2009 Mercury Mariner doesn't accept factory keyless code
 

Hello everyone.

I have a problem with my factory code to unlock the door on my mercury mariner 2009. I got the factory code tried and worked perfectly, then I tried to set my own code but maybe I did something wrong and now it doesn't accept my own code and the factory code either.

I've read that I can do a reset just entering the factory code and then press the 1-2 button, the thing is that it doesn't accept the factory code anymore.

Regards.