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  #1  
Old 06-07-2015, 05:40 PM
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Forward Collision Warning Problem

I have been having problem with the Forward Collision Warning system as the article described. What are the action I can take?

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  #2  
Old 06-07-2015, 05:44 PM
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Re: Forward Collision Warning Problem

Nothing much to do until they find the cause. Since you say you have been having the problem you should have notified your dealer by now. If not let them know.


It would be your choice if you wanted the dealer to try to find a solution before Jeep engineers do. I would probably wait for Jeep.




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  #3  
Old 06-07-2015, 05:45 PM
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Re: Forward Collision Warning Problem

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Originally Posted by bill_de View Post
Nothing much to do until they find the cause. Since you say you have been having the problem you should have notified your dealer by now. If not let them know.


It would be your choice if you wanted the dealer to try to find a solution before Jeep engineers do. I would probably wait for Jeep.




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Old 06-07-2015, 06:51 PM
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Originally Posted by johnnyiowa View Post
I have been having problem with the Forward Collision Warning system as the article described.
I read that article and I believe I have repeatedly experienced this issue too. The system is just overly paranoid.

Have you set your FCW to "Near" rather than "Far"? That calmed mine down significantly. Almost no false alarms now.

Barring that, I'd wait for the flash.
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Old 06-07-2015, 06:54 PM
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Re: Forward Collision Warning Problem

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Originally Posted by Roadkill View Post
I read that article and I believe I have repeatedly experienced this issue too. The system is just overly paranoid.

Have you set your FCW to "Near" rather than "Far"? That calmed mine down significantly. Almost no false alarms now.

Barring that, I'd wait for the flash.

I think it's Near.


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Old 06-07-2015, 07:05 PM
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Originally Posted by johnnyiowa View Post
I think it's Near.
If it's set to Near and you're still experiencing false alarms then I'd definitely disable the FCW braking aspect (if not just disabling FCW entirely).
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Old 06-07-2015, 07:07 PM
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Re: Forward Collision Warning Problem

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Originally Posted by Roadkill View Post
If it's set to Near and you're still experiencing false alarms then I'd definitely disable the FCW braking aspect (if not just disabling FCW entirely).

There has been couple of time I was driving on the highway with no obstacle in front and the alarm went off.


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Old 06-07-2015, 07:12 PM
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There has been couple of time I was driving on the highway with no obstacle in front and the alarm went off.
Ugh. That must have been "exciting". My typical false alarm came from a vehicle in front of me switching lanes *out* of my lane, or a vehicle in front of me slowing and turning out into a parking lot. Neither of those scenarios were ever anything that even a driver's ed instructor would suggest slowing down for.
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Old 06-08-2015, 03:26 PM
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Re: Forward Collision Warning Problem

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Originally Posted by bill_de View Post
Nothing much to do until they find the cause. Since you say you have been having the problem you should have notified your dealer by now. If not let them know.


It would be your choice if you wanted the dealer to try to find a solution before Jeep engineers do. I would probably wait for Jeep.




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Old 06-09-2015, 04:21 PM
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Re: Forward Collision Warning Problem

No system designed and built by man is idiot proof or fool proof. And even if one was developed, someone would just go and make a better idiot.



I haven't had any false alarms that I can remember. The FCW and ACC did behave strangely once during a very heavy rain downpour. But that rain was probably heavy enough to be picked up as a solid object and that caused the issue.

So far, I really like the FCW and ACC system in my 2015 Overland. But the ultimate responsibility for controlling my vehicle rest with me.
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  #11  
Old 06-11-2015, 11:47 PM
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Re: Forward Collision Warning Problem

I think that I have narrowed down most of my false alarms to when I'm going up a hill with an overpass at the top. The system seems to pick up the overpass and go off.

What bothers me more is when I'm traveling with the ACC on and suddenly the FCW turns itself off, disabling the ACC. After about five minutes, the FCW turns itself back on and everything goes back to normal. Of course, this never happens when I'm close to a dealer and, apparently, no codes are thrown for them to analyze.
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Old 06-12-2015, 12:05 AM
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I think that I have narrowed down most of my false alarms to when I'm going up a hill with an overpass at the top. The system seems to pick up the overpass and go off.
Does the overpass have a reflective sign on it? As far as I understand it, ACC and FCW are actually integrated systems that use the radar as well as a camera. It uses this to determine whether something in front of you is another vehicle vs scenery.

Ever notice how FCW doesn't trigger against construction barrels even if they are directly in front of your path of travel (e.g. at a lane crossover)? I suspect there's an image recognition algorithm that is an input to ACC/FCW that attempts to identify "vehicles", and it likely keys off things that look like reflective license plate rectangles. Again, speculation, but I could imagine coming steeply uphill and having an overpass with a reflective rectangular sign matching algorithmic "stopped vehicle ahead" criteria.
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