2012 Hyundai Sonata coolant

713
Maintenance
NORMAL MAINTENANCE SCHEDULE (CONT.)
97,500 miles (156,000 km) or 78 months
❑Inspect air cleaner filter❑Inspect vacuum hose❑Replace engine oil and filter (2.4 GDI) *
3
(97,500 miles (156,000 km) or 156 months)❑ Add fuel additive *
4
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/clutch (if equipped) 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)❑ 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), 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 (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.(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

715
Maintenance
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/clutch (if equipped) 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 valve clearance *
2
❑Inspect drive belts
(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❑Replace engine oil and filter (2.4 GDI) *
3
(120,000 miles (192,000 km) or 192 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
*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 (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.
127,500 miles (204,000 km) or 102 months
❑ Inspect air cleaner filter❑Inspect vacuum hose❑Replace engine oil and filter (2.4 GDI) *
3
(127,500 miles (204,000 km) or 204 months)❑ Add fuel additive *
4

717
Maintenance
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/clutch (if equipped) 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 manual transaxle fluid (if equipped)❑Inspect drive belts
(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❑Replace engine oil and filter (2.4 GDI) *
3
(150,000 miles (240,000 km) or 240 months)
(Continued)
(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
NORMAL MAINTENANCE SCHEDULE (CONT.)
No check, No service required
❑Automatic transaxle 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 (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.

Maintenance20
7Air cleaner filterA Genuine HYUNDAI air cleaner filter is
recommended when the filter is
replaced.Spark plugsMake 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 systemCheck cooling system components, such
as radiator, coolant reservoir, hoses and
connections for leakage and damage.
Replace any damaged parts.
CoolantThe coolant should be changed at the
intervals specified in the maintenance
schedule.Manual transaxle fluid
(if equipped)Inspect the manual transaxle fluid
according to the maintenance schedule.Automatic transaxle fluid
(if equipped)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.✽ ✽
NOTICEAutomatic transaxle fluid color is basi-
cally red.
As the vehicle is driven, the automatic
transaxle fluid will begin to look darker.
It is normal condition and you should
not judge the need to replace the fluid
based upon the changed color.
Brake hoses and linesVisually check for proper installation,
chafing, cracks, deterioration and any
leakage. Replace any deteriorated or
damaged parts immediately.Brake/clutch fluidCheck 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 trans -
axle fluid. (Refer to “Recommended lubricants and capacities” in sec-tion 8.)

Maintenance24
7The high-pressure cooling system has a
reservoir filled with year-round antifreeze
coolant. The reservoir is filled at the factory.
Check the antifreeze protection and
coolant level at least once a year, at the
beginning of the winter season, and
before traveling to a colder climate.
Checking the coolant level
(Continued)
 Even if the engine is not operat-
ing, do not remove the radiator
cap or the drain plug while the
engine and radiator are hot. Hot
coolant and steam may still blow
out under pressure, causing seri-
ous injury.
ENGINE COOLANT
WARNING
Removing radiator
cap
 Never attempt to remove the radi-ator cap while the engine is oper-
ating or hot. Doing so might lead
to cooling system and engine
damage and could result in seri-
ous personal injury from escap-
ing hot coolant or steam.
 Turn the engine off and wait until it cools down. Use extreme care
when removing the radiator cap.
Wrap a thick towel around it, and
turn it counterclockwise slowly to
the first stop. Step back while the
pressure is released from the cool-
ing system. When you are sure all
the pressure has been released,
press down on the cap, using a
thick towel, and continue turning
counterclockwise to remove it.
(Continued)
WARNING
The electric motor
(cooling fan) is con-
trolled by engine
coolant temperature,
refrigerant pressure
and vehicle speed. It may some-
times operate even when the
engine is not running. Use extreme
caution when working near the
blades of the cooling fan so that
you are not injured by a rotating fan
blades. As the engine coolant tem-
perature decreases, the electric
motor will automatically shut off.
This is a normal condition. If your
vehicle is equipped with GDI, the
electric motor (cooling fan) may
operate until you disconnect the
negative battery cable.

725
Maintenance
Check the condition and connections of
all cooling system hoses and heater
hoses. Replace any swollen or deterio-
rated hoses.
The coolant level should be filled
between F and L marks on the side of the
coolant reservoir when the engine is
cool.
If the coolant level is low, add enough
specified coolant to provide protection
against freezing and corrosion. Bring the
level to F, but do not overfill. If frequent
additions are required, see an authorized
HYUNDAI dealer for a cooling system
inspection.
Recommended engine coolant When adding coolant, use only deion-ized water or soft water for your vehicle
and never mix hard water in the
coolant filled at the factory. An improp-
er coolant mixture can result in serious
malfunction or engine damage.
 The engine in your vehicle has aluminum engine parts and must be protected by
an ethylene-glycol-based coolant to pre-
vent corrosion and freezing.
 DO NOT USE alcohol or methanol coolant or mix them with the specified
coolant.
 Do not use a solution that contains more than 60% antifreeze or less than
35% antifreeze, which would reduce
the effectiveness of the solution.
For mixture percentage, refer to the fol-
lowing table.
WARNING
Radiator cap
Do not remove the radiator cap
when the engine and radiator are
hot. Scalding hot coolant and
steam may blow out under pres-
sure causing serious injury.
5°F (-15°C) 35 65
-13°F (-25°C) 40 60
-31°F (-35°C) 50 50
-49°F (-45°C) 60 40Ambient
Temperature Mixture Percentage (volume)
Antifreeze Water
OYF079006-1
OYF079005N

Maintenance26
7
Changing the coolantHave coolant changed by an authorized
HYUNDAI dealer according to the
Maintenance Schedule at the beginning
of this section.
Checking the brake/clutch 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.
Before removing the reservoir cap and
adding brake/clutch fluid, clean the area
around the reservoir cap thoroughly to
prevent brake/clutch 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 or clutch (if equipped)
checked by an authorized HYUNDAI
dealer.
OYF079007N
BRAKE/CLUTCH FLUID
WARNING -
Coolant
 Do not use radiator coolant or
antifreeze in the washer fluid
reservoir.
 Radiator coolant can severely obscure visibility when sprayed
on the windshield and may cause
loss of vehicle control or damage
to paint and body trim.
CAUTION
Put a thick cloth or fabric aroundthe radiator cap before refilling thecoolant in order to prevent the coolant from overflowing intoengine parts such as generator.
WARNING
The cooling fan is controlled by
engine coolant temperature and
may sometimes operate even when
the engine is not running. Use
extreme caution when working near
the blades of the coolant fan so that
you are not injured by a rotating fan
blade. As the engine coolant tem-
perature decreases, the fan will
automatically shut off. This is a nor-
mal condition.

Maintenance28
7
Checking the parking brakeType ACheck whether the stroke is within spec-
ification when the parking brake pedal is
depressed with 44 lb (20 kg, 196 N) of
force. Also, the parking brake alone should
securely hold the vehicle on a fairly steep
grade. If the stroke is more or less than
specified, have the parking brake adjusted
by an authorized HYUNDAI dealer.
Stroke : 4~5 notch
Type BCheck the stroke of the parking brake by
counting the number of “clicks’’ heard
while fully applying it from the released
position. Also, the parking brake alone
should securely hold the vehicle on a fair-
ly steep grade. If the stroke is more or
less than specified, have the parking
brake adjusted by an authorized
HYUNDAI dealer.
Stroke : 5 “clicks’’ at a force of
44 lbs (20 kg, 196 N).
OYF059023
OYF059022N
WARNING -
Coolant
 Do not use radiator coolant orantifreeze in the washer fluid
reservoir.
 Radiator coolant can severely obscure visibility when sprayed
on the windshield and may cause
loss of vehicle control or damage
to paint and body trim.
 Windshield washer fluid agents contain some amounts of alcohol
and can be flammable under cer-
tain circumstances. Do not allow
sparks or flame to contact the
washer fluid or the washer fluid
reservoir. Damage to the vehicle
or occupants could occur.
 Windshield washer fluid is poi- sonous to humans and animals.
Do not drink and avoid contacting
windshield washer fluid. Serious
injury or death could occur.
PARKING BRAKE