The rod was upgraded at some point and the newer rod has a thicker section at the location where they always break. I have replaced three of them (one broken one and two proactively) and I can tell you that the new ones are better. As tempting as it may be, DO NOT buy the just the rod from ebay. You won't be getting the updated part. You'll have to order the entire switch assembly from Toyota to get the upgraded rod. You'll be pulling the new rod out of the new housing and installing the new rod into your existing housing. Not sure when the upgraded rod started going into the trucks, but the newer trucks may already have the upgraded part. You should absolutely replace the rod as preventative maintenance, as it is very simple to remove before it is broken. Once it breaks, all bets are off. Unless you like to carry around all manner of needle nose pliers, hemostats, long, thin screwdrivers and a couple of really good headlamps you don't want to do this job on the trail or even in a parking lot. It sucks.