Immobilizer System; Battery Replacement - Hyundai Sonata 2016 Owner's Manual

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.
i
Information
An inappropriately disposed
battery can be harmful to the
environment
health. Dispose the battery
according to your local law(s)
and regulation(s).
OLF044008

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
and human
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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