look at the antenna ( usually next to rear mirror, or high up by the windshield, it should indicate a model number, with that go to internet to search, you can find it out an alarm system using same type of transmiter to match it. ) Z& Y1 |6 ]1 K; a# _! K+ d4 WDepends on how many function, one way or 2 ways etc.3 m5 F; g+ C, j7 z, v4 o
Do you remember the style and look of the one you lost ?