Had a strange experience with my key fob last week when unlocking.
Pressed once and unlocked the drivers door but wouldn't operate on the second press of the button for passenger door etc,carried on journey but when I stopped and attempted to lock all doors nothing happened apart from setting imobiliser!!!!!!
Had to use eka code to get mobile and went through usual problems(fob battery,rf receiver)but no change decided today to disconnect battery and on re-connection remote fob was working fine!! oh the joys of owning a Discovery