climate control Hyundai Sonata

Features of your vehicle
98
4
To defrost outside windscreen
1. Set the fan speed to the highest posi-
tion.
2. Set the temperature to the extreme hot position.
3. Select the position.
4. The outside (fresh) air and air condi- tioning will be selected automatically. Automatic climate control systemTo defog inside windscreen
1. Set the fan speed to the desired posi-
tion.
2. Select desired temperature.
3. Press the defrost button ( ).
4. The air conditioning will be turned on according to the detected ambient tem-
perature and outside (fresh) air posi-
tion will be selected automatically.
If the air conditioning and outside (fresh)air position are not selected automatical-
ly, adjust the corresponding button man-
ually. If the position is selected,
lower fan speed is adjusted to a higher
fan speed.
To defrost outside windscreen
1. Set the fan speed to the highest (extreme right) position.
2. Set the temperature to the extreme hot (HI) position.
3. Press the defrost button ( ).
4. The air conditioning will be turned on according to the detected ambient
temperature and outside (fresh) air
position will be selected automatically.
If the position is selected, lower fan
speed is adjusted to a higher fan speed.
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499
Features of your vehicle
Defogging logic
To reduce the probability of fogging up the inside of the windscreen, the air
intake or air conditioning are controlled
automatically according to certain condi-
tions such as or position. To
cancel or return the defogging logic, do
the following.Manual climate control system
1. Turn the ignition switch to the ON posi-tion.
2. Press the defrost button ( ).
3. Whilst holding the air conditioning but- ton (A/C) pressed, press the air intake
control button at least 5 times within 3
seconds.
The indicator on the air intake button
blinks 3 times with 0.5 second of interval.
It indicates that the defogging logic is
canceled or returned to the programmed
status.
If the battery has been discharged or dis-
connected, it resets to the defog logic
status. Automatic climate control system
1. Turn the ignition switch to the ON posi-
tion.
2. Press the defrost button ( ).
3. Whilst holding the air conditioning but- ton (A/C) pressed, press the air intake
control button at least 5 times within 3
seconds.
The indicator on the air intake button
blinks 3 times with 0.5 second of interval.
It indicates that the defogging logic is
canceled or returned to the programmed
status.
If the battery has been discharged or dis-
connected, it resets to the defog logic
status.
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7
Engine compartment / 7-2
Maintenance services / 7-3
Owner maintenance / 7-4
Scheduled maintenance service / 7-6
Explanation of scheduled maintenance items / 7-13
Engine oil / 7-16
Engine coolant / 7-18
Brake/clutch fluid / 7-21
Power steering fluid / 7-22
Washer fluid / 7-23
Parking brake / 7-24
Air cleaner / 7-25
Climate control air filter / 7-27
Wiper blades / 7-29
Battery / 7-31
Tyres and wheels / 7-34
Fuses / 7-44
Light bulbs / 7-55
Appearance care / 7-62
Emission control system / 7-68
Maintenance

Maintenance
6
7
SCHEDULED MAINTENANCE SERVICE
At least once a year:
Clean body and door drain holes.
Lubricate door hinges and checks, and
bonnet hinges.
Lubricate door and bonnet locks and latches.
Lubricate door rubber weatherstrips.
Check the air conditioning system.
Check the power steering fluid level.
Inspect and lubricate automatic transaxle linkage and controls.
Clean battery and terminals.
Check the brake (and clutch) fluid level. Follow Normal Maintenance Schedule if
the vehicle is usually operated where
none of the following conditions apply. If
any of the following conditions apply, fol-
low Maintenance Under Severe Usage
Conditions.
Repeated short distance driving.
Driving in dusty conditions or sandy
areas.
Extensive use of brakes.
Driving in areas where salt or other corrosive materials are being used.
Driving on rough or muddy roads.
Driving in mountainous areas.
Extended periods of idling or low speed operation.
Driving for a prolonged period in cold temperatures and/or extremely humid
climates.
More than 50% driving in heavy city traffic during hot weather above 32°C(90°F).
If your vehicle is operated under the
above conditions, you should inspect, replace or refill more frequently than thefollowing Normal Maintenance Schedule.
After 96 months or 120,000 km (80,000miles) continue to follow the prescribedmaintenance intervals.

Maintenance
10
7
NORMAL MAINTENANCE SCHEDULE (CONT.)
I : Inspect and if necessary, adjust, correct, clean or replace.
R : Replace or change.* 8
: Manual transaxle fluid should be changed anytime they have been submerged in water.
Number of months or driving distance, whichever comes first
Months1224364860728496
Km×1,000153045607590105120
Steering gear rack, linkage and bootsIIIIIIII
Driveshaft and bootsIIII
Tyre (pressure & tread wear) IIIIIIII
Front suspension ball jointsIIIIIIII
Bolt and nuts on chassis and bodyIIIIIIII
Air conditioner refrigerant (if equipped)IIIIIIII
Air conditioner compressor (if equipped)IIIIIIII
Climate control air filter (if equipped)RRRRRRRR
Manual transaxle fluid (if equipped) * 8II
Automatic transaxle fluid(if equipped) No check, No service required
Exhaust systemIIII
MAINTENANCE
INTERVALS
MAINTENANCE ITEM

Maintenance
12
7
Severe driving conditions
A : Repeated short distance driving
B : Extensive idling
C : Driving in dusty, rough roads
D : Driving in areas using salt or other corrosive
materials or in very cold weather
E : Driving in sandy areas F : More than 50 % driving in heavy city traffic during hot
weather above 32°C (90°F)
G : Driving in mountainous areas
H : Towing a trailer
I : Driving for patrol car, taxi, commercial car or vehicle tow- ing
J : Driving over 140 km/h
K : Driving over 170 km/h
Maintenance itemMaintenance operationMaintenance intervalsDriving condition
Driveshaft and bootsIInspect more frequently
depending on the conditionC, D, E, F
Manual transaxle fluid (if equipped)REvery 120,000 kmC, D, E, G, H, I, K
Automatic transaxle fluid (if equipped)REvery 100,000 km A, C, D, E, F, G, H, I, K
Climate control air filter (if equipped)RReplace more frequently
depending on the conditionC, E

727
Maintenance
CLIMATE CONTROL AIR FILTER (IF EQUIPPED)
Filter inspection
If the vehicle is operated in the severely air-polluted cities or on dusty rough
roads for a long period, it should beinspected more frequently and replaced
earlier. When you, the owner, replace the
climate control air filter, replace it per-
forming the following procedure, and be
careful to avoid damaging other compo-
nents. Replace the filter according to the main-
tenance schedule.
Filter replacement
1. Open the glove box and remove thesupport strap (1). 2. With the glove box open, remove the
stoppers by turning them counter-
clockwise on both sides.
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Maintenance
28
7
3. Remove the climate control air filter
cover whilst pressing the lock on the
right of the cover. 4. Replace the climate control air filter.
5. Reassemble in the reverse order of
disassembly.
✽✽ NOTICE
When replacing the climate control air
filter install it properly. Otherwise, the
system may produce noise and the effec-
tiveness of the filter may be reduced.
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733
Maintenance
Reset items
Items should be reset after the battery
has been discharged or the battery hasbeen disconnected.
Auto up/down window (See section 4)
Sunroof (See section 4)
Driver position memory system (See section 4)
Trip computer (See section 4)
Climate control system (See section 4)
Clock (See section 4)
Audio (See section 4)
WARNING
Before performing maintenance or recharging the battery, turn off all accessories and stop the
engine.
The negative battery cable must be removed first and installed
last when the battery is discon-nected.
Operation related to the battery should be done in an authorised
HYUNDAI dealer.
CAUTION
Keep the battery away from water
or any liquid.
For your safety, use the authentic- ity by approved authorisedHYUNDAI dealer, when youreplace the battery.
WARNING - Recharging
battery
When recharging the battery,
observe the following precautions:
The battery must be removed from the vehicle and placed in an area with good ventilation.
Do not allow cigarettes, sparks, or flame near the battery.
Watch the battery during charg- ing, and stop or reduce the charg-
ing rate if the battery cells begin
gassing (boiling) violently or if
the temperature of the electrolyte
of any cell exceeds 49°C (120°F).
Wear eye protection when check- ing the battery during charging.
Disconnect the battery charger in the following order.
1. Turn off the battery charger main switch.
2. Unhook the negative clamp from the negative battery terminal.
3. Unhook the positive clamp from the positive battery terminal.

Maintenance
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7
4. Tyre ply composition and material
The number of layers or plies of rub-
ber-coated fabric in the tyre. Tyre
manufacturers also must indicate the
materials in the tyre, which include
steel, nylon, polyester, and others.
The letter "R" means radial ply con-
struction; the letter "D" means diago-
nal or bias ply construction; and theletter "B" means belted-bias ply con-
struction.
5. Maximum permissible inflation
pressure
This number is the greatest amount of air pressure that should be put in
the tyre. Do not exceed the maximum
permissible inflation pressure. Refer
to the Tyre and Loading Information
label for recommended inflation
pressure.
6. Maximum load rating
This number indicates the maximum
load in kilograms and pounds that
can be carried by the tyre. When
replacing the tyres on the vehicle,
always use a tyre that has the same
load rating as the factory installed
tyre.
7. Uniform tyre quality grading
Quality grades can be found where
applicable on the tyre sidewall
between tread shoulder and maxi-
mum section width.
For example:
TREADWEAR 200
TRACTION AA
TEMPERATURE A Tread wear
The tread wear grade is a compara-
tive rating based on the wear rate ofthe tyre when tested under controlled
conditions on a specified govern-
ment test course. For example, a tyre
graded 150 would wear one-and-a-
half times (1½) as well on the gov-
ernment course as a tyre graded100.
The relative performance of tyres depends upon the actual conditions
of their use, however, and may
depart significantly from the norm
due to variations in driving habits,
service practices and differences in
road characteristics and climate.
These grades are molded on the
side-walls of passenger vehicle
tyres. The tyres available as standard
or optional equipment on your vehi-
cle may vary with respect to grade.