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Distronic/AutoPilot woes

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Old Mar 29, 2018 | 10:21 AM
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Distronic/AutoPilot woes

I recently switched from an Alfa Romeo with adaptive cruise control to the new E class. Most of my driving is bumper to bumper during rush hour. I've become hooked on adaptive cruise control and semi-autonomous driving. I've noticed on the Alfa and suprisingly on the Mercedes that if a car cuts in front you and is half way in your lane these cars do not sense them easily. This morning I got to about a foot away from the car in front of me before I had to stomp on the brake manually. You would think at this point these would be able to sense a large object in front of them. Makes me think of the unfortunate death caused by the Uber self driving car. I guess it is still a work in progress.
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Old Mar 29, 2018 | 10:49 AM
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Originally Posted by 2020
I recently switched from an Alfa Romeo with adaptive cruise control to the new E class. Most of my driving is bumper to bumper during rush hour. I've become hooked on adaptive cruise control and semi-autonomous driving. I've noticed on the Alfa and suprisingly on the Mercedes that if a car cuts in front you and is half way in your lane these cars do not sense them easily. This morning I got to about a foot away from the car in front of me before I had to stomp on the brake manually. You would think at this point these would be able to sense a large object in front of them. Makes me think of the unfortunate death caused by the Uber self driving car. I guess it is still a work in progress.
Drive Pilot is a driver assistance function not a self driving mode. The car has short, long, mix mode radar, and two stereo cameras up the front so you can bet it saw the car coming, as to why it didn't react, I don't know, I guess the car doesn't know how to tell apart a$$hole drivers from non-a$$hole drivers, so it didn't brake, and probably isn't programmed to do it in such situations, drive pilot is by far the most technologically advanced driving assistance system on the market today, it's leaps and bounds ahead of tesla's 12 ultrasonic sensors (lol).
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Old Mar 29, 2018 | 05:34 PM
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Originally Posted by W213Sal
Drive Pilot is a driver assistance function not a self driving mode. The car has short, long, mix mode radar, and two stereo cameras up the front so you can bet it saw the car coming, as to why it didn't react, I don't know, I guess the car doesn't know how to tell apart a$$hole drivers from non-a$$hole drivers, so it didn't brake, and probably isn't programmed to do it in such situations, drive pilot is by far the most technologically advanced driving assistance system on the market today, it's leaps and bounds ahead of tesla's 12 ultrasonic sensors (lol).
If it "saw the car coming" then what good is the system. The first priority is safety. If it cannot react to a large object in front of you then it is worthless. I really don't care if it can self drive on the highway, change lanes, self park, etc but cannot react to a potentially dangerous situation. If these systems don't address this, then society in general will be leary of approving self driving cars from using our public roadways.
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Old Mar 29, 2018 | 06:37 PM
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So what is your spacing setting? The short setting is very short while the longest setting is what most people would consider normal. I've experimented with this using a child's punching toy as the obstacle. On the shortest setting there was only a few inches remained between the obstacle and the car when it stopped with full braking. I would never use that setting out of concern of following vehicles. I use the longest setting which leaves about 15 feet between the obstacle and the car using more moderate braking. I suggest that everyone experiment these safety settings so they will not be surprised by the results.
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Old Mar 30, 2018 | 05:05 AM
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It seems that the feature is not perfect ON PURPOSE.
because it's not working 100pct perfectly, it forces you to remain vigilant at all times,
so no risk of you falling asleep
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Old Mar 30, 2018 | 07:14 AM
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As per others, I have experience with the distronic system on a 215, and distronic plus on both a 221 and a facelift 204. They all behave the same.

They often fail to react when a car cuts in front of another car, or take a long time to react when a car moves out of your lane. The 221 has short and long range radar, which replace the parking sensors, and seems to be a bit better in very slow traffic than the 204.
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Old Apr 3, 2018 | 02:33 PM
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Exclamation Surprise!

Originally Posted by 2020
I recently switched from an Alfa Romeo with adaptive cruise control to the new E class. Most of my driving is bumper to bumper during rush hour. I've become hooked on adaptive cruise control and semi-autonomous driving. I've noticed on the Alfa and suprisingly on the Mercedes that if a car cuts in front you and is half way in your lane these cars do not sense them easily. This morning I got to about a foot away from the car in front of me before I had to stomp on the brake manually. You would think at this point these would be able to sense a large object in front of them. Makes me think of the unfortunate death caused by the Uber self driving car. I guess it is still a work in progress.
I believe that I recall a commenter in the C-Class (W205) forum describing a nasty scare from the opposite problem. The car in front of him turned off the road, thereby revealing the car in front of him. The newly revealed car was stopped! It seems that for the Distronic+ system to recognize an object as a stopped vehicle, it has to have been tracking the object while it was still moving. Makes sense -- otherwise, it would react to every tree and fence post on a curve. But, face it, a lot of human drivers have been caught out in that situation.
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Old Apr 4, 2018 | 11:17 PM
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Originally Posted by 2020
I recently switched from an Alfa Romeo with adaptive cruise control to the new E class. Most of my driving is bumper to bumper during rush hour. I've become hooked on adaptive cruise control and semi-autonomous driving. I've noticed on the Alfa and suprisingly on the Mercedes that if a car cuts in front you and is half way in your lane these cars do not sense them easily. This morning I got to about a foot away from the car in front of me before I had to stomp on the brake manually. You would think at this point these would be able to sense a large object in front of them. Makes me think of the unfortunate death caused by the Uber self driving car. I guess it is still a work in progress.
That’s depends on what speed you are doing. It is semiautonomous and have limitations. They are fully disclosed in the user manuals but can be a bit frustrating sometimes. I totally drive with it every chance I have. The steering wheel and all associated hardware including the stalk to activate drive pilot on the Tesla is all MB.
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