i have just bought a 318i se and have a remote with it but dont know what its for it has 2 buttons 1 which says on/off the other 1 the writing has faded. i have been reading through some of the forum and as far as i can tell it has an alarm. when i press the on/off buttons i hear a click from the front of the car a few secs later it clicks again when i press the other button nothing happens can someone help me please ???????????