I have not been able to find much information about the active rear steering in my '24 LC500. I saw a Lexus video on it, but it wasn't specific to the LC or technical.

I have a couple of questions.

1. At what speed does the steering switch from the opposite to the same direction?
2. If you are in the process of a turn, will the rear wheels switch in the middle if that speed is reached?
3. How much do the rear wheels turn (I assume not as much as the front)?

Thanks!

 

Don't have rear steer, but pretty sure the "speed" which it changes is the kind of speed you wouldn't be doing a tight turn in. I'm just using my understanding of how these things should work (again, I don't have it and I haven't even googled it), but my guess is for tighter turns at slow speeds, it's probably active up to a moderate speed you'd drive in a parking lot or garage, or when doing a u-turn.. like 20k/hr or so. Then at "highway" speeds (say 80k/hr or so) the wheels turn in parallel. It could even be a higher speed than that. Where this is used mostly for highway speed lane changes.

Now I'm gonna go do some quick research.

EDIT: Did research. It's more complicated than I stated. There are close to a half dozen different rear wheel steering systems. But to answer your earlier question, it appears the ratio of rear steering adjusts along with speed, where at some point it hits parallel to the car, and then grows in the opposite direction as speed increases. This is based on basic research. If anyone has LC specific knowledge, I'd be curious to learn more.

 

It's like driving a normal car. Maybe a BMW you turn radius?

 

The rear wheels turn by 3 degrees on each direction. Thats what i read about the LC long time ago

 

i have drs (rear steer) and i'll tell you one thing, while i can tell it's working you can't SEE it working. i think the system does not do anything while stopped if you just crank the steering wheel in either direction like some rws systems i've seen (e.g., cybertruck!). i think i'd need a gopro mounted to the side of the car to catch the action in motion.

 

After posting, I found the following video.

 

I have been driving a 2015 GS with rear steering for years. I think LC uses the same system, basically it turns 2 degrees max at any driving modes, switch happens at round 35mph, you can notice the switch and it's unnatural if you look for it, but mostly unnoticeable daily driving.

Turning radius is pretty good but not a huge difference, maybe like 2-3 ft

Speeding up out of corner you will go to "understeer" because of rear wheels, so you will need to steer more. There is a small "dead" zone in speed range where rear wheel is netural.

 

Okay, that makes sense, then. I have been experiencing an unsettling "wiggle" when turning. I think the use of the term "highway speed" is a bit off the mark.