Slight deformation of trunk lid can be repaired by sheet metal shaping. If it is very serious, it must be completely cut and replaced. The following is the introduction to automobile maintenance: 1. Appearance inspection: check the condition of doors, hood, trunk and glass before leaving the car, and check whether the car body is damaged, tilted and leaking. 2. Engine and various oils: check the fixing of engine parts and check whether the engine joint surface leaks oil or water. Check the fastening of the adjusting belt, and check the fixing of pipelines and wires of all parts. Check the makeup oil, coolant and electrolyte. 3. Tires: Check the tire wear and clean the suitcase. When approaching the tire wear mark, replace the tire. Check whether the tire is bulging, abnormal wear, aging cracks, hard injuries, etc. ?