1. Always check the condition of tires. The working condition of tires directly affects the braking system and steering system. Therefore, the car mainly checks the tire pressure to ensure that the tire pressure is always within the normal range. If you often drive on bad roads, Qin Ying should check whether there are sharp nails, stones and broken glass on the tread pattern of the tire to avoid stabbing the tire. 2. Clean and scrub the vehicle chassis regularly. The vehicle chassis is the part closest to the ground among all parts of the vehicle. During driving, if the chassis is immersed in the sediment, it will be covered by attachments such as sediment and garbage. If not cleaned in time, the vehicle chassis will be eroded by attachments for a long time. 3. Check the operation of each part of the vehicle chassis. If there is something wrong with the vehicle chassis, there will be abnormal noise, which may be due to the operation and control of the vehicle. Therefore, it is necessary to regularly check and analyze the operation of chassis components, find problems in time, and repair them in time. 4. Inspection and maintenance column of vehicle shock absorber The shock absorber is also installed on the chassis, and the working state of the shock absorber will affect the stability of the car during driving. If the shock absorber works well, it can directly affect the service life of other parts of the car. 5. Will the car chassis rust? Because the chassis has been in a very bad working environment for a long time, it has suffered the most damage and erosion. Once corrosion is found, the corroded parts must be cleaned and replaced immediately. Inadequate maintenance of vehicle chassis will directly affect vehicle handling, comfort and safety. Automobile chassis maintenance is an important link to ensure the overall performance of the automobile.