S63 AMG, S63 AMG 4Matic, S65 AMG (W222, V222) 2014 -2021

Automatically helped avoid an accident???

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Old Sep 28, 2025 | 12:29 PM
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All Cars Lost To Hurricane Isaac (W124 E420 revived - added 88 Allante 14 S550, 17 S63
Automatically helped avoid an accident???

While driving my s63 amg w222 mercedes, I was on what appeared to be a nearly empty interstate highway very early on a Sunday morning.
Typically I check carefully before changing lanes including my blind spots before activating the turn signal, BUT on an empty road I will go ahead and turn on the signal, and began the motion of changinging lanes BUT still checking everything BEFORE starting the actual lane change. Which is what I did on this early Sunday morning, HOWEVER, just before I started the actual change, my car beeped to let me know a car had actually maneuvered to my side ( proverbial "out of nowhere"). Here is the interesting thing. I swear the steering wheel stiffened to resist me turning it into the other cars lane. To be clear, I would not have made the lane change because my own checking was nearly simultaneous with the cars notification/resistance.

Is this car capable of providing steering wheel resistance to turning into an occupied lane?...
If so, then after all these years, i have never had a reason for this to activate in either w222 i guess.

Last edited by kafklatsch; Sep 28, 2025 at 12:34 PM.
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Old Sep 28, 2025 | 06:08 PM
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Yes, that's the Active Blind Spot Assist. If despite the warning, the driver continues with changing lanes, it will apply a steering torque in the opposite direction to discourage the lane change and to steer you back into your current lane. It's actually using the brakes. It applies the inner front brake to pull you back. It's all explained in the owner's manual. Time to read it after all these years ;-).



Last edited by superswiss; Sep 28, 2025 at 06:10 PM.
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Old Sep 29, 2025 | 03:42 PM
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Originally Posted by superswiss
Yes, that's the Active Blind Spot Assist. If despite the warning, the driver continues with changing lanes, it will apply a steering torque in the opposite direction to discourage the lane change and to steer you back into your current lane. It's actually using the brakes. It applies the inner front brake to pull you back. It's all explained in the owner's manual. Time to read it after all these years ;-).
Dude, how do you keep all this info in your head???
I found the video and never knew about this before today:

Last edited by carlosinseattle; Sep 29, 2025 at 05:57 PM.
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Old Sep 29, 2025 | 03:54 PM
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Originally Posted by carlosinseattle
Dude, how do you keep all this info in your head???
I found the video and never knew about this before today:
Haha. This stuff is easy to remember, because the assistants have the word Active in them. Whenever one of these is called Active something, then it isn't just a passive warning system. MB has both, Blind Spot Assist and Active Blind Spot Assist. The former is standard and the latter comes with the Driver Assistance package. So whenever you see the word Active in the name, you know that it won't just warn you, but actively help you avoid the situation.
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Old Sep 29, 2025 | 04:20 PM
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Originally Posted by superswiss
Haha. This stuff is easy to remember, because the assistants have the word Active in them. Whenever one of these is called Active something, then it isn't just a passive warning system. MB has both, Blind Spot Assist and Active Blind Spot Assist. The former is standard and the latter comes with the Driver Assistance package. So whenever you see the word Active in the name, you know that it won't just warn you, but actively help you avoid the situation.
I think it’s also combined with a bit of nerdiness. I know like to read the manual and my brain will not always remember exact info, but where to find it. In my personal life, sometimes people don’t love a great memory because it moves in a strait line instead of a zig zag. Now, getting the info organized and on paper for others, that’s a skill. I like to talk vs write since simple things can sometimes become long or technical and not quick an concise.

SUPERSWISS, are you positive it’s the front brake? I thought it was the rear brakes and that’s why they wear so fast these days
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Old Sep 29, 2025 | 05:44 PM
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Originally Posted by Baltistyle
SUPERSWISS, are you positive it’s the front brake? I thought it was the rear brakes and that’s why they wear so fast these days
No, not positive that it is the front brake TBH. The rear brakes can be used to induce a yaw moment as well. That's not really the main reason why the rear brakes wear faster these days, though. That's largely down to modern cars not having a fixed brake bias anymore and instead the electronic brake force distribution favors the rear brakes when slowing down moderately. In general, the rear brakes engage first, in order to reduce nose dive when slowing down. It keeps the car more flat and provides more comfort for the occupants.

Last edited by superswiss; Sep 29, 2025 at 05:45 PM.
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Old Sep 29, 2025 | 08:54 PM
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Originally Posted by superswiss
No, not positive that it is the front brake TBH. The rear brakes can be used to induce a yaw moment as well. That's not really the main reason why the rear brakes wear faster these days, though. That's largely down to modern cars not having a fixed brake bias anymore and instead the electronic brake force distribution favors the rear brakes when slowing down moderately. In general, the rear brakes engage first, in order to reduce nose dive when slowing down. It keeps the car more flat and provides more comfort for the occupants.
This is the video from Mercedes for the original tech. Looks like it is both wheels on the opposite side of the "issue" or lane.

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Old Sep 30, 2025 | 01:15 AM
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All Cars Lost To Hurricane Isaac (W124 E420 revived - added 88 Allante 14 S550, 17 S63
Ahhhhhh...superswiss.... who else??...super thank you.... I read 99.99% of the manual, that " musta-been" that 0.01%..wink....

.... it was pretty neat to experience



Originally Posted by superswiss
Yes, that's the Active Blind Spot Assist. If despite the warning, the driver continues with changing lanes, it will apply a steering torque in the opposite direction to discourage the lane change and to steer you back into your current lane. It's actually using the brakes. It applies the inner front brake to pull you back. It's all explained in the owner's manual. Time to read it after all these years ;-).

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