I'm a new RDX Advanced owner and can't quite figure out LKAS. It seems to do OK on the straights, but on gentle interstate curvds sometimes it makes the turn and other times it drifts to the outside lane while giving me a warning. So, when is it supposed to provide steering inputs on the curves and when is it supposed to just give a warning. The manual is not clear.

 

Sub'd.
We have a 16 Advance we picked up a few months ago. The Mrs is the primary driver so I haven't had tons of time behind the wheel. With that said to date, neither one of us has felt or experienced any steering wheel input - regardless of road type. Both of us have gotten the warning - which at times can be annoying.

 

The RDX actually has two systems that interact somewhat.

The Lane Departure Warning (LDW) is only active when the button on the lower dash is turned on. When it is turned on, and the vehicle is travelling about 72-145 kph (45-90 MPH) , and if it can distinguish lane markings, and you cross over the line without activating your turn signals, you will receive a warming beep.

LKAS is turned on with the button on the lower right side of the steering wheel. When it is turned on you will see the 2 vertical dotted lines in the MID, The dotted lines will be hollow when the system does not see the lane markings, or the speed is outside the range provide above. The dots will be solid when the system is active. LKAS will attempt to keep you between the lane markings, and if you should begin to drift across the lane marking you will hear an audible beep.

So both systems will provide warnings.

My experience with LKAS has been disappointing. Sometimes it will follow the road for the full 15 seconds before it demands steering input, but for the majority of times I can barely take my hands off the wheel to open up a soft drink.

 

I've had the same disappointing experience with LKAS. Although it works some of the time, it tends to drift out of the lane toward the left. Sometimes it will even steer itself out of the lane when "rebounding" from the right lane border. Although the system knows enough to sound the warning, it doesn't seem to know enough to be able to stay in the lane. It's generally been good enough to be an assist on straight sections of road, although not reliable enough to depend on it for very long. The dealer has had it twice with the complaint that it blows out of the lane limits. Their response is that the system is "in calibration".

 

I have noticed that while following a vehicle with LKAS ON and the vehicle in front changes lanes, the RDX tends to follow that vehicle and try to move out of lane as well. I did not take the chance to let it go, I always corrected it. Has anyone experienced this?

 

Yes. It's caused by the vehicle ahead covering up the lane markers, making the LKAS think the lane just got wider. Same thing happens when passing interstate exits where the righthand lane marker veers off, causing a pull to the right.