Unscrew the cable off the negative side of the battery. Take out knee bolster trim panel, knee bolster, upper and lower steering columns covers, then bend the steering column to the lowest. It should be done with caution since doing both of them at the same time of taking out the ignition switch and key lock cylinder may result in damage of the steering column. Unscrew the electrical connector the ignition switch, then screw out the mounting screw and press the release tabs so that the ignition switch can be pulled off the steering column. Installation of the switch is the opposite of its removal and is best installed in a snapping manner. The ignition switch and key lock cylinder should also be taken with caution. 1. Turn ignition key on 2008 and earlier models or ACC off 2009 and later models. Depress the release button of the key lock cylinder with a proper tool and take out the key lock cylinder. In order to install the key lock cylinder, it is necessary to insert the key lock cylinder into the housing of the lock cylinder and press it inside until it clicks. Ensure that the ignition switch is working properly in the OFF, ACC, RUN and START positions with installation being the opposite of uninstallation. It is not necessary to remove the lock cylinder illumination ring in order to replace the lock cylinder. Unscrew the electrical connector out of the illumination ring, unscrew the lock tabs and take out the illumination ring. Installation is its counterpart, and it is opposite to remove, and the ring should be able to be placed.