2011 Hyundai Sonata Hybrid check engine light

H6
Starting the engine
1. Carry the smart key or leave it inside
the vehicle.
2. Make sure the parking brake is firmly
applied.
3. Place the shift lever in the P(Park)
position. In N(Neutral) position, you
can not start the vehicle.
4. Depress the brake pedal.
5. Press the engine start/stop button.
6. In extremely cold weather or after the
vehicle has not been operated for sev-
eral days, let the engine warm up with-
out depressing the accelerator.
Whether the engine is cold or warm, it
should be started without depressing
the accelerator.

if it is far away from you, the engine
may not start.

in the ACC or ON position, if any door
is open, the system checks for the
smart key. If the smart key is not in
the vehicle, the warning, "Key is not
in vehicle" will come on, and if all
doors are closed, the chime will also
sound for about 5 seconds. The indi-
cator will turn off while the vehicle is
moving. Keep the smart key in the
vehicle when using the ACC position
or if the vehicle engine is on.IF the starting procedure is followed,
the "READY" symbol on the instru-
ment cluster will turn on. For more
details, Please check chapter 5.
ECONOMICAL and SAFE OPERA-
TION of Hybrid system
Drive smoothly. Accelerate at a mod-
erate rate and maintain a steady cruis-
ing speed. Don't make "jack-rabbit"
starts. Don't race between stoplights.
Avoid heavy traffic whenever possible.
Always maintain a safe distance from
other vehicles so you can avoid unnec-
essary braking. This also reduces
brake wear.
The regenerative brake generates
energy when the vehicle decelerates.
When the hybrid battery power is low,
the hybrid system automatically
recharges the hybrid battery.
When the engine runs in "N" position,
the hybrid system can not generate
electricity. The hybrid battery cannot
recharge in "N" position. Please check
chapter 5.
✽ ✽
NOTICE
In the hybrid system, the engine auto-
matically runs and stops. If the hybrid
system operates, the "READY" symbol
is illuminated.
In the following situation, the engine
may operate automatically.
- When the engine is ready to run
- When the hybrid battery is charged
- Depending on the temperature condi-
tion of the hybrid battery
STARTING THE HYBRID VEHICLE (SMART KEY)

Safety features of your vehicle
38 3
Air bag warning light
The purpose of air bag warning light in
your instrument panel is to alert you of a
potential problem with your air bag -
Supplemental Restraint System (SRS).When the engine start/stop button is
turned ON, the indicator light should illu-
minate for approximately 6 seconds, then
go off.
Have the system checked if:
The light does not turn on briefly when
you turn the ignition ON.
The light stays on after illuminating for
approximately 6 seconds.
The light comes on while the vehicle is
in motion.
The light blinks when the engine
start/stop button is in ON position.
WARNING
Extreme Hazard! Do not use a
rearward facing child restraint on
a seat protected by an air bag in
front of it!
Never put a child restraint in the
front passenger’s seat. If the front
passenger air bag inflates, it
would cause serious or fatal
injuries.
When children are seated in the
rear outboard seats of a vehicle
equipped with side air bags, be
sure to install the child restraint
system as far away from the door
side as possible, and securely
lock the child restraint system in
position.
Inflation of side and/or curtain air
bags could cause serious injury
or death to an infant or child.
W7-147

43
Features of your vehicle
SMART KEY
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.Locking
Using the door handle switch
Pressing the button of the front outside
door handles with all doors closed and
any door unlocked, locks all the doors. If
all doors, trunk and engine hood are
closed, the hazard warning lights will
blink and the chime will sound once to
indicate that all doors are locked.
However, if any door remains open, the
doors won't lock and the chime will sound
for 3 seconds. Close the door and try
again to lock the doors.
If the trunk lid or engine hood remains
open, the hazard warning light and chime
won't operate. After the, trunk lid and
engine hood are closed, the hazard
warning lights blink once.The button will only operate when the
smart key is within 28~40in. (0.7~1m)
from the outside door handle.
If you want to make sure that a door has
locked, you should check the door lock
button inside the vehicle or pull the out-
side door handle.
Even though you press the outside door
handle buttons, 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.
Using the button on the smart key
All doors are locked if the lock button(1)
is pressed. If all doors, trunk and hood
are closed, the hazard warning lights will
blink and the chime will sound once to
indicate that all doors are locked.
However, if any door, trunk or engine
hood remains open, the hazard warning
lights and the chime will not operate. If all
doors, trunk and engine hood are closed
after the lock button is pressed, the haz-
ard warning lights blink.
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WARNING
The smart key would enable chil-
dren 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 smart key in your
vehicle with unsupervised children.

47
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.
CAUTION
The smart key is designed to give
you years of trouble-free use,
however it can malfunction if
exposed to moisture or static
electricity. If you are unsure how
to use or replace the battery, con-
tact an authorized HYUNDAI deal-
er.
Using the wrong battery can
cause the smart key to malfunc-
tion. Be sure to use the correct
battery.
To avoid damaging the smart key,
don't drop it, get it wet, or expose
it to heat or sunlight.
An inappropriately disposed bat-
tery can be harmful to the envi-
ronment and human health.
Dispose the battery according to
your local law(s) or regulation.
WARNING
In order to prevent theft of your vehi-
cle, do not leave spare keys any-
where in your vehicle. Your
Immobilizer password is a customer
unique password and should be
kept confidential. Do not leave this
number anywhere in your vehicle.

421
Features of your vehicle
Opening the hood
1. Pull the release lever to unlatch the
hood. The hood should pop open
slightly.2. Go to the front of the vehicle, raise the
hood slightly, pull the secondary latch
(1) inside of the hood center and lift
the hood (2).
3. Raise the hood. It will raise completely
by itself after it has been raised about
halfway.
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. Lower the hood halfway and push
down to securely lock in place.
HOOD
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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 raised. The view will be
blocked and the hood could fall
or be damaged.

Features of your vehicle
22 4
Opening the fuel filler lid
The fuel filler lid must be opened from
inside the vehicle by pushing the fuel
filler lid opener button.
✽ ✽
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, push the fuel
filler lid opener button.
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
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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.

423
Features of your vehicle
(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)

429
Features of your vehicle
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 illumi-
nate.
• The steering effort is high immediately
after turning the engine start/stop but-
ton on. This happens as the system
performs the EPS system diagnostics.
When the diagnostics is completed, the
steering wheel will return to its normal
condition.
• A click noise may be heard from the
EPS relay after the engine start/stop
button is turned to the ON or LOCK
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 warn-
ing light will illuminate on the instru-
ment 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, noise could occur.
If temperature rises, the noise will dis-
appear. This is a normal condition.
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.