How to open trunk on Toyota Corolla 03 with factory remote?

i have a toyota corolla 2003 le keyless entry remote...it has the trunk release button on it but it does not work, how do i get it so work, so when i press it my trunk opensHow to open trunk on Toyota Corolla 03 with factory remote?with some cars you have to push the trunk button twice for it to pop,keeps you from accidentally popping it open when you put the keys in your pocket