2015 Hyundai Sonata Hybrid Owner's Manual

Maintenance
12
7
NORMAL MAINTENANCE SCHEDULE (CONT.)
75,000 miles (120,000 km) or 60 months
❑ Inspect air cleaner filter
❑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
(75,000 miles (120,000 km) or 120 months)
❑ Inspect rear brake disc/pads
❑Inspect steering gear box, linkage & boots/lower arm ball joint,
upper arm ball joint
❑ Inspect suspension mounting bolts
❑Inspect vacuum hose
❑Inspect W/pump belt (auto-tensioner, HSG, w/pump)
(First, 60,000 miles (96,000 km or 72 months
after every 15,000 miles (24,000 km) or 24 months)
❑ 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 *3
(75,000 miles (120,000 km) or 120 months)
❑ Rotate tires
82,500 miles (132,000 km) or 66 months
❑Inspect air cleaner filter
❑Inspect HSG belt
(82,500 miles (132,000 km) or 132 months)
❑ Inspect vacuum hose
❑Replace engine oil and filter
(82,500 miles (132,000 km) or 132 months)
❑Add fuel additive *3
(82,500 miles (132,000 km) or 132 months)
❑ Rotate tires
❈ Inspect : Inspect and if necessary, adjust, correct, clean or replace.
*3: If 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.

713
Maintenance
NORMAL MAINTENANCE SCHEDULE (CONT.)
97,500 miles (156,000 km) or 78 months
❑Inspect air cleaner filter
❑Inspect HSG belt
(97,500 miles (156,000 km) or 156 months)
❑ Inspect vacuum hose
❑Replace engine oil and filter
(97,500 miles (156,000 km) or 156 months)
❑Add fuel additive *3
(97,500 miles (156,000 km) or 156 months)
❑ Rotate tires
90,000 miles (144,000 km) or 72 months
❑Inspect air conditioning refrigerant
❑Inspect brake fluid
❑Inspect brake hoses and lines
❑Inspect drive shafts and boots
❑Inspect exhaust pipe and muffler
❑Inspect front brake disc/pads, calipers
❑Inspect fuel filter *1
❑Inspect fuel lines, fuel hoses and connections
❑Inspect fuel tank air filter (if equipped) *1
❑Inspect HSG belt
(90,000 miles (144,000 km) or 144 months)
❑ Inspect parking brake
❑Inspect rear brake disc/pads
❑Inspect steering gear box, linkage & boots/lower arm ball joint,
upper arm ball joint
❑ Inspect suspension mounting bolts
❑Inspect vacuum hose
❑Inspect vapor hose and fuel filler cap
❑Inspect W/pump belt (auto-tensioner, HSG, w/pump)
(First, 60,000 miles (96,000 km or 72 months
after every 15,000 miles (24,000 km) or 24 months)
❑ Replace climate control air filter (for evaporator and blower unit)
❑Replace air cleaner filter
(Continued)
❈ Inspect : Inspect and if necessary, adjust, correct, clean or replace.
*1: Fuel filter & Fuel tank air filter are considered to be maintenance 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 schedule and consult an aut\
hor-
ized HYUNDAI dealer for details.
*
3: If 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.
(Continued)
❑ Replace engine oil and filter
(90,000 miles (144,000 km) or 144 months)
❑Add fuel additive *3
(90,000 miles (144,000 km) or 144 months)
❑ Rotate tires

Maintenance
14
7
NORMAL MAINTENANCE SCHEDULE (CONT.)
105,000 miles (168,000 km) or 84 months
❑ Inspect air cleaner filter
❑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
(105,000 miles (168,000 km) or 168 months)
❑ Inspect rear brake disc/pads
❑Inspect steering gear box, linkage & boots/lower arm ball joint,
upper arm ball joint
❑ Inspect suspension mounting bolts
❑Inspect vacuum hose
❑Inspect W/pump belt (auto-tensioner, HSG, w/pump)
(First, 60,000 miles (96,000 km or 72 months
after every 15,000 miles (24,000 km) or 24 months)
❑ Replace climate control air filter (for evaporator and blower unit)
❑Replace engine oil and filter
(105,000 miles (168,000 km) or 168 months)
❑Add fuel additive *3
(105,000 miles (168,000 km) or 168 months)
❑ Replace spark plugs (iridium coated)
❑Rotate tires
112,500 miles (180,000 km) or 90 months
❑Inspect air cleaner filter
❑Inspect HSG belt
(112,500 miles (180,000 km) or 180 months)
❑ Inspect vacuum hose
❑Replace engine oil and filter
(112,500 miles (180,000 km) or 180 months)
❑Add fuel additive *3
(112,500 miles (180,000 km) or 180 months)
❑ Rotate tires
❈ Inspect : Inspect and if necessary, adjust, correct, clean or replace.
*3: If 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.

715
Maintenance
NORMAL MAINTENANCE SCHEDULE (CONT.)
120,000 miles (192,000 km) or 96 months
❑Inspect air conditioning refrigerant
❑Inspect brake fluid
❑Inspect brake hoses and lines
❑Inspect drive shafts and boots
❑Inspect exhaust pipe and muffler
❑Inspect front brake disc/pads, calipers
❑Inspect fuel filter *1
❑Inspect fuel lines, fuel hoses and connections
❑Inspect fuel tank air filter (if equipped) *1
❑Inspect parking brake
❑Inspect rear brake disc/pads
❑Inspect steering gear box, linkage & boots/lower arm ball joint,
upper arm ball joint
❑ Inspect suspension mounting bolts
❑Inspect vacuum hose
❑Inspect vapor hose and fuel filler cap
❑Inspect valve clearance *2
(60,000 miles (96,000 km) or 72 months
❑Inspect W/pump belt (auto-tensioner, HSG, w/pump)
(First, 60,000 miles (96,000 km or 72 months
after every 15,000 miles (24,000 km) or 24 months)
❑ Replace air cleaner filter
❑Replace climate control air filter (for evaporator and blower unit)
❑Replace engine coolant (First, 120,000 miles (192,000 km) or 120
months after every 30,000 miles (48,000 km) or 24 months)
❑Replace inverter coolant (First, 120,000 miles (192,000 km) or
120 months after every 30,000 miles (48,000 km) or 24 months)
(Continued)
(Continued)
❑Replace engine oil and filter
(120,000 miles (192,000 km) or 192 months)
❑Add fuel additive *3
(120,000 miles (192,000 km) or 96 months)
❑ Replace HSG belt
(120,000 miles (192,000 km) or 96 months)
❑ Rotate tires
❈ Inspect : Inspect and if necessary, adjust, correct, clean or replace.
*1: Fuel filter & Fuel tank air filter are considered to be maintenance 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 schedule and consult an
authorized HYUNDAI dealer for details.
*
2: Inspect for excessive tappet noise and/or engine vibration and adjust if necessary.
*3: If 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.
127,500 miles (204,000 km) or 102 months
❑ Inspect air cleaner filter
❑Inspect HSG belt
(127,500 miles (204,000 km) or 204 months)
❑ Inspect vacuum hose
❑Replace engine oil and filter
(127,500 miles (204,000 km) or 204 months)
❑Add fuel additive *3
(127,500 miles (204,000 km) or 204 months)
❑ Rotate tires

Maintenance
16
7
NORMAL MAINTENANCE SCHEDULE (CONT.)
135,000 miles (216,000 km) or 108 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
(135,000 miles (216,000 km) or 216 months)
❑ Inspect rear brake disc/pads
❑Inspect steering gear box, linkage & boots/lower arm ball joint,
upper arm ball joint
❑ Inspect suspension mounting bolts
❑Inspect W/pump belt (auto-tensioner, HSG, w/pump)
(First, 60,000 miles (96,000 km or 72 months
after every 15,000 miles (24,000 km) or 24 months)
❑ Replace climate control air filter (for evaporator and blower unit)
❑Replace engine oil and filter
(135,000 miles (216,000 km) or 216 months)
❑Add fuel additive *3
(135,000 miles (216,000 km) or 216 months)
❑ Rotate tires
142,500 miles (228,000 km) or 114 months
❑Inspect air cleaner filter
❑Inspect HSG belt
(142,500 miles (228,000 km) or 228 months)
❑ Inspect vacuum hose
❑Replace engine oil and filter
(142,500 miles (228,000 km) or 228 months)
❑Add fuel additive *3
(142,500 miles (228,000 km) or 228 months)
❑ Rotate tires
❈ Inspect : Inspect and if necessary, adjust, correct, clean or replace.
*3: If 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.

717
Maintenance
150,000 miles (240,000 km) or 120 months
❑Inspect air conditioning refrigerant
❑Inspect brake fluid
❑Inspect brake hoses and lines
❑Inspect drive shafts and boots
❑Inspect exhaust pipe and muffler
❑Inspect front brake disc/pads, calipers
❑Inspect fuel filter *1
❑Inspect fuel lines, fuel hoses and connections
❑Inspect fuel tank air filter (if equipped) *1
❑Inspect HSG belt
(150,000 miles (240,000 km) or 240 months)
❑ Inspect parking brake
❑Inspect rear brake disc/pads
❑Inspect steering gear box, linkage & boots/lower arm ball joint,
upper arm ball joint
❑ Inspect suspension mounting bolts
❑Inspect vacuum hose
❑Inspect vapor hose and fuel filler cap
❑Inspect W/pump belt (auto-tensioner, HSG, w/pump)
(First, 60,000 miles (96,000 km or 72 months
after every 15,000 miles (24,000 km) or 24 months)
❑ Replace climate control air filter (for evaporator and blower unit)
❑Replace air cleaner filter
(Continued)
(Continued)
❑Replace engine oil and filter
(150,000 miles (240,000 km) or 240 months)
❑Add fuel additive *3
(150,000 miles (240,000 km) or 120 months)
❑ Replace engine coolant (First, 120,000 miles (192,000 km) or 120
months after every 30,000 miles (48,000 km) or 24 months)
❑Replace inverter engine coolant (First, 120,000 miles (192,000 km)
or 120 months after every 30,000 miles (48,000 km) or 24 months)
❑ Rotate tires
NORMAL MAINTENANCE SCHEDULE (CONT.)
No check, No service required
❑Automatic transaxle fluid
❈ Inspect : Inspect and if necessary, adjust, correct, clean or replace.
*1: Fuel filter & Fuel tank air filter are considered to be maintenance 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 schedule and consult an
authorized HYUNDAI dealer for details.
*
3: If 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.

Maintenance
18
7
MAINTENANCE UNDER SEVERE USAGE CONDITIONS
SEVERE DRIVING CONDITIONS
A - Repeatedly driving short distance of less than 5 miles (8 km) in normal tem-
perature or less than 10 miles (16 km) in freezing temperature
B - Extensive engine idling or low speed driving for long distances
C - Driving on rough, dusty, muddy, unpaved, graveled or salt- spread roads
D - Driving in areas using salt or other corrosive materials or in very cold weather
E - Driving in sandy areas
F - Driving in heavy traffic area over 90°F (32°C) G - Driving on uphill, downhill, or mountain road
H - Towing a Trailer, or using a camper, or roof rack
I - Driving as a patrol car, taxi, other commercial use or vehicle towing
J - Driving over 106 mph (170 km/h)
K - Frequently driving in stop-and-go conditions
L - Frequently driving in rainy areas
The following items must be serviced more frequently on cars normally used under severe driving conditions. Refer to the chart
below for the appropriate maintenance intervals.
R : Replace I : Inspect and, after inspection, clean, adjust, repair or replace if neces\
sary
MAINTENANCE ITEMMAINTENANCE
OPERATIONMAINTENANCE INTERVALSDRIVING CONDITION
ENGINE OIL AND FILTERREVERY 3,750 MILES (6,000 KM) OR 6 MONTHSA, B, C, D, E, F, G, H, I, K
AIR CLEANER FILTERRMORE FREQUENTLYC, E
SPARK PLUGSRMORE FREQUENTLYB, H
AUTOMATIC TRANSAXLE FLUIDREVERY 60,000 MILES (96,000 KM) A, C, E, F, G, I
HSG BELT REVERY 30,000 MILES (48,000 KM) or 24 MONTHS C, D, E, K, L
IEVERY 3,750 MILES (6,000 KM) or 6 MONTHS C, D, E, K, L
FRONT BRAKE DISC/PADS, CALIPERSIMORE FREQUENTLYC, D, G, H
REAR BRAKE DISC/PADSIMORE FREQUENTLYC, D, G, F
PARKING BRAKEIMORE FREQUENTLYC, D, G, H
STEERING GEAR BOX, LINKAGE & BOOTS/
LOWER ARM BALL JOINT, UPPER ARM BALL JOINTIEVERY 7,500 MILES (12,000 KM) OR 6 MONTHSC, D, E, F, G, H, I
DRIVE SHAFTS AND BOOTSIMORE FREQUENTLYC, D, E, F, G, H, I, J
CLIMATE CONTROL AIR FILTER
(FOR EVAPORATOR AND BLOWER UNIT)RMORE FREQUENTLYC, E

719
Maintenance
EXPLANATION OF SCHEDULED MAINTENANCE ITEMS
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 fre-
quent oil and filter changes are required.
Drive belts
Inspect all drive belts for evidence of
cuts, cracks, excessive wear or oil satu-
ration and replace if necessary. Drive
belts should be checked periodically for
proper tension and adjusted as neces-
sary.
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 exces-
sive amount of foreign matter accumu-
lates 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 con-
nections
Check the fuel lines, fuel hoses and con-
nections for leakage and damage. Have
an authorized HYUNDAI dealer replace
any damaged or leaking parts immedi-
ately.
Vapor hose and fuel filler cap
The vapor hose and fuel filler cap should
be inspected at those intervals specified
in the maintenance schedule. Make sure
that a new vapor hose or fuel filler cap is
correctly replaced.
Vacuum hoses and crankcase
ventilation hoses
Inspect the surface of hoses for evidence
of heat and/or mechanical damage. Hard
and brittle rubber, cracking, tears, cuts,
abrasions, and excessive swelling indi-
cate deterioration. Particular attention
should be paid to examine those hose
surfaces nearest to high heat sources,
such as the exhaust manifold.
Inspect the hose routing to assure that
the hoses do not come in contact with
any heat source, sharp edges or moving
component which might cause heat dam-
age or mechanical wear. Inspect all hose
connections, such as clamps and cou-
plings, to make sure they are secure, and
that no leaks are present. Hoses should
be replaced immediately if there is any
evidence of deterioration or damage.