2011 Hyundai Sonata check engine

Features of your vehicle
4
4
Immobiliser system (if equipped)
Your vehicle may be equipped with an electronic engine immobiliser system to
reduce the risk of unauthorised vehicle
use.
Your immobiliser system is comprised of
a small transponder in the ignition key
and electronic devices inside the vehicle.
With the immobiliser 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 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 activate the immobiliser system:
Turn the ignition key to the OFF position.
The immobiliser system activates auto-
matically. Without a valid ignition key for
your vehicle, the engine will not start.
To deactivate the immobiliser 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 immobiliser 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 authorised HYUNDAI
dealer.
WARNING
In order to prevent theft of your
vehicle, do not leave spare keys
anywhere in your vehicle.
CAUTION
The transponder in your ignition key is an important part of the immobiliser system. It is designedto give years of trouble-free service,
however you should avoid expo-sure to moisture, static electricityand rough handling. Immobiliser system malfunction could occur.
CAUTION
Do not put metal accessories nearthe ignition switch.
The engine may not start as themetal accessories may interrupt thetransponder signal from transmit-ting normally.

Features of your vehicle
6
4
With a smart key, you can lock or unlock
a door (and trunk) and even start the
engine without inserting the key.
The functions of buttons on a smart key
are similar to the remote keyless entry.
(Refer to the “Remote keyless entry” inthis section.)
Smart key functions
With the smart key, you can lock and
unlock the vehicle doors (and trunk), and
the smart key enables starting of the
engine as well. Detailed information fol-
lows:
Locking
Using the door handle switch
Pressing the button of the front outside door handles with all doors closed and
any door unlock, locks all the doors. If all
doors, trunk and engine bonnet are
closed, the hazard warning lights will
blink 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 trunk lid or engine bonnet remains
open, the hazard warning light won't
operate. After this, trunk lid and engine
bonnet are closed, the hazard warning
lights blink once.
The button will only operate when the
smart key is within 0.7~1 m (28~40 in.)
from the outside door handle. If you want
to make sure that a door has locked or
not, you should check the door lock but-
ton inside the vehicle or pull the outside
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 ignition switch is in ACC or ON
position.
Any door except the trunk is open.
SMART KEY (IF EQUIPPED)
OYF049302N
OYF049302N
OYF049003/H

Features of your vehicle
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4
Opening the bonnet
1. Pull the release lever to unlatch the
bonnet. The bonnet should pop open
slightly. 2. Go to the front of the vehicle, raise the
bonnet slightly, pull the secondarylatch (1) inside of the bonnet centreand lift the bonnet (2).
3. Raise the bonnet. It will raise com- pletely by itself after it has been raised
about halfway. Closing the bonnet
1. Before closing the bonnet, check the
following:
must be correctly installed.
bustible material must be removed
from the engine compartment.
2. Lower the bonnet halfway and push down to securely lock in place.
BONNET
OYF049018ROYF049019NWARNING
Before closing the bonnet, ensure that all obstructions are
removed from the bonnet open-
ing. Closing the bonnet with anobstruction present in the bonnet
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.

Features of your vehicle
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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”. This indicates that the cap is securely tightened.
2. Close the fuel filler lid and push it light- ly and make sure that it is securelyclosed.
FUEL FILLER LID
OYF049020ROYF049021
WARNING
- Refuelling
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 whenrefuelling.
Always check that the fuel cap is installed securely to prevent fuel
spillage in the event of an acci-dent.

429
Features of your vehicle
(Continued)
Do not get back into a vehicleonce you have begun refuelling
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 vapours 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 petrol
source.
When using an approved portable fuel container, be sure toplace the container on the
ground prior to refuelling. Static
electricity discharge from the
container can ignite fuel vapours
causing a fire. Once refuelling
has begun, contact with the vehi-
cle should be maintained until
the filling is complete.
(Continued)WARNING - Refuelling
dangers
Automotive fuels are flammable
materials. When refuelling, 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 at the petrol station facility.
Before refuelling note the loca- tion of the Emergency Petrol
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)(Continued)Use only approved portable plas-
tic fuel containers designed to
carry and store petrol.
Do not use mobile phones whilst refuelling. Electric current and/or
electronic interference from
mobile phones can potentially
ignite fuel vapours causing a fire.
When refuelling, always shut the engine off. Sparks produced byelectrical components related tothe engine can ignite fuel
vapours causing a fire. Once
refuelling is complete, check tomake 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 whilst at
a petrol station especially during
refuelling. Automotive fuel is
highly flammable and can, when
ignited, result in fire.
(Continued)

437
Features of your vehicle
Power steering
Power steering uses energy from the
engine to assist you in steering the vehi-
cle. If the engine is off or if the power
steering system becomes inoperative,
the vehicle may still be steered, but it will
require increased steering effort.
Should you notice any change in the
effort required to steer during normal
vehicle operation, have the power steer-
ing checked by an authorised HYUNDAI
dealer.✽✽NOTICE
If the power steering drive belt breaks
or if the power steering pump malfunc-
tions, the steering effort will greatly
increase.
✽
✽ NOTICE
If the vehicle is parked for extended
periods outside in cold weather (below
-10°C/14°F), the power steering may
require increased effort when the engine
is first started. This is caused by
increased fluid viscosity due to the cold
weather and does not indicate a mal-
function.
When this happens, increase the engine
RPM by depressing accelerator until the
RPM reaches 1,500 rpm then release or
let the engine idle for two or three min-
utes to warm up the fluid.
Tilt steering
Tilt steering allows you to adjust the
steering wheel before you drive. You can
also raise it to give your legs more room
when you exit and enter the vehicle.
The steering wheel should be positioned
so that it is comfortable for you to drive,
whilst permitting you to see the instru-
ment panel warning lights and gauges.
STEERING WHEEL
CAUTION
Never hold the steering wheel
against a stop (extreme right or left
turn) for more than 5 seconds withthe engine running. Holding thesteering wheel for more than 5 sec-onds in either position may cause
damage to the power steeringpump.
WARNING
Never adjust the angle of the steering wheel whilst driving. You
may lose steering control and
cause severe personal injury,death or accidents.
After adjusting, push the steering wheel both up and down to be
certain it is locked in position.

Features of your vehicle
52
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 authorised
HYUNDAI dealer.
After starting the engine, check to make
sure that all warning lights are off. If anyare 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)
The ECO indicator is a system that
informs you to drive economically.
It is displayed if you drive fuel efficiently
to help you improve fuel efficiency.
The ECO indicator (green) will turn on when you are driving fuel efficiently in
the ECO ON mode.
If you don't want the indicator dis-
played, you can turn the ECO ON
mode to OFF mode by pressing the
RESET button.
As per ECO ON/OFF Mode operation,
refer to the previous page.
The fuel-efficiency can be changed by the driver's driving habit and road con-dition.
It doesn't work at the condition which doesn't meet economical driving such
as P (Park), N (Neutral), R (Reverse)
or sports mode.
Whilst the instant fuel consumption mode is displayed on the LCD screen,
the ECO indicator turns off.
ECOWARNING
Don't keep watching the indicator
whilst driving. It will distract youwhilst driving and cause an acci-
dent that results in severe personal
injury.

453
Features of your vehicle
Air bag warning light(if equipped)
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 whilst
driving, have the SRS inspected by an
authorised HYUNDAI dealer.
Anti-lock brake system
(ABS) warning light (if equipped)
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 whilst 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 authorised HYUNDAI dealer as
soon as possible. The normal braking
system will still be operational, but with-
out the assistance of the anti-lock brakesystem. Electronic brake
force distribution
(EBD) system
warning light
If two warning lights illuminate at the
same time whilst driving, your vehicle
may have a malfunction with the ABSand EBD system.
In this case, your ABS and regular brake
system may not work normally. Have the
vehicle checked by an authorised
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 authorised
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 authorised
HYUNDAI dealer as soon as possi-
ble.