According to my understanding, it usually takes about 2 to 3 hours to replace the reduced scale elevator bracket of Volkswagen lavida. This process involves the removal and installation of the reduced scale lifter bracket and requires a certain degree of skill and experience. It is very important to ensure the quality and safety of the work, so it takes a certain amount of time to complete the work. Please note that actual working hours may vary depending on the situation, and it is recommended to consult a professional automotive repair technician for accurate information.