Immobilizer System - Hyundai i20 Owner's Manual

Convenient features
Battery replacement
If the Smart Key is not working properly,
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. Make sure the battery
position is correct.
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 working
correctly, it is recommended that you
contact an authorized HYUNDAI dealer.
Information
i
An inappropriately disposed
battery can be harmful to the
environment and human
health. Dispose the battery
according to your local law(s)
and regulation.
6-12

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 ignition switch is placed 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 the ignition switch to the LOCK/
OLF044008 OLF044008
OFF position, then place the ignition
switch 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.
Do not attempt to alter this system
or add other devices to it. Electrical
problems could result that may make
your vehicle inoperable.