2013 Hyundai Sonata Hybrid air condition

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
❑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 necessary
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

Maintenance
20 7
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.
Valve clearance
Inspect excessive valve noise and/or
engine vibration and adjust if necessary.
An authorized HYUNDAI dealer should
perform the operation.
Cooling system
Check cooling system components, such
as radiator, coolant reservoir, hoses and
connections for leakage and damage.
Replace any damaged parts.
Coolant
The engine and inverter coolants should
be changed at the intervals specified in
the maintenance schedule.
Automatic transaxle fluid
Automatic transaxle fluid should not be
checked under normal usage conditions.
But in severe conditions, the fluid should
be changed at an authorized HYUNDAI
dealer in accordance to the scheduled
maintenance at the beginning of this
chapter.
✽ ✽
NOTICE
Automatic transaxle fluid color is basi-
cally red.
As the vehicle is driven, the automatic
transaxle 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.
Brake hoses and lines
Visually check for proper installation,
chafing, cracks, deterioration and any
leakage. Replace any deteriorated or
damaged parts immediately.
Brake fluid
Check brake fluid level in the brake fluid
reservoir. The level should be between
“MIN” and “MAX” marks on the side of
the reservoir. Use only hydraulic brake
fluid conforming to DOT 3 or DOT 4
specification.
CAUTION
The use of a non-specified fluid
could result in transaxle malfunc-
tion and failure.
Use only specified automatic
transaxle fluid. (Refer to
“Recommended lubricants and
capacities” in section 8.)

721
Maintenance
Parking brake
Inspect the parking brake system includ-
ing the parking brake pedal and cables.
Brake discs, pads, calipers and
rotors
Check the pads for excessive wear, discs
for run out and wear, and calipers for fluid
leakage.
Exhaust pipe and muffler
Visually inspect the exhaust pipes, muf-
fler and hangers for cracks, deterioration,
or damage. Start the engine and listen
carefully for any exhaust gas leakage.
Tighten connections or replace parts as
necessary.
Suspension mounting bolts
Check the suspension connections for
looseness or damage. Retighten to the
specified torque.
Steering gear box, linkage &
boots/lower arm ball joint
With the vehicle stopped and engine off,
check for excessive free-play in the
steering wheel.
Check the linkage for bends or damage.
Check the dust boots and ball joints for
deterioration, cracks, or damage.
Replace any damaged parts.
Drive shafts and boots
Check the drive shafts, boots and clamps
for cracks, deterioration, or damage.
Replace any damaged parts and, if nec-
essary, repack the grease.
Air conditioning refrigerant
Check the air conditioning lines and con-
nections for leakage and damage.

727
Maintenance
BRAKE FLUID
Checking the brake 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. To check the brake
fluid exactly, after stopping the vehicle,
apply the brake pedal a few times and
then check the fluid level.
Before removing the reservoir cap and
adding brake fluid, clean the area around
the reservoir cap thoroughly to prevent
brake 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 checked by an author-
ized HYUNDAI dealer.
Use only the specified brake fluid. (Refer
to “Recommended lubricants or capaci-
ties” in section 8.)
Never mix different types of fluid.
WARNING - Brake fluid
When changing and adding brake
fluid, handle it carefully. Do not let it
come in contact with your eyes. If
brake fluid should come in contact
with your eyes, immediately flush
them with a large quantity of fresh
tap water. Have your eyes examined
by a doctor as soon as possible.
WARNING - Loss of brake
fluid
In the event the brake system
requires frequent additions of fluid,
the vehicle should be inspected by
an authorized HYUNDAI dealer.CAUTION
Do not allow brake fluid to contact
the vehicle's body paint, as paint
damage will result. Brake fluid,
which has been exposed to open air
for an extended time should never
be used as its quality cannot be
guaranteed. It should be disposed
of properly. Don't put in the wrong
kind of fluid. A few drops of miner-
al-based oil, such as engine oil, in
your brake system can damage
brake system parts.
CAUTION
Do not overfill the brake fluid. Brake
system damage may occur if the
brake fluid level exceeds the Max
fill level.
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