Originally Posted by arentz07

Open question for anyone who is having this issue about an observation I've noticed recently.

If I wiggle the steering wheel back and forth while the car is stopped, I can feel it "catching" in certain spots. I have noticed two spots - one that is somewhat to the left of center, and another that's to the right, but slightly father off-center than to the left.

Does anyone else have the same phenomenon occur in their car?

Originally Posted by sunamer

I think if you are doing it stationary and quickly enough, you are going to feel the EPS itself rather than that binding issue.

That is to say, you turning the wheel and the assist kicking in will have a slight mismatch, so you will feel a larger force required to move the wheel initially, but then later, after the system detects that you actually need assistance, it provide it, thus reducing required manual effort. It is probably less than 200ms time difference.

If you do it quickly enough, you can feel it "catching", but I don't think it is the same problem.

Also, can you try rotating steering wheel of center (like by 90 deg) before you do your experiment?

Originally Posted by Joshlee73

Hey guys, before you ask - yes I did search the board and found a few posts on this but I want to run it by you guys anyway.

I have owned my beloved IS for about two years now but yesterday was my first long distance trip. I noticed that above 70mph on long straightaways that if I needed to change lanes the electric power steering felt like it went to sleep; it would feel almost notchy, like I needed to overpower some sort of detent. It happened so bad that the car felt like it was gonna get a little squirrely on me. The thing is - if I slowed down well below 70, the problem in fact went away, did not need to cycle the ignition or anything it just went away. It would then return above 70 but not immediately.

So, no warning lights on the dash. 62K miles on the clock. No modifications to the car, bone stock. Car drives straight and normal. No strange wear patterns on the tires and car was recently serviced and inspected.

One post said that the fix was to ultimately replace the steering rack: https://www.clublexus.com/forums/is-...long-post.html

My question is: how can this be a mechanical problem if it only occurs above certain speeds for sustained intervals? It really sounds like a software issue to me but I have found nothing about it, only to replace the rack.

Please help. I am actually a little concerned about driving the car long distance again that it could become a safety issue. Thanks in advance.

Originally Posted by Yahya

hi there i am getting the same issue here on my 2018 Lexus is300 f sport RWD.
it is annoying, I’ve seen one youtube video which shows a connection down might be lose, I didn’t tried it, my car only 46k miles any one knows what could be the issue !