Only if you have a 'Ghia', so as OP says lesser model's need modding, apparently it only applies to 5 door cars as well, I am interested in this as well, I believe it would be controlled by the GEM which I should think are all the same across the models, so it maybe just needs enabling, there is something on the net which says you do a specific sequence with the buttons of the remote to enable it?

Also it's only applicable to MK 1.5 (Facelift) models.

Martin