Question about 2001 Hyundai Elantra

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2005 Hyundia Elantra alarm goes off for no real reason

For some reason I can not figure out my car's alarm started going off today. It would go off for about a minute or two at a time and then do it again about every two minutes. I opened and closed all the doors, the hood, and the trunk - which seems to have made the alarm stop going off for now, however this created a new problem. Although I can still lock my doors using the key remote, I can no longer "engadge" the alarm. It supossed to be that you hit the lock button once to lock it, and then a second time to set the alarm. The car used to let out a friendly little "chirp" to let me know the alarm was set, but now refuses. Please help!!

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  • bella8689 Jan 02, 2009

    Thank you for trying to help me. I really do appreciate it. However, a few months ago the alarm kept going off for no reason, and then the car wouldn't start. We ended up jumping it to get it to the auto store and replaced the battery. Is it actually possible that my battery is going bad again so soon? Also, a few days ago the check engine light was on and when we checked the codes, it was a bad O2 censor. Now I haven't replaced that yet. Could that have anything to do with it?

  • bella8689 Jan 06, 2009

    So I had a friend check out the battery and tighten everything up on it. He said he didn't see any signs of corrosion, but magically after everything was tightened, my prpblems stopped. You're a genius! Thank you so much for all your help!

  • Anonymous Mar 17, 2014

    2014 Ford Escape alarm goes off 9 1/2 minutes to 10 minutes after arming. It will stop with remote then everything is ok until the next time I set the alarm.

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When a battery starts to go bad it will set the alarm off constantly. Check the date on your battery and if it's between 3 and 4 years old most likely this is the cause. I had it happen before.

Posted on Jan 02, 2009

  • Michael Sharar Jan 03, 2009

    check the terminals and make sure that there isn't any corrosion. Your battery is probably a side mount and you'll get corrosion under them also. Second check and make sure that both terminals are tight. They have a tendancy to loosen every now and then. Third, I've never heard of a O2 sensor causing that type of problem but I'd get it changed anyways. Atleast you can improve the gas mileage and it will make the vehicle run better. I've replaced batteries that I installed new at work and had to replace them even before a year had gone bye. Let me know what ya find.

  • Michael Sharar Jan 06, 2009

    No problem, glad I could be some help.

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