Bonjourno,
An E89 28i I might buy has an extra button and I can't for the life of me think what it is, it's too faint for a pic but it's next to the drivers seat heating switch, so in order going from right to left it has seat heating, this mystery switch, roof close, roof open, PDC switch off, a blank, passenger seat heating. The only thing it has that my current car has'nt is the 6 disc CD changer but I can't think it's that, I'm stumped, any idea's? :idunno: