if you have 5 buttons above the drivers door with numbers on them...0+1,2+3,4+5,6+7,8+9 on them...thats electronic keyless entry....also it opens the trunk...if you have those buttons and don't know the code...96 and newer your local dealer can help you...if not...on the left side in the trunk,pull the "trim panel" and on the black electronic box,should be the code numbers