
If your alarm has a backup battery at me and in fact still keep going but only for a short period of time. Make sure you’ve got gloves and pliers or wrench to loosen the nut and remove the negative terminal. When all else fails, you may have to just disconnect the battery in your car. I eventually pulled the two fuses.Alarm Keeps Going Off. I then pulled into my quiet neighborhood and parked in the driveway and it kept randomly going off. liz8487 said: So on my way home today my horn kept randomly honking long and loud. The first morning, a few security guards were already scrambling to warn drivers not to accidentally drive off the brink.Premium Member. Only dawn revealed the true nature of our predicament. They said trees outside were being toppled. It happened sometime before dawn, when the night shift reported a strong wind blowing. In this article we will look in detail at what sets off a car alarm, why an alarm would keep going off for no reason, and what you can do about it.

The most common reasons that a car alarm would keep going off are: Faulty hood latch or door sensors.

Anyway, a few measurements with the voltmeter over the next few days confirmed the battery appeared to be heading south (wouldn't hold at 12.8v) and when it would get down to about 12.2, the horn would go off and lights. in the middle of the night, horn would be going off with the lights flashing.
