how can i fix my simpson 22s950l whashing machine?

lost the lid bought a new one but for some reason it keeps saying lid is not down... cant find the sensor cant bipas the sensor on this model and am thinking i may have lost a part when the lid originally flew off down the highway
any help would be apreciated.. orderd a new lid which i have but it is a metal lid and i dont think the original lid was metal.. am sort of stuck