I have a 2012 Santa Fe SE V-6 awd and here's the problem...if you lock the car with the remote (which arms the alarm) and then come back and open the door with the key it sets the alarm off. You must use the remote to shut it off or the car won't start. If you lock the door with the key then you can open it with either the key or remote. The manual states that either the key or the remote will disarm the alarm but that's not the case on my car. My dealer says the alarm is working properly but what happens if you lock the car with the remote and then need to open it with just the key (like if the remote batteries go dead or the remote gets submerged in saltwater...its happened) you are screwed...and leaving the key in the run position for 30 seconds does not work either....maybe unhooking the battery for a few minutes might work but I had no tools with me at the time. Just thought someone else might want to be aware of this...it took me 1 1/2 years before it happened to me.