ECU Hyundai Sonata

2
DRIVING YOUR HYUNDAI
22
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 LIMITC190F01JM-AATTire and Loading Information Label
I030A03NF-A
The tire label located on the driver's
side of the center pillar outer panel
gives the original tire size, cold tire
pressures recommended for your ve-
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

2
DRIVING YOUR HYUNDAI
26
!
WARNING:
Items you carry inside your vehicle
can strike and injure people in a
sudden stop or turn, or in a crash.
o Put things in the cargo area of
your vehicle. Try to spread the
weight evenly.
o Never stack items, like suitcases,
inside the vehicle above the tops
of the seats.
o Do not leave an unsecured child
restraint in your vehicle.
o When you carry something inside
the vehicle, secure it.
o Do not drive with a seat folded
down unless necessary. NOTE:
o Overloading your vehicle may
cause damage. Repairs would not
be covered by your warranty. Do
not overload your vehicle.
o Using heavier suspension com-
ponents to get added durability
might not change your weight rat-
ings. Ask your dealer to help you
load your vehicle the right way.
The label will help you decide how much
cargo and installed equipment your
vehicle can carry.
If you carry items inside your vehicle –
like suitcases, tools, packages, or any-
thing else – they move as fast as the
vehicle goes. If you have to stop or turn
quickly, or if there is a crash, the items
will keep going and can cause an injury
if they strike the driver or a passenger.

32WHAT TO DO IN AN EMERGENCY
IF THE ENGINE WILL NOT START!
D010A01A-AAT D010B02A-AAT
If Engine Doesn't Turn Over or Turns
Over Slowly
D010C02Y-AATIf Engine Turns Over Normally but Does
Not Start1. Check fuel level.
2. With the key in the "OFF" position, check all
connectors at ignition, coil and spark plugs.
Reconnect any that may be disconnected or
loose.
3. Check the fuel line in the engine compart-
ment.
4. If the engine still does not start, call a Hyundai
dealer or seek other qualified assistance.D010D01A-AATIf Engine Stalls While Driving1. Reduce your speed gradually, keeping a
straight line. Move cautiously off the road to
a safe place.
2. Turn on your emergency flashers.
3. Try to start the engine again. If your vehicle
will not start, contact a Hyundai dealer or
seek other qualified assistance.
WARNING:
If the engine will not start, do not push or
pull the car to start it. This could result in a
collision or cause other damage. In addi-
tion, push or pull starting may cause the
catalytic converter to be overloaded and
create a fire hazard.
1. If your car has an automatic transaxle, be
sure the gear selector lever is in "N" or "P"
and the emergency brake is set.
2. Check the battery connections to be sure
they are clean and tight.
3. Turn on the interior light. If the light dims or
goes out when you operate the starter, the
battery is discharged.
4. Check the starter connections to be sure
they are securely tightened.
5. Do not push or pull the vehicle to start it. See
instructions for "Jump Starting".
HNF5017

3
WHAT TO DO IN AN EMERGENCY
11
it is correct. Always reinstall the valve
cap after checking or adjusting tire
pressure. If the cap is not replaced, air
may leak from the tire. If you lose a
valve cap, buy another and install it as
soon as possible.
After you have changed wheels, al-
ways secure the flat tire in its place and
return the jack and tools to their proper
storage locations.
IF YOUR VEHICLE MUST BE
TOWEDD080A01O-GATIf your vehicle has to be towed, it should be done
by your Hyundai dealer or a commercial tow
truck service. This will help assure that your
vehicle is not damaged in towing. Also, profes-
sionals are generally aware of local laws gov-
erning towing. In any case, rather than risk
damage to your car, it is suggested that you
show this information to the tow truck operator.
Be sure that a safety chain system is used and
that all local laws are observed.
It is recommended that your vehicle be towed
with a wheel lift and dollies or flatbed equipment
with all the wheels off the ground.
!
CAUTION:
o Your vehicle can be damaged if towed
incorrectly!
o Be sure the transaxle is in neutral.
o When the engine will not start, be sure
the steering is unlocked by placing the
key in the "ACC" position.
D080B01O-GATTowing the Vehicle
HNF4015
Your vehicle can be towed by wheel lift type
truck (1), (2) or flatbed equipment (3).1)
2)
3)
dolly

5
VEHICLE MAINTENANCE REQUIREMENTS
7
F060D01A-AATo Fuel Lines, Fuel Hoses and Connec-
tionsCheck the fuel lines, fuel hoses and connec-
tions for leakage and damage. Have a trained
technician replace any damaged or leaking
parts immediately.F060B01NF-GATo Drive BeltsInspect all drive belts for evidence of cuts,
cracks, excessive wear or oil saturation and
replace if necessary. Drive belts should be
checked periodically for proper tension.
F060M01A-AATo Engine Oil and FilterThe engine oil and filter should be changed at the
intervals specified in the maintenance sched-
ule. If the car is being driven in severe condi-
tions, more frequent oil and filter changes are
required.F060C01A-AATo Fuel FilterA clogged filter can limit the speed at which the
vehicle may be driven, damage the emission
system and cause hard starting. If an exces-
sive amount of foreign matter accumulates in
the fuel tank, the filter may require replacement
more frequently.
After installing a new filter, run the engine for
several minutes, and check for leaks at the
connections. Fuel filters should be installed by
trained technicians.
F060F01A-AATo Vacuum, Crankcase Ventilation
HosesInspect the surface of hoses for evidence of
heat and/or mechanical damage. Hard and
brittle rubber, cracking, tears, cuts, abrasions,
and excessive swelling indicate deterioration.
Particular attention should be paid to examine
those hose surfaces nearest to high heat
sources, such as the exhaust manifold.
Inspect the hose routing to assure that the
hoses do not come in contact with any heat
source, sharp edges or moving component
which might cause heat damage or mechanical
wear. Inspect all hose connections, such as
clamps and couplings, to make sure they are
secure, and that no leaks are present. Hoses
should be replaced immediately if there is any
evidence of deterioration or damage.
EXPLANATION OF SCHEDULED MAINTENANCE ITEMS

6
DO-IT-YOURSELF MAINTENANCE
10
3. Be sure your drain receptacle is in place.
Open the drain cock on the radiator. Allow all
the engine coolant to drain from the cooling
system, and then securely close the drain
cock.
4. Check Section 9 for the capacity of the
cooling system in your car. Then, following
the manufacturer's directions on the engine
coolant container, add the appropriate quan-
tity of coolant to the radiator.
5. Slowly fill the radiator with the proper coolant
mixture (see the "Recommended Engine
Coolant in previous page) until the fluid level
stays up in the radiator neck. And pump the
radiator hose in order to bleed the air.
HNF5008
2. Wrap a thick cloth around the radiator cap
and slowly turn the radiator cap counter-
clockwise without pressing down on it, until
it stops. This relieves any pressure remain-
ing in the cooling system. When you are sure
that all the pressure has been released,
remove the radiator cap by pushing down
and turning counterclockwise.
G050D02NF-A
G050D01NF
6. Run the engine at idle until the coolant circu-
lates. If the cooling fan operates and the
coolant starts to circulate, add the coolant to
the reservoir.
7. To bleed the air in the cooling system, repeat
procedure 6 until the cooling fan operates
3~5 times.
8. Replace the radiator cap and turn it until
tightly installed. And then, add coolant to the
reservoir until the level is between "L" and
"F".
9. Stop the engine and check the coolant level
when the engine is cool. The level of the
coolant should be the "L" and "F" lines on the
reservoir. If the level is below the "L" line,
repeat the procedure 4~8 until the level
between "L" and "F".

6
DO-IT-YOURSELF MAINTENANCE
18
CHECKING THE TRANSAXLE
FLUID (AUTOMATIC)G110A01E-AATTransaxle fluid in the automatic transaxle should
be checked at those intervals specified in the
vehicle maintenance schedule in Section 5.NOTE:Automatic transaxle fluid is basically red in
color. As driving distance increases, the
fluid color turns darkish red gradually. It is
a normal condition and you should not
judge the need to replace based upon the
changing color.
You must replace the automatic transaxle
fluid in accordance with intervals specified
in the vehicle maintenance schedule in
section 5.
!
G110B05A-AATRecommended FluidYour Hyundai automatic transaxle is specially
designed to operate with HYUNDAI GENUINE
ATF SP III, DIAMOND ATF SP III, SK ATF SP
III or other brands meeting the SP III specifica-
tion approved by Hyundai Motor Co.. Damage
caused by a nonspecified fluid is not covered by
your new vehicle limited warranty.
CAUTION:
Use of aftermarket ATF additives may cause
damage to the automatic transaxle.
Only use HYUNDAI GENUINE ATF SP III,
DIAMOND ATF SP III, SK ATF SP III or other
brands meeting the SP III specification ap-
proved by Hyundai Motor Co.. If you are
having your vehicle serviced at a facility
other than a Hyundai dealer, verify that the
correct ATF is used for your vehicle.
G100B02A-AATTo Check the Manual Transaxle
Fluid Level
G100B01L
Park the car on level ground with the engine off.
1. Using a wrench of the correct size, loosen
the oil filler plug by turning it counterclock-
wise and remove it with your fingers.
2. Use your finger to feel inside the hole. The oil
level should be at its bottom edge. If it is not,
check for leaks before adding oil. To refill the
transaxle or bring the oil level up, add oil
slowly until it reaches the proper level. Do not
overfill.
3. Replace the plug and washer, screw it in with
your fingers and then tighten securely with
the wrench.

6
DO-IT-YOURSELF MAINTENANCE
40
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
HORN
TAIL
ECU
IG1
DRL
FR FOG
A/CON
F/PUMP
DIODE
ATM
STOP
H/LP LO RH
S/ROOF
H/LP WASHER
H/LP HI
ECU
SNSR.3
SNSR.1
SNSR.2
B/UP
IGN COIL
ECU (IG1)
H/LP LO
ABS
PROTECTED COMPONENTS
ABS/ESC control module, Multipurpose check connector
ABS/ESC control module, Multipurpose check connector
Fuse 23, 24, 30, 31, 32, 33, 34, 35
Defogger relay
Blower relay
Power window relay, Fuse 16
Start relay, Ignition switch (IG2, START)
Engine control unit relay
Power connector 1/2, Fuse 21,22
Ignition switch (ACC, IG1)
Fusible Iink (ABS. 1, ABS. 2, RR HTD, BLOWER)
(Spare)
Horn relay
Tail light relay
PCM
(Spare)
Siren relay, DRL control module
Front fog light relay
A/C relay
Fuel pump relay
(Spare)
ATM control relay
Stop light relay
(Spare)
Sunroof control module
Headlight washer motor
Headlight relay (High)
(Spare)
Oxygen sensor, Fuel pump relay
Mass air flow sensor, Crankshaft/Camshaft position sensor, Oil control valve, SMATRA
A/C relay, Cooling fan relay, Injectors
Back up light switch, Pulse generator, Vehicle speed sensor
Ignition coils, Condenser
PCM
Headlight relay (Low)
ABS/ESC control module, Multipurpose check connector
ABS.1
ABS.2
I/P B+1
RR HTD
BLOWER
P/WDW
IGN.2
ECU RLY
I/P B+2
IGN.1
ALT
MDPSFUSE RATING
40A
20A
40A
40A
40A
40A
40A
30A
30A
30A
150A
100A
15A
20A
10A
10A
15A
15A
10A
20A
-
20A
15A
15A
15A
20A
20A
10A
10A
15A
15A
10A
20A
10A
20A
10A
DESCRIPTION
FUSIBLE
LINK
FUSE

10
INDEX
2
A
Accessory Box................................................................................1-75
Advanced Supplemental Restraint (AIRBAG) System (SRS) ......1-36
Curtain airbag...............................................................................1-47
Driver's and passenger's front airbag.......................................1-37
Occupant classification system..................................................1-42
Side impact airbag .......................................................................1-45
Air Cleaner Filter ..............................................................................6-14
Air Conditioning
Care..............................................................................................6-21
Filter.................................................................................. 1-112, 6-22
Operation.......................................................................... 1-103, 6-21
Switch.........................................................................................1-103
Antenna..........................................................................................1-130
Ashtray.............................................................................................1-68
Audio System
Audio remote control switch .......................................................1-95
Compact disc player operation (V480)....................................1-118
Compact disc player operation (V490)....................................1-125
Stereo radio operation (V480) ..................................................1-115
Stereo radio operation (V490) ..................................................1-122
Automatic Heating and Cooling Control System.........................1-106
Automatic-Dimming Mirror with Z-Nav™ Electronic Compass
Display and HomeLink
®
...........................................................................................................
1-79B
Battery..............................................................................................6-27
Binding Arbitration............................................................................8-15
Brake
Anti-lock brake system (ABS) ....................................................2-12
Checking the brakes...................................................................6-20
Fluid ..............................................................................................6-20
Pedal clearance...........................................................................6-24
Pedal free-play.............................................................................6-24
Practices......................................................................................2-14
Breaking-In your New Hyundai ........................................................ 1-3
C
Care of Discs ................................................................................1-130
Catalytic Converter............................................................................ 7-3
Center Console Compartment........................................................1-76
Child Restraint System ...................................................................1-28
Installing a child restraint system with
"Tether Anchorage" system ......................................................1-30
Securing a child restraint system with "ISOFIX" system .........1-31
Child-Protector Rear Door Lock ...................................................... 1-6
Cigarette Lighter..............................................................................1-67
Clock................................................................................................1-66
Clutch
Pedal free-play.............................................................................6-23