Car alarm goes off by itself

02 mercedes c230 car alarm goes off randomly and drains the battery. help?

I guess you could totally deactivate it or find the sensor that is defective. Does it do it more when it is cold or windy?

it has only happened twice and its been in the winter but in florida winter doesn’t say much. also we want the car alarm to work so deactivating it is out of the question. should we check the sensor?