Front seats

[Themoog]

My X5 has the comfort option with the seats and easy access memory control too.
The other week I bagged a pair of electric sport seats in really good condition so I could try them to compare.
I installed them this morning and quickly found out that they are non heated.. I thought all E53 had heated seats?
Further to that, the memory function on the steering wheel at least doesn't seem to operate the same.
Previously when the key was turned off the wheel would move up and in to give maximum access. Now it just moves upwards.
I haven't tried the seat memory as I've set it how I want but I'll try it later.
So, in conclusion I may swap them back which is a shame as they make the interior look like new and the driving experience has changed so it seems like a different car.
Can anyone explain what and how the options work ie why don't mine now work the same.