when I use the key to auto unlock the door it will not respond...can't get in on 2001 Porsche Boxster

have had the car for apporx a month; first time this has happened

Asked by for the 2001 Porsche Boxster
It could be as simple as a bad battery in the remote, have you tried the other remote for your car and see if that works. First try replacing the battery and see if the remote comes back to life.
Google "reprogram Porsche Boxter remote" or follow this link,_Keys,_Remote