Turn key ON

Hold button [ led will light when holding ] for 2-3 secs - release

The first stored Code will flash back -write it down

Do above sequence after each code flash until the codes [ if there are more than 1 stored] have returned to the first code ... They will come in numerical sequence .. 3,5,7,8,etc.......

You have to have at least one code stored or the CE would
not be on....