To remove the latch in 2004 and earlier models, one has to first open the trunk then remove other trim panels around the latch after which he draws a line around the latch assembly to help in re-installation of the components. Unlock the lock cylinder by rotating a rod that is fasten to it then, remove the two nuts or bolts holding the latch and pull it out. Regarding installation, you should place the latch in the position of the line you made earlier. To do for vehicles produced starting from 2005, turn the vehicle on and open the trunk, pull the trim panels, unscrew the arresting mechanism two clips, disconnect the plastic connector and the cable from component, back of the latch, and then posted the latch back into position while reconnecting the clips. For 2004 and earlier models, to replace the trunk lock cylinder, one would have to first open the trunk, remove all the necessary trim panels, disconnect the latch to lock cylinder rod, followed by the removal of the lock cylinder retaining clip using a pair of pliers and finally pulling the lock cylinder out of the trunk lid from the exterior. For models 2005 and later: Open the trunk, then pull out the trim panels, and take out the trunk lid release handle; then to disconnect the connectors of the trunk opener cable, and to erase two fasteners to take out the lock assembly. Removal and installation for both models are quite the opposite of one another.