When I originally ordered my Smart, I don't recall seeing the fog lights as a separate option (part of a package I wasn't interested in) so I didn't add them. Later I asked the dealer (Bedford) about adding them and they advised me it would be something like $1000. Now that was the salesman, I didn't bother to ask in the service department, but next time I'm in, I'll ask again. If the part for the button bank is $130 and you're talking about $50 to activate and ? for the fogs themselves (plus labor) maybe they weren't wrong. Ouch.