First, open the door of BMW x3 cab.
Second, pull up the manual brake of BMW x3 to prevent the car from slipping.
3. Press the refueling switch of BMW x3 on the left side of the steering wheel and the combination switch of hollow plate.
Fourth, pull up the fuel tank cover of BMW x3, and the fuel tank cover will be opened.
5. Unscrew the plastic cover inside the BMW x3 fuel tank cover, and you can refuel.