For some reason my driver's seat appears to have lost it's "memory" of my driving position. The seat was moved when in for a dealer service. When I got it back I put it back to my normal position. However, now when someone gets in the back seat, it doesn't slide back to the normal position like it used to. It will just slide all the way back. Is there something special I need to do to reset the memory? The manual doesn't really provide any guidance.