Hyundai Sonata

49
Features of your vehicle
Battery replacement
A smart key battery should last for sever-
al years, but if the smart key is not work-
ing properly, try replacing the battery with
a new one. If you are unsure how to use
your smart key or replace the battery,
contact an authorised HYUNDAI dealer.
✽✽NOTICE
The circuit inside the smart key can
have a problem if exposed to moisture
or static electricity. If you are unsure
how to use your smart key or replace the
battery, contact an authorised
HYUNDAI dealer.
1. Pry open the rear cover of the smart key.
2. Replace the battery with a new battery (CR2032). When replacing the battery,
make sure the battery positive “+” sym-
bol faces up as indicated in the illus-
tration.
3. Install the battery in the reverse order of removal.
✽✽ NOTICE
 Using the wrong battery can cause the smart key to malfunction. Be sure to
use the correct battery.
 Circuits inside the smart key may
develop problems when dropped,
exposed to moisture or static elec-
tricity.
 If you suspect that your smart key might have sustained some damage,
or you feel your smart key is not
working correctly, contact an autho-
rised HYUNDAI dealer.
CAUTION
An inappropriately disposed bat-
tery can be harmful to the environ-
ment and human health.
Dispose the battery according toyour local law(s) or regulation.
OBH048004

Features of your vehicle
10
4
Remote keyless entry system operations
Lock (1)
All doors are locked if the lock button is pressed whilst all doors are closed.
The hazard warning lights blink once to
indicate that all doors are locked.
However, if any door, engine bonnet or
trunk remains open, the hazard warning
lights will not operate. If all doors, engine
bonnet and trunk are closed after the
lock button is pressed, the hazard warn-
ing lights blink once.
Unlock (2)
All doors are unlocked if the unlock but- ton is pressed.
The hazard warning lights will blink twice
to indicate that all doors are unlocked.
After depressing this button, the doors
will be locked automatically unless you
open any door within 30 seconds.
Trunk unlock (3)
The trunk is unlocked if the button is
pressed for more than 1 second.
Once the trunk is opened and then
closed with all doors locked, the trunk will
be locked automatically. Transmitter precautions
✽✽
NOTICE
The transmitter will not work if any of
following occur:
 The ignition key is in ignition switch.
 You exceed the operating distance limit (about 30 m [90 feet]).
 The battery in the transmitter is weak.
 Other vehicles or objects may be blocking the signal.
 The weather is extremely cold.
 The transmitter is close to a radio transmitter such as a radio station or
an airport which can interfere with
normal operation of the transmitter.
When the transmitter does not work
correctly, open and close the door with
the ignition key. If you have a problem
with the transmitter, contact an autho-
rised HYUNDAI dealer.
REMOTE KEYLESS ENTRY (IF EQUIPPED)
ONF048011L
CAUTION
Keep the transmitter away from water or any liquid. If the keylessentry system is inoperative due to
exposure to water or liquids, it will not be covered by your manufactur-er vehicle warranty.

411
Features of your vehicle
Battery replacement
The transmitter uses a 3 volt lithium bat-
tery which will normally last for several
years. When replacement is necessary,
use the following procedure.
1. Insert a slim tool into the slot and gen-tly pry open the transmitter centre
cover. 2. Replace the battery with a new battery
(CR2032). When replacing the battery,
make sure the battery positive “+” sym-
bol faces up.
3. Install the battery in the reverse order of removal.
For replacement transmitters, see an
authorised HYUNDAI dealer for transmit-
ter reprogramming.
CAUTION
Changes or modifications not expressly approved by the party
responsible for compliance couldvoid the user’s authority to operatethe equipment. If the keyless entry system is inoperative due to
changes or modifications notexpressly approved by the partyresponsible for compliance, it will
not be covered by your manufactur-er’s vehicle warranty.
ONF048120HNF2005

Features of your vehicle
12
4
CAUTION
The keyless entry system trans-
mitter is designed to give you
years of trouble-free use, howev-er it can malfunction if exposed tomoisture or static electricity. If you are unsure how to use your
transmitter or replace the battery,contact an authorised HYUNDAI dealer.
Using the wrong battery can cause the transmitter to malfunc-tion. Be sure to use the correctbattery.
To avoid damaging the transmit- ter, don't drop it, get it wet, or
expose it to heat or sunlight.
CAUTION
An inappropriately disposed bat-tery can be harmful to the environ-
ment and human health.
Dispose the battery according toyour local law(s) or regulation.

413
Features of your vehicle
THEFT-ALARM SYSTEM (IF EQUIPPED)
This system is designed to provide pro-
tection from unauthorised entry into the
car. This system is operated in three
stages: the first is the "Armed" stage, the
second is the "Theft-alarm" stage, and
the third is the "Disarmed" stage. If trig-
gered, the system provides an audible
alarm with blinking of the hazard warning
lights.Armed stage
Using the smart key
Park the vehicle and stop the engine.
Arm the system as described below.
1. Turn off the engine.
2. Make sure that all doors, the engine
bonnet and trunk lid are closed and latched.
3. Lock the doors by pressing the button of the front outside door handle with
the smart key in your possession.
After completion of the steps above,
the hazard warning lights operateonce to indicate that the system is
armed.
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 lights won't
operate and theft-alarm will not arm.
After this, trunk lid and engine bonnet
are closed, the hazard warning lights
blink once.
button on the smart key.
After completion of the steps above,
the hazard warning lights will operateonce to indicate that the system is
armed. If any door, trunk lid or engine bonnet
remains open, the hazard warning
lights won't operate and theft-alarm
will not arm. After this, if all doors,
trunk lid and engine bonnet are
closed, the hazard warning lights
blink once.
Using the transmitter
Park the vehicle and stop the engine.
Arm the system as described below.
1. Turn off the engine and remove the
ignition key from the ignition switch.
2. Make sure that all doors, the engine bonnet and trunk lid are closed and latched.
3. Lock the doors by pressing the lock button on the transmitter.
After completion of the steps above,
the hazard warning lights will blinkonce to indicate that the system is
armed.
If any door, trunk lid or engine bonnet
remains open, the hazard warning
lights won't operate and theft-alarm will
not arm. After this, if all doors, trunk lidand engine bonnet are closed, the haz-
ard warning lights blink once.
Armedstage
Theft-alarm stageDisarmedstage

Features of your vehicle
14
4
Do not arm the system until all pas-
sengers have left the vehicle. If the system is armed whilst a passen-
ger(s) remains in the vehicle, the
alarm may be activated when the
remaining passenger(s) leave the
vehicle. If any door, trunk lid orengine bonnet is opened within 30seconds after entering the armed
stage, the system is disarmed to
prevent unnecessary alarm. Theft-alarm stage
The alarm will be activated if any of the
following occurs whilst the system is
armed.
A door is opened without using the
transmitter (or smart key).
The trunk is opened without using the transmitter (or smart key).
The engine bonnet is opened.
The horn will sound and the hazard
warning lights will blink continuously for
approximately 30 seconds. To turn off the
system, unlock the doors with the trans-
mitter (or smart key). Opening the trunk with the alarm armed (if equipped)
When the alarm is armed, the alarm will
not sound if the trunk lid is opened with
the transmitter (or the smart key).
Once the trunk is opened and then
closed, the trunk will be locked automati-
cally and the system will be armed again.
Also, if any of the doors or bonnet is
opened whilst the trunk lid open and the
alarm armed, the alarm will sound.

415
Features of your vehicle
Disarmed stage
The system will be disarmed when the
doors are unlocked with the transmitter
(or smart key).
After depressing the unlock button, the
hazard warning lights will blink twice to
indicate that the system is disarmed.
After depressing the unlock button, if any
door (or trunk) is not opened within 30
seconds, the system will be rearmed.
✽✽NOTICE
 Avoid trying to start the engine whilst the alarm is activated. The vehicle
starter motor is disabled during the
theft-alarm stage.
If the system is not disarmed with the
transmitter, insert the key into the
ignition switch, turn the ignition
switch to the ON position and wait for
30 seconds. Then the system will be
disarmed. (except China)
 If you lose your keys, consult your
authorised HYUNDAI dealer.
CAUTION
Do not change, alter or adjust the
theft-alarm system because it could
cause the theft-alarm system tomalfunction and should only beserviced by an authorised HYUNDAI dealer.
Malfunctions caused by improperalterations, adjustments or modifi-cations to the theft-alarm systemare not covered by your vehicle
manufacturer warranty.

Features of your vehicle
16
4
Operating door locks from out-
side the vehicle
Turn the key toward the rear of the
vehicle to unlock and toward the front
of the vehicle to lock.
If you lock/unlock the driver’s door with a key, all vehicle doors will lock/unlock
automatically. Doors can also be locked and
unlocked with the transmitter (or smart
key). (if equipped)
Once the doors are unlocked, they may be opened by pulling the door handle.
When closing the door, push the door by hand. Make sure that doors are
closed securely.
✽✽ NOTICE
 In cold and wet climates, door locks and door mechanisms may not work
properly due to freezing conditions.
 If the door is locked/unlocked multi- ple times in rapid succession with
either the vehicle key or door lock
switch, the system may stop operating
temporarily in order to protect the
circuit and prevent damage to system
components.
To lock a door without the key, push theinside door lock button (1) or central
door lock switch (2 ) to the “Lock” posi-
tion and close the door (3).
If you lock the door with the central door lock switch (2), all vehicle doors
will lock automatically.
✽✽ NOTICE
Always remove the ignition key, engage
the parking brake, close all windows
and lock all doors when leaving your
vehicle unattended.
DOOR LOCKS
OYF049006/H
LockUnlock
OYF049007R

417
Features of your vehicle
Operating door locks from inside
the vehicle
With the door lock button
To unlock a door, push the door lockbutton (1) to the “Unlock” position. The
red mark (2) on the door lock button
will be visible.
To lock a door, push the door lock but- ton (1) to the “Lock” position. If the door
is locked properly, the red mark (2) on
the door lock button will not be visible.
To open a door, pull the door handle (3) outward. If the inner door handle of the driver’s
(or front passenger’s) door is pulled
when the door lock button is in lock
position, the button is unlocked and
door opens. (if equipped)
Front door cannot be locked if the igni- tion key is in the ignition switch and thedoor is open.
A door cannot be locked if the smart key is in the vehicle and any door isopen.
With central door lock switch
Operate by depressing the central door
lock switch.
When pushing down on the front por-tion (1) of the switch, all vehicle doors
will lock.
When pushing down on the rear por- tion (2) of the switch, all vehicle doors
will unlock.
If the key is in the ignition switch and front door is open, the doors will not
lock even though the front portion (1)
of central door lock switch is pressed.
If the smart key is in the vehicle and any door is open, the doors will not
lock even though the front portion(1) of
central door lock switch is pressed.
OYF049008R
Lock
Unlock
WARNING - Door lock mal-
function
If a power door lock ever fails to
function whilst you are in the vehi-
cle, try one or more of the following
techniques to exit:
Operate the door unlock feature repeatedly (both electronic and
manual) whilst simultaneously
pulling on the door handle.
Operate the other door locks and handles, front and rear.
Lower a front window and use the key to unlock the door from out-
side.OYF049009R

Features of your vehicle
18
4
Impact sensing door unlock sys- tem
All doors will be automatically unlocked after an impact causes the air bags to
deploy.
✽✽
NOTICE
You can activate or deactivate some auto
door lock/unlock features in the vehicle
setting as follows;
 Speed sensing auto door lock
 Auto door unlock by unlocking the driver's door
 Auto door unlock when the ignition
key is removed from the ignition
switch or the smart key is removed
from the smart key holder.
 Auto door lock/unlock by shifting the transaxle shift lever out of P (Park) or
into P (Park)
If you want to activate or deactivate
some door lock/unlock feature, refer to
the “vehicle setting” in this chapter.
WARNING - Unlocked
vehicles
Leaving your vehicle unlocked can
invite theft or possible harm to you
or others from someone hiding in
your vehicle whilst you are gone.
Always remove the ignition key,
engage the parking brake, close all
windows and lock all doors when
leaving your vehicle unattended.
WARNING - Unattended
children
An enclosed vehicle can become
extremely hot, causing death or
severe injury to unattended chil-dren or animals who cannot escape
the vehicle. Furthermore, children
might operate features of the vehi-
cle that could injure them, or they
could encounter other harm, possi-
bly from someone gaining entry to
the vehicle. Never leave children or
animals unattended in your vehicle.
WARNING - Doors
The doors should always be fully closed and locked whilst the
vehicle is in motion to prevent
accidental opening of the door.
Locked doors will also discour-
age potential intruders when the
vehicle stops or slows.
Be careful when opening doors and watch for vehicles, motorcy-
cles, bicycles or pedestrians
approaching the vehicle in the
path of the door. Opening a door
when something is approaching
can cause damage or injury.