads
❑Inspect steering gear box, linkage & boots/lower arm ball joint,
upper arm ball joint
❑Inspect suspension mounting bolts
❑Inspect brake fluid
❑Inspect fuel filter *1
❑Inspect fuel cap, fuel lines, fuel hoses and connections
❑Inspect fuel tank air filter (if equipped) *1
❑Inspect parking brake
❑Inspect vapor hose and fuel filler cap
❑Inspect intercooler, in/out hose, air intake hose
- Turbo GDI (Every 6,200miles (10,000km))
❑ Replace climate control air filter (for evaporator and blower unit)
❑Replace air cleaner filter
❑Replace engine oil and filter (2.4 GDI) *3
(30,000 miles (48,000 km) or 48 months)
❑ Add fuel additive *4 (30,000 miles (48,000 km) or 48 months)

7
Maintenance
7-13
60,000 miles (96,000 km) or 48 months
❑Inspect vacuum hose
❑Inspect air conditioning refrigerant
❑Inspect brake hoses and lines
❑Inspect drive shafts and boots
❑Inspect exhaust pipe and muffler
❑Inspect front brake disc/pads, calipers
❑Inspect rear brake disc/pads
❑Inspect steering gear box, linkage & boots/lower arm ball joint,
upper arm ball joint
❑ Inspect suspension mounting bolts
❑Inspect brake fluid
❑Inspect fuel filter *1
❑Inspect fuel cap, fuel lines, fuel hoses and connections
❑Inspect fuel tank air filter (if equipped) *1
❑Inspect parking brake
❑Inspect vapor hose and fuel filler cap
❑Inspect valve clearance (if equipped) *2
(Every 60,000 miles (96,000 km) or 72 months)
❑Inspect drive belts
(First, 60,000 miles (96,000 km) or 72 months
after every 15,000 miles (24,000 km) or 24 months)
❑ Inspect intercooler, in/out hose, air intake hose
- Turbo GDI (Every 6,200miles (10,000km))
❑ Replace climate control air filter (for evaporator and blower unit)
❑Replace air cleaner filter
(Continued)
67,500 miles (108,000 km) or 54 months
❑Inspect air cleaner filter
❑Inspect vacuum hose
❑Inspect intercooler, in/out hose, air intake hose
- Turbo GDI (Every 6,200miles (10,000km))
❑Replace engine oil and filter (2.4 GDI) *3
(67,500 miles (108,000 km) or 108 months)
❑ Add fuel additive *4 (67,500 miles (108,000 km) or 108 months)
Normal Maintenance Schedule (CONT.)
*1Fuel filter & Fuel tank air filter are considered to be maintenance free\
but peri-
odic inspection is recommended for this maintenance schedule depends on
fuel quality. If there are some important safety matters like fuel flow restric-
tion, surging, loss of power, hard starting problem etc, replace the fuel filter
immediately regardless of maintenance schedule and consult an authorized
HYUNDAI dealer for details.
*
2Inspect for excessive tappet noise and/or engine vibration and adjust if nec-
essary.
*
3Engine oil (16. TGDI/2.0 TGDI) At first, replace at 3,000 miles (5,000 km) or
6 months, after that, every 5,000 miles (8,000 km) or 6 months.
*
4If TOP TIER Detergent Gasoline is not available, one bottle of additive is rec-
ommended. Additives are available from your authorized HYUNDAI dealer
along with information on how to use them. Do not mix other additives.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or replace.
(Continued)
❑Replace engine oil and filter (2.4 GDI) *3
(60,000 miles (96,000 km) or 96 months)
❑Replace coolant (First, 60,000 miles (96,000 km) or 60 months
after every 30,000 miles (48,000 km) or 24 months)
❑ Add fuel additive *4 (60,000 miles (96,000 km) or 96 months)

7
Maintenance
7-15
Normal Maintenance Schedule (CONT.)
97,500 miles (156,000 km) or 78 months
❑Inspect air cleaner filter
❑Inspect vacuum hose
❑Inspect intercooler, in/out hose, air intake hose
- Turbo GDI (Every 6,200miles (10,000km))
❑Replace engine oil and filter (2.4 GDI) *3
(97,500 miles (156,000 km) or 156 months)
❑ Add fuel additive *4 (97,500 miles (156,000 km) or 156 months)
90,000 miles (144,000 km) or 72 months
❑Inspect vacuum hose
❑Inspect air conditioning refrigerant
❑Inspect brake hoses and lines
❑Inspect drive shafts and boots
❑Inspect exhaust pipe and muffler
❑Inspect front brake disc/pads, calipers
❑Inspect rear brake disc/pads
❑Inspect steering gear box, linkage & boots/lower arm ball joint,
upper arm ball joint
❑ Inspect suspension mounting bolts
❑Inspect brake fluid
❑Inspect fuel filter *1
❑Inspect fuel cap, fuel lines, fuel hoses and connections
❑Inspect fuel tank air filter (if equipped) *1
❑Inspect parking brake
❑Inspect vapor hose and fuel filler cap
❑Inspect drive belts (First, 60,000 miles (96,000 km) or 72 months
after every 15,000 miles (24,000 km) or 24 months)
❑ Inspect intercooler, in/out hose, air intake hose
- Turbo GDI (Every 6,200miles (10,000km))
❑ Replace climate control air filter (for evaporator and blower unit)
❑Replace air cleaner filter
❑Replace engine oil and filter (2.4 GDI) *3
(90,000 miles (144,000 km) or 144 months)
❑Replace spark plugs (iridium coated), (1.6TGDI/2.0TGDI)
(Continued)
*1Fuel filter & Fuel tank air filter are considered to be maintenance free\
but peri-
odic inspection is recommended for this maintenance schedule depends on
fuel quality. If there are some important safety matters like fuel flow restric-
tion, surging, loss of power, hard starting problem etc, replace the fuel filter
immediately regardless of maintenance schedule and consult an authorized
HYUNDAI dealer for details.
*
3Engine oil (1.6 TGDI/2.0 TGDI) At first, replace at 3,000 miles (5,000 km) or
6 months, after that, every 5,000 miles (8,000 km) or 6 months.
*
4If TOP TIER Detergent Gasoline is not available, one bottle of additive is rec-
ommended. Additives are available from your authorized HYUNDAI dealer
along with information on how to use them. Do not mix other additives.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or replace.
(Continued)
❑Replace coolant (First, 60,000 miles (96,000 km) or 60 months
after every 30,000 miles (48,000 km) or 24 months)
❑ Add fuel additive *4 (90,000 miles (144,000 km) or 144 months)

7
Maintenance
7-17
Normal Maintenance Schedule (CONT.)
120,000 miles (192,000 km) or 96 months
❑Inspect vacuum hose
❑Inspect air conditioning refrigerant
❑Inspect brake hoses and lines
❑Inspect drive shafts and boots
❑Inspect exhaust pipe and muffler
❑Inspect front brake disc/pads, calipers
❑Inspect rear brake disc/pads
❑Inspect steering gear box, linkage & boots/lower arm ball joint,
upper arm ball joint
❑ Inspect suspension mounting bolts
❑Inspect brake fluid
❑Inspect fuel filter *1
❑Inspect fuel cap, fuel lines, fuel hoses and connections
❑Inspect fuel tank air filter (if equipped) *1
❑Inspect parking brake
❑Inspect vapor hose and fuel filler cap
❑Inspect valve clearance (if equipped) *2
(Every 60,000 miles (96,000 km) or 72 months)
❑Inspect drive belts (First, 60,000 miles (96,000 km) or 72 months
after every 15,000 miles (24,000 km) or 24 months)
❑ Inspect intercooler, in/out hose, air intake hose
- Turbo GDI (Every 6,200miles (10,000km))
❑ Replace climate control air filter (for evaporator and blower unit)
❑Replace air cleaner filter
❑Replace engine oil and filter (2.4 GDI) *3
(120,000 miles (192,000 km) or 192 months)
(Continued)
*1Fuel filter & Fuel tank air filter are considered to be maintenance free\
but period-
ic inspection is recommended for this maintenance schedule depends on fuel
quality. If there are some important safety matters like fuel flow restriction, surg-
ing, loss of power, hard starting problem etc, replace the fuel filter immediately
regardless of maintenance schedule and consult an authorized HYUNDAI deal-
er for details.
*
2Inspect for excessive tappet noise and/or engine vibration and adjust if necessary.
*3Engine oil (1.6 TGDI/2.0 TGDI) At first, replace at 3,000 miles (5,000 km) or 6
months, after that, every 5,000 miles (8,000 km) or 6 months.
*
4If TOP TIER Detergent Gasoline is not available, one bottle of additive is recom-
mended. Additives are available from your authorized HYUNDAI dealer along with
information on how to use them. Do not mix other additives.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or replace.
127,500 miles (204,000 km) or 102 months
❑ Inspect air cleaner filter
❑Inspect vacuum hose
❑Inspect intercooler, in/out hose, air intake hose
- Turbo GDI (Every 6,200miles (10,000km))
❑Replace engine oil and filter (2.4 GDI) *3
(127,500 miles (204,000 km) or 204 months)
❑ Add fuel additive *4 (127,500 miles (204,000 km) or 204 months)
(Continued)
❑Replace coolant (First, 60,000 miles (96,000 km) or 60 months
after every 30,000 miles (48,000 km) or 24 months)
❑ Add fuel additive *4 (120,000 miles (192,000 km) or 192 months)

7
Maintenance
7-19
150,000 miles (240,000 km) or 120 months
❑Inspect vacuum hose
❑Inspect air conditioning refrigerant
❑Inspect brake hoses and lines
❑Inspect drive shafts and boots
❑Inspect exhaust pipe and muffler
❑Inspect front brake disc/pads, calipers
❑Inspect rear brake disc/pads
❑Inspect steering gear box, linkage & boots/lower arm ball joint,
upper arm ball joint
❑ Inspect suspension mounting bolts
❑Inspect brake fluid
❑Inspect fuel filter *1
❑Inspect fuel lines, fuel hoses and connections
❑Inspect fuel tank air filter (if equipped) *1
❑Inspect parking brake
❑Inspect vapor hose and fuel filler cap
❑Inspect drive belts
(First, 60,000 miles (96,000 km) or 72 months
after every 15,000 miles (24,000 km) or 24 months)
❑ Inspect intercooler, in/out hose, air intake hose
- Turbo GDI (Every 6,200miles (10,000km))
❑Inspect dual clutch transmission fluid (if equipped)
❑ Replace climate control air filter (for evaporator and blower unit)
❑Replace air cleaner filter
(Continued)
(Continued)
❑Replace engine oil and filter (2.4 GDI) *3
(150,000 miles (240,000 km) or 240 months)
❑Replace coolant (First, 60,000 miles (96,000 km) or 60 months
after every 30,000 miles (48,000 km) or 24 months)
❑ Add fuel additive *4 (150,000 miles (240,000 km) or 240 months)
Normal Maintenance Schedule (CONT.)
No check, No service required
❑Automatic transmission fluid (if equipped)
*1Fuel filter & Fuel tank air filter are considered to be maintenance free\
but peri-
odic inspection is recommended for this maintenance schedule depends on
fuel quality. If there are some important safety matters like fuel flow restric-
tion, surging, loss of power, hard starting problem etc, replace the fuel filter
immediately regardless of maintenance schedule and consult an authorized
HYUNDAI dealer for details.
*
3Engine oil (1.6 TGDI/2.0 TGDI) At first, replace at 3,000 miles (5,000 km) or
6 months, after that, every 5,000 miles (8,000 km) or 6 months.
*
4If TOP TIER Detergent Gasoline is not available, one bottle of additive is rec-
ommended. Additives are available from your authorized HYUNDAI dealer
along with information on how to use them. Do not mix other additives.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or replace.

7-21
7
Maintenance
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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
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. Fuel filters
should be installed by an authorized
HYUNDAI dealer.
Fuel Lines, Fuel Hoses and
Connections
Check the fuel lines, fuel hoses and
connections for leakage and dam-
age. Have an authorized HYUNDAI
dealer replace any damaged or leak-
ing parts immediately.
Vapor Hose and Fuel Filler
Cap
The vapor hose and fuel filler cap
should be inspected at those inter-
vals specified in the maintenance
schedule. Make sure a new vapor
hose or fuel filler cap is correctly
replaced.
Air Cleaner Filter
A genuine HYUNDAI air cleaner filter
is recommended when the filter is
replaced.
Spark Plugs
Make sure to install new spark plugs
of the correct heat range.