spark plugs replace Hyundai Sonata

Driving your vehicle44
5
Use high quality ethylene glycol
coolantYour vehicle is delivered with high quality
ethylene glycol coolant in the cooling
system. It is the only type of coolant that
should be used because it helps prevent
corrosion in the cooling system, lubri-
cates the water pump and prevents
freezing. Be sure to replace or replenish
your coolant in accordance with the
maintenance schedule in section 7.
Before winter, have your coolant tested to
assure that its freezing point is sufficient
for the temperatures anticipated during
the winter.Check battery and cablesWinter puts additional burdens on the
battery system. Visually inspect the bat-
tery and cables as described in section
7. The level of charge in your battery can
be checked by an authorized HYUNDAI
dealer or a service station.
Change to "winter weight" oil if
necessaryIn some climates it is recommended that
a lower viscosity "winter weight" oil be
used during cold weather. See section 8
for recommendations. If you aren't sure
what weight oil you should use, consult
an authorized HYUNDAI dealer.Check spark plugs and ignition
systemInspect your spark plugs as described in
section 7 and replace them if necessary.
Also check all ignition wiring and compo-
nents to be sure they are not cracked,
worn or damaged in any way.
WARNING
- Tire chains
 The use of chains may adversely
affect vehicle handling.
 Do not exceed 20 mph (30 km/h) or the chain manufacturer’s rec-
ommended speed limit, whichev-
er is lower.
 Drive carefully and avoid bumps, holes, sharp turns, and other
road hazards, which may cause
the vehicle to bounce.
 Avoid sharp turns or locked- wheel braking.
CAUTION
 Chains that are the wrong size or improperly installed can damageyour vehicle's brake lines, sus-pension, body and wheels.
 Stop driving and retighten the chains any time you hear themhitting the vehicle.

Maintenance10
7
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 rear brake disc/pads❑Inspect steering gear box, linkage & boots/lower arm ball joint,
upper arm ball joint❑ Inspect suspension mounting bolts❑Replace climate control air filter (for evaporator and blower unit)❑Replace engine oil and filter (2.4 GDI) *
3
(45,000 miles (72,000 km) or 72 months)❑Replace spark plugs (iridium coated), 2.0TGDI❑ Add fuel additive *
4
NORMAL MAINTENANCE SCHEDULE (CONT.)
52,500 miles (84,000 km) or 42 months
❑Inspect air cleaner filter❑Inspect vacuum hose❑Replace engine oil and filter (2.4 GDI) *
3
(52,500 miles (84,000 km) or 84 months)❑ Add fuel additive *
4
*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.

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

Maintenance14
7NORMAL MAINTENANCE SCHEDULE (CONT.)
105,000 miles (168,000 km) or 84 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 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 spark plugs (iridium coated), 2.4GDI❑Replace engine oil and filter (2.4 GDI) *
3
(105,000 miles (168,000 km) or 168 months)❑ Add fuel additive *
4
112,500 miles (180,000 km) or 90 months
❑Inspect air cleaner filter❑Inspect vacuum hose❑Inspect manual transaxle fluid (if equipped)❑Replace engine oil and filter (2.4 GDI) *
3
(112,500 miles (180,000 km) or 180 months)❑ Add fuel additive *
4
*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.

Maintenance16
7NORMAL 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 rear brake disc/pads❑Inspect steering gear box, linkage & boots/lower arm ball joint,
upper arm ball joint❑ Inspect suspension mounting bolts❑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 engine oil and filter (2.4 GDI) *
3
(135,000 miles (216,000 km) or 216 months)❑Replace spark plugs (iridium coated), 2.0TGDI❑ Add fuel additive *
4
142,500 miles (228,000 km) or 114 months
❑Inspect air cleaner filter❑Inspect vacuum hose❑Replace engine oil and filter (2.4 GDI) *
3
(142,500 miles (228,000 km) or 228 months)❑ Add fuel additive *
4
*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.

Maintenance18
7MAINTENANCE UNDER SEVERE USAGE CONDITIONSSEVERE DRIVING CONDITIONS
A - Repeatedly driving short distance of less than 5 miles (8 km) in normal
temperature 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 conditionsThe 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 ITEM
MAINTENANCE
OPERATION
MAINTENANCE INTERVALS
DRIVING CONDITION
ENGINE OIL AND FILTER (2.4 GDI)
R
EVERY 3,750 MILES (6,000 KM) OR 6 MONTHS
A, B, C, D, E, F, G, H, I, K
ENGINE OIL AND FILTER (2.0 TGDI)
R
EVERY 3,000 MILES (5,000 KM) OR 3 MONTHS
A, B, C, D, E, F, G, H, I, K
AIR CLEANER FILTER
R
MORE FREQUENTLY
C, E
SPARK PLUGS
R
MORE FREQUENTLY
B, H
AUTOMATIC TRANSAXLE FLUID
R
EVERY 60,000 MILES (96,000 KM)
A, C, E, F, G, I
MANUAL TRANSAXLE FLUID
R
EVERY 75,000 MILES (120,000 KM)
A, C, E, F, G, I
FRONT BRAKE DISC/PADS, CALIPERS
I
MORE FREQUENTLY
C, D, G, H
REAR BRAKE DISC/PADS
I
MORE FREQUENTLY
C, D, G, F
PARKING BRAKE
I
MORE FREQUENTLY
C, D, G, H
STEERING GEAR BOX, LINKAGE & BOOTS/
LOWER ARM BALL JOINT, UPPER ARM BALL JOINT
I
MORE FREQUENTLY
C, D, E, F, G, H, I
DRIVE SHAFTS AND BOOTS
I
EVERY 7,500 MILES (12,000 KM) OR 6 MONTHS
C, D, E, F, G, H, I, J
CLIMATE CONTROL AIR FILTER
(FOR EVAPORATOR AND BLOWER UNIT)
R
MORE FREQUENTLY
C, E

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.)