2004 Hyundai Sonata heating

1- 72 FEATURES OF YOUR HYUNDAI
B970A01Y-AATAUTOMATIC HEATING AND COOLING
CONTROL SYSTEM (If installed)
Your Hyundai is equipped with an automatic
heating and cooling control system controlled
by simply setting the desired temperature.
TYPE B (With Air Quality System)
HEF-021
HEF-022 B970B03Y-GAT
Heating and Cooling Controls
1. Blower Fan Control Switch
2. AUTO (Automatic Control)Switch
3. OFF Switch
4. Display Window
5. Temperature Control
6. Defroster Switch
7. Rear Window Defroster Switch
8. Air Flow Control Switch
9. Air Conditioning Switch
10.Ambient Switch
11.Air lntake Control Switch
12.Air Quality System Switch (If installed)
TYPE A (Without Air Quality System)

FEATURES OF YOUR HYUNDAI 1- 73
B970C03L-AATAutomatic Operation
The FATC (Full Automatic Temperature Con-
trol) system automatically controls heating and
cooling as follows:
1. Push the "AUTO" switch. The indicator light
will illuminate confirming that the Face, Floor
and/or Bi-Level modes as well as the blower
speed and, air conditioner will be controlled
automatically.2. Push the "TEMP" button to set the desired
temperature.
The temperature will increase to the maxi-
mum 90°F(32°C) by pushing on the button.
Each push of the button will cause the tem-
perature to increase by 1°F(0.5°C).
The temperature will decrease to the mini-
mum 62°F(17°C) by pushing on the button.
Each push of the button will cause the tem-
perature to decrease by 1°F(0.5°C).
NOTE:If the battery has been discharged or dis-
connected, the temperature mode will reset
to Centigrade degrees.
This is a normal condition and you can
change the temperature mode from Centi-
grade to Fahrenheit as follows;
Press the TEMP down ( ) button 3 seconds
or more with the AMB button held down.
The display shows that the unit of tempera-
ture is adjusted to Centigrade or Fahrenheit
(°C
→ →→ →
→ °F or °F
→ →→ →
→ °C).
NOTE:Never place anything over the sensor which
is located on the instrument panel to en-
sure better control of the heating and cool-
ing system.
HEF-040HEF-033
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Photo Sensor

1- 74 FEATURES OF YOUR HYUNDAI
HEF-024
B980B02Y-AATFan Speed Control Switch
The fan speed can be set to the desired speed
by pressing the appropriate fan speed control
button. The higher the fan speed is, the more air
is delivered. Pressing the "OFF" button turns off
the fan.
B670C01Y-AATAir Intake Control Switch
(Without A.Q.S)
This is used to select fresh outside air or
recirculation inside air.
To change the air intake control mode, (Fresh
mode, Recirculation mode) push the control
button.
FRESH MODE ( ) : The indicator light on the
button goes on when the air intake control is in
fresh mode.
RECIRCULATION MODE ( ) : The indicator
light on the button is illuminated when the air
intake control is in recirculation mode.
With the "Fresh" mode selected, air enters the
vehicle from the outside and is heated or cooled
according to the function selected.
B995A02Y-GATAMBIENT SWITCH
B980A01Y-AATMANUAL OPERATION
The heating and cooling system can be con-
trolled manually as well as by pushing buttons
other than the "AUTO" button. At this state, the
system sequentially works according to the
order of buttons selected.
The function of the buttons which are not se-
lected will be controlled automatically.
Press the "AUTO" button in order to convert to
automatic control of the system. Pressing the button displays the ambient tem-
perature on the LCD.
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FEATURES OF YOUR HYUNDAI 1- 75
With the "Recirculation" mode selected, and air
from within the passenger compartment will be
drawn through the heating system and heated
or cooled according to the function selected.
NOTE:o It should be noted that prolonged opera-
tion of the heating system in "recircula-
tion" mode will give rise to fogging 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 "Re-
circulation" mode selected may result in
the air within the passenger compart-
ment becoming excessively dry.
o When the ignition switch is turned "ON"
the air intake control will change to " "
mode (regardless of the switch posi-
tion). This is normal operation. The air
intake control operates in "AUTO" mode
when turning the ignition to the ON
position if the "AUTO" mode was used
before shutting off the engine.
B980D01Y-AATHeating and Cooling System Off
Press the "OFF" button to stop the operation of
the heating and cooling system.
B980E01Y-GATAir Flow Control
This is used to direct the flow of air. Air can be
directed to the floor, dashboard outlets, or
windshield. Four symbols are used to represent
Face, Bi-Level, Floor, Floor-Defrost position.
Face-LevelWhen selecting the "Face" mode, the indicator
light will come on, causing air to be discharged
through the face level vents.
HEF-025HEF-043
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1- 78 FEATURES OF YOUR HYUNDAI
B760A06Y-AATAIR CONDITIONER FILTER (FOR
EVAPORATOR AND BLOWER UNIT)
(If installed)
The air conditioner filter is located in the evapo-
rator behind the glove box.
It operates to decrease pollutants the amount of
entering the car.
CAUTION:o Replace the filter every 12,000 miles
(20,000 km) or once a year.
If the car is being driven in severe condi-
tions such as dusty, rough roads, more
frequent air conditioner filter inspec-
tions and changes are required.
o When the air flow rate is suddenly de-
creased, it must be checked at an autho-
rized dealer.
o If your vehicle is not equipped with this
filter, it can be installed by your dealers.
Check with your dealer for details.
!
B740D01Y-AATOperation Tips
o If the interior of the car is hot when you first
get in, open the windows for a few minutes
to expel the hot air.
o When you are using the air conditioning
system, keep all windows closed to keep hot
air out.
o When moving slowly, as in heavy traffic, shift
to a lower gear. This increases engine speed,
which in turn increases the speed of the air
conditioning compressor.
o On steep grades, turn the air conditioning off
to avoid the possibility of the engine over-
heating.
o During winter months or in periods when the
air conditioning is not used regularly, run the
air conditioning once every month for a few
minutes. This will help circulate the lubri-
cants and keep your system in peak oper-
ating condition.
B760A01Y
Inside of a
vehicle
Evaporator coreFilterBlowerOutside air
Inside air

1- 90 FEATURES OF YOUR HYUNDAI
B260D02O-AAT1. Playing CD
o Insert the CD with the label facing upward.
o Insert the CD to start CD playback, during
radio operation.
o When a disc is in the CD deck, if you press
the play button, the CD player will begin
playing even if the radio is being used.
o The CD player can be used when the ignition
switch is in either the "ON" or "ACC" position.
2. FF/REW ( / )
If you want to fast forward or reverse through
the compact disc track, push and hold in the FF
( ) or REW ( ) button.
When you release the button, the compact disc
player will resume playing.
3. TRACK UP/DOWN
o The desired track on the disc currently being
played can be selected using the track
number.
o Press once to skip forward to the beginn-
ing of the next track. Press once to skip
back to the beginning of the track.
4. SCAN Buttono Press the SCAN button to playback the first
10 seconds of each track.
o Press the SCAN button again within 10 sec.
for the desired track.
5. REPEAT Button
o To repeat the music you are listening to,
press the RPT button. To cancel , press
again.
o If you do not release RPT operation, when
the track ends, it will automatically be re-
played.
This process will be continued until you push
the button again.
6. EJECT Button
When the EJECT button is pressed with
the CD loaded, the CD is ejected.
NOTE:o To assure proper operation of the unit,
keep the vehicle interior temperature
within a normal range by using the
vehicle’s air conditioning or heating sys-
tem.
o When replacing the fuse, replace it with
a fuse having the correct capacity.
o The preset station frequencies are all
erased when the car battery is discon-
nected. Therefore, all data will have to be
set again if this should occur.
o Do not add any oil to the rotating parts.
Keep magnets, screwdrivers and other
metallic objects away from the tape
mechanism and head.
o This equipment is designed to be used
only in a 12 volt DC battery system with
negative ground.
o This unit is made of precision parts. Do
not attempt to disassemble or adjust
any parts.
o When driving your vehicle, be sure to
keep the volume of the unit set low
enough to allow you to hear sounds
coming from the outside.
o Do not expose this equipment (includ-
ing the speakers) to water or excessive
moisture.

1- 98 FEATURES OF YOUR HYUNDAI
H290F02O-GAT1. CD Select Button
o Insert the CD with the label facing upward.
o Insert the CD to start CD playback, during
radio operation or cassette tape playing.
o When a disc is in the CD deck, if you press
the play button the CD player will begin
playing even if the radio or cassette player
is being used.
o The CD player can be used when the ignition
switch is in either the "ON" or "ACC" position.
2. FF/REW ( / )
If you want to fast forward or reverse through
the compact disc track, push and hold in the FF
( ) or REW ( ) button.
When you release the button, the compact disc
player will resume playing.
3. TRACK UP/DOWN
o The desired track on the disc currently being
played can be selected using the track
number.
o Press button once to skip forward to the
beginning of the next track. Press button
once to skip back to the beginning of the
track.
4. REPEAT
o To repeat the music you are listening to,
press the RPT button. To cancel , press
again.
o If you do not release RPT operation when the
track ends, it will automatically be replayed.
This process will be continued until you push
the button again.
5. EQUALIZER Button
Press the EQ button to select the CLASSIC,
JAZZ, ROCK and DEFEAT MODE for the
desired tone quality. Each press of the button
changes the display as follows;
NOTE:o To assure proper operation of the unit,
keep the vehicle interior temperature
within a normal range by using the
vehicle's air conditioning or heating
system.
o When replacing the fuse, replace it with
a fuse having the correct capacity.
o The preset station frequencies are all
erased when the car battery is discon-
nected. Therefore, all data will have to be
set again if this should occur.
o Do not add any oil to the rotating parts.
Keep magnets, screwdrivers and other
metallic objects away from the tape
mechanism and head.
o This equipment is designed to be used
only in a 12 volt DC battery system with
negative ground.
o This unit is made of precision parts. Do
not attempt to disassemble or adjust
any parts.
o When driving your vehicle, be sure to
keep the volume of the unit set low
enough to allow you to hear sounds
coming from the outside.
o Do not expose this equipment (includ-
ing the speakers and tape) to water or
excessive moisture.
6. CD EJECT Button
When the button is pressed with the CD
loaded, the CD is ejected.
7. SCAN Button (If installed)
o Press the SCAN button to playback the first
10 seconds of each track.
o Press the SCAN button again within 10 sec.
for the desired track. CLASSIC → JAZZ → ROCK → DEFEAT
↑

DRIVING YOUR HYUNDAI 2- 5
!
C050B01A-AATNormal Conditions:
The Starting Procedure:
1. Insert key, and fasten the seat belt.
2. Depress the clutch pedal fully and place the
gearshift lever (manual transaxle) in neutral
or the selector lever (automatic transaxle) in
"P" (park) position.
3. After turning the ignition key to the "ON"
position, make certain all warning lights and
gauges are functioning properly before start-
ing the engine.
WARNING:Be sure that the clutch is fully depressed
when starting a manual transaxle vehicle.
Your manual transaxle equipped vehicle
will not start unless the clutch pedal is fully
depressed. On a manual transaxle equipped
vehicle that can be started without de-
pressing the clutch, there is the potential to
cause
damage to the vehicle or injury to someone
inside or outside the vehicle as a result of
the forward or backward movement of the
vehicle that will occur if the clutch is not
depressed when the vehicle is started.4. Turn the ignition key to the "Start" position
and release it when the engine starts.
After the engine has started, allow the engine
to run for 10 to 20 seconds prior to placing
the vehicle in gear.
The starter should not be operated for more
than 15 seconds at a time. Wait 15-30 sec-
onds between starting attempts to protect
the starter from overheating.
C070A02A-AAT
OPERATING THE MANUAL
TRANSAXLE
Your Hyundai's manual transaxle has a con-
ventional shift pattern. This shift pattern is im-
printed on the shift knob. The transaxle is fully
synchronized in all forward gears so shifting to
either a higher or a lower gear is easily accom-
plished.
NOTE:o To shift into reverse, rest the lever in
neutral for at least 3 seconds after your
car is completely stopped. Then move
the lever into the reverse position.
o During cold weather, shifting may be
difficult until the transaxle lubricant has
warmed up. This is normal and not harm-
ful to the transaxle.
o If you've come to a complete stop and
it's hard to shift into 1st or R(Reverse),
put the shift lever in N(Neutral) position
and release the clutch. Press the clutch
pedal back down, and then shift into 1st
or R(Reverse) gear position.
o Do not use the shift lever as a handrest
during driving, as this can result in pre-
mature wear of the transaxle shift forks.
!CAUTION:When downshifting from fifth gear to fourth
gear, caution should be taken not to inad-
vertently press the gear lever sideways in
such a manner that second gear is en-
gaged. Such a drastic downshift may cause
the engine speed to increase to the point
that the tachometer will enter the red-zone.
Such over-revving of the engine may pos-
sibly cause engine damage.
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