I have had this problem for many years and the dealer could not figure it out. Alarm goes off at times and is specially annoying when it occurs late night. I have been disabling by using car key to open and then relock the door when I leave the car behind. Does anybody else have this issue and ideas to fix?
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Have the dealer keep the car and run a scan test on the security system while this alarm issue is occurring, then they can pinpoint the cause of the false activation of the system. That problem will likely be one of the door latch sensors is failing.
Assuming that you have the dealer installed PRESTIGE alarm unit,I would recommend decreasing the sensitivity of the motion sensor, or replacing the alarm control unit. This black plastic
piece, located somewhere in the left kicker panel not only handles the
sound/motion alarm, but the flashing alarm, the keyless power locks and the
theft code for the radio. It is rare that these boxes fail, more than
likely a rusty sensor at the doors, trunk or hood will be the culprit.
Mine goes off when cats go under the car, and cant figure why. I am making
a decision on fixing the alarm, or fixing the cats.
take it back to mazda and get it looked at.
mine is the same goes off for no reason when i lock the car mazda do not know what is causing the problem but get your name down on the list for the parts when they do work it out because by the sounds of it every mazda 2 is going to have to have the alarm fixed when they solve the problem
there is a hood switch located at front passenger side under hood. check to make sure the plunger at hood is pushing the switch completely down. sometimes there may be just enough clearance that a strong wind will set the alarm off.
This car has a feature that can automatically lock your doors after you leave your car unlocked for a period of time – this can be turned off. I had the dealer do it but I am sure if you check the manual it can show you how to do it yourself. The alarm and locks on this car are very sensitive and often break so if this problem isn't resolved by deactivating the auto lock then I would have a mechanic look into it.
First check your battery and connections.There are two alarm units , your dealer will be able to read the fault codes and advise you on what to do.I don't think it's wise to expose the security of your vehicle on line.