2011 Hyundai Sonata Hybrid check engine

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.

441
Features of your vehicle
Instrument panel illumination
Press the illumination control switch left
or right to adjust the brightness of the
instrument panel illumination.
The illumination intensity will show on the
LCD screen.
READY indicator
This light illuminates if it is possible to
drive your vehicle when the engine
start/stop button is turned to the START
position. If the vehicle fail to start, this
light doesn’t come on. Also, if this light is
blinking while driving, it indicates a fault
to enter into a limited operating mode. If
this light goes off while driving, it indi-
cates a fault that will cause the vehicle to
shut down. If these occur, have your vehi-
cle checked by an authorized HYUNDAI
dealer.
Gauges
Odometer (mi. or km)
The odometer indicates the total dis-
tance the vehicle has been driven.
You will also find the odometer useful to
determine when periodic maintenance
should be performed.
The odometer is always displayed until
the display is turned off.
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453
Features of your vehicle
Warnings and indicators
All warning lights are checked by turning
the engine start/stop button ON (do not
start the engine). Any light that does not
illuminate should be checked by an
authorized HYUNDAI dealer.
After starting the Hybrid system, check to
make sure that all warning lights are off.
If any are still on, this indicates a situa-
tion 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.
EV mode
This light illuminates if the vehicle only is
moved by the electric motor.
Service indicator
This indicator comes on when any mal-
function occurs in the hybrid system. If
this occurs, have your vehicle checked by
an authorized HYUNDAI dealer.
Air bag warning light
This warning light will illuminate for
approximately 6 seconds each time you
turn the engine start/stop button to the
ON position.
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
engine start/stop button to the ON posi-
tion or started the engine, or if it comes
on while driving, have the SRS inspected
by an authorized HYUNDAI dealer.

Features of your vehicle
54 4
Anti-lock brake system
(ABS) warning light
This light illuminates if the engine
start/stop button is turned ON and goes
off in approximately 3 seconds if the sys-
tem is operating normally.
If the ABS warning light remains on,
comes on while driving, or does not come
on when the engine start/stop button 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 without
the assistance of the anti-lock brake sys-
tem.
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.
Seat belt warning
The driver's seat belt warning light and
chime will activate to the following table
when the engine start/stop button is in
"ON" position.
*
1Warning pattern repeats 11 times with
interval 24 seconds. If the driver's seat
belt is buckled, the light will stop within 6
seconds and chime will stop immediate-
ly.
*
2The light will stop within 6 seconds and
chime will stop immediately.
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.
ConditionsWarning Pattern
Seat BeltVehicle
SpeedLight-BlinkChime-
Sound
Unbuckled6 seconds
Buckled6 secondsNone
Buckled →
Unbuckled
Below 3 mph
(5 km/h)6 secondsNone
3 mph~
6 mph6 seconds
Above 6 mph
(10 km/h)6 sec. on / 24 sec. off
(11 times)
Unbuckled
Above 6 mph
(10 km/h)
↓
Below 3 mph
(5 km/h)6 seconds *1
↓
Stop *2

455
Features of your vehicle
Turn signal indicator
The blinking arrows on the instrument
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 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.
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 engine start/stop button 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
malfunction.
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.

Features of your vehicle
56 4
WARNING
Driving the vehicle with a warning
light on is dangerous. If the brake
warning light remains on, have the
brakes checked and repaired imme-
diately by an authorized HYUNDAI
dealer.
Brake system &
Parking brake &
Brake fluid warning light
The brake warning light turned on when
the regenerative brake system is not
operated with brake system malfunction.
Have the system checked by an author-
ized HYUNDAI dealer as soon as possi-
ble.
When the brake function is not well or the
regenerative brake system is not operat-
ed with brake system malfunction, the
brake warning light turned on and 'check
brake' is displayed on the LCD. Have the
system checked by an authorized
HYUNDAI dealer as soon as possible.
Parking brake warning
This light illuminated when the parking
brake is applied with engine start/stop
button 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.
Your vehicle is equipped with a dual-
diagonal braking system. This means you
still have braking on two wheels even if
one of the brake circuits is damaged or
malfunctions. With only one of the circuits
working, more than normal pedal travel
and greater pedal 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 while 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.To check bulb operation, check whether
the parking brake and brake fluid warning
light illuminates when the engine
start/stop button is in the ON position.
CAUTION
When the brake function is not well
and the regenerative brake system is
not operated with brake system mal-
function, the brake warning light
turned on with 'check brake' is dis-
played on the LCD and warning
chime will sound. In this condition
you can stop your vehicle by apply-
ing greater force to the brake pedal
than normal and the stopping dis-
tance will be longer. Have the system
checked by an authorized HYUNDAI
dealer as soon as possible.