2005 Hyundai Sonata check engine

YOUR VEHICLE AT A GLANCE
B255A01NF-AATINDICATOR SYMBOLS ON THE INSTRUMENT CLUSTER
High Beam Indicator LightDoor Ajar Warning LightSeat Belt Reminder LightTurn Signal Indicator Lights
ABS Service Reminder Indicator (If Installed)
Low Oil Pressure Warning Light
Parking Brake/Low Brake Fluid Level
Warning Light
Charging System Warning Light
SRS (Airbag) Warning Light
Cruise Indicator Light Check Engine - Malfunction Indicator Light (MIL)
Electronic Stability Control (ESC) Indicator
Lights (If Installed)
Low Windshield Washer Fluid Level Warning LightFront Fog Light Indicator Light
Cruise SET Indicator LightLow Fuel Level Warning Light
Trunk Lid Open Warning Light
* More detailed explanations of these items will be found beginning on page 1-52.

1
FEATURES OF YOUR HYUNDAI
51
1. Tachometer
2. Door Ajar Warning Light
3. Seat Belt Warning Light (Driver's side)
4. High Beam Indicator Light
5. Turn Signal Indicator Lights
6. Speedometer
7. Electronic Stability Control (ESC) Indicator Lights
(If Installed)
8. Front Fog Light Indicator Light
9. ABS Service Reminder Indicator (SRI) (If Installed)
10. Coolant Temperature Gauge
11. Fuel Gauge12. Parking Brake/Low Brake Fluid Level Warning Light
13. Low Oil Pressure Warning Light
14. Charging System Warning Light
15. Low Windshield Washer Fluid Level Warning Light
16. Check Engine - Malfunction Indicator Light (MIL)
17. SRS (Airbag) Warning Light
18. Automatic Transaxle Position Indicator Light (If Installed)
19. Odometer/ Trip Odometer/ Trip Computer (If Installed)
20. CRUISE Indicator Light
21. Cruise SET Indicator Light
22. Trunk Lid Open Warning Light
23. Low Fuel Warning Light

1FEATURES OF YOUR HYUNDAI52
WARNING AND INDICATOR LIGHTSB260B01JM-AAT
SRS (Airbag) Warning Light
The SRS warning light comes on for about 6
seconds after the key is turned to the "ON"
position or after the engine is started, after which
it will go out.
This light also comes on when the SRS is not
working properly. If the AIRBAG warning light
does not come on, or continuously remains on
after operating for about 6 seconds when you
turned the ignition key to the "ON" position or
started the engine, or if it comes on while driving,
have the SRS inspected by an authorized
Hyundai dealer.B260D01A-AAT
Turn Signal Indicator Lights
The blinking green arrows on the instrument
panel show the direction indicated by the turn
signals. If the arrow comes on but does not blink,
blinks more rapidly than normal, or does not
illuminate at all, a malfunction in the turn signal
system is indicated. Your dealer should be
consulted for repairs.
B260E01NF-AAT
Seat Belt Reminder Light
and Chime (Driver's side)
The driver's seat belt reminder light blinks and
the warning chime sounds for 6 seconds when
the ignition key is turned from the "OFF" position
to the "ON" or "START" position to remind the
driver to fasten the driver's seat belt.B260F01A-AAT
High Beam Indicator Light
The high beam indicator light comes on when-
ever the headlights are switched to the high
beam or flash position.
B260G01A-AAT
Low Oil Pressure Warning Light
CAUTION:
If the low oil pressure warning light stays on
while the engine is running, serious engine
damage may result. The oil pressure warning
light comes on whenever there is insufficient
oil pressure. In normal operation, it should
come on when the ignition switch is turned on,
then go out when the engine is started. If the
oil pressure warning light stays on while the
engine is running, there is a serious malfunc-
tion.
If this happens, stop the car as soon as it is safe
to do so, turn off the engine and check the oil
level. If the oil level is low, fill the engine oil to
the proper level and start the engine again. If
the light stays on with the engine running, turn
the engine off immediately. In any instance
where the oil light stays on when the engine
is running, the engine should be checked by
a Hyundai dealer before the car is driven again.
!
B260A01Y-GAT
Front Fog Light Indicator Light
This fog indicator light comes on when the
ignition key is turned to the "ON" position and the
front fog light switch is on.

1
FEATURES OF YOUR HYUNDAI
53
!
B260H02A-AAT
Parking Brake/Low Brake Fluid
Level Warning Light
The brake fluid level warning light indicates that
the brake fluid level in the brake master cylinder
is low and hydraulic brake fluid conforming to
DOT 3 or DOT 4 specifications should be
added. After adding fluid, if no other trouble is
found, the car should be immediately and care-
fully driven to a Hyundai dealer for inspection.
If further trouble is experienced, the vehicle
should not be driven at all but taken to a dealer
by a professional towing service or some other
safe method.
Your Hyundai is equipped with dual-diagonal
braking systems. This means you still have
braking on two wheels even if one of the dual
systems should fail. With only one of the dual
systems working, more than normal pedal travel
and greater pedal pressure are required to stop
the car. Also, the car will not stop in as short a
distance with only half of the brake system
working. If the brakes fail while you are driving,
shift to a lower gear for additional engine braking
and stop the car as soon as it is safe to do so.
WARNING:
If you suspect brake trouble, have your
brakes checked by a Hyundai dealer as
soon as possible. Driving your car with a
problem in either the brake electrical sys-
tem or brake hydraulic system is danger-
ous, and could result in a serious injury or
death.Warning Light OperationThe parking brake/brake fluid level warning light
should come on when the parking brake is
applied and the ignition switch is turned to "ON"
or "START". After the engine is started, the light
should go out when the parking brake is re-
leased.
If the parking brake is not applied, the warning
light should come on when the ignition switch is
turned to "ON" or "START", then go out when
the engine starts. If the light comes on at any
other time, you should slow the vehicle and bring
it to a complete stop in a safe location off the
roadway.
B260J02A-AAT
Charging System Warning Light
The charging system warning light should come
on when the ignition is turned on, then go out
when the engine is running. If the light stays on
while the engine is running, there is a malfunc-
tion in the electrical charging system. If the light
comes on while you are driving, stop, turn off the
engine and check under the hood. First, make
certain the generator drive belt is in place. If it is,
check the tension of the belt. Do this as shown
on page 6-19 by pushing down on the center of
the belt. Have the system checked by your
Hyundai dealer as soon as possible.B260K01S-AAT
Trunk Lid Open Warning Light
This light remains on unless the trunk lid is
completely closed and latched.

1FEATURES OF YOUR HYUNDAI54
B260L02HP-GAT
Door Ajar Warning Light and
Chime
The door ajar warning light warns you that a door
is not completely closed and the chime warns
you that the key is in the ignition switch.NOTE :The warning chime only sounds whenever
the key is in the ignition switch and the
driver's side front door is open simulta-
neously. The chime sounds until the key is
removed from the ignition switch or the
driver's side front door is closed.
!
B260M01A-AAT
Low Fuel Level Warning Light
The low fuel level warning light comes on when
the fuel tank is approaching empty. When it
comes on, you should add fuel as soon as
possible. Driving with the fuel level warning light
on or with the fuel level below "E" can cause the
engine to misfire and damage the catalytic
converter.
B260P02Y-GAT
ABS Service Reminder
Indicator (SRI) (If Installed)
When the key is turned to the "ON" position, the
Anti-Lock Brake System indicator will come on
and then go off in a few seconds. If the ABS SRI
remains on, comes on while driving, or does not
come on when the key is turned to the "ON"
position, this indicates that there may be a
problem with the ABS.
If this occurs, have your vehicle checked by
your Hyundai dealer as soon as possible. The
normal braking system will still be operational,
but without the assistance of the anti-lock brake
system.
WARNING:
If both the ABS SRI and Parking Brake/
Brake fluid level warning lights remain "ON"
or come on while driving, there may be a
problem with E.B.D. (Electronic Brake Force
Distribution).
If this occurs, avoid sudden stops and have
your vehicle checked by your Hyundai dealer
as soon as possible.
B260N02A-AAT
Check Engine - Malfunction In-
dicator Light (MIL)
This light illuminates when there is a malfunction
of an exhaust gas related component, and the
system is not functioning properly so that the
exhaust gas regulation values are not satisfied.
This light will also illuminate when the ignition key
is turned to the "ON" position, and will go out in a
few seconds after the engine is started. If it
illuminates while driving, or does not illuminate
when the ignition key is turned to the "ON" position,
take your car to your nearest authorized Hyundai
dealer and have the system checked.
B265C01NF-AAT
Electronic Stability Control
(ESC) Indicator Lights
(If Installed)
The electronic stability control indicators change
operation according to the ignition switch posi-
tion and whether the system is in operation or
not.
They will illuminate when the ignition key is
turned to the "ON" position, but should go out
after three seconds. If the ESC or ESC-OFF
indicator stays on, take your car to your autho-
rized Hyundai dealer and have the system
checked. See section 2 for more information
about the ESC.

1FEATURES OF YOUR HYUNDAI56
B330A03A-AATTACHOMETERThe tachometer registers the speed of your
engine in revolutions per minute (rpm).
CAUTION:
The engine should not be raced to such a
speed that the needle enters the red zone
on the tachometer face. This can cause
severe engine damage and may void your
warranty coverage.
!
!
B290A03A-AATENGINE COOLANT TEMPERATURE
GAUGE
WARNING:Never remove the radiator cap when the
engine is hot. The engine coolant is under
pressure and could erupt and cause severe
burns. Wait until the engine is cool before
adding coolant to the reservoir.The normal range is approximately in the middle
between "H" and "C". If it moves across the dial
to "H" (HOT), pull over and stop as soon as
possible and turn off the engine. Then open the
hood and, after the engine has cooled, check the
coolant level (See "If the engine overheats" on
the page 3-4.) and the water pump drive belt. If you
suspect cooling system trouble, have your cool-
ing system checked by a Hyundai dealer as soon
as possible.
B290A01NF
B330A01NFRed
Zone

1FEATURES OF YOUR HYUNDAI88
WARNING:
o If you open the fuel filler cap during high
ambient temperatures, a slight "pres-
sure sound" may be heard. This is nor-
mal and not a cause for concern.
Whenever you open the fuel filler cap,
turn it slowly.
o Make sure the fuel filler cap is replaced
and securely seated after fueling. Failure
to replace or fully seat the fuel filler cap
will result in fuel vapors escaping into
the atmosphere and the check engine
" " indicator illuminating.
o Do not "TOP-OFF" after the first nozzle
shut off when refueling.
o Automotive fuels are flammable/explo-
sive materials. When refueling, please
note the following guidelines carefully.
- Before touching the fuel nozzle or fuel
filler cap, have one's hands in contact
with metal parts away from the filler
neck to discharge static electricity.
!
!
WARNING:
o The fuel cap must be tightened until the
cap clicks, otherwise " " light will
illuminate.
o Gasoline vapors are dangerous. Before
refueling, always stop the engine and
never allow sparks or open flames near
the filler area. If you need to replace the
filler cap, use a genuine Hyundai re-
placement part.
HNF2021
!
WARNING:
- Do not get back in the vehicle while
refueling. Do not operate anything that
can produce static electricity. Static
electricity discharge can ignite fuel
vapors resulting in an explosion.
- When using a portable fuel container,
be sure to place the container on the
ground while refueling. Static electric-
ity discharge from the container can
ignite fuel vapors causing a fire. While
starting refueling, contact should be
maintained until the filling is complete.
- Do not use cellular phones around a
gas station. The electric current or elec-
tronic interference from cellular phones
can ignite fuel vapors causing a fire.
- When refueling, always turn the engine
off. Sparks by engine compartment
electrical equipment can ignite fuel
vapors causing a fire. After refueling,
check to make sure the fuel filler cap is
securely closed, and then start the
engine.
- Do not smoke or try to light cigarettes
around a gas station. Automotive fuels
are flammable.

2
DRIVING YOUR HYUNDAI
2
WARNING: ENGINE EXHAUST CAN BE DANGEROUS!
C010A03A-AATEngine exhaust fumes can be extremely dangerous. If, at any time, you smell exhaust fumes inside the vehicle, open the windows immediately.
o Do not inhale exhaust fumes.
Exhaust fumes contain carbon monoxide, a colorless, odorless gas that can cause unconsciousness and death by asphyxiation.
o 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 your Hyundai dealer.
o 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.
o 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 windshield are kept clear
of snow, ice, leaves or other obstructions.
!!
PROPOSITION 65 WARNING:
Engine exhaust and a wide variety of automobile components and parts, including components found in the interior furnishings
in a vehicle, contain or emit chemicals known to the State of California to cause cancer and birth defects and reproductive harm.
In addition, certain fluids contained in vehicles and certain products of component wear contain or emit chemicals known to
the State of California to cause cancer and birth defects or other reproductive harm.