Came offshore last week and the other half went to give the car a run today and struggled to get the doors unlocked. The manual lock wouldn't work but it eventually opened using the remote button on the key. She also said there was a constant "beeping"?? Once in she tried to start it and - nothing! She also mentioned a "key symbol" appearing in the display. This is what I could interpret from a 10 minute phone call tonight, (from a female!) I was thinking flat battery?? Any of you guys experienced this before or know what might have caused it?