You have to spend a bit more for a canbus one, you're right that the bog standard leads don't support the later cars.
Somewhere on here there is a link to a canbus lead that is reasonably cheap (<£50), I think that's the best option for later cars. I should really be heading for work rather than being on here, but if I remember later I'll do a search if you haven't already done one by then.
Somewhere on here there is a link to a canbus lead that is reasonably cheap (<£50), I think that's the best option for later cars. I should really be heading for work rather than being on here, but if I remember later I'll do a search if you haven't already done one by then.