What does glow mean on fuse box - answers wwwers›Categories›Cars & VehiclesGlow is probably for glow plug which is a diesel engine application. If your vehicle isn't diesel, it had that option as an engine, so that fuse. Fuse box Volkswagen Passat B7 - fusesdiagram Locate fuse and relay. Fuse box diagram. Identifying and legend fuse box Volkswagen Passat B7 2010-2015 .