Keyless entry will have a keypad built into the driver's door handle.
Each vehicle with keyless entry has its own factory code
the batterys in your keyless remote may need to be changed
Your Sable will have keyless entry if there is a numbered access keypad mounted under the driver's door handle on the outside of the door. Your owners manual will have the default code for using the keypad and will also have instructions on how to program a personal code.
It is printed on the computer which is normally under the kick panel or mounted against the rear seat in the trunk.
the keyless entry code is inside the cover in the back where the rear windshield washer container is
The keyless entry code for a 2008 Mercury Sable is typically located on a label inside the driver's side door jamb or on the trunk lid. If the code is not found there, it may also be listed in the owner's manual. Alternatively, if you cannot locate it, a Ford dealership can retrieve the code using the Vehicle Identification Number (VIN).
its on a little card in the glove box
No , just the factory code and a personal code if it has been entered
Just a long shot, but check inside the trunk for a sticker.
Check instructions in the users manual.
Check the users manual
check out www . motorcraft service .com ( no spaces ) click on Owner Guides the owners manual can be viewed on-line