changed the battery in my 2004 sir,now the top will not go down! any ideas? yhank you

Some cars require a battery that is replaced or been disconnected to be re-programed to the car's computer system. I'm not familiar with that procedure but I do know the dealer is. Go to the service writer and ask them. they should be able to assist you. It is not a complicated procedure or a long one. The car manuel does not cover that, but you may find it on line. Also if you replaced the battery yourself of had someone do it, make sure ALL wires are hooked up with solid connections and to the proper terminals. Check any fuses that may have been popped or blown that is connected to the top mechanical mechanism.