2011 Hyundai Sonata Air intake

Features of your vehicle90
4Manual heating and air condition-
ingThe heating and cooling system can be
controlled manually by pressing buttons
or turning knob(s) other than the AUTO
button. In this case, the system works
sequentially according to the order of
buttons or knob(s) selected.
1. Start the engine.
2. Set the mode to the desired position.
For improving the effectiveness of
heating and cooling;
- Heating:
- Cooling:
3. Set the temperature control to the desired position.
4. Set the air intake control to the outside (fresh) air position.
5. Set the fan speed control to the desired speed.
6. If air conditioning is desired, turn the air conditioning system on.
Press the AUTO button in order to con-
vert to full automatic control of the sys-
tem.
Mode selectionThe mode selection button controls the
direction of the air flow through the venti-
lation system.
The air flow outlet port is converted as
follows:
Refer to the illustration in the “Manual cli-
mate control system”. Face-Level
Air flow is directed toward the upper body
and face. Additionally, each outlet can be
controlled to direct the air discharged
from the outlet.
Bi-Level
Air flow is directed towards the face and
the floor.
Floor-Level
Most of the air flow is directed to the
floor, with a small amount of the air being
directed to the windshield and side win-
dow defrosters.
Floor & Defrost
Most of the air flow is directed to the floor
and the windshield with a small amount
directed to the side window defrosters.

OYF049112

YF HMA 4-103.QXP 12/24/2009 5:17 PM Page 90

Features of your vehicle92
4Adjusting the driver and passenger side
temperature individually
1. Press the DUAL button to operate the
driver and passenger side temperature
individually. Turning the right tempera-
ture control knob will automatically
switch to the DUAL mode as well.
2. Turn the left temperature control knob to adjust the driver side temperature.
Turn the right temperature control
knob to adjust the passenger side tem-
perature.
When the driver side temperature is set
to the highest or lowest temperature set-
ting, the DUAL mode is deactivated for
maximum heating or cooling. Adjusting the driver and passenger side
temperature equally
1. Press the DUAL button again to deac-
tivate DUAL mode. The passenger
side temperature will be set to the
same temperature as the driver side
temperature.
2. Turn the left temperature control knob. The driver and passenger side tem-
perature will be adjusted equally.
Air intake controlThis is used to select the outside (fresh)
air position or recirculated air position.
To change the air intake control position,
push the control button.

OYF049226

OYF049125

YF HMA 4-103.QXP 12/24/2009 5:17 PM Page 92

493
Features of your vehicle
Recirculated air positionWith the recirculated airposition selected, air from
the passenger compart-
ment will be drawn through
the heating system and
heated or cooled according
to the function selected.
Outside (fresh) air position With the outside (fresh) air
position selected, air enters
the vehicle from outside and
is heated or cooled accord-
ing to the function selected.✽NOTICEProlonged operation of the heater in the
recirculated air position (without air
conditioning selected) may cause fog-
ging of the windshield and side windows
and the air within the passenger com-
partment may become stale.
In addition, prolonged use of the air con-
ditioning with the recirculated air posi-
tion selected will result in excessively dry
air in the passenger compartment.
Fan speed controlThe fan speed can be set to the desired
speed by pushing the fan speed control
button.
The higher the fan speed is, the more air
is delivered.

WARNING
• Continued use of the climate con-
trol system operation in the recir-
culated air position may allow
humidity to increase inside the
vehicle which may fog the glass
and obscure visibility.
• Do not sleep in a vehicle with the 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 use of the climate con- trol system operation in the recir-
culated air position can cause
drowsiness or sleepiness, and loss
of vehicle control. Set the air intake
control to the outside (fresh) air
position as much as possible while
driving.

OYF049164

YF HMA 4-103.QXP 12/24/2009 5:17 PM Page 93

Features of your vehicle94
4Air conditioningPush 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.
OFF modePush 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 in
the ON position.

OYF049127

OYF049128

YF HMA 4-103.QXP 12/24/2009 5:17 PM Page 94

497
Features of your vehicle
Defogging logicTo reduce the probability of fogging up
the inside of the windshield, the air intake
is controlled automatically according to
certain conditions such as or
position. To cancel or return the defog-
ging logic, perform the following steps.
Manual climate control system1. 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 seconds.
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, the system resets to the pro-
grammed defogging logic.
Automatic climate control system1. Turn the ignition switch to the ON position.
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 indicator on the air intake control
button blinks 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, the system resets to the pro-
grammed defogging logic.

OYF049222

OYF049133

YF HMA 4-103.QXP 12/24/2009 5:18 PM Page 97

Driving your vehicle2
5
WARNING
- ENGINE EXHAUST CAN BE DANGEROUS!
Engine exhaust fumes can be extremely dangerous. If, at any time, you smell exhaust fumes inside the vehicle, open the win-
dows immediately.
• Do not inhale exhaust fumes.
Exhaust fumes contain carbon monoxide, a colorless, odorless gas that can cause unconsciousness and death by asphyxia-
tion.
• Be sure the exhaust system does not leak. The exhaust system should be checked whenever the vehicle is raised to change the oil or for any other purpose. If you hear
a change in the sound of the exhaust or if you drive over something that strikes the underneath side of the car, have the
exhaust system checked as soon as possible by an authorized HYUNDAI dealer.
• Do not run the engine in an enclosed area. Letting the engine idle in your garage, even with the garage door open, is a hazardous practice. Never run the engine in your
garage any longer than it takes to start the engine and back the car out.
• Avoid idling the engine for prolonged periods with people inside the car. If it is necessary to idle the engine for a prolonged period with people inside the car, be sure to do so only in an open area
with the air intake set at "Fresh" and fan operating at one of the higher speeds so fresh air is drawn into the interior.
If you must drive with the trunk lid open because you are carrying objects that make this necessary:
1. Close all windows.
2. Open side vents.
3. Set the air intake control at "Fresh", the air flow control at "Floor" or "Face" and the fan at one of the higher speeds.
To assure proper operation of the ventilation system, be sure the ventilation air intakes located just in front of the windshie ld are
kept clear of snow, ice, leaves or other obstructions.

YF hma 5.qxp 11/25/2009 5:41 PM Page 2

729
Maintenance
Replace the filter according to the
Maintenance Schedule.If the vehicle is operated in extremelydusty or sandy areas, replace the ele-ment more often than the usual recom-mended intervals. (Refer to“Maintenance under severe usage condi-tions” in this section.)
Filter inspectionThe climate control air filter should be
replaced according to the Maintenance
Schedule. If the vehicle is operated in
severely air-polluted cities or on dusty
rough roads for a long period, it should
be inspected more frequently and
replaced earlier. When you replace the
climate control air filter, replace it per-
forming the following procedure, and be
careful to avoid damaging other compo-
nents.
Filter replacement1. Open the glove box and remove the support strap (1).
CAUTION
• Do not drive with the air cleaner removed; this will result in exces-sive engine wear.
• When removing the air cleaner fil- ter, be careful that dust or dirtdoes not enter the air intake, ordamage may result.
• Use a HYUNDAI genuine part. Use of non-genuine parts could dam-age the air flow sensor.
CLIMATE CONTROL AIR FILTER

OYF079014

YF HMA 7.QXP 11/25/2009 1:46 PM Page 29

EMISSION CONTROL SYSTEMThe emission control system of your
vehicle is covered by a written limited
warranty. Please see the warranty infor-
mation contained in the Owner’s
Handbook & Warranty Information book-
let in your vehicle.
Your vehicle is equipped with an emis-
sion control system to meet all applicable
emission regulations.
There are three emission control sys-
tems, as follows.
(1) Crankcase emission control system
(2) Evaporative emission control system
(3) Exhaust emission control system
In order to assure the proper function of
the emission control systems, it is rec-
ommended that you have your car
inspected and maintained by an author-
ized HYUNDAI dealer in accordance with
the maintenance schedule in this manu-
al.Caution for the Inspection and
Maintenance Test (With Electronic
Stability Control (ESC) system)
• To prevent the vehicle from misfir-
ing during dynamometer testing,
turn the Electronic Stability Control
(ESC) system off by pressing the
ESC switch.
• After dynamometer testing is com- pleted, turn the ESC system back on
by pressing the ESC switch again.
1. Crankcase emission control systemThe positive crankcase ventilation sys-
tem is employed to prevent air pollution
caused by blow-by gases being emitted
from the crankcase. This system supplies
fresh filtered air to the crankcase through
the air intake hose. Inside the crankcase,
the fresh air mixes with blow-by gases,
which then pass through the PCV valve
into the induction system.2. Evaporative emission control(including ORVR: Onboard
Refueling Vapor Recovery)
systemThe Evaporative Emission Control
System is designed to prevent fuel
vapors from escaping into the atmos-
phere.
(The ORVR system is designed to allow
the vapors from the fuel tank to be
loaded into a canister while refueling at
the gas station, preventing the escape of
fuel vapors into the atmosphere.)
770Maintenance

YF HMA 7.QXP 11/25/2009 1:54 PM Page 70