[tonycarreon]

burg is right. the previous owner set the seats memory location and associated it with the key.

to reset it: (from the owner's manual):
1. switch the ignition on with the desired key
2. set the desired seat, lumbar and door-mirror positions. if you wish to have the passenger's mirror swivel down as a parking aid when reversing, reverse gear must be engaged when the seat position is stored.
3. keep memory button M depressed and press the central locking button on the remote control within 5 seconds. the individual setting is now assigned to this remote control.

to completely clear the settings:
1. switch the ignition on with the desired key
2. simultaneously press and hold buttons 1 and 3 for at least 5 seconds.