2011 Hyundai Sonata check engine

Features of your vehicle
54
4
Seat belt warning
(if equipped)
As a reminder to the driver and front pas-
senger, the seat belt warning light will
blink or illuminate for approximately 6
seconds each time you turn the ignition
switch ON regardless of belt fastening.
For details, refer to the seat belt on chap- ter 3.
Turn signal indicator
The blinking green arrows on the instru-
ment 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 light
This warning light indicates the engine oil
pressure is low.
If the warning light illuminates whilst 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
authorised HYUNDAI dealer.
CAUTION
If the engine is not stopped imme- diately after the engine oil pressure
warning light is illuminated, severedamage could result.

455
Features of your vehicle
Parking brake & brakefluid warning light
Parking 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 whilst the engine is
running. 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 autho-
rised HYUNDAI dealer for a brake sys-
tem inspection and necessary repairs.
Your vehicle is equipped with dual-diago-
nal 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 greaterpedal 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
whilst 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.
CAUTION
If the oil pressure warning light stays on whilst the engine is run-
ning, serious engine damage mayresult. The oil pressure warninglight comes on whenever there is insufficient oil pressure. In normal
operation, 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 whilst the engine isrunning, there is a serious malfunc-tion.
If this happens, stop the car assoon as it is safe to do so, turn off the engine and check the oil level. Ifthe oil level is low, fill the engine oilto the proper level and start the
engine again. If the light stays onwith the engine running, turn theengine off immediately. In any instance where the oil light stays on
when the engine is running, theengine should be checked by an authorised HYUNDAI dealer beforethe car is driven again.

457
Features of your vehicle
Charging system warninglight
This warning light indicates a malfunction
of either the generator or electricalcharging system.
If the warning light comes on whilst the
vehicle is in motion:
1. Drive to the nearest safe location.
2. With the engine off, check the alterna- 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 authorised
HYUNDAI dealer correct the problem
as soon as possible.
Trunk lid open warning
light
This warning light illuminates when a
trunk lid is not closed securely with the
ignition in any position.
Door open position indica-
tor
This indicator illuminates when a door is
not closed securely.
The indicator displays which door isopened.
Immobiliser indicator (if equipped)
Without smart key system This light illuminates when the immobilis-
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
authorised HYUNDAI dealer.
With smart key system (if equipped)
If any of the following occurs in a vehicle
equipped with the smart key, the immo-
biliser indicator illuminates, blinks or the
light goes off.
When the smart key is in the vehicle, if the engine start/stop button is turned
to the ACC or ON position, the indica-
tor will illuminate. However, when the
smart key is not in the vehicle, if the
engine start/stop button is depressed,
the indicator will blink for a few minutes
to indicate that you will not be able to
start the engine.

Features of your vehicle
58
4
When the ignition switch is turned to
the ON position and the indicator turns
off after 2 seconds, the system may
have a problem. Have the vehicle
checked by an authorised 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 have a problem, the indicator
blinks.Low fuel level warning light
This 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 causethe 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 whilst 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
whilst driving, or does not illuminate
when the ignition switch is turned to the
ON position, take your vehicle to your
nearest authorised HYUNDAI dealer and
have the system checked.
Generally, your vehicle will continue to be
drivable, but have the system checked by
an authorised HYUNDAI dealer promptly.

459
Features of your vehicle
Engine coolant tempera-ture warning light (if equipped)
The warning light illuminates if the tem-
perature of the engine coolant is above125±2.5°C (257±4.5°F).
Do not continue driving with an overheat-
ed engine. If your vehicle overheats, refer
to “Overheating” in section 6.
✽✽ NOTICE
If the engine coolant temperature warn-
ing light illuminates, it indicates over-
heating that may damage the engine.
ESP (Electronic Stability Program) indicator (if equipped)
The ESP indicator will illuminate when
the ignition switch is turned ON, but
should go off after approximately 3 sec-
onds. When the ESP is on, it monitors the
driving conditions. Under normal driving
conditions, the ESP indicator will remain
off. When a slippery or low traction con-dition is encountered, the ESP will oper-
ate, and the ESP indicator will blink to
indicate the ESP is operating. But, if the ESP system malfunctions the
indicator illuminates and stays on. Take
your vehicle to an authorised HYUNDAI
dealer and have the system checked.
CAUTION
Prolonged driving with the
Malfunction Indicator Light illumi-
nated may cause damage to theemission control systems whichcould effect drivability and/or fuel economy.
CAUTION
If the Malfunction Indicator Lightilluminates, potential catalytic con-verter damage is possible which could result in loss of engine
power. Have the Engine ControlSystem inspected as soon as pos-sible by an authorised HYUNDAIdealer.

463
Features of your vehicle
Insert key
If you push theengine start/ stop
button whilst the
"Key is not detect-ed" illuminates onthe LCD screen,
the warning illumi-
nates for 10 sec-
onds.
Press start button again
If there is a prob- lem with the
engine start/ stop
button system, the
warning illumi-
nates for 10 sec-onds to indicate
that you could start the engine by press-
ing the engine start/ stop button whilst
pressing the brake pedal.
If the warning illuminates each time you
push the start/stop button, take your
vehicle to an authorised HYUNDAI deal-
er and have the system checked.
Shift to "P" or "N" to start engine
If you try to start the engine with the
shift lever not in
P(Park) or
N(Neutral), the
warning illumi-
nates for 10 sec-
onds 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).

Features of your vehicle
76
4
Windscreen washers
In the OFF position, pull the lever gently
toward you to spray washer fluid on the
windscreen and to run the wipers 1-3
cycles. Use this function when the windscreen 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 windscreen washer
fluid to the washer reservoir.
The reservoir filler neck is located in the
front of the engine compartment on the
driver side.
OYF049101R
CAUTION
To prevent possible damage to the
washer pump, do not operate the
washer when the fluid reservoir isempty.
WARNING
Do not use the washer in freezing
temperatures without first warming
the windscreen with the defrosters;
the washer solution could freeze oncontact with the windscreen and
obscure your vision.
CAUTION
To prevent possible damage to the wipers or windscreen, do notoperate the wipers when the
windscreen is dry.
To prevent damage to the wiper blades, do not use petrol,
kerosene, paint thinner, or othersolvents on or near them.
To prevent damage to the wiper arms and other components, do
not attempt to move the wipersmanually.

Driving your vehicle
2
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 colourless, odourless gas that can cause unconsciousness and death by asphyx- iation.
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 authorised HYUNDAI dealer.
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.
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 windscre en
are kept clear of snow, ice, leaves or other obstructions.