2011 Hyundai Sonata check engine

457
Features of your vehicle
Turn signal indicatorThe blinking 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 consult-
ed for repairs.High beam indicator This indicator illuminates when the head-
lights are on and in the high beam posi-
tion or when the turn signal lever is pulled
into the Flash-to-Pass position.Tail light indicator This indicator illuminates when the tail
lights are on.
Engine oil pressure warning lightThis warning light indicates the engine oil
pressure is low.
If the warning light illuminates while driv-
ing:
1. Drive safely to the side of the road and stop.
2. With the engine off, check the engine oil level. If the level is low, add oil as
required.
If the warning light remains on after
adding oil or if oil is not available, call an
authorized HYUNDAI dealer.

CAUTION
If the engine is not stopped imme- diately after the engine oil pressurewarning light is illuminated, severedamage could result.

CAUTION
If the oil pressure warning lightstays on while the engine is run-ning, serious engine damage mayresult. The oil pressure warninglight comes on whenever there isinsufficient oil pressure. In normaloperation, it should come on whenthe ignition switch is turned on,then go out when the engine is started. If the oil pressure warninglight stays on while the engine is running, there is a serious malfunc-tion.
If this happens, stop the car assoon as it is safe to do so, turn offthe engine and check the oil level. Ifthe oil level is low, fill the engine oil to the proper level and start theengine again. If the light stays onwith the engine running, turn theengine off immediately. In anyinstance where the oil light stays onwhen the engine is running, theengine should be checked by anauthorized HYUNDAI dealer beforethe car is driven again.

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Features of your vehicle58
4
WARNING
Driving the vehicle with a warning
light on is dangerous. If the brake
warning light remains on, have the
brakes checked and repaired imme-
diately by an authorized HYUNDAI
dealer.
Parking brake & brake fluid
warning lightParking brake warning
This light is illuminated when the parking
brake is applied with the ignition switch in
the START or ON position. The warning
light should go off when the parking
brake is released. Low brake fluid level warning
If the warning light remains on, it may
indicate that the brake fluid level in the
reservoir is low.
If the warning light remains on:
1. Drive carefully to the nearest safe
location and stop your vehicle.
2. With the engine stopped, check the brake fluid level immediately and add
fluid as required. Then check all brake
components for fluid leaks.
3. Do not drive the vehicle if leaks are found, the warning light remains on or
the brakes do not operate properly.
Have the vehicle towed to any author-
ized HYUNDAI dealer for a brake sys-
tem inspection and necessary repairs.
Your vehicle is equipped with a dual-
diagonal braking system. This means you
still have braking on two wheels even if
one of the brake circuits is damaged or
malfunctions. With only one of the circuits
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 a portion
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. To check bulb operation, check whether
the parking brake and brake fluid warning
light illuminates when the ignition switch
is in the ON position.

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Features of your vehicle60
4Charging system warning
lightThis warning light indicates a malfunction
of either the generator or electrical
charging system.
If the warning light comes on while the
vehicle is in motion:
1. Drive to the nearest safe location.
2. With the engine off, check the genera- tor drive belt for looseness or break-
age.
3. If the belt is adjusted properly, a prob- lem exists somewhere in the electrical
charging system. Have an authorized
HYUNDAI dealer correct the problem
as soon as possible.Front fog light indicator (if equipped)This light comes on when the front fog
lights are ON.
Trunk lid open warninglightThis warning light illuminates when the
trunk lid is not closed securely with the
ignition in any position.Door open position indica-
torThis indicator illuminates when a door is
not closed securely.
The indicator displays which door is
opened.
Immobilizer indicator Without smart key system
This light illuminates when the immobiliz-
er key is inserted and turned to the ON
position to start the engine.
At this time, you can start the engine. The
light goes out after the engine is running.
If this light blinks when the ignition switch
is in the ON position before starting the
engine, have the system checked by an
authorized HYUNDAI dealer.
With smart key system (if equipped)
If any of the following occurs in a vehicle
equipped with the smart key, the immobi-
lizer indicator illuminates, blinks or the
light goes off.

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461
Features of your vehicle
• When the smart key is in the vehicle, ifthe engine start/stop button is turned
to the ON position, the indicator will
illuminate until the engine is started.
However, when the smart key is not in
the vehicle, if the engine start/stop but-
ton is depressed, the indicator will blink
for a few minutes to indicate that you
will not be able to start the engine.
• When the ignition switch is turned to the ON position and the indicator turns
off after 2 seconds, the system may
need repair. Have the vehicle checked
by an authorized HYUNDAI dealer.
• When the battery is weak, if the engine start/stop button is depressed, the indi-
cator will blink and you will not be able
to start the engine. However, you may
still be able to start the engine by
inserting the smart key in the smart
key holder. If smart key system related
parts need repair, the indicator blinks.
Low fuel level warning lightThis warning light indicates the fuel tank
is nearly 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.
Malfunction indicator light(MIL) (check engine light) This indicator light is part of the Engine
Control System which monitors various
emission control system components. If
this light illuminates while driving, it indi-
cates that a potential malfunction has
been detected somewhere in the emis-
sion control system.
This light will also illuminate when the
ignition switch is turned to the ON posi-
tion, 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 switch is turned to the ON
position, take your vehicle to your near-
est authorized HYUNDAI dealer and
have the system checked.
Generally, your vehicle will continue to be
drivable, but have the system checked by
an authorized HYUNDAI dealer promptly.

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Features of your vehicle62
4Engine coolant
temperature warning light(if equipped)The warning light illuminates if the tem-
perature of the engine coolant is above
257±4.5°F (125±2.5°C).
Do not continue driving with an overheat-
ed engine. If your vehicle overheats, refer
to “Overheating” in section 6.
ESC indicator (ElectronicStability Control) The ESC indicator will illuminate when
the ignition switch is turned ON, but
should go off after approximately 3 sec-
onds. When the ESC is on, it monitors
the driving conditions under normal driv-
ing conditions, the ESC light will remain
off. When a slippery or low traction con-
dition is encountered, the ESC will oper-
ate, and the ESC indicator will blink to
indicate the ESC is operating.
The ESC indicator stays on when the
ESC may have a malfunction. Take your
car to an authorized HYUNDAI dealer
and have the system checked.ESC OFF indicator The ESC OFF indicator will illuminate
when the ignition switch is turned ON,
but should go off after approximately 3
seconds. To switch to ESC OFF mode,
press the ESC OFF button. The ESC
OFF indicator will illuminate indicating
the ESC is deactivated.
Cruise indicator (if equipped)CRUISE indicator
The indicator light illuminates when the
cruise control system is enabled.
The cruise indicator light in the instru-
ment cluster is illuminated when the
cruise control ON-OFF button on the
steering wheel is pushed.
The indicator light turns off when the
cruise control ON-OFF button is pushed
again. For more information about the
use of cruise control, refer to “Cruise
control system or Smart cruise control
system” in section 5.
CAUTION
• Prolonged driving with the Malfunction Indicator Light illumi-nated may cause damage to the emission control systems whichcould effect drivability and/or fuel economy.
•If the Malfunction Indicator Light illuminates, potential catalyticconverter damage is possible.This could result in loss of engine power. Have the Engine ControlSystem inspected as soon as pos- sible by an authorized HYUNDAIdealer.

CRUISE

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Features of your vehicle66
4Press start button againIf there is a problem with the engine
start/stop button system, the warning illu-
minates for 10 seconds to indicate that
you could start the engine by pressing
the engine start/stop button while press-
ing the brake pedal.
If the warning illuminates each time you
push the engine start/stop button, take
your vehicle to an authorized HYUNDAI
dealer and have the system checked.
Shift to "P" or "N" to start engineIf you try to start the engine with the shift
lever not in P(Park) or N(Neutral), the
warning illuminates for 10 seconds on
the LCD screen.
You can also start the engine with the
shift lever in N(Neutral), but for your safe-
ty start the engine with the shift lever in
P(Park).
Low tire pressureWhen one or more of your tires is signifi-
cantly underinflated, the warning light
comes on.

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Features of your vehicle74
4Windshield washers In the OFF position, pull the lever gently
toward you to spray washer fluid on the
windshield and to run the wipers 1-3
cycles.
Use this function when the windshield is
dirty.
The spray and wiper operation will con-
tinue until you release the lever.
If the washer does not work, check the
washer fluid level. If the fluid level is not
sufficient, you will need to add appropri-
ate non-abrasive windshield washer fluid
to the washer reservoir.
The reservoir filler neck is located in the
front of the engine compartment on the
passenger side.
CAUTION
To prevent possible damage to the
washer pump, do not operate thewasher when the fluid reservoir isempty.
WARNING
Do not use the washer in freezing
temperatures without first warming
the windshield with the defrosters;
the washer solution could freeze on
contact with the windshield and
obscure your vision.
CAUTION
• To prevent possible damage to the wipers or windshield, do notoperate the wipers when thewindshield is dry.
• To prevent damage to the wiper blades, do not use gasoline,kerosene, paint thinner, or othersolvents on or near them.
• To prevent damage to the wiper arms and other components, donot attempt to move the wipersmanually.

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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.

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