Hyundai Repair: 2000 Elantra Alarm, hyundai emblem, hyundai logo

Question
Yes it was installed by the detailer. The remote entry has the Hyundai emblem on it so it must be a standard alarm for that year. The one thing that I am afraid of now is with the alarm light constantly on that one day I will be driving down the road and the alarm will go off and I will not be able to pull over and disconnect the battery. Do you have any suggestions why the alarm light would stay on? I have tried using the remote entry (both of them) but it does nothing. The battery draining has me puzzled too. The last time I had to get a jump, I just finished driving for over 30 minutes and was only in the store for less than 10 minutes and when I came out it was 100% dead, not even enough to get a ceiling light glimpse. Thanks for all the help
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Followup To

Question -
I noticed this morning that my alarm light on the dash was on. I have not used the alarm in the car for the past 5 years, ever since the remote entry did not lock the doors anymore. I found the remote entry controlls and tried to turn it off with no luck. When I opened the door it went off, for a second then it would stop for few seconds then come back on. I disconnected the battery to make it stop. When I reconnect the battery the alarm did not come back on, but the light on the dash is still on.

Is there a way to disconnect the alarm all together. I believe that the alarm is draining my battery, because in the past month I have stopped by the local store for a minute and when I come out my battery is completely dead and I have to get a jump.

Any help is greatly appreciated. Thank You

Answer -
I'll need to know what alarms system you have in this vehicle.  None of the 2000 Elantras came from the factory with alarms, but some were Hyundai accessories added at the dealer or port of entry.  If your remote doesn't say "Hyundai" or have the Hyundai logo on it, it's not a Hyundai alarm system.  Most alarm systems will turn off if you disconnect the battery and reconnect it while the key is on.

Before you look too far into the alarm draining the battery, you should probably look at the battery and charging system.  Draining the battery is something that happens over time.  Stopping in a store for a minute and coming back out doesn't sound like it's long enough for something like this to happen.  Typically it'd require sitting overnight or a similar amount of time.

If you decide to take the alarm out, you can do so, but you may need to piece some of the ignition wiring back together.  These are often cut and the alarm spliced in to provide a means to interrupt the starter and ignition.

Answer
If the LED is on constantly, that should indicate that the alarm is in valet mode (not armed).  As long as you don't get any signs that the system is arming, I think it's okay to presume it's off while the LED is on steady.  

If you've got some evidence that there's an actual alarm problem, you may want to get a free account at www.hmawervice.com (requires internet explorer).  There's a very nice technical service bulletin (02-90-009) which gives much more diagnostic and programming information about the alarm systems than I can give here in this response.  In fact, you may want to just nose around the site a little.  You can research TSBs, look at the shop manual, see the schematics, and print any of them for your use.  

As for the problem with your battery, it sounds most likely that you need a battery.  If you've got a voltmeter, check battery voltage with the engine running.  If it's between 13.5 and 15.5 Volts, your alternator is probably fine.