Lane/brake assist
Thread Starter
Junior Member
Joined: May 2020
Posts: 47
Likes: 14
2018 GTR
Lane/brake assist
I gotta say it’s super annoying when lane departure kicks in and the brakes are applied. I don’t mind if the car corrects itself with steering input but that braking thing is borderline scary and certainly uncomfortable. I see there’s a brake assist menu that has 3 settings but that appears to relate to a front collision type of scenario. Any idea how to decouple the braking when lane departure kicks in??
Junior Member
Joined: Jun 2019
Posts: 37
Likes: 7
From: Palm Beach, FL
2019 E63S
I agree. The system is completely useless. Way too aggressive and scares the passengers who don’t know what it is. I turn it off unless I’m on the highway. Swing and miss from Mercedes in my opinion. Also what is the reasoning for disabling cylinder deactivation with cruise control on. The one time I want that is when I’m cruising on a highway for better mpg.
Member
Joined: Aug 2019
Posts: 122
Likes: 26
From: Miami, FL
2020 E63S Wagon, 2021 GLE450
I agree. The system is completely useless. Way too aggressive and scares the passengers who don’t know what it is. I turn it off unless I’m on the highway. Swing and miss from Mercedes in my opinion. Also what is the reasoning for disabling cylinder deactivation with cruise control on. The one time I want that is when I’m cruising on a highway for better mpg.
Agreed. LDW is really annoying. Slams on the brakes every time I exit the highway close to my house and drive over the yellow line. I just turned it off.
Senior Member
Joined: Jan 2007
Posts: 361
Likes: 57
2006 E55 Wagon (RIP), 2019 E63S Wagon (Sold) 2023 AMG GT634S
(I turned mine off - so I don't know the answers to these questions...)
Can it be "toned down"? The BMW rental I had for a while allowed a decent bit of latitude before it got aggressive, and you could stop the beeping and manage how intrusive it was. On my last MB loaner, I almost got INTO an accident because the damn car kept beeping at me during lane changes, merging and on ramp entrances..... Therefore I didn't even bother to "fine tune" it on the new wagon - just shut it off.
I don't think AMG folks are in the target market for these particularly aggressive "driver assist" things.
Can it be "toned down"? The BMW rental I had for a while allowed a decent bit of latitude before it got aggressive, and you could stop the beeping and manage how intrusive it was. On my last MB loaner, I almost got INTO an accident because the damn car kept beeping at me during lane changes, merging and on ramp entrances..... Therefore I didn't even bother to "fine tune" it on the new wagon - just shut it off.
I don't think AMG folks are in the target market for these particularly aggressive "driver assist" things.
Senior Member
Joined: Dec 2003
Posts: 474
Likes: 210
From: cali-hawaii
2020 e63s wagon
(I turned mine off - so I don't know the answers to these questions...)
Can it be "toned down"? The BMW rental I had for a while allowed a decent bit of latitude before it got aggressive, and you could stop the beeping and manage how intrusive it was. On my last MB loaner, I almost got INTO an accident because the damn car kept beeping at me during lane changes, merging and on ramp entrances..... Therefore I didn't even bother to "fine tune" it on the new wagon - just shut it off.
I don't think AMG folks are in the target market for these particularly aggressive "driver assist" things.
Can it be "toned down"? The BMW rental I had for a while allowed a decent bit of latitude before it got aggressive, and you could stop the beeping and manage how intrusive it was. On my last MB loaner, I almost got INTO an accident because the damn car kept beeping at me during lane changes, merging and on ramp entrances..... Therefore I didn't even bother to "fine tune" it on the new wagon - just shut it off.
I don't think AMG folks are in the target market for these particularly aggressive "driver assist" things.
Super Member
Joined: Jun 2010
Posts: 822
Likes: 160
2018 E63S Wagon
I can't remember how off the top of my head but there is a way to turn off the braking associated with lane departure. If no one responds before I get a chance to dig in the menus I'll be back here.
MBWorld Fanatic!
Joined: Feb 2010
Posts: 1,213
Likes: 277
From: North CA
2021 E63S and 2025 GT63
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Out Of Control!!
Joined: Nov 2018
Posts: 11,468
Likes: 5,357
From: San Francisco Bay Area
2019 C63CS
The MB lane keep assist doesn't do steering corrections. It has two stages. If you start to come close to the lane markers it slightly jolts the steering wheel to alert the driver that they are about to cross the lane markers w/o indicating. If the driver ignores the warning, then the inner brakes get applied to steer the car back into the lane. The brake application is the means by which it steers the car away from the lane marker. At the same time it jolts the driver back into paying attention. It's actually quite effective. If you cross lane markers without first indicating, then you only have yourself to blame. If you are properly using the indicator it won't apply the brakes when crossing the lane markers. One small annoyance I have with the system is that occasionally it seems to slightly mistake cracks and other lines in the road as lane markers and I get the minor steering wheel vibration, but otherwise it works pretty well. I only get the brake application if I wasn't paying attention and the car is about to drift into the other lane.
MBWorld Fanatic!
Joined: Sep 2018
Posts: 3,247
Likes: 933
From: New Orleans Area
2015 E400 Sedan
Turn it off....
What happens is you are along side someone passing them and they decide to get in yoru lane so you are forced out of your lane in emergency move.
But the SMART MB pulls you right back into this other car and well ACCIDENT..
Had it almost happen to me many times until I turned it off..
Nothing will scare you more then an 18 wheeler moving over into yout lane and yoru car trying to brake you into this truck as you fight both trying to steer away from truck...
also can be a PIA if soemthing is in your lane like truck tire, igloo or something else that fell off another vehicle in your lane and you need to quickly swerve..
What happens is you are along side someone passing them and they decide to get in yoru lane so you are forced out of your lane in emergency move.
But the SMART MB pulls you right back into this other car and well ACCIDENT..
Had it almost happen to me many times until I turned it off..
Nothing will scare you more then an 18 wheeler moving over into yout lane and yoru car trying to brake you into this truck as you fight both trying to steer away from truck...
also can be a PIA if soemthing is in your lane like truck tire, igloo or something else that fell off another vehicle in your lane and you need to quickly swerve..
Member
Joined: Aug 2019
Posts: 122
Likes: 26
From: Miami, FL
2020 E63S Wagon, 2021 GLE450
Turn it off....
What happens is you are along side someone passing them and they decide to get in yoru lane so you are forced out of your lane in emergency move.
But the SMART MB pulls you right back into this other car and well ACCIDENT..
Had it almost happen to me many times until I turned it off..
Nothing will scare you more then an 18 wheeler moving over into yout lane and yoru car trying to brake you into this truck as you fight both trying to steer away from truck...
also can be a PIA if soemthing is in your lane like truck tire, igloo or something else that fell off another vehicle in your lane and you need to quickly swerve..
What happens is you are along side someone passing them and they decide to get in yoru lane so you are forced out of your lane in emergency move.
But the SMART MB pulls you right back into this other car and well ACCIDENT..
Had it almost happen to me many times until I turned it off..
Nothing will scare you more then an 18 wheeler moving over into yout lane and yoru car trying to brake you into this truck as you fight both trying to steer away from truck...
also can be a PIA if soemthing is in your lane like truck tire, igloo or something else that fell off another vehicle in your lane and you need to quickly swerve..
in this case, all the radar systems see what is going on and react accordingly. This system works in conjunction with many other systems. It won’t push you into an accident
Out Of Control!!
Joined: Nov 2018
Posts: 11,468
Likes: 5,357
From: San Francisco Bay Area
2019 C63CS
Turn it off....
What happens is you are along side someone passing them and they decide to get in yoru lane so you are forced out of your lane in emergency move.
But the SMART MB pulls you right back into this other car and well ACCIDENT..
Had it almost happen to me many times until I turned it off..
Nothing will scare you more then an 18 wheeler moving over into yout lane and yoru car trying to brake you into this truck as you fight both trying to steer away from truck...
also can be a PIA if soemthing is in your lane like truck tire, igloo or something else that fell off another vehicle in your lane and you need to quickly swerve..
What happens is you are along side someone passing them and they decide to get in yoru lane so you are forced out of your lane in emergency move.
But the SMART MB pulls you right back into this other car and well ACCIDENT..
Had it almost happen to me many times until I turned it off..
Nothing will scare you more then an 18 wheeler moving over into yout lane and yoru car trying to brake you into this truck as you fight both trying to steer away from truck...
also can be a PIA if soemthing is in your lane like truck tire, igloo or something else that fell off another vehicle in your lane and you need to quickly swerve..
Junior Member
Joined: Mar 2018
Posts: 55
Likes: 4
From: NY
2019 AMG E63S
This is the very reason why I didn't order any of the cruise, lane departure safety options on my 2019 E63s. I figured it would be an annoyance and turn it off - so why pay for it. I know from a resale perspective it may shave some off the price, but I enjoy driving this car so much that I am not sure I will ever sell it.
MBWorld Fanatic!
Joined: May 2017
Posts: 1,726
Likes: 605
From: Southern California
2018 E63S AMG
I keep mine turned off normally and the lane departure feature doesn't engage or become intrusive.
The Distronic cruise features and self driving bits are nice during heavy traffic to keep the car at a distance from whoever you're following without constantly adjusting the cruise control. Nice on open highways too where you can munch a sandwich or drink a beverage or whatnot and let the car do its thing for a few seconds.
For what it's worth, for fun I tested to see what happens if you don't grab the wheel when prompted. The car will eventually brake and haul the car to a stop. Not a surprise.
While you can turn off the lane departure warning, the anti-collision feature remains engaged. I think you can turn down the sensitivity a bit, but not sure that you can turn it off all together.
If you're spiritedly driving through traffic and shooting for a gap and planning an aggressive lane change, be advised that the car will engage the seat belt tensioners, slam on the brakes and perform various other bits of chicanery that might actually cause an accident if you're cutting too fine of a gap between cars. Makes the lane departure warning seem quite mild in comparison.
The Distronic cruise features and self driving bits are nice during heavy traffic to keep the car at a distance from whoever you're following without constantly adjusting the cruise control. Nice on open highways too where you can munch a sandwich or drink a beverage or whatnot and let the car do its thing for a few seconds.
For what it's worth, for fun I tested to see what happens if you don't grab the wheel when prompted. The car will eventually brake and haul the car to a stop. Not a surprise.
While you can turn off the lane departure warning, the anti-collision feature remains engaged. I think you can turn down the sensitivity a bit, but not sure that you can turn it off all together.
If you're spiritedly driving through traffic and shooting for a gap and planning an aggressive lane change, be advised that the car will engage the seat belt tensioners, slam on the brakes and perform various other bits of chicanery that might actually cause an accident if you're cutting too fine of a gap between cars. Makes the lane departure warning seem quite mild in comparison.
Member
Joined: May 2019
Posts: 197
Likes: 108
From: Toronto, ON, Canada
2020 AMG E63S Wagon, 2021 Subaru Outback Limited XT
Ivan MacKenzie.
MBWorld Fanatic!
Joined: May 2017
Posts: 1,726
Likes: 605
From: Southern California
2018 E63S AMG
Unless something has changed in the 2019 and 2020 models the ECO and Glide modes don't work in cruise control mode - even when ECO and Comfort mode are on.
There was a series of posts that covered this a year ago or so where several of us did some experiments.
You can get the car in 4-cylinder mode briefly when you enter cruise control mode, but as soon as any condition that requires 8-cylinder mode comes along the car will leave 4-cylinder mode and never return.
Leaving cruise control mode and driving manually the 4-cylinder mode and glide mode go back to working again. Enter cruise control mode and poof, they stop working again.
Fuel economy is better when you're driving manually in a conservative mode than letting the car drive.
That said, if I was that worried about it, I'd be driving a Smart Car ;-)
There was a series of posts that covered this a year ago or so where several of us did some experiments.
You can get the car in 4-cylinder mode briefly when you enter cruise control mode, but as soon as any condition that requires 8-cylinder mode comes along the car will leave 4-cylinder mode and never return.
Leaving cruise control mode and driving manually the 4-cylinder mode and glide mode go back to working again. Enter cruise control mode and poof, they stop working again.
Fuel economy is better when you're driving manually in a conservative mode than letting the car drive.
That said, if I was that worried about it, I'd be driving a Smart Car ;-)
MBWorld Fanatic!
Joined: Sep 2018
Posts: 3,247
Likes: 933
From: New Orleans Area
2015 E400 Sedan
the radar does not do anything and yeah I had to clean my drawers twice while driving....when 18 wheeler ran me off the road and car want me to drive under truck...
Radar does not see dead tires in road either.
So from now on... Lane Departure is turned off on my ride...
Glad they fixed it in later years
Member
Joined: May 2019
Posts: 197
Likes: 108
From: Toronto, ON, Canada
2020 AMG E63S Wagon, 2021 Subaru Outback Limited XT
2020 MY Bug Fix?
Unless something has changed in the 2019 and 2020 models the ECO and Glide modes don't work in cruise control mode - even when ECO and Comfort mode are on.
There was a series of posts that covered this a year ago or so where several of us did some experiments.
You can get the car in 4-cylinder mode briefly when you enter cruise control mode, but as soon as any condition that requires 8-cylinder mode comes along the car will leave 4-cylinder mode and never return.
Leaving cruise control mode and driving manually the 4-cylinder mode and glide mode go back to working again. Enter cruise control mode and poof, they stop working again.
Fuel economy is better when you're driving manually in a conservative mode than letting the car drive.
That said, if I was that worried about it, I'd be driving a Smart Car ;-)
There was a series of posts that covered this a year ago or so where several of us did some experiments.
You can get the car in 4-cylinder mode briefly when you enter cruise control mode, but as soon as any condition that requires 8-cylinder mode comes along the car will leave 4-cylinder mode and never return.
Leaving cruise control mode and driving manually the 4-cylinder mode and glide mode go back to working again. Enter cruise control mode and poof, they stop working again.
Fuel economy is better when you're driving manually in a conservative mode than letting the car drive.
That said, if I was that worried about it, I'd be driving a Smart Car ;-)
While I never saw glide mode during this trip, I believe I understand the reason for this: no matter what, glide mode will not activate if the engine is already in 4-cylinder mode. I played a lot with this over the last weeks of doing this "COVID commute" (driving my brother to/from work so that he doesn't have to take public transit) and glide mode only ever activates if the engine is running on all 8 cylinders as you back off on the gas.
Ivan MacKenzie.
Super Member
Joined: Mar 2005
Posts: 551
Likes: 160
From: NYC area
2019 E63S wagon; 2016 Landrover Landmark
I almost never use cruise control or driver's assist. I thought I would love it, but unless I turn it all off when I don't want it, the braking pops in sometimes when it seems unnecessary. However on long-haul drives, the assist is nice.
