See also:

Keys
For greater convenience, the same key operates all the locks in your Hyundai. However, because the doors can be locked without a key, carrying a spare key is recommended in case you accidentally ...

Check Spark Plugs and Ignition System
Inspect your spark plugs and replace them if necessary. Also check all ignition wiring and components to be sure they are not cracked, worn or damaged in any way. ...

Opening the trunk with the alarm armed (if equipped)
When the alarm is armed, the alarm will not sound if the trunk lid is opened with the transmitter (or smart key). Once the trunk is opened and then closed, the trunk will be locked automatically a ...