where can l find the keyless code on a 2005 mercury sable thanks

It is always in the car somewhere. If not in the glove box, or behind it -- look in the trunk or to the left of where your legs are when you are driving. It will be on a white decal with black numbers printed on it. There will be a lot of other things printed on this sticker and they are purposely hard to find.

Stop by the dealer and ask!! Just be sure to bring a document to prove you own the car. It could be in their computer is database or the sticker that someone else mentioned above. Hope this helps!

it is in the trunk, behind one of the panels, on the back of the door lock module.