2012 Hyundai Elantra check engine light

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 within 30 seconds.

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 “clicks” 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.
(Continued)(Continued)
• When the vehicle is stationary, if you
turn the steering wheel all the way to
the left or right continuously, the
steering wheel becomes heavier from
the end. But this is for your safety, not
system malfunction. As time passes,
the steering wheel return to its normal
condition.
• 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.
• When the charging system warning
light comes on or the voltage is low
(When the alternator (or battery) does
not operate normally or it malfunc-
tions), the steering wheel may get
heavy and become difficult to control
operate abnormally.
STEERING WHEEL

Features of your vehicle
50 4
Warnings and indicators
All warning lights are checked by turning
the ignition switch ON (do not start the
engine). Any light that does not illuminate
should be checked by an authorized
HYUNDAI dealer.
After starting the engine, check to make
sure that all warning lights are off. If any
are still on, this indicates a situation that
needs attention. When releasing the
parking brake, the brake system warning
light should go off. The fuel warning light
will stay on if the fuel level is low.
ECO indicator
(if equipped)
Active ECO system (if equipped)
When the active ECO is operating the
ECO indicator is green.
For more detailed information, refer to
“Active ECO” in chapter 5.
Air bag warning light
This warning light will illuminate for
approximately 6 seconds each time you
turn the ignition switch to the ON posi-
tion.
This light also comes on when the
Supplemental Restraint System (SRS) is
not working properly. If the SRS air bag
warning light does not come on, or
continuously remains on after operating
for about 6 seconds when you turned the
ignition switch to the ON position or start-
ed the engine, or if it comes on while
driving, have the SRS inspected by an
authorized HYUNDAI dealer.
Anti-lock brake system
(ABS) warning light
This light illuminates if the ignition switch
is turned ON and goes off in approxi-
mately 3 seconds if the system is operat-
ing normally.
If the ABS warning light remains on,
comes on while driving, or does not
come on when the ignition switch is
turned to the ON position, this indicates
that there may be a malfunction with the
ABS.
If this occurs, have your vehicle checked
by an authorized HYUNDAI dealer as
soon as possible. The normal braking
system will still be operational, but with-
out the assistance of the anti-lock brake
system.
ECO

451
Features of your vehicle
If the ABS warning light turns on while
driving
1. Park the vehicle in a safe place and
turn off the engine.
2. Turn on the engine again.
3. If the warning light illuminates and
turns off in approximately 3 seconds,
the system is operating normally.
If the warning light does not turn off, have
your vehicle checked by an authorized
HYUNDAI dealer as soon as possible.Electronic brake force distri-
bution (EBD) system warning
light
If these two warning lights illuminate at
the same time while driving, your vehicle
may have a malfunction with the ABS
and EBD system.
In this case, your ABS and regular brake
system may not work normally. Have the
vehicle checked by an authorized
HYUNDAI dealer as soon as possible.✽ ✽
NOTICE
If the ABS warning light or EBD warn-
ing light is on and stays on, the
speedometer or odometer/tripmeter
may not work. In this case, have your
vehicle checked by an authorized
HYUNDAI dealer as soon as possible.
WARNING
If the both ABS and brake warning
lights are on and stay on, your vehi-
cle’s brake system will not work
normally during sudden braking. In
this case, avoid high speed driving
and abrupt braking. Have your vehi-
cle checked by an authorized
HYUNDAI dealer as soon as possi-
ble.

453
Features of your vehicle
Engine oil pressure
warning light
This 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.
Parking brake & brake fluid
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.
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.
CAUTION
If the engine is not stopped imme-
diately after the engine oil pressure
warning light is illuminated, severe
damage could result.
CAUTION
If the oil pressure warning light
stays on while the engine is run-
ning, 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 an
authorized HYUNDAI dealer before
the car is driven again.