Collision Prevention Assist
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2015 c class
Collision Prevention Assist
I have a 2015 c300. At Radom times,often on a straight road with no cars around me and nothing in front of me the red light on the dash lights for a couple seconds and the audible alert sounds for the collision prevention system. The car does not break or anything like that I just get the audible and visual alerts.of course it doesn't happen when the dealer drives it and they say no codes have been thrown off so there's nothing they can do. It may go a week or two and not do it and then it may do it three or four times over the next couple days. Anyone encounter this any feedback or suggestions?
I also asked the dealer if there's a way to test to see if the actual breaking would work if I'm about to encounter another car, I could not get a straight answer out of him as to anyway to effectively test.
I also asked the dealer if there's a way to test to see if the actual breaking would work if I'm about to encounter another car, I could not get a straight answer out of him as to anyway to effectively test.
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Mercedes benz c300 2015
I only hear that audible alert when im still going the speed limit or a little under and a car decides to turn into McDonald's slow as hell.
If your looking to test the system find a good stretch of road that is not being used. Maybe behind Walmart or behind a huge plaza where the trucking bays are. Be sure to find a huge inflatable item, something that is soft and can be found in the pool area of a store. The inflatable only has to be the size of a child, not the size of a s class tail end.
If your looking to test the system find a good stretch of road that is not being used. Maybe behind Walmart or behind a huge plaza where the trucking bays are. Be sure to find a huge inflatable item, something that is soft and can be found in the pool area of a store. The inflatable only has to be the size of a child, not the size of a s class tail end.
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I think under driving assistance menu. For me it was Attention Assist. May have to get back to car to confirm. I play with that setting once, put it to higher sensitivity and it was beeping at everything so I change it back to default.
It's still too sensitive for my liking but at least it does warn me if I come up to a car too fast.
It's still too sensitive for my liking but at least it does warn me if I come up to a car too fast.
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I think under driving assistance menu. For me it was Attention Assist. May have to get back to car to confirm. I play with that setting once, put it to higher sensitivity and it was beeping at everything so I change it back to default.
It's still too sensitive for my liking but at least it does warn me if I come up to a car too fast.
It's still too sensitive for my liking but at least it does warn me if I come up to a car too fast.
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'15 Black w205 C300, '02 E46 M3, '94 FD3S RX7
Buy a large cardboard box, don't fold the ends in, just open it so its a big square tube. Stand that up in a parking lot and run at it. See if it stops. If it doesn't, nothing will be hurt, the box will fold flat and you'll run over it
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From: North San Diego, CA
2015 C300
i dont think you can change the sensitivity...i think that becomes a liability issue. if you are allowed to change that kind of safety feature, i imagine it would open up all kinds of lawsuits when "i rear ended this car because the dealer must have accidentally changed the sensitivity" or some bullsh**
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Mercedes benz c300 2015
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C350e
I get sometimes a false warning also (maybe one every two weeks or so), but in comparison to all the warnings i get for real situations that i really need it.
I never had it break unnecessarily.
To me the system works perfectly. The false warnings i get don't bother me.
It might be that your radar is a bit more sensitive than usual and picks up debris.
I can imagine the number of false alerts you get are annoying.
I never had it break unnecessarily.
To me the system works perfectly. The false warnings i get don't bother me.
It might be that your radar is a bit more sensitive than usual and picks up debris.
I can imagine the number of false alerts you get are annoying.
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C350e
The response of the system is also depending on the responsiveness of the driver. The less active the driver, the more responsive the system gets.
So if you let go of the accelerator or take an evasive action when approaching the box it might not or respond later.
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Mercedes benz c300 2015
I would advise putting some foam in front of a cardboard box. Idk what kind of cardboard you have in mine but the one I'm thinking is the same hard cardboard box my tv came in. I'm telling you now, if hitting a cardboard box full throttle with your fist hurts then hitting it with a car going 40 will cause something in the grill area pushed in or at least the chrome being knocked off the star.
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Mercedes benz c300 2015
Ohhhh I think I might understand what your saying a little better now. Your saying have all the inserts folded out and line the box up so once you hit the box it will collapse flat and be ran over .
This would be the cheapest and safe route in my opinion as well
This would be the cheapest and safe route in my opinion as well
Last edited by Mplayers2006; Jul 5, 2016 at 06:56 PM.
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Sounds like something a person always suggests another person try and never would do themselves.
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Be careful if anyone tries the test. Collision Prevention Assist (CPA) is not the same at PreSafe Brake, which is much more capable. PreSafe Brake operates at higher speeds and provides full autonomous braking if necessary. CPA is standard. PreSafe Brake is only available with the Driver Assisrtance Package. If you don't have the Drivers Assistance Package, you will likely be warned as you approach the cardboard target and slowed somewhat, right before you run into it.
Last edited by BenzC400; Jul 5, 2016 at 09:05 PM.
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2003 CL 600
Have your software updated if you haven't, we are updating that system all the time in the workshop, it's a work in progress to get the balance of sensitivity just right it seems. Mention that it drops out from time to time when you go for your next service, they should update the controller to the latest version as the first step in the diagnostic process. Might help, certainly shouldn't hurt.
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