2017 Hyundai Sonata Plug-in Hybrid Owner's Manual

Normal maintenance schedule
The following maintenance services must be performed to ensure good emission control and performance.
Keep receipts for all vehicle emission services to protect your warranty. Where both mileage and time are shown, the
frequency of service is determined by whichever occurs first.
7
Maintenance
7-9
7,500 miles (12,000 km) or 6 months
❑Inspect air cleaner filter
❑ Inspect HSG belt *2
(7,500 miles (12,000 km) or 12 months)
❑ Inspect vacuum hose
❑ Air intake hose
❑ Replace engine oil and filter
(7,500 miles (12,000 km) or 12 months)
❑ Add fuel additive *
1
(7,500 miles (12,000 km) or 12 months)
*1: If TOP TIER Detergent Gasoline is not available, one bottle
of additive is recommended. Additives are available from
your authorized HYUNDAI dealer along with information on
how to use them. Do not mix other additives.
*
2: Inspect HSG belt for evidence of cuts, crocks, excessive wear or oil saturation and replace if necessary. If drive belt
noise occurred, readjust drive belt tension before replace.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or
replace.
15,000 miles (24,000 km) or 12 months
❑Inspect air cleaner filter
❑ Inspect HSG belt *2
(15,000 miles (24,000 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
❑ Air intake hose
❑ Replace climate control air filter
(for evaporator and blower unit)
❑ Replace engine oil and filter
(15,000 miles (24,000 km) or 24 months)
(Continued)

Maintenance
7-10
22,500 miles (36,000 km) or 18 months
❑Inspect air cleaner filter
❑ Inspect vacuum hose
❑ Air intake hose
❑ Inspect HSG belt *
2
(22,500 miles (36,000 km) or 36 months)
❑ Replace engine oil and filter
(22,500 miles (36,000 km) or 36 months)
❑ Add fuel additive *
1
(22,500 miles (36,000 km) or 36 months)
Normal maintenance schedule (CONT.)
(Continued)
❑Add fuel additive *1
(15,000 miles (24,000 km) or 24 months)
*
1: If TOP TIER Detergent Gasoline is not available, one bottle of additive is recommended. Additives are available from
your authorized HYUNDAI dealer along with information on
how to use them. Do not mix other additives.
*
2: Inspect HSG belt for evidence of cuts, crocks, excessive wear or oil saturation and replace if necessary. If drive belt
noise occurred, readjust drive belt tension before replace.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or
replace. *
1: If TOP TIER Detergent Gasoline is not available, one bottle
of additive is recommended. Additives are available from
your authorized HYUNDAI dealer along with information on
how to use them. Do not mix other additives.
*
2: Inspect HSG belt for evidence of cuts, crocks, excessive wear or oil saturation and replace if necessary. If drive belt
noise occurred, readjust drive belt tension before replace.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or
replace.

7
Maintenance
7-11
Normal maintenance schedule (CONT.)
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 HSG belt *
2
(30,000 miles (48,000 km) or 48 months)
❑ 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 *
3
❑Inspect fuel cap, fuel lines, fuel hoses and connections
❑ Inspect fuel tank air filter (if equipped) *3
❑Inspect parking brake
❑ Inspect vapor hose and fuel filler cap
❑ Air intake hose
❑ Replace climate control air filter
(for evaporator and blower unit)
(Continued)
(Continued)
❑Replace air cleaner filter
❑ Replace engine oil and filter
(30,000 miles (48,000 km) or 48 months)
❑ Add fuel additive *
1
(30,000 miles (48,000 km) or 48 months)
*
1: If TOP TIER Detergent Gasoline is not available, one bottle of additive is recommended. Additives are available from
your authorized HYUNDAI dealer along with information on
how to use them. Do not mix other additives.
*
2: Inspect HSG belt for evidence of cuts, crocks, excessive wear or oil saturation and replace if necessary. If drive belt
noise occurred, readjust drive belt tension before replace.
*
3: Fuel filter & Fuel tank air filter are considered to be mainte- nance free but periodic inspection is recommended for this
maintenance schedule depends on fuel quality. If there are
some important safety matters like fuel flow restriction,
surging, loss of power, hard starting problem etc, replace
the fuel filter immediately regardless of maintenance sched-
ule and consult an authorized HYUNDAI dealer for details.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or
replace.

Maintenance
7-12
Normal maintenance schedule (CONT.)
37,500 miles (60,000 km) or 30 months
❑Inspect air cleaner filter
❑ Inspect HSG belt *2
(37,500 miles (60,000 km) or 60 months)
❑ Inspect vacuum hose
❑ Air intake hose
❑ Replace engine oil and filter
(37,500 miles (60,000 km) or 60 months)
❑ Add fuel additive *
1
(37,500 miles (60,000 km) or 60 months)
45,000 miles (72,000 km) or 36 months
❑ Inspect air cleaner filter
❑ 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 HSG belt *
2
(45,000 miles (72,000 km) or 72 months)
❑ Inspect rear brake disc/pads
❑ Inspect steering gear box, linkage & boots/lower arm ball
joint, upper arm ball joint
❑ Inspect suspension mounting bolts
❑ Air intake hoses
❑ Replace climate control air filter
(for evaporator and blower unit)
❑ Replace engine oil and filter
(45,000 miles (72,000 km) or 72 months)
❑ Add fuel additive *
1
(45,000 miles (72,000 km) or 72 months)
*1: If TOP TIER Detergent Gasoline is not available, one bottle
of additive is recommended. Additives are available from
your authorized HYUNDAI dealer along with information on
how to use them. Do not mix other additives.
*
2: Inspect HSG belt for evidence of cuts, crocks, excessive wear or oil saturation and replace if necessary. If drive belt
noise occurred, readjust drive belt tension before replace.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or
replace.

7
Maintenance
7-13
Normal maintenance schedule (CONT.)
52,500 miles (84,000 km) or 42 months
❑Inspect air cleaner filter
❑ Inspect HSG belt *2
(52,500 miles (84,000 km) or 84 months)
❑ Inspect vacuum hose
❑ Air intake hose
❑ Replace engine oil and filter
(52,500 miles (84,000 km) or 84 months)
❑ Add fuel additive *
1
(52,500 miles (84,000 km) or 84 months)
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 *
3
❑Inspect fuel cap, fuel lines, fuel hoses and connections
❑ Inspect fuel tank air filter (if equipped) *3
❑Inspect parking brake
❑ Inspect vapor hose and fuel filler cap
❑ Replace HSG belt *
2
(60,000 miles (96,000 km) or 48 months)
❑ Air intake hose
❑ Replace climate control air filter
(for evaporator and blower unit)
(Continued)
*1: If TOP TIER Detergent Gasoline is not available, one bottle
of additive is recommended. Additives are available from
your authorized HYUNDAI dealer along with information on
how to use them. Do not mix other additives.
*
2: Inspect HSG belt for evidence of cuts, crocks, excessive wear or oil saturation and replace if necessary. If drive belt
noise occurred, readjust drive belt tension before replace.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or
replace.

Maintenance
7-14
Normal maintenance schedule (CONT.)
(Continued)
❑Replace air cleaner filter
❑ Replace engine oil and filter
(60,000 miles (96,000 km) or 96 months)
❑ Add fuel additive *
1
(60,000 miles (96,000 km) or 96 months)
67,500 miles (108,000 km) or 54 months
❑ Inspect air cleaner filter
❑ Inspect HSG belt *2
(67,500 miles (108,000 km) or 108 months)
❑ Inspect vacuum hose
❑ Air intake hose
❑ Replace engine oil and filter
(67,500 miles (108,000 km) or 108 months)
❑ Add fuel additive *
1
(67,500 miles (108,000 km) or 108 months)
*1: If TOP TIER Detergent Gasoline is not available, one bottle
of additive is recommended. Additives are available from
your authorized HYUNDAI dealer along with information on
how to use them. Do not mix other additives.
*
2: Inspect HSG belt for evidence of cuts, crocks, excessive wear or oil saturation and replace if necessary. If drive belt
noise occurred, readjust drive belt tension before replace.
*
3: Fuel filter & Fuel tank air filter are considered to be mainte- nance free but periodic inspection is recommended for this
maintenance schedule depends on fuel quality. If there are
some important safety matters like fuel flow restriction,
surging, loss of power, hard starting problem etc, replace
the fuel filter immediately regardless of maintenance sched-
ule and consult an authorized HYUNDAI dealer for details.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or
replace. *
1: If TOP TIER Detergent Gasoline is not available, one bottle
of additive is recommended. Additives are available from
your authorized HYUNDAI dealer along with information on
how to use them. Do not mix other additives.
*
2: Inspect HSG belt for evidence of cuts, crocks, excessive wear or oil saturation and replace if necessary. If drive belt
noise occurred, readjust drive belt tension before replace.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or
replace.

7
Maintenance
7-15
Normal maintenance schedule (CONT.)
75,000 miles (120,000 km) or 60 months
❑Inspect air cleaner filter
❑ 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 HSG belt *
2
(75,000 miles (120,000 km) or 120 months)
❑ Air intake hose
❑ Replace climate control air filter
(for evaporator and blower unit)
❑ Replace engine oil and filter
(75,000 miles (120,000 km) or 120 months)
❑ Add fuel additive *
1
(75,000 miles (120,000 km) or 120 months)
82,500 miles (132,000 km) or 66 months
❑ Inspect air cleaner filter
❑ Inspect HSG belt *2
(82,500 miles (132,000 km) or 132 months)
❑ Inspect vacuum hose
❑ Air intake hose
❑ Replace engine oil and filter
(82,500 miles (132,000 km) or 132 months)
❑ Add fuel additive *
1
(82,500 miles (132,000 km) or 132 months)
*1: If TOP TIER Detergent Gasoline is not available, one bottle
of additive is recommended. Additives are available from
your authorized HYUNDAI dealer along with information on
how to use them. Do not mix other additives.
*
2: Inspect HSG belt for evidence of cuts, crocks, excessive wear or oil saturation and replace if necessary. If drive belt
noise occurred, readjust drive belt tension before replace.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or
replace.

Maintenance
7-16
Normal maintenance schedule (CONT.)
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 *
3
❑Inspect fuel cap, fuel lines, fuel hoses and connections
❑ Inspect fuel tank air filter (if equipped) *3
❑Inspect parking brake
❑ Inspect vapor hose and fuel filler cap
❑ Inspect HSG belt *
2
(90,000 miles (144,000 km) or 144 months)
❑ Air intake hose
❑ Replace climate control air filter
(for evaporator and blower unit)
❑ Replace air cleaner filter
(Continued)
(Continued)
❑Replace engine oil and filter
(90,000 miles (144,000 km) or 144 months)
❑ Add fuel additive *
1
(90,000 miles (144,000 km) or 144 months)
*
1: If TOP TIER Detergent Gasoline is not available, one bottle of additive is recommended. Additives are available from
your authorized HYUNDAI dealer along with information on
how to use them. Do not mix other additives.
*
2: Inspect HSG belt for evidence of cuts, crocks, excessive wear or oil saturation and replace if necessary. If drive belt
noise occurred, readjust drive belt tension before replace.
*
3: Fuel filter & Fuel tank air filter are considered to be mainte- nance free but periodic inspection is recommended for this
maintenance schedule depends on fuel quality. If there are
some important safety matters like fuel flow restriction,
surging, loss of power, hard starting problem etc, replace
the fuel filter immediately regardless of maintenance sched-
ule and consult an authorized HYUNDAI dealer for details.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or
replace.