Discovery 2 central locking

I have a 2003 Discovery Facelift. Believe it or not, I don't have a problem with the central locking. However, when you press the key fob once, only the driver door opens, twice and the others open. I know this is to stop people jumping in the car if you are a lone driver. However, the manual says you can disable this option, does anyone know how.

i would guess taking it to a main dealer to get the BCU re-programmed is your option...

Thanks, I thought there may be a simple selector switch on the alarm/central locking control unit