mirror issue
 

I have a strange issue,

I always use the same keyfob, however, each time I go to drive, when I unlock the car with the same keyfob, the car resets the driver side mirror. I have to adjust the mirror each time I drive and it is quite annoying. Why does it keep adjusting? how do I get it to stay? It's a volvo S80, year 2001.

Thanks!!