I have a 2007 gs and am having a problem. When I lock the door from the key fob the drivers door doesnt lock everything flashes as it should and all the other doors lock but when you press it again it deadlocks and the door is locked. No major drama because the doors lock bu is just a bit of a pain. Is there something I can do to reset it or isit going to be an expensive repair or replacement. Help please.

I had a similar problem with the passenger door when I first took delivery of my '58 XS. Sometimes it wouldn't lock and other times it wouldn't unlock.
It fixed itself when I changed the setting from drivers door to all doors on unlock, and now I double lock every time and it's never been a problem since. 2008 FL2 TD4 XS Zermatt Silver, Manual
2010 Jaguar XF

There may be a problem with the small motors that lock and unlock the doors. I had to replace both motors in rear doors two months ago.