The 2011 owner's manual has additional information on seats and memory below.
If I'm understanding this issue correctly, it happens when
(1) Exit Seating is enabled
(2) Seat Memory recall is enabled
At unknown random intervals, the seat does not return to the memory position when the vehicle is unlocked. Do I have this right?
Is everyone using the same remote all the time, or might you be switching them up?
Recalling RKE Memory Positions (Memory Remote Recall)
The Memory Remote Recall feature can recall the driver seat, outside mirrors, and adjustable pedals, if available, to previously stored RKE Memory positions when entering the vehicle.
Every time the ignition is placed in OFF, the positions of the driver seat, outside mirrors, and adjustable pedals, if available, are automatically stored to the RKE transmitter that was used to start the vehicle.
These positions are called RKE Memory positions and may be different than the previously mentioned Button Memory positions saved to the “1” or “2” buttons.
To automatically recall RKE Memory positions, unlock the driver door with the RKE transmitter, and open the driver door. On vehicles with Keyless Access, opening the driver door when an RKE transmitter is present will activate the RKE Memory recall. If the driver door is already open, pressing the RKE transmitter unlock button will also activate the RKE Memory recall. The driver seat, outside mirrors, and pedals, if available, will move to the previously saved RKE Memory positions.
This feature is turned on or off using the vehicle personalization menu.
See “Memory Remote Recall” under Vehicle Personalization on page 5‑40 for more information.
To stop recall movement, press one of the memory, power mirror, or power seat controls, or the adjustable pedal switch, if available.
If something has blocked the driver seat and/or the adjustable pedals, if available, while recalling a memory position, the recall may stop. Remove the obstruction; then press and hold the appropriate manual control for the memory item that is not recalling for two seconds.
Try recalling the memory position again by opening the driver door and pressing the RKE transmitter unlock button. If the memory position is still not recalling, see your dealer for service.