air conditioning Hyundai Sonata

473
Features of your vehicle
Defrost-level (A, D)
Most of the air flow is directed to the windshield with a small amount of air
directed to the side window defrosters.Instrument panel vents
The outlet port can be opened or closed
separately using the horizontal thumb-
wheel. To close the vent, rotate it left to
the maximum position. To open the vent,
rotate it right to the desired position.
Also, you can adjust the direction of air
delivered from these vents using the vent
control lever as shown.D240202ANF-EA
Temperature control
The temperature will increase to the maxi-
mum (HI) by pushing the up button. Each
push of the button will cause the tempera-
ture to increase by 0.5°C/1°F.
The temperature will decrease to the mini-
mum (LO) by pushing the down button.
Each push of the button will cause the
temperature to decrease by 0.5°C/1°F.
When set to the lowest temperature set-
ting, the air conditioning will operate con-
tinuously.
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475
Features of your vehicle
✽✽NOTICE
It should be noted that prolonged oper-
ation of the heating in recirculated airposition will cause fogging of the wind-shield and side windows and the air
within the passenger compartment willbecome stale.
In addition, prolonged use of the air
conditioning with the recirculated air
position selected, will result in excessive-
ly dry air in the passenger compart-ment.
D240204AEN-EA
Air quality control (if equipped)
The air inflow from outside the vehicle
can be automatically controlled. Press
the button to activate the air quality con-trol system.
When using AQS mode, AQS(Air Quality Control System) automatically sensesoutdoor air pollutants and minimises
them from entering the vehicle, however,
unpleasant or foul odors that might be
present may still be noticeable within the
vehicle. Exhaust gas cutoff mode :
Air enters the vehicle from the outside.
If exhaust gas enters the vehicle from the
outside, the exhaust gas cutoff mode is
automatically converted from the outsideair position to the recirculated air position
to prevent exhaust gas from entering the
vehicle.
✽✽
NOTICE
It should be noted that prolonged oper-
ation of the heating system in recircula-
tion mode will create misting of thewindshield and side windows and the air
within the passenger compartment will
become stale. In addition, prolonged use
of the air conditioning with the recircu-
lation mode selected may result in the
air within the passenger compartment
becoming excessively dry.
WARNING
Continued climate control system operation in the recirculated air
position may allow humidity to
increase inside vehicle which may
fog the glass and obscure visibility.
Do not sleep in a vehicle with air conditioning or heating system on.
It may cause serious harm or death
due to a drop in the oxygen level
and/or body temperature.
Continued climate control system operation in the reciruclated air
position can cause drowsiness or
sleepiness, and loss of vehicle
control. Set the air intake control tothe outside (fresh) air position as
much as possible while driving.
ONF048129
CAUTION
If the windows fog up with the
Recirculation or AQS mode select- ed, set the air intake control to thefresh air position or AQS control to OFF.

Features of your vehicle
76
4
D240205AUN
Fan speed control
The fan speed can be set to the desired
speed by pressing the fan speed control
button.
The higher the fan speed is, the more air
is delivered.
Pressing the OFF button turns off the
fan. D240206AUN
Air conditioning
Push the A/C button to turn the air condi- tioning system on (indicator light will illu-minate).
Push the button again to turn the air con-
ditioning system off.
D240208AUN
OFF mode
Push the OFF button to turn off the air cli-
mate control system. However you can
still operate the mode and air intake but-
tons as long as the ignition switch is inthe position ON.
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477
Features of your vehicle
WINDSHIELD DEFROSTING AND DEFOGGING
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For maximum defrosting, set the temper- ature control to the extreme right/hot posi-
tion and the fan speed control to the high-est speed.
If warm air to the floor is desired while defrosting or defogging, set the mode tothe floor-defrost position.
Before driving, clear all snow and ice from the windshield, rear window, outside rear
view mirrors, and all side windows.
Clear all snow and ice from the bonnet and air inlet in the cowl grill to improveheater and defroster efficiency and to
reduce the probability of fogging up insideof the windshield. Manual climate control system D250101AFD
To defog inside windshield
1. Select any fan speed except “0” posi-
tion.
2. Select desired temperature.
3. Select the or position.
4. The outside (fresh) air and air condi- tioning will be selected automatically.
If the air-conditioning and outside (fresh) air position are not selected automatical-
ly, press the corresponding button manu-
ally. D250102AFD
To defrost outside windshield
1. Set the fan speed to the highest
(extreme right) position.
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.
ONF048092
WARNING - Windshield
heating
Do not use the or position during cooling operation in
extremely humid weather. The dif-
ference between the temperature ofthe outside air and that of the wind-shield could cause the outer sur-
face of the windshield to fog up,
causing loss of visibility. In this
case, set the mode selection knob
or button to the position and
fan speed control knob or button to
the lower speed.
ONF048093

Features of your vehicle
78
4
Automatic climate control system D250201AFD
To defog inside windshield
1. Select desired fan speed.
2. Select desired temperature.
3. Press the defrost button ( ).
4. The air-conditioning will be turned on
according to the detected ambient
temperature, outside (fresh) air posi-
tion and higher fan speed will be
selected automatically.
If the air-conditioning, outside (fresh) air
position and higher fan speed are not
selected automatically, adjust the corre-
sponding button or knob manually.
If the position is selected, lower fan
speed is controlled to higher fan speed. D250202AFD
To defrost outside windshield
1. Set fan speed to the highest position.
2. Set 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 controlled to higher fan speed. D250300AUN
Defogging logic
To reduce the probability of fogging up
the inside of the windshield, the air intakeor air conditioning are controlled auto-
matically according to certain conditions
such as or position. To cancel or
return the defogging logic, do the follow-
ings.
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479
Features of your vehicle
D250301AFD
Manual climate control system
1. Turn the ignition switch to the ON posi-tion.
2. Turn the mode selection knob to the defrost position ( ).
3. Push the air intake control button ( ) at least 5 times within 3 sec-
onds.
The indicator light in the air intake control
button will blink 3 times with 0.5 second
of interval. It indicates that the defogging
logic is canceled or returned to the pro-
grammed status.
If the battery has been discharged or dis-
connected, it is reset to the defog logic
status. D250302AUN
Automatic climate control system
1. Turn the ignition switch to the ON posi-
tion.
2. Select the defrost position pressing defrost button ( ).
3. While holding the air conditioning but- ton (A/C) pressed, press the air intake
control button ( ) at least 5 times
within 3 seconds.
The A/C display 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 is reset to the defog logic
status.
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533
Driving your vehicle
Use your air conditioning sparingly.The air conditioning system is operat-
ed by engine power so your fuel econ-
omy is reduced when you use it.
Open windows at high speeds can reduce fuel economy.
Fuel economy is less in crosswinds and headwinds. To help offset some of
this loss, slow down when driving in
these conditions.
Keeping a vehicle in good operating con-
dition is important both for economy and
safety. Therefore, have an authorised
HYUNDAI dealer perform scheduled
inspections and maintenance.
WARNING - Engine off dur-
ing motion
Never turn the engine off to coast
down hills or anytime the vehicle is
in motion. The power steering and
power brakes will not function
properly without the engine run-
ning. Instead, keep the engine on
and downshift to an appropriate
gear for engine braking effect. In
addition, turning off the ignition
while driving could engage the
steering wheel lock resulting in
loss of vehicle steering which
could cause serious injury ordeath.

What to do in an emergency
6
6
IF THE ENGINE OVERHEATS
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If your temperature gauge indicates over-
heating, you experience a loss of power,
or hear loud pinging or knocking, the
engine is probably too hot. If this hap-
pens, you should:
1. Pull off the road and stop as soon as it is safe to do so.
2. Place the gear selector lever in P (automatic transaxle) or neutral (manu-
al transaxle) and set the parking brake.
If the air conditioning is on, turn it off.
3. If engine coolant is running out under the car or steam is coming out from
the bonnet, stop the engine. Do notopen the bonnet until the coolant has
stopped running or the steaming has
stopped. If there is no visible loss of
engine coolant and no steam, leave
the engine running and check to be
sure the engine cooling fan is operat-
ing. If the fan is not running, turn the
engine off.
4. While engine is switched off, check to see if the water pump drive belt is
missing. If it is not missing, check to
see that it is tight. If the drive belt
seems to be satisfactory, check for
coolant leaking from the radiator,
hoses or under the car. (If the air con-
ditioning had been in use, it is normal
for cold water to be draining from it
when you stop). 5. If the water pump drive belt is broken
or engine coolant is leaking out, stop the engine immediately and call the
nearest authorised HYUNDAI dealer
for assistance. 6. If you cannot find the cause of the
overheating, wait until the engine tem-
perature has returned to normal. Then,if coolant has been lost, carefully add
coolant to the reservoir to bring the
fluid level in the reservoir up to the
halfway mark.
7. Proceed with caution, keeping alert for further signs of overheating. If over-heating happens again, call an autho-
rised HYUNDAI dealer for assistance.
CAUTION
Serious loss of coolant indicates
there is a leak in the cooling systemand this should be checked as soonas possible by an authorisedHYUNDAI dealer.
WARNING
While the engine is running, keep
hair, hands and clothing away from
moving parts such as the fan and
drive belts to prevent injury.
WARNING
Do not remove the radiator cap
when the engine is hot. This can
allow coolant to be blown out of the
opening and cause serious burns.

77
Maintenance
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At least monthly:
Check coolant level in the enginecoolant reservoir.
Check the operation of all exterior lights, including the stoplights, turn sig-
nals and hazard warning flashers.
Check the inflation pressures of all tyres including the spare. G030104AUN-EA
At least twice a year
(i.e., every Spring and Fall) :
Check radiator, heater and air condi- tioning hoses for leaks or damage.
Check windshield washer spray and wiper operation. Clean wiper blades
with clean cloth dampened with wash-er fluid.
Check headlight alignment.
Check muffler, exhaust pipes, shields and clamps.
Check the lap/shoulder belts for wear and function.
Check for worn tyres and loose wheel nuts. G030105AFD-EA
At least once a year :
Clean body and door drain holes.
Lubricate door hinges, check straps
and bonnet hinges.
Lubricate door and bonnet locks and latches.
Lubricate door rubber weatherstrips.
Check the air conditioning system.
Inspect and lubricate automatic transaxle linkage and controls.
Clean battery and terminals.
Check the brake (and clutch) fluid level.

723
Maintenance
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Manual transaxle fluid (if equipped)
Inspect the manual transaxle fluid
according to the maintenance schedule.
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Automatic transaxle fluid (if equipped)
The fluid level should be in the "HOT"
range of the dipstick, after the engine
and transaxle are at normal operating
temperature. Check the automatic
transaxle fluid level with the engine run-
ning and the transaxle in neutral, with the
parking brake properly applied.
G051500AUN Brake hoses and lines
Visually check for proper installation,
chafing, cracks, deterioration and any
leakage. Replace any deteriorated or
damaged parts immediately.G051600AUN 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 4specification.
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Parking brake
Inspect the parking brake system includ-
ing the parking brake lever and cables.
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Brake pads, calipers and rotors
Check the pads for excessive wear, discs
for run out and wear, and calipers for fluid
leakage.
G052100AUN Suspension mounting bolts
Check the suspension connections for
looseness or damage. Retighten to the
specified torque.G052200AUN
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.
G052400AUN 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.
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Air conditioning refrigerant (if equipped)
Check the air conditioning lines and con-
nections for leakage and damage.