Then, after you find that code, Type it in. As you hit the last button, your door will open. Press 1/2 then type in your new code. Then press 7/8 and 9/0 at the same time, this will lock all the doors and shut the lights off. Type your new code to see if it works. Then, to open the rest of the doors hit 3/4, to open the trunk hit 5/6 to lock all doors hit 7/8 and 9/0 together.