2016 Hyundai Sonata Plug-in Hybrid key battery

3-7
Convenient features of your vehicle
3
Battery replacement
If the Smart Key is not working prop-
erly, try replacing the battery with a
new one.
Battery Type: CR2032
To replace the battery:
1. Pry open the rear cover of the
smart key.
2. Remove the old battery and insert
the new battery.
3. Reinstall the rear cover of the
smart key.If you suspect your smart key might
have sustained some damage, or
you feel your smart key is not work-
ing correctly, contact an authorized
HYUNDAI dealer.
Information
An inappropriately disposed
battery can be harmful to the
environment and human
health. Dispose the battery
according to your local law(s)
and regulation(s).
Immobilizer System
The immobilizer system protects your
vehicle from theft. If an improperly
coded key (or other device) is used,
the engine’s fuel system is disabled.
When the engine Start/Stop button is
in the ON position, the immobilizer
system indicator should come on
briefly, then go off. If the indicator
starts to blink, the system does not
recognize the coding of the key.
Place engine Start/Stop button to the
OFF position, then place the engine
Start/Stop button to the ON position
again.
The system may not recognize your
key’s coding if another immobilizer
key or other metal object (i.e., key
chain) is near the key. The engine
may not start because the metal may
interrupt the transponder signal from
transmitting normally.
If the system repeatedly does not
recognize the coding of the key, it is
recommended that you contact your
HYUNDAI dealer.
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3-75
Convenient features of your vehicle
3
Immobilizer Indicator
This indicator illuminates up to 30
seconds:
When the vehicle detects the
smart key in the vehicle with the
Engine Start/Stop button in the
ACC or ON position.
- You can start the vehicle.
- The indicator light goes off after
starting the vehicle.
This indicator blinks for a few sec-
onds:
When the smart key is not in the
vehicle.
- You cannot start the vehicle.
This indicator illuminates for 2 sec-
onds and goes off:
When the Smart Key is not detect-
ed inside the vehicle, when the
Engine Start/Stop button is in the
ON position.
In this case, have the vehicle
inspected by an authorized
HYUNDAI dealer.
This indicator blinks:
When the Smart Key battery is
weak.
- In this case, you cannot start the
engine. However, by pressing the
Engine Start/Stop button with the
smart key, you may start the
engine.(For more information,
refer to “Starting the Vehicle” in
the chapter 5).
When there is a malfunction with
the immobilizer system.
In this case, have the vehicle
inspected by an authorized
HYUNDAI dealer.
Automatic Transmission Shift
Indicator
This indicator displays where the auto-
matic transmission shift lever is locat-
ed.

Reverse : R
Neutral : N

Manual Shift Mode : 1, 2, 3, 4, 5, 6
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3-80
Convenient features of your vehicle
Warning messages
Shift to "P" position
This warning message is displayed
when you attempt to turn OFF the
vehicle without setting the shift lever
in P (Park).
At this time, the Engine Start/Stop
button turns to the ACC position
(When you re-press the Engine
Start/Stop button again, it will turn to
the ON position).
Low Key Battery
This warning message is displayed
when the Smart Key battery is dis-
charged while turning the Engine
Start/Stop button to the OFF position.
Press brake pedal to start engine
This warning message is displayed
when the Engine Start/Stop button
changes to the ACC position twice
by repeatedly pressing the button
without depressing the brake pedal.
You can start the vehicle by depress-
ing the brake pedalOLFH044127L
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3-122
Convenient features of your vehicle
Battery saver function
The purpose of this feature is to pre-
vent the battery from being dis-
charged. The system automatically
turns off the parking lamp when the
driver turns the engine off and opens
the driver-side door.
With this feature, the parking lamps
will turn off automatically if the driver
parks on the side of road at night.
If necessary, to keep the lamps on
when the engine is turned off, perform
the following:
1) Open the driver-side door.
2) Turn the parking lamps OFF and
ON again using the light switch on
the steering column.
Headlamp delay function
(if equipped)
If engine Start/Stop button is in the
ACC or OFF position with the head-
lamps ON, the headlamps (and/or
parking lamps) remain on for about 5
minutes. However, if the driver’s door
is opened and closed, the headlamps
are turned off after 15 seconds.
However, with the engine off if the dri-
ver’s door is opened and closed, the
headlamps (and/or parking lamps)
are turned off after 15 seconds.
The headlamps (and/or parking
lamps) can be turned off by pressing
the lock button on the smart key
twice or turning the light switch to the
OFF or AUTO position. However, if
you turn the light switch to the AUTO
position when it is dark outside, the
headlamps will not be turned off.
You can activate or deactivate the
Headlamp Delay function from the
User Settings Mode (Light) on the
LCD display.
For more information, refer to the
"LCD Display" section in this
chapter.If the driver gets out of the vehicle
through other doors (except dri-
ver’s door), the battery saver func-
tion does not operate and the
headlamp delay function does not
turn off automatically. Therefore, It
causes the battery to be dis-
charged. In this case, make sure
to turn off the lamp before getting
out of the vehicle.
NOTICE

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Convenient features of your vehicle
3
Interior Lights
Do not use the interior lights for
extended periods when the engine
is turned off or the battery will dis-
charge.
Interior lamp AUTO cut
The interior lamps will automatically
go off approximately 20 minutes after
the engine is turned off and the
doors closed. If a door is opened, the
lamp will go off 40 minutes after the
engine is turned off. If the doors are
locked by the smart key and the vehi-
cle enters the armed stage of the
theft alarm system, the lamps will go
off five seconds later.
Front lamps
(1) Front Map Lamp
(2) Front Door Lamp
(3) Front Room Lamp
NOTICE
Do not use the interior lights
when driving in the dark. The inte-
rior lights may obscure your view
and cause an accident.
WARNING
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■Type A
■Type B

4-16
Multimedia System
(Continued)
• Park the vehicle when connecting
the head unit with the mobile phone.
•Bluetooth
®connection may become
intermittently disconnected in some
mobile phones. Follow these steps to
try again.
1. Within the mobile phone, turn the
Bluetooth
®function off/on and try
again.
2. Turn the mobile phone power
Off/On and try again.
3. Completely remove the mobile
phone battery, reboot, and then
again.
4. Reboot the Audio System and try
again.
5. Delete all paired devices, pair and
try again.
• Handsfree call quality and volume
may differ depending on the model
of your mobile phone.
Information - Using the voice
recognition
• When using the voice recognition
feature, only commands listed with-
in the user's manual are supported.
• Be aware that during the operation
of the voice recognition system,
pressing any key other than the
key terminate voice recognition
mode.
• For superior voice recognition per-
formance, position the microphone
used for voice recognition above the
head of the driver’s seat and main-
tain a proper position when saying
commands.
• Within the following situations,
voice recognition may not function
properly due to external sound.
- When the windows and sunroof
are open
- When the wind of the cooling /
heating device is strong
- When entering and passing
through tunnels
(Continued)(Continued)
- When driving on rugged and
uneven roads
- During severe rain (heavy rains,
windstorms)
• Phone related voice commands can
be used only when a Bluetooth
®
Wireless Technology device is con-
nected.
• When making calls by stating a
name, the corresponding contact
must be downloaded and stored
within the audio system.
• After downloading the Bluetooth
®
Wireless Technology phone book, it
takes some times to convert the
phone book data into voice informa-
tion. During this time, voice recogni-
tion may not properly operate.
• Pronounce the voice commands nat-
urally and clearly as if in a normal
conversation.
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5-11
Driving your vehicle
5
Information
If the smart key battery is weak or the
smart key does not work correctly,
you can start the hybrid system by
pressing the Engine Start/Stop button
with the smart key in the direction of
the picture above.
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5-88
Driving your vehicle
Check battery and cables
The winter temperature increases
the battery consumption.Inspect
the battery and cables, as speci-
fied in the chapter 7.The battery
charging level can be checked by an
authorized HYUNDAI dealer or in a
service station.
Change to "winter weight" oil if
necessary
In some regions during winter, it is
recommended to use the "winter
weight" oil with lower viscosity. For
further information, refer to the chap-
ter 8. When you are not sure about a
type of winter weight oil, consult an
authorized HYUNDAI dealer.Check spark plugs and ignition
system
Inspect the spark plugs, as speci-
fied in the chapter 7.If necessary,
replace them. Also check all ignition
wirings and components for any
cracks, wear-out, and damage.
To prevent locks from freezing
To prevent the locks from being
frozen, spray approved de-icing fluid
or glycerin into key holes. When a
lock opening is already covered with
ice, spray approved de-icing fluid
over the ice to remove it. When an
internal part of a lock freezes, try to
thaw it with a heated key. Carefully
use the heated key to avoid an injury.Use approved window washer
anti-freeze solution in system
To prevent the window washer from
being frozen, add authorized window
washer anti-freeze solution, as spec-
ified on the window washer contain-
er. Window washer anti-freeze solu-
tion is available from an authorized
HYUNDAI dealer, and so are the
most vehicle accessory outlets. Do
not use engine coolant or other types
of anti-freeze solution to prevent any
damage to the vehicle paint.