Hello There!

I have just purchased a Chrysler Sebring 2007. I normally lock the car with the button on the key. The problem is that the alarm starts randomly.
First I checked that there was no external factor to it. I left it by my window and I was looking at it. and some 20 minutes after the alarm started beeping. I opened the car with the key and the alarm stopped, then I closed it again and the same situation happened afterwards.

I finally decided to leave the car unlocked so me and my neighbours could sleep.

Recently I noticed that if I manually close the four doors, instead of using the keys, the alarm won't go off. But that is a bit of a pain in the bum.

Anyone had the same issue?