1. Remove the storage box on the main driver's side and take it out from under the dashboard.
2. Remove the cover above the accelerator pedal and take it out from under the dashboard.
3. Remove the fixing screws of the side baffle and take them out from under the instrument panel.
4. Remove the fixing screw and nut of the iron bracket beside the accelerator pedal and take it out from under the dashboard.
5. Lying under the main driver's seat, look up at the position of the evaporation box and find the servo motor of the warm air door, which is a cylindrical motor with a plug and three small screws.
6. Unplug the plug of the warm air door servo motor, unscrew three small screws with a screwdriver, and take the warm air door servo motor out of the evaporation box.