2015 Hyundai Sonata Hybrid key battery

Features of your vehicle
64
Restrictions in handling keys
When leaving keys with parking lot and
valet attendants, the following proce-
dures will ensure that your vehicle’s trunk
and glove box compartment can only be
opened with the mechanical key.
Lock
Remove the mechanical key from the
smart key and leave the smart key with
the attendant. In this manner the smart
key can only be used to start the hybrid
system and operate door locks.
Trunk
1. Open the trunk lid.
2. Set the trunk lid control switch toLOCK position ( ).
3. Close the trunk lid.
Glove box
Lock the glove box using the mechanical
key.
Lock release
Trunk
1. Unlock doors by using the smart key and unlock the trunk lid with the
mechanical key.
2. Set the trunk lid control switch to UNLOCK ( ).
3. Close the trunk lid.
In this position the trunk will open with
the trunk lid release button or smart key.
Glove box
Unlock the glove box using the mechani-
cal key.
Battery replacement
A smart key battery should last for sever-
al years. If the smart key is not working
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 authorized HYUNDAI dealer.
1. Insert a slim tool into the opening and gently 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 position.
3. Install the battery cover in the reverse order of removal.
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47
Features of your vehicle
Immobilizer system
Your vehicle is equipped with an electron-
ic engine immobilizer system to reduce
the risk of unauthorized vehicle use.
Your immobilizer system is comprised of
a small transponder in the smart key and
electronic devices inside the vehicle.
With the immobilizer system, whenever
you turn the engine start/stop button to
the ON position by pressing the button
while carrying the smart key, it checks
and determines and verifies if the smart
key is valid or not.
If the key is determined to be valid, the
engine will start.
If the key is determined to be invalid, the
engine will not start.
To deactivate the immobilizer sys-tem:
Turn the engine start/stop button to the
ON position by pressing the button while
carrying the smart key.
To activate the immobilizer system:
Turn the engine start/stop button to the
OFF position. The immobilizer system
activates automatically. Without a valid
smart key for your vehicle, the engine will
not start.
CAUTION
The smart key is designed to give you years of trouble-free use,however it can malfunction ifexposed to moisture or staticelectricity. If you are unsure how to use or replace the battery, con-tact an authorized HYUNDAI deal-er.
Using the wrong battery can cause the smart key to malfunc-tion. Be sure to use the correctbattery.
To avoid damaging the smart key, don't drop it, get it wet, or exposeit to heat or sunlight.
An inappropriately disposed bat- tery can be harmful to the envi-ronment and human health.
Dispose the battery according toyour local law(s) or regulation.
CAUTION
In order to prevent theft of yourvehicle, do not leave spare keys anywhere in your vehicle. YourImmobilizer password is a customer unique password and should bekept confidential. Do not leave this number anywhere in your vehicle.

459
Features of your vehicle
If the battery in the Smart Key remoteis weak, the engine may not start when
you push the start/stop button (and the
indicator will flash). Place the smart
key into the smart key holder in the
center console. If the vehicle now
starts nor mally, replace the battery
inside the smart key fob. If the indicator
still flashes, the system may need
repair. Contact an authorized HYUNDAI
dealer for assistance.Low fuel level warning light
This warning light indicates the fuel tank
is nearly empty. When it comes on, you
should add fuel as soon as possible.
Driving with the fuel level warning light on
or with the fuel level below “E” can cause
the engine to misfire and damage the
catalytic converter.
Engine coolant temperature warning light(if equipped)
The warning light illuminates if the tem-
perature of the engine coolant is above
257±4.5°F (125±2.5°C).
Do not continue driving with an overheat-
ed engine. If your vehicle overheats, refer
to “Overheating” in Chapter 6.
Malfunction indicator light(MIL) (check engine light)
This indicator light is part of the Engine
Control System which monitors various
emission control system components. If
this light illuminates while driving, it indi-
cates that a potential malfunction has
been detected somewhere in the emis-
sion control system.
This light will also illuminate when the
engine start/stop button is in the ON
position, and will go out in a few seconds
after the engine is started. If it illuminates
while driving, or does not illuminate when
the engine start/stop button is in the ON
position, take your vehicle to your near-
est authorized HYUNDAI dealer and
have the system checked.
Generally, your vehicle will continue to be
drivable, but have the system checked by
an authorized HYUNDAI dealer promptly.

463
Features of your vehicle
Low key battery
When the smart key in the vehicle dis-
charges, the warning illuminates on the
LCD screen for 10 seconds.
Replace the battery with a new one. If it
is not possible, you can start the engine
by inserting the smart key into the smart
key holder and pushing the engine
start/stop button.
Press brake pedal to start engine
If the engine start/stop button turns to the
ACC position twice by pushing the
engine start/stop button repeatedly with-
out pressing the brake pedal, the warn-
ing illuminates on the LCD screen for 10
seconds to indicate that you should
press the brake pedal to start the engine.
Shift to "P"
If you push the engine start/stop button
with the engine start/stop button ON and
the shift lever not in P(Park), the warning
illuminates on the LCD screen for 10 sec-
onds to indicate that you should press
the engine start/stop button with the shift
lever in P(Park) to turn off the engine.
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471
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 lights when the
driver turns off the hybrid system and
opens the driver-side door.
With this feature, the parking lights will be turned off automatically if the driver
parks on the side of the road at night.
If necessary, to keep the lights on
when the vehicle is off, perform the fol-
lowing:
1) Open the driver-side door.
2) Turn the parking lights OFF and ON again using the light switch on the
steering column.
Headlamp delay (if equipped)
If you press the engine start/stop button
to the ACC or OFF position with the
headlights ON, the headlights (and/or tail
lights) remain on for about 5 minutes.
However, if the driver’s door is opened
and closed, the headlights are turned off
after 15 seconds.
The headlights 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
headlights will not be turned off.
Headlamp welcome function
When the headlight switch is in the ON or
AUTO position and all doors (and trunk)
are closed and locked, if you press the
door unlock button on the smart key, the
headlights will come on for about 15 sec-
onds. At this time, if you press the door
lock button on the smart key, the head-
lights will turn off immediately.
Daytime running light
(if equipped)
Daytime Running Lights (DRL) can make
it easier for others to see the front of your
vehicle during the day. DRL can be help-
ful in many different driving conditions,
and it is especially helpful after dawn and
before sunset.
The DRL system will turn OFF when:
1. The headlight is ON.
2. Engine stops.
3. If the multifunction switch is on “DRL
OFF” position.
4. Parking brake ON.
LIGHTING
CAUTION
If the driver gets out of the vehicle through other doors, the batterysaver function does not operate.Therefore, it causes the battery tobe discharged. In this case, make sure to turn off the lamp before get-ting out of the vehicle.

Features of your vehicle
78
4
Map lamp
Type A
Push the lens to turn the map lamp on or
off. This light produces a spot beam for
convenient use as a map lamp at night or
as a personal lamp for the driver and the
front passenger.
In the DOOR position, the map lamp and
the room lamp come on when any door is
opened regardless of the engine
start/stop button position.
When doors are unlocked by the smart
key, the map lamp and the room lamp
come on for approximately 30 seconds
as long as any door is not open. The map
lamp and the room lamp goes out gradu-
ally after approximately 30 seconds if the
door is closed. However, if the engine
start/stop button is ON or all doors are
locked, the map lamp and the room lamp
will turn off immediately. If a door is
opened with the engine start/stop button
in the ACC or LOCK position, the map
lamp and the room lamp stay on for
about 20 minutes. However, if a door is
opened with the engine start/stop button
in the ON position, the map lamp and the
room lamp stay on continuously.

The light stays on at all times.

The lights turn off even if a door is
opened.
❈
When the lamp is turned ON by press-
ing the lens (1) the lamp does not turn
off even if the switch (2) is in the OFF
position.
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INTERIOR LIGHT
CAUTION
Do not use the interior lights for
extended periods when the engineis not running.
It may cause battery discharge.
WARNING
Do not use the interior lights when
driving in the dark. Accidents could
happen because the view may be
obscured by interior lights.

Features of your vehicle
166
4
✽
✽
NOTICE - USING THE
iPod®DEVICE
• iPod®is a registered trademark of
Apple Inc.
• In order to use the iPod
®while
operating the keys, you must use a
dedicated iPod
®cable. (the cable
that is supplied when purchasing
iPod
®/iPhone®products)
• If the iPod®is connected to the
vehicle while it is playing, a high
pitch sound could occur for approx-
imately 1-2 seconds immediately
after connecting. If possible, con-
nect the iPod to the vehicle with the
iPod
®stopped/paused.
• During ACC ON state, connecting the iPod
®through the iPod®cable
will charge the iPod®through the
car audio system.
• When connecting with the iPod
®
cable, make sure to fully insert the
jack to prevent communication
interference. (Continued)(Continued)
• When the EQ features of an exter-
nal device, such as the iPod
®, and
the audio system are both active,
EQ effects could overlap and cause
sound deterioration and distortion.
Whenever possible, turn off the EQ
feature within the external device
upon use by connecting with the
audio system.
• Noise may occur when an iPod
®or
AUX device is connected. When
such devices are not being used, dis-
connect the device for storage.
• When the iPod
®or AUX device
power is connected to the power
jack, playing the external device
may result in noise. In such cases,
disconnect the power connection
before use.
• Skipping or improper operation may occur depending on the char-
acteristics of your iPod
® /Phone®
device. (Continued)(Continued)
• If your iPhone
®is connected to
both the Bluetooth®Wireless
Technology and USB, the sound
may not be properly played. In
your iPhone
®, select the Dock con-
nector or Bluetooth®Wireless
Technology to change the sound
output (source).
• iPod mode cannot be operated when the iPod
®cannot be recog-
nized due to versions that do not
support communication protocols.
• For fifth generation iPod
®Nano
devices, the iPod®may not be rec-
ognized when the battery level is
low. Please charge the iPod
®for
use.
• Search/play orders shown within the iPod
®device may differ with the
orders shown within the audio sys-
tem.
• If the iPod
®malfunctions due to an
iPod®device defect, reset the iPod®
and try again. (To learn more, refer
to your iPod®manual)
(Continued)

4235
Features of your vehicle
✽
✽NOTICE - USING THE
iPod®DEVICE
• iPod®is a registered trademark of
Apple Inc.
• In order to use the iPod
®while
operating the keys, you must use a
dedicated iPod
®cable. (the cable
that is supplied when purchasing
iPod
®/iPhone®products)
• If the iPod®is connected to the
vehicle while it is playing, a high
pitch sound could occur for approx-
imately 1-2 seconds immediately
after connecting. If possible, con-
nect the iPod to the vehicle with the
iPod
®stopped/paused.
• During ACC ON state, connecting the iPod
®through the iPod®cable
will charge the iPod®through the
car audio system.
• When connecting with the iPod
®
cable, make sure to fully insert the
jack to prevent communication
interference. (Continued)(Continued)
• When the EQ features of an exter-
nal device, such as the iPod
®, and
the audio system are both active,
EQ effects could overlap and cause
sound deterioration and distortion.
Whenever possible, turn off the EQ
feature within the external device
upon use by connecting with the
audio system.
• Noise may occur when an iPod
®or
AUX device is connected. When
such devices are not being used, dis-
connect the device for storage.
• When the iPod
®or AUX device
power is connected to the power
jack, playing the external device
may result in noise. In such cases,
disconnect the power connection
before use.
• Skipping or improper operation may occur depending on the char-
acteristics of your iPod
® /Phone®
device. (Continued)(Continued)
• If your iPhone
®is connected to
both the Bluetooth®Wireless
Technology and USB, the sound
may not be properly played. In
your iPhone
®, select the Dock con-
nector or Bluetooth®Wireless
Technology to change the sound
output (source).
• iPod mode cannot be operated when the iPod
®cannot be recog-
nized due to versions that do not
support communication protocols.
• For fifth generation iPod
®Nano
devices, the iPod®may not be rec-
ognized when the battery level is
low. Please charge the iPod
®for
use.
• Search/play orders shown within the iPod
®device may differ with the
orders shown within the audio sys-
tem.
• If the iPod
®malfunctions due to an
iPod®device defect, reset the iPod®
and try again. (To learn more, refer
to your iPod®manual)
(Continued)