Hyundai Sonata: Smart key
With a smart key, you can lock or unlock a door (and trunk) and even start the engine without inserting the key.
The functions of buttons on a smart key are similar to the remote keyless entry. (Refer to the “Remote keyless entry” in this section.)
Immobilizer system
Your vehicle is equipped with an electronic engine immobilizer system to reduce
the risk of unauthorized vehicle use.
Your immobilizer system is comprised of a small transponder in the ignition key ...
Smart key functions
Carrying the smart key, you may lock and unlock the vehicle doors. Also, you
may start the engine. Refer to the following, for more details.
Locking
Using the door handle switch
Pressing ...
See also:
Power windows
The ignition switch must be in the ON position for power windows to operate.
Each door has a power window switch that controls the door's window. The driver
has a power window lock switch whic ...
Transaxle Control Module (TCM). Repair procedures
Replacement
In the case of the vehicle equipped with immobilizer
or button engine start system, perform "Key Teaching&quo ...
Body Repair
Interior A
Interior B
Interior C
Interior D
...
