The main maintenance work before the car is:

1, check the door and window glass, wiper, indoor mirror, rearview mirror, door lock and elevator handle is complete and effective.

2, check the driving license, license plate, horn, light is firm and reliable.

3. Check whether the connecting parts of the steering mechanism are firm and reliable.

4, check whether the tire pressure is in line with the provisions and remove the debris between the twins and the tread lines.

5. Check whether hub bearings and knuckle pins are loose

.6. Check whether the leaf spring and U-bolt are strong and reliable.

7. Start the engine, check whether there is abnormal sound, and whether the instruments work normally.

8. Check whether there is water leakage, oil leakage, gas leakage and electricity leakage.Check whether the equipment is complete.