I've had a look at the lock design now and the main problem is that it is a rotating barrel which simply engages a plunger when unlocked, to be able to centrally lock/unlock it you would need to be able to rotate the barrel externally, the standard lock doesn't have provision for this.
Other than modifying the lock, you are a bit stuck. You could still have remote release, either from inside the car or from a second button on your fob, but the boot would remain locked as such.
Funilly enough that is roughly how the boot lock on my 800 works, you can open it with the key or from an interior release button.
One other thing you could do if you wanted to be really clever, hook up a servo/solenoid to the petrol cap lid lock so that is centrally locked too.
Edited By webmaster on 1158611002