Car Alarm

[SuperCoupe400]

Okay, now I'm just baffled

I went to go unlock my trunk (from the outside with the factory theft deterant system still armed) and my horn starts honking. And it didn't stop until I unlocked the car with the disarm button on the keypad. This same thing has happened only one other time in the 2 1/2 years I've had this car - about 2 years ago, under the exact same circumstances. But I go in my trunk before disarming the car every single day. I did absolutely nothing different than usual.

I thought our cars didn't come with audible alarms - only the theft deterant ignition kill. There is no aftermarket alarm on the car - at least I've never seen any extra electronics under the hood or under the dash to indicate such.

So I'm just wondering if this has happened to anybody else.

[jzz30]

something similar happens in my LS. if you leave the door unlocked for a period of time and open the door, the alarm goes off. this is very random and doesnt always happen.