I got Mercedes A Class W168. Recently I got a weird problem, when I switch the key, only battery & SRS lamps lit at dashboard. Engine, headlamps, radio, horn, windows, power steering work. Wipers, signal lamps, interior & dash lamps, central locking are out of service, even when engine running.
Ceiling lamp turns on for a second then goes immediately.
What would be the problem? It doesn't seem like blown fuse problem to me.