4.5. Use a cross head screwdriver to loosen off the four screws that
fix the shield inside the door.
4.6. Use a cross head screwdriver to loosen off the screw that fixes
the handle inside the vehicle door.
4.7. Use a flat head screwdriver to pry off the plastic cover of the
screw hole for the handle inside the vehicle door, and then remove
the fixing screw with a cross head screwdriver so as to disassemble
the lock assembly inside the door.