2008 Hyundai Sonata ECU

1FEATURES OF YOUR HYUNDAI90
!
WARNING:
- When using a portable fuel container,
be sure to place the container on the
ground while refueling. Static electric-
ity 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 elec-
tronic interference from cellular phones
can ignite fuel vapors causing a fire.
- When refueling, always turn the engine
off. Sparks by engine compartment
electrical equipment can ignite fuel
vapors causing a fire. After refueling,
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.
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.
HNF2022
HOOD RELEASEB570A01NF-GAT1. Pull the release knob to unlatch the hood.
2. Pull the secondary latch up and lift the hood.
B570A01NF
HNF2024-E

1FEATURES OF YOUR HYUNDAI92
B600B01NF-GATTilt and telescopic type
(If Installed)To adjust the steering wheel:
1. Push the lever downward fully to unlock.
2. Adjust upward or downward and forward or
backward to set the steering wheel to the
desired position.
3. After adjustment, securely tighten the lever
by pulling it upward.
B600B01NF-A
STEERING WHEELB600A01NF-GATTilt typeTo adjust the steering wheel:
1. Pull the lever toward you and hold it to unlock.
2. Raise or lower the steering wheel to the
desired position.
3. After adjustment, release the lever.
HNF2067
B500B01B-GATIlluminated Vanity MirrorOpening the lid of the vanity mirror will automati-
cally turn on the mirror light.
HNF2172

2
DRIVING YOUR HYUNDAI
3
!
BEFORE STARTING
THE ENGINEC020A02A-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 headrest 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 un-
less the shift lever is in the "P" (Park)
position or the negative battery terminal
is disconnected from the battery. 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: 1-21 through 1-28 for more infor-
mation on their proper use.
o Always check the surrounding areas near
your vehicle for people, especially chil-
dren, before putting a car into 'drive.'
!
WARNING:
Always wear appropriate shoes when oper-
ating 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).

2
DRIVING YOUR HYUNDAI
9
C090E02NF-GATo D (Drive):Use for normal driving. Bring the vehicle to a
complete stop before shifting the selector to "D"
position. The transaxle will automatically shift
through a four/five gear sequence.C090D02A-AATo N (Neutral):In the "N" position, the transaxle is in neutral,
which means that no gears are engaged. The
engine can be started with the shift lever in "N"
position, although this is not recommended
except if the engine stalls while the car is
moving.C090C01A-AATo R (Reverse):Use for backing up the vehicle. Bring the car to
a complete stop before shifting the selector
lever to "R" position.
CAUTION:
o In sports mode, the driver must execute
upward shifts in accordance with pre-
vailing road conditions, taking care to
keep the engine speed below the red
zone.
o For engine protection, upward shifts are
made automatically when the engine
rpm reaches the red zone.
o By rapidly moving the selector lever
backwards (-) twice it is possible to skip
one gear, i.e., 3rd to 1st, 4th to 2nd or 5th
to 3rd. Since sudden engine braking
and/or rapid acceleration can cause a
loss of traction, however, downshifts
must be made carefully in accordance
with the vehicle's speed.
!
C090F02L-GATSports ModeWhether the vehicle is stationary or in motion,
sports mode is selected by pushing the selector
lever from the "D" position into the manual gate.
To return to "D" range operation, push the
selector lever back into the main gate.
In sports mode, moving the selector lever back-
wards and forwards can make rapid gearshifts
simple. In contrast to a manual transaxle, the
sports mode allows gearshifts with the accel-
erator pedal depressed.
UP (+) : Push the lever forward once to shift up
one gear.
DOWN (-) : Pull the lever backwards once to
shift down one gear.
SKIP : By rapidly moving the selector forward
or backward twice, it is possible to skip one
gear, i.e. 1st to 3rd or 3rd to 1st .
C090F02NF
NOTE:o In sports mode, only the four/five for-
ward gears can be selected. To reverse or
park the vehicle, move the selector lever
to the "R" or "P" position as required.
o In sports mode, downward shifts are
made automatically when the vehicle
slows down. When the vehicle stops, 1st
gear is automatically selected.

2
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 ten-
dency 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 "Neu-
tral" 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 driving
away on a slippery road. Push the selec-
tor lever to the -(DOWN) side to shift
back to 1st gear.
C090J01NF-GATSHIFT LOCK RELEASE (If Installed)If you cannot move the shift lever from the "P"
(Park) position to any other position with the
brake pedal fully depressed and the ignition key
in the "ON" position, remove the cap on the
console and with a thin object such as a flat-
head screwdriver, push the shift lock release
button down. Then, with the brake pedal de-
pressed, move the shift lever to the desired
position, and then the shift lock release button
will automatically return to its original position
after shifting from the "P" (Park) position. Then,
reinstall the cap.
If you need to use the shift lock release, it could
mean your car is developing a problem. Have
the car checked by your Hyundai dealer.
C090J01NF

2
DRIVING YOUR HYUNDAI
20
C190B01S-AATTrailer HitchesSelect the proper hitch and ball combination,
making sure that its location is compatible with
that of the trailer or vehicle being towed.
Use a quality non-equalizing hitch which distrib-
utes the tongue load uniformly throughout the
chassis.
The hitch should be bolted securely to the car
and installed by a qualified technician. DO NOT
USE A HITCH DESIGNED FOR TEMPORARY
INSTALLATION AND NEVER USE ONE THAT
ATTACHES ONLY TO THE BUMPER.C190C01Y-AATTrailer BrakesIf your trailer is equipped with a braking system,
make sure it conforms to federal and/or local
regulations and that it is properly installed and
operating correctly.NOTE:If you tow a trailer or vehicle, your car will
require more frequent maintenance due to
the additional load. See Maintenance Under
Severe Usage Conditions" on page 5-6.
TRAILER OR VEHICLE TOWING!
C190A01TG-AATIf you are considering towing with your car, you
should first check with your State's Department
of Motor Vehicles to determine their legal re-
quirements.
Since laws vary from State to State the require-
ments for towing trailers, cars, or other types of
vehicles or apparatus may differ. Ask your
Hyundai dealer for further details before towing.
CAUTION:
o Do not do any towing with your car
during its first 1,200 miles (2,000 km) in
order to allow the engine to properly
break in. Failure to heed this caution may
result in serious engine or transaxle
damage.
o When towing a trailer, be sure to consult
your Hyundai dealer for further informa-
tion on additional requirements such as
a towing kit, etc.
USE OF LIGHTSC180A01A-AATCheck your lights regularly for correct opera-
tion and always keep them clean. When driving
during the day in conditions of poor visibility, it
is helpful to drive with headlights on low beam.
This enables you to be seen, as well as to see.

2
DRIVING YOUR HYUNDAI
22
C190F01Y-GATTrailer or Vehicle Towing Tips1. Before towing, check hitch and safety chain
connections as well as proper operation of
the trailer running lights, brake lights, and
turn signals.
2. Always drive your vehicle at a moderate
speed. (Less than 60 mph)
3. Trailer towing requires more fuel than normal
conditions.
4. To maintain engine braking efficiency and
electrical charging performance, do not tow
a trailer with the transaxle in fifth gear (manual
transaxle).
5. Always secure items in the trailer to prevent
load shift while driving.
6. Check the condition and air pressure of all
tires on the trailer and your car. Low tire
pressure can seriously affect the handling.
Also check the spare tire.
7. The vehicle/trailer combination is more af-
fected by crosswind and buffeting.
When being passed by a large vehicle, keep
a constant speed and steer straight ahead.
If there is too much wind buffeting, slow down
to get out of the other vehicle's air turbulence.
!
lbs(kg)
!
Tongue
200 (90)
- With3.3L
Brake 2.4L
Without BrakeMaximum Towable Weight
Trailer
2000 (900)
1500 (675)
1000 (450)
CAUTION:
The following specifications are recom-
mended when towing a trailer. The loaded
trailer weight cannot safely exceed the val-
ues in the chart below.
WARNING:
o Improperly loading your vehicle and
trailer can seriously affect its steering
and braking performance causing a
crash which could cause serious injury
or death.
o Towing a trailer affects vehicle handling
and braking.
o Drive more slowly when towing a trailer
and allow more distance when braking.
o Be careful when driving in slippery and
windy conditions.
o Be careful when turning and while driv-
ing up and down hills. 3. The front or rear axle weight must not
exceed the Gross Axle Weight Rating
(GAWR) shown on the vehicle identifi-
cation plate (see page 8-2). It is possible
that your towing package does not ex-
ceed the GVWR but exceeds the GAWR.
Improper trailer loading and/or too much
luggage in the trunk can overload the
rear axle. Redistribute the load and check
the axle weight again.

2
DRIVING YOUR HYUNDAI
23
8. When parking your car and trailer, especially
on a hill, be sure to follow all the normal
precautions. Turn your front wheel into the
curb, set the parking brake firmly, and put the
transaxle in 1st or Reverse (manual) or Park
(automatic). In addition, place wheel chocks
at each of the trailer's tires.
9. If the trailer has electric brakes, start your
vehicle and trailer moving, and then apply the
trailer brake controller by hand to be sure the
brakes are working. This lets you check
your electrical connection at the same time.
10.During your trip, check occasionally to be
sure that the load is secure, and that the
lights and any trailer brakes are still working.
11.Avoid jerky starts, sudden acceleration or
sudden stops.
12.Avoid sharp turns and rapid lane changes.
13.Avoid holding the brake pedal down too long
or too frequently. This could cause the brakes
to overheat, resulting in reduced braking
efficiency.
14.When going down a hill, shift into a lower gear
and use the engine braking effect.
When ascending a long grade, downshift the
transaxle to a lower gear and reduce speed
to reduce chances of engine overloading
and/or overheating.
CAUTION:
If overheating should occur when towing,
(the temperature gauge reads near red zone),
taking the following action may reduce or
eliminate the problem.
1. Turn off the air conditioner.
2. Reduce highway speed.
3. Select a lower gear when going uphill.
4. While in stop and go traffic, place the
gear selector in park or neutral and idle
the engine at a higher speed.
!
VEHICLE LOAD LIMITC190F02JM-AATTire and Loading Information Label
I030A03NF-A
15.If you have to stop while going uphill, do not
hold the vehicle in place by pressing on the
accelerator. This can cause the automatic
transaxle to overheat. Use the parking brake
or footbrake.NOTE:When towing check transaxle fluid more
frequently.
I030A04NF-A
Type A
Type B