Ray,
There is some way to just set them, but the industry makes that extremely difficult because they do not want to make it easy for people to set them back at resale time. There is some proprietary hookup and software involved. Heck, if a teenager can crack an I-phone this is probably not hard by comparison. I just decided to use the brute force approach to set mine.

One would think there should be a one time set option when you buy a replacement unit, and the number should only get bigger, but that is what VDO wants $125 to adjust.

I know it only takes them 5 minutes to set it and I dislike paying that much money for 5 minutes work. After all, the guy is not performing surgery on me....in that case I might spend that kind of money for 5 minutes work.