Auto alarm problem help

I have a raiton auto alarm system in my car. Now, my problem is that the water was passing by the vehicle while it was interesting, it did not sound like a normal operation or the door opening and closing sound. After that, the alarm does not activate, sometimes it does not lock the door automatically when it enters. What happened can you help me

I had a problem like that before, I changed the alarm battery and it got better

[QUOTE = mcanhapci99] I had a problem with me before, I changed the alarm battery has improved [/ QUOTE]

Where exactly is this battery