Buck

Hi all, hope you can help m. I have a 2010 grand voyager CRD limited stow and go. My key fob will open all the doors except the drivers door( uk model). The unlock button goes up and down but the door will not open from inside or out. Car is used most days and usually covers over 100 miles daily! So I don't think it's battery. Have tried restating rake settings but to no avail. I'm getting to fat to climb through windows at my age!!! Can anyone help?