Generally all modernish cars have folding mirrors, but yes, (some? Idk if it was an option or not) mk1 Jazzes have power folding mirrors, active when the ignition is turned on only though I believe. Little button on the mirror/headlight adjustment panel. There's probably a fuse, check your owners manual for the fuse box diagrams and location (1-2 in engine bay, one behind a panel below the steering column)