The following procedures cover the removal of the door handle, door lock cylinder, and door latch for the left front door. Other doors are similar but simpler due to the lack of a lock cylinder. To remove and install the door lock cylinder, first open the door. At the door's rear edge, pry out the plastic plate from the access hole, then remove the plastic oval trim. Use a 5 mm Allen wrench to remove the lock cylinder mounting screw. Slide the lock cylinder slightly toward the rear of the car and out of the door. If necessary, lever out the cylinder with a tool inserted in the access hole. When installing, ensure the notches on the inner lock are aligned. The installation process is the reverse of the removal. If the door handle gaskets are damaged, replace them.