Keyless Entry

Hey guys, Im new to the board here. Lookin for a good forum for avise on my bimmer. I recently purchased a 318ti. When I arm and disarm the the car it doesnt chirp. I know there is a way to set it up to do so, but unfortuantely my car didnt come with a manual. Im hopin somebody on here can help me out. I know it sounds stupid, but thanks in advance.:confused:

hold down lock and unlock button at same time for 2 seconds I believe.