It sounds like you read the codes correctly. To see the "next" code for a particular diagnostic pin you just keep trying to read codes (hold the sw. for 2-3 seconds and then count the blinks) if you get the same number of blinks you've read all the codes. The diagnostic system displays the codes in ascending order, once you've read them all it will cycle through and display them again.

__________________
Daily Driver: 02 E430 4MATIC
In the family: '03 E500 // '04 ML500 // 64 220SE