2012 Hyundai Equus Owner's Manual

4103
Features of your vehicle
Air quality control system
(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 senses
outdoor air pollutants and minimizes
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 outside
air 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 give rise to misting of the
windshield 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.
Fan speed control
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Rear (Type A) (if equipped)
Rear (Type B) (if equipped)
CAUTION
If the windows fog up with the
Recirculation or A.Q.S mode select-
ed, set the air intake control to the
fresh air position or A.Q.S control
to OFF.

Features of your vehicle
104 4
The fan speed can be set to the desired
speed by pressing the fan speed control
button.
To change the fan speed, press the right
of the button ( ) for higher speed, or
press the left of the button ( ) for lower
speed. To turn the fan speed control off,
press the OFF button.
Pressing the OFF button turns off the
fan.
Air conditioning
Press the A/C button to turn the air con-
ditioning system on (indicator light will
illuminate).
Press the button again to turn the air
conditioning system off.
OFF mode
Press the OFF button to turn off the air
climate control system. However, you can
still operate the mode and air intake but-
tons as long as the engine start/stop but-
ton is in the ON position.
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4105
Features of your vehicle
Climate information screen selection
button
To change the screen into the climate
information screen, press the climate
information screen selection button.
System operation
Ventilation
1. Set the mode to the position.
2. Set the air intake control to the outside
(fresh) air position.
3. Set the temperature control to the
desired position.
4. Set the fan speed control to the
desired speed.
Heating
1. Set the mode to the position.
2. Set the air intake control to the outside
(fresh) air position.
3. Set the temperature control to the
desired position.
4. Set the fan speed control to the
desired speed.
5. If dehumidified heating is desired, turn
the air conditioning system (if
equipped) on.
• If the windshield fogs up, set the mode
to the
orpush the front defrost but-
ton ().Operation Tips
• To keep dust or unpleasant fumes from
entering the car through the ventilation
system, temporarily set the air intake
control to the recirculated air position.
Be sure to return the control to the
fresh air position when the irritation
has passed to keep fresh air in the
vehicle. This will help keep the driver
alert and comfortable.
• Air for the heating/cooling system is
drawn in through the grilles just ahead
of the windshield. Care should be
taken that these are not blocked by
leaves, snow, ice or other obstructions.
• To prevent interior fog on the wind-
shield, set the air intake control to the
fresh air position and fan speed to the
desired position, turn on the air condi-
tioning system, and adjust the temper-
ature control to desired temperature.
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Features of your vehicle
106 4
Air conditioning
HYUNDAI Air Conditioning Systems are
filled with environmentally friendly
R-134a refrigerant.
1. Start the engine. Press the air condi-
tioning button.
2. Set the mode to the position.
3. Set the air intake control to the outside
air or recirculated air position.
4. Adjust the fan speed control and tem-
perature control to maintain maximum
comfort.
✽NOTICE
• When using the air conditioning sys-
tem, monitor the temperature gauge
closely while driving up hills or in
heavy traffic when outside tempera-
tures are high. Air conditioning sys-
tem operation may cause engine over-
heating. Continue to use the blower
fan but turn the air conditioning sys-
tem off if the temperature gauge indi-
cates engine overheating.
• When opening the windows in humid
weather air conditioning may create
water droplets inside the vehicle.
Since excessive water droplets may
cause damage to electrical equipment,
air conditioning should only be run
with the windows closed.
Air conditioning system operation tips
• If the vehicle has been parked in direct
sunlight during hot weather, open the
windows for a short time to let the hot
air inside the vehicle escape.
• To help reduce moisture inside of the
windows on rainy or humid days,
decrease the humidity inside the vehi-
cle by operating the air conditioning
system.
• During air conditioning system opera-
tion, you may occasionally notice a
slight change in engine speed as the
air conditioning compressor cycles.
This is a normal system operation
characteristic.
• Use the air conditioning system every
month only for a few minutes to ensure
maximum system performance.• When using the air conditioning sys-
tem, you may notice clear water drip-
ping (or even puddling) on the ground
under the passenger side of the vehi-
cle. This is a normal system operation
characteristic.
• Operating the air conditioning system
in the recirculated air position provides
maximum cooling, however, continual
operation in this mode may cause the
air inside the vehicle to become stale.
• During cooling operation, you may
occasionally notice a misty air flow
because of rapid cooling and humid air
intake. This is a normal system opera-
tion characteristics.

4107
Features of your vehicle
Climate control air filter
(if equipped)
The climate control air filter installed
behind the glove box filters the dust or
other pollutants that come into the vehi-
cle from the outside through the heating
and air conditioning system. If dust or
other pollutants accumulate in the filter
over a period of time, the air flow from the
air vents may decrease, resulting in
moisture accumulation on the inside of
the windshield even when the outside
(fresh) air position is selected. If this hap-
pens, have the climate control air filter
replaced by an authorized HYUNDAI
dealer.
✽NOTICE
• Replace the filter every 15,000 km
(10,000 miles) or once a year.
If the car is being driven in severe
conditions such as dusty or rough
roads, more frequent air conditioner
filter inspections and changes are
required.
• When the air flow rate suddenly
decreases, the system should be
checked at an authorized HYUNDAI
dealer.
Checking the amount of air con-
ditioner refrigerant and compres-
sor lubricant
When the amount of refrigerant is low,
the performance of the air conditioning is
reduced. Overfilling also has a negative
impact on the air conditioning system.
Therefore, if abnormal operation is
found, have the system inspected by an
authorized HYUNDAI dealer.
✽NOTICE
It is important that the correct type and
amount of oil and refrigerant is used.
Otherwise, damage to the compressor
and abnormal system operation may
occur.
1LDA5047 Outside air
Recirculated
air
Climate control
air filterBlower
Evaporator
coreHeater core
WARNING
The air conditioning system should
be serviced by an authorized
HYUNDAI dealer. Improper service
may cause serious injury to the
person performing the service.

Features of your vehicle
108 4
Rear vent
It will operate at the same time when you
operate the climate control system.
You can adjust the temperature by turn-
ing the temperature control knob. Turn
the knob to the red mark for warm air, or
to the blue mark for cool air.
Also, you can open or close the rear
vents as follows:
Type A
To close the vents, turn the ON/OFF
lever down. To open the vents, turn the
ON/OFF lever up.
Type B
To close the vents, press the ON/OFF
switch. To open the vents, press the
ON/OFF switch again.
Also, you can adjust the direction of air
delivery from these vents using the vent
control lever.
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Type A
Type B

4109
Features of your vehicle
• For maximum defrosting, set the tem-
perature control to the extreme
right/hot position and the fan speed
control to the highest speed.
• If warm air to the floor is desired while
defrosting or defogging, set the mode
to the floor-defrost position.
• Before driving, clear all snow and ice
from the windshield, rear window, out-
side rear view mirrors, and all side win-
dows.
• Clear all snow and ice from the hood
and air inlet in the cowl grill to improve
heater and defroster efficiency and to
reduce the probability of fogging up the
inside of the windshield.
To defog inside windshield
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.
WINDSHIELD DEFROSTING AND DEFOGGING
WARNING- Windshield
heating
Do not use the or position
during cooling operation in
extremely humid weather. The dif-
ference between the temperature of
the 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 to the lower
speed.
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Features of your vehicle
110 4
To defrost outside windshield
1. Set the fan speed to the highest posi-
tion.
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.
Defogging logic
To reduce the possibility of fogging up
the inside of the windshield, the air intake
or air conditioning are controlled auto-
matically according to certain conditions
such as or position. To cancel or
return the defogging logic, do the follow-
ing.
1. Turn the engine start/stop button to the
ON position.
2. Press the defrost button ( ).
3. While pressing the air conditioning
button (A/C), press the air intake con-
trol button at least 5 times within 3 sec-
onds.
The indicator of the air intake control but-
ton 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, it resets to the defog logic
status.
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