2018 Hyundai Sonata change key battery

3-7
Convenient features of your vehicle
Information
This device complies with Part 15 of
the FCC rules.
Operation is subject to the following
three conditions:
1. This device may not cause harmfulinterference, and
2. This device must accept any interfer- ence received, including interference
that may cause undesired operation.
3. Changes or modifications not expressly approved by the party
responsible for compliance could
void the user's authority to operate
the device.
Keep the remote key away from
electromagnetic materials that
blocks electromagnetic waves to
the key surface.
Battery replacement
If the remote 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 remote key.
2. Remove the old battery and insert the new battery. Make sure the
battery position is correct.
3. Reinstall the rear cover of the remote key. If you suspect your remote key might
have sustained some damage, or
you feel your remote 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.
i
NOTICE
i
3
OLM042302

3-80
Warning messages
(if equipped)
Shift to P(for smart key system and auto-matic transaxle)
This warning message illuminates
if you try to turn off the engine with-
out the shift lever in P (Park) posi-
tion.
At this time, the Engine Start/Stop button turns to the ACC position (If
you press the Engine Start/Stop
button once more, it will turn to the
ON position).
Low Key Battery (for smart key system)
This warning message illuminates
if the battery of the smart key is
discharged when the Engine
Start/Stop button changes to the
OFF position.
Press START button while turning wheel (for smart key system)
This warning message illuminates
if the steering wheel does not
unlock normally when the Engine
Start/Stop button is pressed.
It means that you should press the Engine Start/Stop button while
turning the steering wheel right
and left.
Steering wheel not locked (for smart key system)
This warning message illuminates
if the steering wheel does not lock
when the Engine Start/Stop button
changes to the OFF position.
Check steering wheel lock system (for smart key system)
This warning message illuminates
if the steering wheel does not lock
normally when the Engine Start/
Stop button changes to the OFF
position.
Press brake pedal to startengine (for smart key systemand automatic transaxle)
This warning message illuminates
if the Engine Start/Stop button
changes to the ACC position twice
by pressing the button repeatedly
without depressing the brake
pedal.
It means that you should depress the brake pedal to start the engine.
Key not in vehicle(for smart key system)
This warning message illuminates
if the smart key is not in the vehicle
when you press the Engine Start/
Stop button.
It means that you always have the smart key with you.
Key not detected (for smart key system)
This warning message illuminates
if the smart key is not detected
when you press the Engine Start/
Stop button.
Convenient features of your vehicle

I-2
Accessing your vehicle .....................................................3-4Immobilizer System ...................................................3-12
Remote Key ..................................................................3-4
Smart Key.....................................................................3-8\
Air Bag - Advanced Supplemental Restraint System.....2-45 Additional Safety Precautions ....................................2-67
Air Bag Warning Labels.............................................2-68
How Does the Air Bag System Operate? ...................2-51
Occupant Classification System (OCS) .....................2-56
SRS Care ....................................................................2-66\
What to Expect After an Air Bag Inflates ..................2-55
Where Are the Air Bags? ...........................................2-47
Why Didn't My Air Bag Go Off in a Collision? (Air bags are not designed to inflate in
every collision.).......................................................2-61
Air Cleaner......................................................................7-\
31 Filter Replacement .....................................................7-31
Air Conditioning System ..................................................8-6
Appearance Care .............................................................7-77 Exterior Care ..............................................................7-77
Interior Care ...............................................................7-82
Automatic climate control system ................................3-132 Automatic Heating and Air Conditioning ................3-133
Manual heating and Air Conditioning......................3-134
System Maintenance ................................................3-142
System Operation .....................................................3-140 Automatic emergency braking (AEB) ............................5-97
AEB warning message and system control................5-99
Limitation of the system ..........................................5-105
Sensor to detect the distance from the vehicle in front (front radar) ..............................................5-102
System malfunction ..................................................5-103
System setting and activation .....................................5-97
Battery ........................................................................\
.....7-37 Battery Recharging .....................................................7-38
For Best Battery Service ............................................7-38
Reset features .............................................................7-39
Before Driving ..................................................................5-4 Before Entering the Vehicle .........................................5-4
Before Starting .............................................................5-4
Blind Spot Detection System (BSD) ..............................5-89 BSD (Blind Spot Detection) / LCA (Lane Change Assist) .....................................5-90
RCTA (Rear Cross Traffic Alert) ...............................5-93
Brake Fluid .....................................................................7-2\
9 Checking the Brake Fluid Level ................................7-29
Index
A
B