2011 Hyundai Elantra check engine

Features of your vehicle
4 4
Immobilizer system (if equipped)
Your vehicle is equipped with an elec-
tronic engine immobilizer system to
reduce the risk of unauthorized vehicle
use.
Your immobilizer system is comprised of
a small transponder in the ignition key
and electronic devices inside the vehicle.
With the immobilizer system, whenever
you insert your ignition key into the igni-
tion switch and turn it to ON, it checks
and determines and verifies if the ignition
key is valid.
If the key is determined to be valid, the
engine will start.
If the key is determined to be invalid, the
engine will not start.
To activate the immobilizer system:
Turn the ignition key to the OFF position.
The immobilizer system activates auto-
matically. Without a valid ignition key for
your vehicle, the engine will not start.
To deactivate the immobilizer sys-
tem:
Insert the ignition key into the key cylin-
der and turn it to the ON position.
✽ ✽
NOTICE
When starting the engine, do not use the
key with other immobilizer keys around.
Otherwise the engine may not start or
may stop soon after it starts. Keep each
key separate in order to avoid a starting
malfunction.
✽ ✽
NOTICE
If you need additional keys or lose your
keys, consult an authorized HYUNDAI
dealer.
CAUTION
The transponder in your ignition
key is an important part of the
immobilizer system. It is designed
to give years of trouble-free service,
however you should avoid expo-
sure to moisture, static electricity
and rough handling. Immobilizer
system malfunction could occur.
WARNING
In order to prevent theft of your
vehicle, do not leave spare keys
anywhere in your vehicle. Your
Immobilizer password is a cus-
tomer unique password and should
be kept confidential. Do not leave
this number anywhere in your vehi-
cle.
CAUTION
Do not change, alter or adjust the
immobilizer system because it
could cause the immobilizer sys-
tem to malfunction and should only
be serviced by an authorized
HYUNDAI dealer.
Malfunctions caused by improper
alterations, adjustments or modifi-
cations to the immobilizer system
are not covered by your vehicle
manufacturer warranty.
CAUTION
Do not put metal accessories near
the ignition switch.
Metal accessories may interrupt the
transponder signal and may pre-
vent the engine from being started.

Features of your vehicle
6 4
Smart key function
1. Door lock
2. Door unlock
3. Trunk unlock
4. Panic
With a smart key, you can lock or unlock
a door (and trunk) and even start the
engine without inserting the key.
Refer to the following for more details.
Locking
Using the door handle button
1. Close all doors, engine hood and
trunk.
2. Press the button of the outside door
handle.
3. The hazard warning lights will blink
and the chime will sound once.
4. Make sure that doors are locked by
checking the door lock button inside
the vehicle or pulling the outside door
handle.
✽ ✽
NOTICE
• The button will only operate when the
smart key is within 28~40in. (0.7~1m)
from the outside door handle.
• Even though you press the outside
door handle button, the doors will not
lock and the chime will sound for 3
seconds if any of following occur:
- The smart key is in the vehicle.
- The engine start/stop button is in
ACC or ON position.
- Any door except the trunk is open.
SMART KEY (IF EQUIPPED)
OYF049213OMD040008
WARNING- Smart key
Leaving children unattended in a
vehicle with the smart key is dan-
gerous. Children copy adults and
they could press the engine
start/stop button. It would enable
children to operate power windows
or other controls, or even make the
vehicle move, which could result in
serious bodily injury or even death.
Never leave the keys in your vehicle
with unsupervised children.

47
Features of your vehicle
Using the button on the smart key
1 Close all doors, engine hood and
trunk.
2. Press the lock button(1).
3. The hazard warning lights will blink
and the chime will sound once.
4. Make sure that doors are locked by
checking the door lock button inside or
pulling the outside door handle.Unlocking
Using the door handle
1. Press the button of the driver's outside
door handle.
2. The driver’s door will unlock. The haz-
ard warning lights will blink and the
chime will sound two times.
3. Press the button once more with in 4
seconds.
4. All doors will unlock and the hazard
warning lights will blink and the chime
will sound two times.
❈If you press the button of the front pas-
senger’s outside door handle while
carrying the smart key, all doors will
unlock.
✽ ✽
NOTICE
• The button will only operate when the
smart key is within 28~40in. (0.7~1m)
from the outside door handle.
• When the smart key is recognized in
the area of 28~40in. (0.7~1m) from the
front outside door handle, other peo-
ple can also open the doors.
• After unlocking the driver’s door or
all doors, the door(s) will lock auto-
matically unless the door is opened.
Using the button on the smart key
1. Press the unlock button (2) of the
smart key.
2. The driver’s door will unlock. The haz-
ard warning lights will blink and the
chime will sound two times.
3. Press the unlock button (2) once more
within 4 seconds.
4. All doors will unlock. The hazard warn-
ing lights will blink and the chime will
sound two times.
✽ ✽
NOTICE
After pressing the button, the doors will
lock automatically unless any door is
opened.

49
Features of your vehicle
Immobilizer system
Your vehicle is equipped with an electron-
ic engine immobilizer system to reduce
the risk of unauthorized vehicle use.
Your immobilizer system is comprised of
a small transponder in the smart key and
electronic devices inside the vehicle.
With the immobilizer system, whenever
you turn the engine start/stop button to
the ON position by pressing the button
while carrying the smart key, it checks
and determines and verifies if the smart
key is valid or not.
If the key is determined to be valid, the
engine will start.
If the key is determined to be invalid, the
engine will not start.
To deactivate the immobilizer sys-
tem:
Turn the engine start/stop button to the
ON position by pressing the button while
carrying the smart key.
To activate the immobilizer system:
Turn the engine start/stop button to the
OFF position. The immobilizer system
activates automatically. Without a valid
smart key for your vehicle, the engine will
not start.
✽ ✽
NOTICE
When starting the engine, do not use the
key with other immobilizer keys around.
Otherwise the engine may not start or
may stop soon after it starts. Keep each
key separate in order to avoid a starting
malfunction.
✽ ✽
NOTICE
If you need additional keys or lose your
keys, consult an authorized HYUNDAI
dealer.
CAUTION
Do not put metal accessories near
the smart key.
The engine may not start because
the metal accessories may interrupt
the transponder signal from trans-
mitting normally.
WARNING
In order to prevent theft of your
vehicle, do not leave spare keys
anywhere in your vehicle. Your
Immobilizer password is a cus-
tomer unique password and should
be kept confidential. Do not leave
this number anywhere in your vehi-
cle.

Features of your vehicle
30 4
Closing the hood
1. Before closing the hood, check the fol-
lowing:

must be correctly installed.

bustible material must be removed
from the engine compartment.
2. Return the support rod to its clip to
prevent it from rattling.
3. Lower the hood until it is about 1 ft. (30
cm) above the closed position and let
it drop. Make sure that it locks into
place.WARNING
Before closing the hood, ensure
that all obstructions are removed
from the hood opening. Closing
the hood with an obstruction
present in the hood opening may
result in property damage or
severe personal injury.
Do not leave gloves, rags or any
other combustible material in the
engine compartment. Doing so
may cause a heat-induced fire.
Always double check to be sure
that the hood is firmly latched
before driving away. If it is not
latched, the hood could open
while the vehicle is being driven,
causing a total loss of visibility,
which might result in an accident.
Do not move the vehicle with the
hood in the raised position, as
vision is obstructed and the hood
could fall or be damaged.

431
Features of your vehicle
Opening the fuel filler lid
The fuel filler lid must be opened from
inside the vehicle by pulling the fuel filler
lid opener switch.
✽ ✽
NOTICE
If the fuel filler lid will not open because
ice has formed around it, tap lightly or
push on the lid to break the ice and
release the lid. Do not pry on the lid. If
necessary, spray around the lid with an
approved de-icer fluid (do not use radi-
ator anti-freeze) or move the vehicle to a
warm place and allow the ice to melt.
1. Stop the engine.
2. To open the fuel filler lid, pull the fuel
filler lid opener switch.
3. Pull the fuel filler lid (1) out to fully
open.
4. To remove the cap, turn the fuel tank
cap (2) counterclockwise.
5. Refuel as needed.
Closing the fuel filler lid
1. To install the cap, turn it clockwise until
it “click” one time. This indicates that
the cap is securely tightened.
2. Close the fuel filler lid and push it in
lightly making sure that it is securely
closed.
FUEL FILLER LID
OMD040024OMD040025
WARNING - Refueling
If pressurized fuel sprays out, it
can cover your clothes or skin
and thus subject you to the risk
of fire and burns. Always remove
the fuel cap carefully and slowly.
If the cap is venting fuel or if you
hear a hissing sound, wait until
the condition stops before com-
pletely removing the cap.
Do not "top off" after the nozzle
automatically shuts off when
refueling.
Tighten the cap until it clicks one
time, otherwise the Malfunction
Indicator Light will illuminate.
Always check that the fuel cap is
installed securely to prevent fuel
spillage in the event of an acci-
dent.

Features of your vehicle
32 4
(Continued)
Use only approved portable plas-
tic fuel containers designed to
carry and store gasoline.
Do not use cellular phones while
refueling. Electric current and/or
electronic interference from cel-
lular phones can potentially
ignite fuel vapors causing a fire.
When refueling, always shut the
engine off. Sparks produced by
electrical components related to
the engine can ignite fuel vapors
causing a fire. Once refueling is
complete, check to make sure the
filler cap and filler door are
securely closed, before starting
the engine.
DO NOT use matches or a lighter
and DO NOT SMOKE or leave a lit
cigarette in your vehicle while at
a gas station especially during
refueling. Automotive fuel is
highly flammable and can, when
ignited, result in fire.
(Continued)(Continued)
Do not get back into a vehicle
once you have begun refueling
since you can generate static
electricity by touching, rubbing
or sliding against any item or fab-
ric (polyester, satin, nylon, etc.)
capable of producing static elec-
tricity. Static electricity discharge
can ignite fuel vapors resulting in
rapid burning. If you must re-
enter the vehicle, you should
once again eliminate potentially
dangerous static electricity dis-
charge by touching a metal part
of the vehicle, away from the fuel
filler neck, nozzle or other gaso-
line source.
When using an approved
portable fuel container, be sure to
place the container on the
ground prior to refueling. Static
electricity discharge from the
container can ignite fuel vapors
causing a fire. Once refueling has
begun, contact with the vehicle
should be maintained until the
filling is complete.
(Continued)WARNING - Refueling dan-
gers
Automotive fuels are flammable
materials. When refueling, please
note the following guidelines care-
fully. Failure to follow these guide-
lines may result in severe personal
injury, severe burns or death by fire
or explosion.
Read and follow all warnings
posted at the gas station facility.
Before refueling, note the loca-
tion of the Emergency Gasoline
Shut-Off, if available, at the gas
station facility.
Before touching the fuel nozzle,
you should eliminate potentially
dangerous static electricity dis-
charge by touching another metal
part of the vehicle, a safe dis-
tance away from the fuel filler
neck, nozzle, or other gas source.
(Continued)

Features of your vehicle
38 4
Electric power steering (EPS)
The power steering uses a motor to
assist you in steering the vehicle. If the
engine is off or if the power steering sys-
tem becomes inoperative, the vehicle
may still be steered, but it will require
increased steering effort.
The motor driven power steering is con-
trolled by a power steering control unit
which senses the steering wheel torque
and vehicle speed to command the
motor.
The steering becomes heavier as the
vehicle’s speed increases and becomes
lighter as the vehicle’s speed decreases
for optimum steering control.
Should you notice any change in the
effort required to steer during normal
vehicle operation, have the power steer-
ing checked by an authorized HYUNDAI
dealer.
✽ ✽
NOTICE
The following symptoms may occur dur-
ing normal vehicle operation:
• The EPS warning light does not illu-
minate.
• The steering gets heavy immediately
after turning the ignition switch on.
This happens as the system performs
the EPS system diagnostics. When the
diagnostics is completed, the steering
wheel will return to its normal condi-
tion.
• A click noise may be heard from the
EPS relay after the ignition switch is
turned to the ON or LOCK (OFF)
position.
• A motor noise may be heard when the
vehicle is at a stop or at a low driving
speed.
• If the Electric Power Steering System
does not operate normally, the warning
light will illuminate on the instrument
cluster. The steering wheel may
become difficult to control or operate
abnormally. Take your vehicle to an
authorized HYUNDAI dealer and have
the vehicle checked as soon as possible.
• When you operate the steering wheel in
low temperature, abnormal noise could
occur. If temperature rises, the noise will
disappear. This is a normal condition.
(Continued)
STEERING WHEEL
CAUTION
If the Electric Power Steering
System does not operate normal-
ly, the warning light will illuminate
on the instrument cluster. The
steering wheel may become diffi-
cult to control or operate abnor-
mally. Take your vehicle to an
authorized HYUNDAI dealer and
have the vehicle checked as soon
as possible.
When you operate the steering
wheel in low temperature, abnor-
mal noise could occur. If tempera-
ture rises, the noise will disap-
pear. This is a normal condition.
When the vehicle is stationary, if
you turn the steering wheel all the
way to the left or right continu-
ously, the steering wheel
becomes heavier from the end.
But this is for your safety, not sys-
tem malfunction. As time passes,
the steering wheel return to its
normal condition.