This is a DIY for a Key Ignition switch on a 98 - 02 Corolla .
If you have tilt steering pull down on the handle to the left and let your steering be loose . Make sure key is in ignition . Then you remove the bottom screw and the 2 screws in the front behind the steering wheel . The way to get to this is to turn your wheel left and right . Once you remove the 3 screws you can pull apart the cover .
Once you have the cover off then you can remove the ignition switch light . You don't need to unplug it you can remove the clip and the ring will come off .
With the key in the ACC position find a pointy tool and push the button on the bottom and at the same time pull the ignition switch with the key in it out . You cannot remove the ignition switch with out the key in the ACC position .
Once you remove the old one then you can slide the new ignition switch in the hole , Then you can put everything back on the same way you took it off .
The key will be sticky cause it is new so don't force to turn the key or spray WD 40 let it happen naturally . The key will loosen up in time .
More info : www.corollacarclub.proboards.com