2010 Hyundai Sonata check engine

1FEATURES OF YOUR HYUNDAI88
B560B01L-GATManual Fuel Filler Lid ReleaseIf the fuel filler lid cannot be opened using
the remote opener, a manual opener
handle is located inside the trunk on the left
side. Open the fuel filler lid by pulling on
this handle as shown in the illustration.
ONF048021
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WARNING:
- When using a portable fuel container,
be sure to place the container on the
ground while refueling. Static elec-
tricity discharge from the container
can ignite fuel vapors causing a fire.
While starting refueling, contact
should be maintained until the filling
is complete.
- Do not use cellular phones around a
gas station. The electric current or
electronic interference from cellular
phones can ignite fuel vapors caus-
ing a fire.
- When refueling, always turn the en-
gine off. Sparks by engine compart-
ment electrical equipment can ignite
fuel vapors causing a fire. After re-
fueling, check to make sure the fuel
filler cap is securely closed, and
then start the engine.
- Do not smoke or try to light cigarettes
around a gas station. Automotive
fuels are flammable.
o After refueling, make sure the fuel
cap is installed securely to prevent
fuel spillage in the event of an acci-
dent
o Tighten the cap until it clicks, otherwise
the "
" check engine light will illu-
minate
o If you open the fuel filler cap during
high ambient temperatures, a slight
"pressure sound" may be heard. This
is normal and not a cause for concern.
Whenever you open the fuel filler cap,
turn it slowly.
o Do not "top off" after the nozzle auto-
matically shuts off when refueling.
o Automotive fuels are flammable/ex-
plosive materials. When refueling,
please note the following guidelines
carefully.
- Before touching the fuel nozzle or
fuel filler cap, have one's hands in
contact with metal parts away from
the filler neck to discharge static
electricity.
- Do not get back in the vehicle while
refueling. Do not operate anything
that can produce static electricity.
Static electricity discharge can ignite
fuel vapors resulting in an explo-
sion.
!
WARNING:

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DRIVING YOUR HYUNDAI
2
WARNING: ENGINE EXHAUST CAN BE DANGEROUS!
C010A03A-AATEngine exhaust fumes can be extremely dangerous. If, at any time, you smell exhaust fumes inside the vehicle, open the
windows immediately.
o Do not inhale exhaust fumes.
Exhaust fumes contain carbon monoxide, a colorless, odorless gas that can cause unconsciousness and death by
asphyxiation.
o Be sure the exhaust system does not leak.
The exhaust system should be checked whenever the vehicle is raised to change the oil or for any other purpose. If you
hear a change in the sound of the exhaust or if you drive over something that strikes the underneath side of the car, have
the exhaust system checked as soon as possible by your Hyundai dealer.
o Do not run the engine in an enclosed area.
Letting the engine idle in your garage, even with the garage door open, is a hazardous practice. Never run the engine
in your garage any longer than it takes to start the engine and back the car out.
o Avoid idling the engine for prolonged periods with people inside the car.
If it is necessary to idle the engine for a prolonged period with people inside the car, be sure to do so only in an open area
with the air intake set at "Fresh" and fan operating at one of the higher speeds so fresh air is drawn into the interior.
If you must drive with the trunk lid open because you are carrying objects that make this necessary:
1. Close all windows.
2. Open side vents.
3. Set the air intake control at "Fresh", the air flow control at "Floor" or "Face" and the fan at one of the higher speeds.
To assure proper operation of the ventilation system, be sure the ventilation air intakes located just in front of the windshield
are kept clear of snow, ice, leaves or other obstructions.
!!
PROPOSITION 65 WARNING:
Engine exhaust and a wide variety of automobile components and parts, including components found in the interior
furnishings in a vehicle, contain or emit chemicals known to the State of California to cause cancer and birth defects
and reproductive harm. In addition, certain fluids contained in vehicles and certain products of component wear contain
or emit chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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DRIVING YOUR HYUNDAI
3
!
BEFORE STARTING
THE ENGINEC020A01NF-AATBefore you start the engine, you should
always:
1. Look around the vehicle to be sure
there are no flat tires, puddles of oil,
water or other indications of possible
trouble.
2. After entering the car, check to be sure
the parking brake is engaged.
3. Check that all windows and lights are
clean.
4. Check that the interior and exterior
mirrors are clean and in position.
5. Check your seat, seatback and head-
rest to be sure they are in their proper
positions.
6. Lock all the doors.
7. Fasten your seat belt and be sure that all
other occupants have fastened theirs.
8. Turn off all lights and accessories that
are not needed.
9. When you turn the ignition switch to
"ON", check that all appropriate warning
lights are operating and that you have
sufficient fuel.
10. Check the operation of warning lights
and all bulbs when key is in the "ON"
position.
TO START THE ENGINEC030A01E-AATCOMBINATION IGNITION SWITCHo If your Hyundai is equipped with a
manual transaxle, place the shift lever
in neutral and depress the clutch pedal
fully.
o If your Hyundai has an automatic
transaxle, place the shift lever in "P"
(Park).
o To start the engine, insert the ignition
key and turn it to the "START" position.
Release it as soon as the engine starts.
Do not hold the key in the "START"
position for more than 15 seconds.NOTE:o For safety, the engine will not start if
the clutch pedal is not depressed fully
(Manual Transaxle) or the shift lever
is not in "P" or "N" Position (Automatic
Transaxle).
o The ignition key cannot be turned from
"ACC" position to "LOCK" position
unless the shift lever is in the "P"
(Park) position or the negative battery
terminal is disconnected from the bat-
tery. To remove the key, always
confirm that the shift lever is securely
positioned in "P" (Park) (For Automatic
Transaxle).
o For additional information about start-
ing, see page 2-5.
WARNING:
o All passengers must be properly
belted whenever the vehicle is moving.
Refer to pages: 1-22 through 1-34 for
more information on their proper use.
o Always check the surrounding areas
near your vehicle for people,
especially children, before putting a
car into 'drive'.
!
WARNING:
Always wear appropriate shoes when
operating your vehicle.
Unsuitable shoes (high heels, ski boots,
etc.) may interfere with your ability to
use the brake and accelerator pedal,
and the clutch (if installed).
!
WARNING:
When you intend to park or stop the
vehicle with the engine on, be careful not
to depress the accelerator pedal for a
long period of time. It may overheat the
engine or exhaust system and cause
fire.

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DRIVING YOUR HYUNDAI
10
!
C090I03L-GAT
CAUTION:
o Shift into "R", "D" and "P" position
only when the vehicle has completely
stopped.
o Do not accelerate the engine in
reverse or any of the forward positions
with the brakes applied.
o Always apply the footbrake when shift-
ing from "P" or "N", to "R" or
"D"position.
o Do not use the "P" (Park) position in
place of the parking brake. Always
set the parking brake, shift the
transaxle into "P" (Park) position and
turn off the ignition when you leave the
vehicle, even momentarily. Never
leave the vehicle unattended while
the engine is running.
o When accelerating from a stop on a
steep hill, the vehicle may have a
tendency to roll backwards. Shifting
the shift lever into 2nd gear while in
Sport mode will help prevent the
vehicle from rolling backwards.
o Check the automatic transaxle fluid
level regularly, and add fluid as
necessary.
o See the maintenance schedule for
the proper fluid recommendation.
C090H01L-GATNOTE:o For smooth and safe operation,
depress the brake pedal when shifting
from "Neutral" position or "Park"
position to a forward or reverse gear.
o The ignition key must be in the "ON"
position and the brake pedal fully de-
pressed in order to move the shift
lever from the "P" (Park) position to
any of the other positions.
o It is always possible to shift from "R",
"N", or "D" position to "P" position.
The vehicle must be fully stopped to
avoid transaxle damage. o To maintain the required levels of ve-
hicle performance and safety, the sys-
tem may not execute certain
gearshifts when the selector lever is
operated.
o Before driving away from a stop on a
slippery road, push the selector lever
forward into the +(UP) position. This
causes the transaxle to shift into 2nd
gear which is better for smooth driv-
ing away on a slippery road. Push the
selector lever to the -(DOWN) side to
shift back to 1st gear.
C090J02NF-GATSHIFT LOCK RELEASEIf the shift lever cannot be moved from the
P (Park) position with the brake pedal
depressed, continue depressing the brake,
then do the following:
1. Carefully remove the cap covering the
shift-lock override access hole.
2. Insert a screwdriver (or key) into the
access hole and press down on the
screwdriver (or key).
3. Move the shift lever.
4. Have your vehicle inspected by an au-
thorized Hyundai dealer immediately.
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DRIVING YOUR HYUNDAI
13
!
!
WARNING:
ABS or ESC will not prevent accidents
due to improper or dangerous driving
maneuvers. Even though vehicle control
is improved during emergency braking,
always maintain a safe distance between
you and objects ahead. Vehicle speeds
should always be reduced during
extreme road conditions.
The braking distance for cars equipped
with an anti-lock braking system (Elec-
tronic Stability Control System) may be
longer than for those without it in the
following road conditions.
During these conditions the vehicle
should be driven at reduced speeds:
o Rough, gravel or snow-covered
roads.
o With tire chains installed.
o On roads where the road surface is
pitted or has different surface height.
The safety features of an ABS or ESC
equipped vehicle should not be tested by
high speed driving or cornering. This
could endanger the safety of yourself or
others.
ELECTRONIC STABILITY CON-
TROL (ESC) SYSTEMC310A02NF-AAT
The Electronic Stability Control (ESC)
system is designed to stabilize the vehicle
during cornering manuevers. ESC checks
where you are steering and where the
vehicle is actually going. ESC applies the
brakes at individual wheels and intervenes
in the engine management system to sta-
bilize the vehicle.
The Electronic Stability Control (ESC)
system is an electronic system designed to
help the driver maintain vehicle control
under adverse conditions. It is not a
substitute for safe driving practices. Factors
including speed, road conditions and
driver steering input can all affect whether
ESC will be effective in preventing a loss
of control. It is still your responsibility to
drive and corner at reasonable speeds
and to leave a sufficient margin of safety.
ONF058011N
WARNING:
Never drive too fast for the road
conditions or too quickly when cornering.
Electronic stability control (ESC) will not
prevent accidents. Excessive speed in
turns, abrupt maneuvers and
hydroplaning on wet surfaces can still
result in serious accidents. Only a safe
and attentive driver can prevent
accidents by avoiding maneuvers that
cause the vehicle to lose traction. Even
with ESC installed, always follow all the
normal precautions for driving - including
driving at safe speeds for the conditions.

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DRIVING YOUR HYUNDAI
14
C310D01NF-AATIndicators and WarningThe indicators should illuminate when the
ignition key is turned to ON or START but
should go out after three seconds.
If the indicators do not illuminate, or the
ESC or ESC-OFF indicator does not go out
after 3 seconds, have the vehicle checked
by an authorized dealer.
Should there be any unusual operation of
the device while driving, the ESC-OFF
indicator illuminates as a warning.
If the ESC-OFF indicator illuminates, drive
your car to a safe place and stop the
engine.
Then, start the engine again to check if the
ESC-OFF indicator goes out.
If the indicator remains lit even after the
engine has been started, have your car
checked by an authorized Hyundai dealer.
C310B01NF-AATESC ON/OFF ModeWhen the ESC is operating, the ESC indi-
cator in the instrument cluster will blink.
If you turn the system off by pressing the
ESC switch, the ESC-OFF indicator will
come on and stay on. In the ESC-OFF
mode, the stability control will be
deactivated. Adjust your driving accord-
ingly. To turn the system back on, press the
switch again. The ESC-OFF indicator
should go off.NOTE:The ESC mode will automatically be
turned ON after the engine is turned off
and restarted.
CAUTION:
Driving with varying tire or wheel sizes
may cause the ESC system to
malfunction. When replacing tires, make
sure they are the same size as your
original tires.
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DRIVING YOUR HYUNDAI
15
!GOOD BRAKING PRACTICESC130A02A-AAT
WARNING:
o Whenever leaving vehicle or parking,
always set the parking brake as far as
possible and fully engage the
vehicle's transaxle into the park
position. Vehicles not fully engaged
in park with the parking brake set are
at risk for moving inadvertently and
injuring yourself or others.
o All vehicles should always have the
parking brake fully engaged when
parking to avoid inadvertent
movement of the car which can injure
occupants or pedestrians.
o Nothing should be carried on top of
the shelf panel behind the rear seat. If
there were an accident or a sudden
stop, such objects could move forward
and cause damage to the vehicle or
injure the occupants.o After being parked, check to be sure the
parking brake is not engaged and that the
parking brake indicator light is out before
driving away.
o Driving through water may get the brakes
wet. They can also get wet when the car is
washed. Wet brakes can be dangerous!
Your car will not stop as quickly if the brakes
are wet. Wet brakes may cause the car to
pull to one side. To dry the brakes, apply
the brakes lightly until the braking action
returns to normal, taking care to keep the
car under control at all times. If the braking
action does not return to normal, stop as
soon as it is safe to do so and call your
Hyundai dealer for assistance.
o Don't coast down hills with the car out of
gear. This is extremely hazardous. Keep
the car in gear at all times, use the brakes
to slow down, then shift to a lower gear so
that engine braking will help you maintain
a safe speed.
o Don't "ride" the brake pedal. Resting your
foot on the brake pedal while driving can
be dangerous because it can result in the
brakes overheating and losing their
effectiveness. It also increases the wear of
the brake components.
o If a tire goes flat while you are driving, apply
the brakes gently and keep the car pointed
straight ahead while you slow down. When
you are moving slowly enough for it to be
safe to do so, pull off the road and stop in
a safe place.o If your car is equipped with an automatic
transaxle, don't let your car creep
forward. To avoid creeping forward,
keep your foot firmly on the brake pedal
when the car is stopped.
o Use caution when parking on a hill.
Firmly engage the parking brake and
place the gear selector lever in "P"
(automatic transaxle) or in first or reverse
gear (manual transaxle). If your car is
facing downhill, turn the front wheels
into the curb to help keep the car from
rolling. If your car is facing uphill, turn
the front wheels away from the curb to
help keep the car from rolling. If there is
no curb or if it is required by other
conditions to keep the car from rolling,
block the wheels.
o Under some conditions your parking
brake can freeze in the engaged
position. This is most likely to happen
when there is an accumulation of snow
or ice around or near the rear brakes or
if the brakes are wet. If there is a risk that
the parking brake may freeze, apply it
only temporarily while you put the gear
selector lever in "P" (automatic) or in first
or reverse gear (manual transaxle) and
block the rear wheels so the car cannot
roll. Then release the parking brake.
o Do not hold the vehicle on the upgrade
with the accelerator pedal. This can
cause the transaxle to overheat. Always
use the brake pedal or parking brake.

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DRIVING YOUR HYUNDAI
16
o Travel lightly. Don't carry unnecessary
weight in your car. Weight reduces fuel
economy.
o Don't let the engine idle longer than
necessary. If you are waiting (and not in
traffic), turn off your engine and restart
only when you're ready to go.
o Remember, your Hyundai does not re-
quire extended warm-up. After the en-
gine has started, allow the engine to run
for 10 to 20 seconds prior to placing the
vehicle in gear. In very cold weather,
however, give your engine a slightly
longer warm-up period.
o Don't "lug" or "over-rev" the engine.
Lugging is driving too slowly in too high
a gear resulting in the engine bucking.
If this happens, shift to a lower gear.
Over-revving is racing the engine
beyond its safe limit. This can be avoided
by shifting at the recommended speeds.
o Use your air conditioning sparingly. The
air conditioning system is operated by
engine power so your fuel economy is
reduced when you use it. o Take care of your tires. Keep them
inflated to the recommended pressure.
Incorrect inflation, either too much or
too little, results in unnecessary tire
wear. Check the tire pressures at least
once a month.
o Be sure that the wheels are aligned
correctly. Improper alignment can result
from hitting curbs or driving too fast over
irregular surfaces. Poor alignment
causes faster tire wear and may also
result in other problems as well as
greater fuel consumption.
o Keep your car in good condition. For
better fuel economy and reduced
maintenance costs, maintain your car
in accordance with the maintenance
schedule in Section 5. If you drive your
car in severe conditions, more frequent
maintenance is required (see Section 5
for details).
o Keep your car clean. For maximum
service, your Hyundai should be kept
clean and free of corrosive materials. It
is especially important that mud, dirt,
ice, etc. not be allowed to accumulate
on the underside of the car. This extra
weight can result in increased fuel
consumption and also contribute to cor-
rosion.
DRIVING FOR ECONOMYC140A02A-AATYou can save fuel and get more miles from
your car if you follow these suggestions:
o Drive smoothly. Accelerate at a
moderate rate. Don't make "jack-rabbit"
starts or full-throttle shifts and maintain
a steady cruising speed. Don't race
between stoplights. Try to adjust your
speed to that of the other traffic so you
don't have to change speeds unneces-
sarily. Avoid heavy traffic whenever pos-
sible. Always maintain a safe distance
from other vehicles so you can avoid
unnecessary braking. This also reduces
brake wear.
o Drive at a moderate speed. The faster
you drive, the more fuel your car uses.
Driving at a moderate speed, especially
on the highway, is one of the most
effective ways to reduce fuel
consumption.
o Don't "ride" the brake or clutch pedal.
This can increase fuel consumption and
also increase wear on these
components. In addition, driving with
your foot resting on the brake pedal may
cause the brakes to overheat, which
reduces their effectiveness and may
lead to more serious consequences.