Can i Permanently Shut Off Collision Prevention Assist Plus?
Thread Starter
Senior Member
Joined: May 2016
Posts: 397
Likes: 32
From: California
2016 E 250 Bluetec
Can i Permanently Shut Off Collision Prevention Assist Plus?
Hey guys,
I have 2016 model which is equipped with the Collision Prevention Assist Plus PRE SAFE feature, when a speeding vehicle approaches from behind and gets too close (which happens a lot in L.A.) the vehicle brakes and tightens the seat belt quite harshly anticipating an impact. I do not enjoy this or need it none the less. When i disable this function, it restarts again when i turn the car back on. Is there a way to permanently disable this function without going to the dealer for it ?
Thanks
I have 2016 model which is equipped with the Collision Prevention Assist Plus PRE SAFE feature, when a speeding vehicle approaches from behind and gets too close (which happens a lot in L.A.) the vehicle brakes and tightens the seat belt quite harshly anticipating an impact. I do not enjoy this or need it none the less. When i disable this function, it restarts again when i turn the car back on. Is there a way to permanently disable this function without going to the dealer for it ?
Thanks
MBWorld Fanatic!
Joined: Jun 2015
Posts: 1,523
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From: New Jersey
2010 E550 P2 w/AMG Sport Package + Pano, 2015 Nissan Pathfinder
Hey guys,
I have 2016 model which is equipped with the Collision Prevention Assist Plus PRE SAFE feature, when a speeding vehicle approaches from behind and gets too close (which happens a lot in L.A.) the vehicle brakes and tightens the seat belt quite harshly anticipating an impact. I do not enjoy this or need it none the less. When i disable this function, it restarts again when i turn the car back on. Is there a way to permanently disable this function without going to the dealer for it ?
Thanks
I have 2016 model which is equipped with the Collision Prevention Assist Plus PRE SAFE feature, when a speeding vehicle approaches from behind and gets too close (which happens a lot in L.A.) the vehicle brakes and tightens the seat belt quite harshly anticipating an impact. I do not enjoy this or need it none the less. When i disable this function, it restarts again when i turn the car back on. Is there a way to permanently disable this function without going to the dealer for it ?
Thanks
MBWorld Fanatic!
Joined: Feb 2014
Posts: 1,306
Likes: 40
E 350
BTW, I've seen a few stickers on cars that say..... If you can read this you are too close ......
The closer you come, the slower I go .....
.
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'17 Jaguar XF
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Thread Starter
Senior Member
Joined: May 2016
Posts: 397
Likes: 32
From: California
2016 E 250 Bluetec
Oh and i never "hypermile", i did not buy a Diesel to drive in the slow lane or slow in general. There are other reasons why i purchased a Diesel besides just getting good MPG.
But i love how guys with 550s talk like they drive Ferraris, lol give me a break.
Last edited by Diesel #2; May 20, 2016 at 04:22 PM.
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Joined: Jun 2015
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From: New Jersey
2010 E550 P2 w/AMG Sport Package + Pano, 2015 Nissan Pathfinder
I think they're just kidding around. I did agree that the feature seems silly if it's doing as you said it was. Good luck but as some one said you might just have to disable it each time you start up. It's kind of like the Eco Start/Stop item that many have debated over the need to perm disable.
Last edited by jahquan3; May 20, 2016 at 04:43 PM.
Thread Starter
Senior Member
Joined: May 2016
Posts: 397
Likes: 32
From: California
2016 E 250 Bluetec
Yeah ill give the dealer a call tomorrow and see if there is something they can do, it's not something that is happening constantly, the system kicked in twice so far. One time as i was approaching a vehicle and wanted to make a fairly quick lane change, i guess i got within the parameters of the sensors as i went to switch lanes and the vehicle braked hard from 60 mph to about 35mph.
Last edited by Diesel #2; May 20, 2016 at 06:50 PM.
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From: MA
2008 E350 4Matic, 2011 E350 4matic
There are a lot of systems in the car and I think you may be confusing and combining a few of them. You are probably encountering pre-safe plus which tightens the seat belts if it detects an impending rear end collision. If the brakes are applied when the vehicle is stationary, it increases the pressure so it's not really brake checking a car. For the collision prevention assist, I can see it applying the brakes because you are closing too fast on the car in front of you. It's probably not use to people driving like maniacs, we call it cowboying around here when people switch lanes quickly to maneuver around traffic. It can get you a ticket if you do it too much around a cop. As others said, the dealer probably won't do it, but I bet it's probably in some Star Diagnostic system somewhere. You can buy a knock off system or get a system from members of this forum. They probably range anywhere from $350-$750 or more for a legit version.
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From: Huntington Beach, Ca.
'17 Jaguar XF
I'll buy this one after his follow up posts............
MBWorld Fanatic!
Joined: Feb 2014
Posts: 6,190
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From: MA
2008 E350 4Matic, 2011 E350 4matic
I think it's two separate systems and he is confusing the two or they both happened at the same time. If collision prevention assist plus is kicking in, it's kicking it because he's approaching the car in front too fast. So it brakes. However if in that same time, some other car is approaching from the rear quick, as in a typical chain reaction braking sequence, it's tightening up the seat belts because of pre-safe plus. It's not pre-safe plus tightening up seat belts and brake checking a guy. I bet if someone flew up on you without any traffic in front, it wouldn't apply any brakes, just tighten up the seat belts. So that's why I think he's confusing the two, two separate systems combined into one reaction.
Senior Member
Joined: Feb 2016
Posts: 468
Likes: 68
From: UK
E250 AMG Sport Convertible
I think it's two separate systems and he is confusing the two or they both happened at the same time. If collision prevention assist plus is kicking in, it's kicking it because he's approaching the car in front too fast. So it brakes. However if in that same time, some other car is approaching from the rear quick, as in a typical chain reaction braking sequence, it's tightening up the seat belts because of pre-safe plus. It's not pre-safe plus tightening up seat belts and brake checking a guy. I bet if someone flew up on you without any traffic in front, it wouldn't apply any brakes, just tighten up the seat belts. So that's why I think he's confusing the two, two separate systems combined into one reaction.
This means the people racing up your rear end is far more difficult to stop and they don't want to leave any sort of a safe distance.
Thread Starter
Senior Member
Joined: May 2016
Posts: 397
Likes: 32
From: California
2016 E 250 Bluetec
If collision prevention assist plus is kicking in, it's kicking it because he's approaching the car in front too fast. So it brakes. However if in that same time, some other car is approaching from the rear quick, as in a typical chain reaction braking sequence, it's tightening up the seat belts because of pre-safe plus. It's not pre-safe plus tightening up seat belts and brake checking a guy.
I will keep the system on for now and see if it happens again from an oncoming vehicle. But im amazed at how smart this vehicle is. Kudos to Mercedes for trickling down many technologies that are found in the S Class.
Last edited by Diesel #2; May 21, 2016 at 09:08 AM.
Super Member
Joined: Mar 2011
Posts: 998
Likes: 136
From: VA
W212 E-class, W211 E-class, F10 5-Series
Hey guys,
I have 2016 model which is equipped with the Collision Prevention Assist Plus PRE SAFE feature, when a speeding vehicle approaches from behind and gets too close (which happens a lot in L.A.) the vehicle brakes and tightens the seat belt quite harshly anticipating an impact. I do not enjoy this or need it none the less. When i disable this function, it restarts again when i turn the car back on. Is there a way to permanently disable this function without going to the dealer for it ?
Thanks
I have 2016 model which is equipped with the Collision Prevention Assist Plus PRE SAFE feature, when a speeding vehicle approaches from behind and gets too close (which happens a lot in L.A.) the vehicle brakes and tightens the seat belt quite harshly anticipating an impact. I do not enjoy this or need it none the less. When i disable this function, it restarts again when i turn the car back on. Is there a way to permanently disable this function without going to the dealer for it ?
Thanks
MBWorld Fanatic!
Joined: Dec 2015
Posts: 1,190
Likes: 68
From: Charlotte, NC
2014 E350 4M Diamond Silver
MBWorld Fanatic!
Joined: Dec 2015
Posts: 1,190
Likes: 68
From: Charlotte, NC
2014 E350 4M Diamond Silver
oh, wow, that is bad. you have warranty, right? here is where the ELW gets paid off, lol. those sensors are around 1200-1500, based on what I read here on the forum.
I was as an intersection in traffic, used the hold feature, then when moving, I used the cruise control ( I was already less than 20mph), so, the distronic plus kicked in, and applied brakes, when the vehicle in front of me stopped.
Try at slower speeds, if it still doesn't work, make an appointment and take it to the dealer.
I was as an intersection in traffic, used the hold feature, then when moving, I used the cruise control ( I was already less than 20mph), so, the distronic plus kicked in, and applied brakes, when the vehicle in front of me stopped.
Try at slower speeds, if it still doesn't work, make an appointment and take it to the dealer.
