99 Cabrio alarm problems

Hello,
I have a 99 cabrio. My alarm will beep 5 or 10 times every 2 hours even if I leave my doors unlocked and the car alarm off. Any ideas on what the problem is? It did this 2 years ago when I took it to the dealership, they said they coudln't find anything wrong, but the beeping stopped. Please help!

Ive been having problems with my cabrio too. When it rains and I lock the door, seconds later the alarm goes off. So anytime its raining I cant lock it. But the list goes on with my cars probs! :confused:

i will suggest you to go to workshop of your car and tell them about your problem.they will give you better solution.

The only thing, is that i have put more money then I wanted into that car. I cant afford to get it fixed. But now, it has a new problem as oh last night. It decided to not give me my car keys. I had to leave them in the ignition:runaround: I did get them out later that night once I I drove the car around.
This car is causing me grief! :banghead: