-03 S8 driver seat memory funktions only from one key

[Night Train]

Just to be awkward.....

I managed to assign 3 keys to 3 positions regarding seat/ mirrors column etc, but only 1 will start my S8, and then if the other one manages to start the car, the original will not, my 3rd key (*bay cheapie) is kept just to open the car in an emergency as nothing could get that to work, even with matching part numbers.the main dealer is unable to make 2 keys work, at least I got to keep the new (working) ignition key
........ any ideas?

Thanks,

Richard.