RXLORMDX

Does the (2019 Lexus RXL 350) Lane Keep Assist feature actually work? Does it keep you in the center of the road and, if so, for how long? Thanks! Love Club Lexus!

jim256

Lane Keep Assist gives a Steering Assist, a gentle short term tug as the car approaches a yellow or white line. It vibrates the wheel if the car veers too far (Lane Departure). If you have Cruise Control on, you can engage Lane Centering which is much more aggressive and does fairly well keep you centered. Fine on a good limited access road but if you are on a highway, even 4 lane, that has more abrupt curves it is more aggressive than I like so I don't use it in those situations. There are sensitivity settings in the center display. On all you need to maintain steering wheel control and it will give an alert after maybe 15 seconds or so, and then disengages if you don't react.

DyaDya

A quick IMHO editorial. I agree with what i saw somebody else write in another post somewhere: "It is more of a novelty". To me, the radar cruise control is super awesome and super useful. The lane centering is more like constant experimentation to see how well it does. AND ALWAYS BEING SUPER MINDFUL while you are playing with it. Im sure if there was a car next to you, you would hit it as the car was correcting back to the center. It "works" but my tires are always going at least on the line very often as its turning back to the center which means the car is definitely overhanging into the next lane (ie potential collision). My advice: radar cruise control: AWESOME, but lane centering: play with it for pretty much entertainment purposes only.

Nail34

And never never use lane centering when being followed by a State Trooper!!

eddie420

lol

shadowmite

Look into openpilot if you want real self driving, the Lexus feature is more gimmick than real. But the car has the needed hardware to enable this.

qvtruong

It's helpful for me when I stuck in stop and go traffic...like at 5-10mph.

guxu

Without cruise control on, I never experienced steering assistance on my 17 RX350. Maybe I should visit dealer.

jim256

Is Steering Assist turned on in the center display? Go to the Gear on the center display, read all the options.

guxu

Steering Assist is on. I tried multiple times yesterday and this morning without cruise on. The best I can tell is sometimes MAYBE it steered while vibrating. Most times, it just crossed the white line without any correction action (at least it vibrated).

On my rental Hyundai and Subaru, I could feel the steering assist clearly when cruise was off.

jim256

I can feel the assist (kind of a pull rather than any abrupt motion--and it sometimes will still let you get to the line and vibrate. It almost seems to work better at 60 mph than 35), probably needs a dealer visit. The camera may be out of alignment or not recognizing the lines. Works with or without cruise, but not as aggressive as Lane Centering on cruise.

guxu

I think I got it. Yesterday when I was on highway, I purposely drove over the right side line and did not immediately correct it when the steering wheel was vibrating. Then I noticed it steered itself, smoothly. With cruise control on, it (Lane Centering) steers way before it starts vibrating. I believe Hyundai and Subaru can do Lane Centering without cruise.

jim256

You can also see when it is working when the little car symbol in the gauge center display turns green

Trap

I drove a Honda Ridgeline truck for hours on I-95 without ever needing to be touching the wheel. Stayed dead center in the lane, speed adjusted automatically to traffic, and needed zero driver input.

Lexus rarely follow the lane in most circumstances other than a straight line. Computer sometimes complains that driver is not holding the wheel and disengages the lane assist - when it's probably needed most. The radar cruise follows distance well. Cruise fails miserably on roads that change elevation up\down in ranges under 1/4 mile or less - when set at 35mph will vary from 28 to 43mph as it hunts for the correct engine rpm and transmission gear. Shows off the car's awful hesitation problem often.

toyotaman7

What year is your RX?