The alarm randomly goes off. - 2002 Mercury Mountaineer

https://www.justanswer.com/ford/9x920-1998-ford-taurus-alarm-going-off-randomly.html

I would suggest resetting ECU or going to dealership.

The alarm tripping is often caused by a bad door or hood switch. Since the hood switch is always exposed to water and corrosion, that one usually goes bad first. Check that out. And no, you can't disable it.

Factory system or added on?

are you sure its part of the factory system?

The alarm system has a sensitivity control and it needs to be turned down. This cannot be a factory alarm system?

I had an issue with an Aveo that would do the same thing... what I did to correct that problem was to diagnose all the alarm switch's.

I took all door switch off inspected them they looked fine I then check the hood switch and when I took it off I noticed it was corroded inside since I changed it the alarm never came on again.

I would check your hood switch it maybe the same.

Good luck

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.

Seems like a problem with the Alarm. First disconnect the Alarm and if problem still persists then will have to trace step by step for a loose connection or relay malfunction.

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