You have to take the car to a M/B dealer that works on smarts. The service department will plug their Starr computer into your smart and tell the Sam to allow the driving / fog lights to be active.
Mercedes Benz may charge you for this service. Don't you just LOVE owning a Mercedes Benz and the costs associated with ownership.
Oh, that's right it isn't a Mercedes it's a smart. I'm sure your wallet can't tell the difference.