Just remembered a bit of maintenance that I did when I first bought this. Post this in response to a thread discussing sticking throttle peal in the DBW models of LC/LXs.
Stiff/Sticky Throttle Pedal Thread
So, I kinda temporarily fixed this issue but probably not the right way. Unfortunately, I did it a couple weeks after buying the LX last year and didn't take any pictures. Going off of memory, so don't expect this to be exact.
When I first got my LX, I noticed the throttle pedal was kinda notchy; it wouldn't move smoothly through its range, but rather, seemed to skip as I increased pressure. It made it so that it was kinda jerky to drive at times, especially off road.
At first, I thought it was the large spring on the outside of the unit that appears to exert return pressure on the pedal, or the pedal position sensor at the top. Greasing all that didn't do a thing, and I hadn't yet stumbled upon the post in this thread talking about never greasing it unless you want to replace it.
Regardless, since that didn't help, I pulled the whole pedal assembly out. It's constructed with a bracket that holds the pedal, and the pedal has a rod that passes through the bracket. Inside the bracket, wrapped around the pedal pivot rod, is a thing. I really don't know what to call it, but it's a thing that is shaped like a cylinder, and is responsible for the majority of the pressure you feel when you press on the gas pedal. Inside this little thing are two complimentary pieces of plastic - one is fixed in place, and the other rotates with the gas pedal rod. Behind one of these pieces is a spring that you push against when you press the pedal.
What fixed my problem for at least the last year is to disassemble the cylinder and grease the sliding surfaces between the two plastic pieces that fit together. Years of wear had made those surfaces no longer slide against each other smoothly. Here's where I probably screwed up - I doubt plastic is a big fan of moly grease, which is what I used to grease the surface. I'm imagine something like graphite would probably be a better alternative, but maybe someone can chime in on what sort of lubricant should be used between sliding plastic surfaces.
One big note is that it is quite difficult to get the cylinder to come apart. The end cap is made of plastic with multiple sets of groove cast into it, and pressed together. The only way to disassemble the thing is to use some small screwdrivers or dental picks to pry the end cap off, and you will scratch it up good. It was clearly never meant to come apart, but I didn't destroy it in the process, fortunately.
Do at your own risk - worst case you can replace the pedal, but that ain't cheap. If it works, you just saved 400$; if it doesn't, not really much worse off.
