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Thread: Alarm going off for no reason?

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    Newbie thesober's Avatar
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    Default Alarm going off for no reason?

    Anyone have issues with the alarm going off for no reason? My car's alarm has gone off 2 times last night, so i thought someone wanted to get in. Nope, this morning, it went off again for no reason. It can't be the wind causing this. I tried rocking the car to set it off, nothing happened. My car is completely stock, no aftermarket electrical of any kind.

    Any ideas?
    05 MZ3 GT GFX

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    Sr Member Dave_The_BMXER's Avatar
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    Default Re: Alarm going off for no reason?

    Is it going of normal or one consistent tone?

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    Sr Member Fuman's Avatar
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    Default Re: Alarm going off for no reason?

    sub.
    it happens to me too. I've no idea why either

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    Sr Member JonsMazda's Avatar
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    Default Re: Alarm going off for no reason?

    Your car is trying to communicate with you lol. But yea, this happened to me also when I was down in Montreal, I just reset the ecu. Never alarmed by itself anymore, not sure if it fixes the issue but it did for me.

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    Moderator cwp_sedan's Avatar
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    Default Re: Alarm going off for no reason?

    Do you have a mazda remote start? Did you have a shock sensor installed with mazda at any time?

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    Newbie thesober's Avatar
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    Default Re: Alarm going off for no reason?

    Only thing I had done was the Door recall that strengthened the door. Was a shock sensor part of that too, because if it was, I was never able to trip it by rocking the car.

    Strange, I think i'll just unplug the battery and have it reset to see if it fixes the issue.

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    Moderator cwp_sedan's Avatar
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    Default Re: Alarm going off for no reason?

    Quote Originally Posted by thesober View Post
    Only thing I had done was the Door recall that strengthened the door. Was a shock sensor part of that too, because if it was, I was never able to trip it by rocking the car.

    Strange, I think i'll just unplug the battery and have it reset to see if it fixes the issue.
    There were times when they did install them for some people when that recall was done. If it hasn't done this before I wouldn't assume it's the shock sensor if you "do" have one.

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    Sr Member Donutz's Avatar
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    Default Re: Alarm going off for no reason?

    It's the factory alarm correct? I have the compustar, last year my hood pin corroded causing my alarm to go off.
    Is not here

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    Default Re: Alarm going off for no reason?

    Yup, factory alarm. I disconnected the battery and reset the ECU. Hopefully it won't go off tonight.

    Can a weak battery cause these types of oddities? (not sure if mine is weak or not) I'm still running on the original one and its my next thing to do with the car.

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    Default Re: Alarm going off for no reason?

    disconnecting/reconnecting the battery wouldn't cause the stock alarm to go off if that's what you're asking

    however, if the shock sensor (part of recall) or the remote start's (mazda one) shock sensor is flaking out, then it could be doing this
    2005 Mazda3 SP23 hatchback (auto)

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    Default Re: Alarm going off for no reason?

    Welp, resetting the ECU didnt work, car went off 4 times yesterday, no shock sensor either.(i checked my invoice with the door recall) Does anyone know how to disable the alarm? I checked the fuses thinking i can just pull the alarm fuse, but that slot was empty to begin with. Ah well, I think i'll have to bring it in.

    Can anyone recommend a place that can diagnose this? Or does anyone know how to disable it? I just need to be able to lock the doors and not worry about it going off in the middle of the night.

    Im not worried about it getting broken into, the thing probably wouldnt even go off anyways!

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    Sr Member Dave_The_BMXER's Avatar
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    Default Re: Alarm going off for no reason?

    Quote Originally Posted by Dave_The_BMXER View Post
    Is it going of normal or one consistent tone?
    You never answered this...

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    Default Re: Alarm going off for no reason?

    Quote Originally Posted by Dave_The_BMXER View Post
    You never answered this...
    oh sorry, it's the same sound and actions as if you pressed the panic button.

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    Sr Member JonsMazda's Avatar
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    Default Re: Alarm going off for no reason?

    Hmm, maybe something wrong with ur panick button function, try taking the battery out and not putting it back for awhile

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    Sr Member Dave_The_BMXER's Avatar
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    Default Re: Alarm going off for no reason?

    Quote Originally Posted by thesober View Post
    oh sorry, it's the same sound and actions as if you pressed the panic button.
    Ok then your problem is not the same as mine... be thankful!

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    Jr Member MRT_MS3's Avatar
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    Default Re: Alarm going off for no reason?

    My bet is a corroded/bad door pin.
    2008.5 CWP MS3


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    Default Re: Alarm going off for no reason?

    So, was the problem ever solved. My son left his 2005 Mazda3 with me when he went away and the alarm is going off 2 to 3 times a day.

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    Default Re: Alarm going off for no reason?

    Quote Originally Posted by aharonpow View Post
    So, was the problem ever solved. My son left his 2005 Mazda3 with me when he went away and the alarm is going off 2 to 3 times a day.
    Does your sons car have the stock alarm or an aftermarket alarm?

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    Default Re: Alarm going off for no reason?

    Quote Originally Posted by cwp_sedan View Post
    Does your sons car have the stock alarm or an aftermarket alarm?
    He has the stock alarm.

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    Exclamation Re: Alarm going off for no reason?

    Help!

    Anyone figure this out? Mine started going off on it's own as well.
    Worried my neighbours will soon take a shotgun to the car.

    It's started last week and can't figure out what's causing it.

    I've got the '04 GT GFX sedan, completely stock, I don't even think I have the shock sensor unless it already came with the alarm.

    Does anyone know how to disable the alarm in the meantime??

    Thanks!
    Ray

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    Default Re: Alarm going off for no reason?

    Just to give an update: I never figured it out but once I changed the battery, it never happened again ?!?!?!? strange indeed.

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    Default Re: Alarm going off for no reason?

    Thanks for the update... I wonder if it's as simple as that.

    gotta find my second key fob and test that one out.

    thanks!

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    Default Re: Alarm going off for no reason?

    Not the key fob battery, the car battery.

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    Default Re: Alarm going off for no reason?

    Ahhh...
    haha thanks. That maybe what I need... I haven't done that yet.

    Thank you Mr. Sober lol

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    Default Re: Alarm going off for no reason?

    Still having trouble with this, haven't had a chance to change out the car battery yet though.

    Does anyone know how to disable the alarm? i'm worried it's going to drive my neighbours nuts.

    And someone please remind me, when I lock the car key fob or not, does the alarm automatically arm itself??
    or is that only when i press the keyfob the second time?

    Is there a way to lock the car without the being alarm set/armed?

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