02 Elantra alarm goes off on its own

Discussion in 'Hyundai Elantra / Lantra' started by Mark Rathgeber, Jan 15, 2008.

  1. The header line says it all. My daughter's 02 Elantra over the last
    few days has taken to sounding its alarm for no apparent reason.
    Obviously, I have no idea what the heck is going on. From reading
    some other posts, I've learned that the hood not closing completely
    might be the culprit. I'm asking if anyone else has any ideas what to
    check next. As a last resort, can the alarm be disabled without
    disabling any other essential functions, such as door locks, starting,
    etc? Of course, she lets me know about this at 10:40 PM, just as I'm
    about to go to bed, and she acts like it's my problem because I
    haven't yet fixed it. Aren't teenagers great?
    Mark Rathgeber, Jan 15, 2008

  2. My '07 Sonata did the same thing right after I bought it. The easiest
    fix is to remove the wiring harness from the switch that tells the
    system whether the hood is open or closed. Mine was on the right fender,
    near the edge of the hood; not sure where it is on an Elantra.

    Larry Harvilla
    e-mail: larry AT phatpage DOT org
    blog-aliciousness: http://www.phatpage.org/news/

    Highways section still in progress at http://www.phatpage.org/highways.html
    Larry Harvilla, Jan 15, 2008
  3. Mine ('01 Elantra) was because of a bent hood. I took a rubber stopper
    and hollowed out a thin hole so I could slide it over the switch, so
    that the hood would still close it.

    I think the http://www.hmaservice.com/ manuals will list all the
    sensors, and you can fiddle with them to figure out which one is bad.
    Matthew Fedder, Jan 16, 2008
  4. Mark Rathgeber

    Vineeth Guest

    A neighbors 2007 Sonata had a similar problem & upon investigation it
    had to do with a wire short circuiting in the space around the
    steering column. I think it was this forum which pointed us in the
    right direction...
    Vineeth, Jan 19, 2008
  5. Mark Rathgeber

    hyundaitech Guest

    If you don't lock the car with the remote, the alarm will not arm.
    hyundaitech, Jan 20, 2008
  6. Mark Rathgeber

    Tom Guest

    It sounds like a very common problem with the VW Jettas. I finally disarmed
    the whole stupid, over engineered system. Not the right solution if you
    want an alarm...................
    Tom, Jan 21, 2008
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