Lane keep assist
Thread Starter
Member
Joined: Oct 2009
Posts: 75
Likes: 7
From: Canfield, OH
2015 S550 4MATIC AMG Sport package, 2006 S500 4Matic (Sold)
Lane keep assist
Can someone answer how lane keep assist operates? Does it apply brakes to either the left or right side of the vehicle to center in the lane or does it actually steer the vehicle?
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Joined: Sep 2019
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From: U.S.
Current/Last 5-years:GLS;G70;Alpina B8;X7;Accord. Sold:X7,TeslaS;S560;S550,X5;530e;L.Navigator;LS460
Lane keep assist does control the steering but up to a certain angle only. If you accidentally departs your lane and the system detects the departure from the lane then instead of aggressively steering the car back it applies a brake to the left or right wheels to force the car to go back to the other direction without causing oversteering or loosing control
Senior Member
Joined: Nov 2015
Posts: 352
Likes: 61
From: Encinitas, CA
'00 SL600
Lane keep will vibrate the steering wheel as well if you approach or cross lane markers without signaling.
Only when you have Distronic engaged will it actually steer for you. And if you’re in traffic under 20 mph- you get unlimited hands free steering. Once you go above 20 mph, it’ll remind you to get your hands back on the wheel every 15 seconds or so.
Only when you have Distronic engaged will it actually steer for you. And if you’re in traffic under 20 mph- you get unlimited hands free steering. Once you go above 20 mph, it’ll remind you to get your hands back on the wheel every 15 seconds or so.
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Joined: Sep 2018
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From: New Orleans Area
2015 E400 Sedan
MB website for: Active Lane Keeping Assist
With technology that monitors ordinary road markings above a certain driving speed, Active Lane Keeping Assist helps detect unintended drifting off-course, and alerts you by vibrating the steering wheel. If you continue to drift, it can selectively brake individual wheels to help guide the car back into its lane. Enhancements help it to detect and alert you to overtaking vehicles, vehicles you would need to overtake if you change lanes, and even oncoming traffic in the adjacent lane.
Available in Driver Assistance Package
Distronic with steering assist is differnent and does use steering... but only when distronic is on.
With technology that monitors ordinary road markings above a certain driving speed, Active Lane Keeping Assist helps detect unintended drifting off-course, and alerts you by vibrating the steering wheel. If you continue to drift, it can selectively brake individual wheels to help guide the car back into its lane. Enhancements help it to detect and alert you to overtaking vehicles, vehicles you would need to overtake if you change lanes, and even oncoming traffic in the adjacent lane.
Available in Driver Assistance Package
Distronic with steering assist is differnent and does use steering... but only when distronic is on.
Last edited by ygmn; Sep 27, 2019 at 07:22 AM.
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Joined: Jan 2016
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From: Brookshire, Texas & Cat Spring, Texas
2019 SL550/2023 EQS 580 SUV
LKA is the one option I have turned off. In my area with so much road construction and poor lane striping it initiates constantly and is more annoying than helpful.
Super Member
Joined: Jun 2010
Posts: 737
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From: Maryland
2025 S63. 2022 911 Turbo S, 23 BMW M5C
Right. I only used these features to try them when I bought my car last year but would never use them again, rely on them or trust them ... ever. I've heard too many stories and find using any of these features totally scary. I know most others would disagree with me but I know what I'm personally comfortable with, and it's not to trust my car to steer, slow down, know where I am in a lane, etc.
Member
Joined: Jul 2015
Posts: 92
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From: So. Calif.
2015 S 550 / SOLD:2012 CLS 550
YGMN is right on and I may add that when not using Distronic plus the warning I get is not a steering wheel vibration but a severe braking instead ( very un-nerving) on the side where the lane markings are. When using Distronic plus I get a gentle nudge in the steering wheel in the opposite direction to the lane crossing.....for those that prefer "driving their vehicle with both hands on the wheel" then this nudging is reassuring. Some complain that the system if left on its own without your input, will act like a ping pong video game, but when using the system together with your driving input, we get a safer result.
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S600
Say you have a double apex turn where a single turn of the steering wheel takes you from outside track, to first apex, to second outside, to second apex to track out all with a single turn of the steering wheel. LKA will make you make at least 3 steering inputs and buzz the steering wheel twice more.
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