I just bought a used 2011 Mariner and noticed it has a keyless code pad on the door. There was not a manual with the vehicle, so I was wondering how I can find the factory code?

 

Not sure if you had any luck. Helped a friend track down one of his same year Ford Escape. They put the codes in the damnedest places LOL. In this particular instance do you have to remove the center console and you will find a module right in front of the shifter. Looking for a small sticker that has a barcode and your 5-digit keyless entry code. If it has any more than 5 digits on it it's not the right sticker. Good luck.