Hi everyone, two problems occurred this week 2009 grande punto media player not recognising memory stick and drivers door window and mirror adjusting switches not working!
As has been said, check the wiring where it passes from the door to the body. Also check the underside of the switch, the wiring plug has been known to come away.
As for the media player, try another USB stick, one of my sticks won't work for no apparent reason. I also think larger capacity sticks give more trouble.
For the media player problem, try disconnecting the battery for 10 minutes and then reconnect it. It may just need a reset, but i've been told you can lose your radio code by doing it.