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      07-11-2016, 10:06 AM   #1
djseto
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Forward Collision Warning Question...

I just picked up a 2013 CPO that has the FCW option (non auto braking version) as part of the Drivers Assistance Package.

Does anyone know where I can get more technical information about it (distance for each setting ,etc.)? More specifically, I have it turned on and set to Early, but I have yet to see it go off in what I consider to be an Early situation. I tried it out today with no braking as I approached a stopped car or slowing down car in traffic (I had my foot ready to brake but not on the brake and made sure no one was behind me). The warning came on but if that's what Early is, I'd hate to see what Late looks like because Early was maybe 1.5-2.5 car lengths at best. Even then, it was the warning stage (no audible sound).

A week into owning my CPO, I just want to make sure everything works as it's supposed to. The manual doesn't really provide much detail around the conditions that trigger it. For example, does it work above certain speeds only?

thanks!
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      07-11-2016, 10:16 AM   #2
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It really depends on the rate of speed in which you are traveling, and how sudden the car in front of you decelerates.

Often times, if you try to "test" the system by approaching a stopped car; it will not result in how you believe it should behave.

For me the front collision warning comes on when someone cuts in front of me, or when traffic suddenly slows down without warning.

Other times, it provides a false warning from oncoming vehicles
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      07-11-2016, 10:20 AM   #3
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go to setting in iDrive and you can change ealy or late detection of front collision warning. If you tail someone closely on the highway you will see it pop up.
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      07-11-2016, 10:42 AM   #4
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Quote:
Originally Posted by KMORGSM5 View Post
go to setting in iDrive and you can change ealy or late detection of front collision warning. If you tail someone closely on the highway you will see it pop up.
Yeh. I have it set to Early now. My model year doesn't have an iDrive setting to adjust it. When I turn it on by pushing the button to the left of the steering column, it brings up the setting on the screen.

I haven't noticed come on when tailgating anyone on the highway.
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      07-11-2016, 04:30 PM   #5
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so does the system apply brakes or not? It appears to when I pull into my garage so I've never hit the foam bumpers I put in on the wall. but I just don't know if it works while on the highway or low speed roads
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      07-11-2016, 04:38 PM   #6
djseto
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Quote:
Originally Posted by supershaft View Post
so does the system apply brakes or not? It appears to when I pull into my garage so I've never hit the foam bumpers I put in on the wall. but I just don't know if it works while on the highway or low speed roads
The newer model years have a system that brakes. Mine doesnt have Active Cruise Control (Radar based). It uses the camera that's part of the lane departure system. The 2013 doesnt have any auto braking.
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      07-11-2016, 09:35 PM   #7
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What's newer? 2014?

Quote:
Originally Posted by djseto View Post
The newer model years have a system that brakes. Mine doesnt have Active Cruise Control (Radar based). It uses the camera that's part of the lane departure system. The 2013 doesnt have any auto braking.
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      07-12-2016, 07:50 AM   #8
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Quote:
Originally Posted by Hellrot Sachin View Post
What's newer? 2014?
Not sure what year it was changed but if I build a new M5 now online, it shows Driver Assistance Plus which includes auto braking. Definitely not something on the 2013.
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      07-13-2016, 09:20 AM   #9
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It would be nice if the older system could be "Flashed" updated to enable an "Audible" Alert along with the Visual alert. I for one would take advantage of this and ask the dealer to update my car's warning notice.

Collision Avoidance should be standard on every new car/truck sold if you ask me. Just as the "Third Brake Light" reduced rear-end collisions,...."CA" would greatly reduce "Front-End Collisions across the board. Just say'n!
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      07-13-2016, 12:17 PM   #10
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According to my owners manual, the older system does have an audible alert when you reach the "acute warning stage". I haven't risked getting that far...
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      07-13-2016, 03:44 PM   #11
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Quote:
Originally Posted by djseto View Post
According to my owners manual, the older system does have an audible alert when you reach the "acute warning stage". I haven't risked getting that far...
This is true. I had a car swerve in front of me and cut me off a few weeks ago. I braked hard and it was close and I heard the high pitched alarm beep for the first time.
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      07-13-2016, 03:46 PM   #12
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Quote:
Originally Posted by JMD View Post
It would be nice if the older system could be "Flashed" updated to enable an "Audible" Alert along with the Visual alert. I for one would take advantage of this and ask the dealer to update my car's warning notice.

Collision Avoidance should be standard on every new car/truck sold if you ask me. Just as the "Third Brake Light" reduced rear-end collisions,...."CA" would greatly reduce "Front-End Collisions across the board. Just say'n!
It does have an audible alert if you get close enough. High pitched monotone beeeeeeeeep . Experienced it in my 2013 a few weeks ago.
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      07-13-2016, 04:53 PM   #13
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Quote:
Originally Posted by BMWM5NYC View Post
It does have an audible alert if you get close enough. High pitched monotone beeeeeeeeep . Experienced it in my 2013 a few weeks ago.
How close did you get? I've come within half a car length and only get the "warning" light and I have it set to "early" for warning distance...
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      07-13-2016, 06:00 PM   #14
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Quote:
Originally Posted by djseto View Post
How close did you get? I've come within half a car length and only get the "warning" light and I have it set to "early" for warning distance...
I was about a car length and I was on the brakes pretty hard. I had always gotten the Red Car symbol, but this was the first time it BEEEEEEEEEEEEPED . I think it has to do with your rate of deceleration.
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      08-25-2016, 03:20 PM   #15
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Took my car in today to see if there was an update to get Album Art to show up via Bluetooth (I've seen this work in new loaner cars). Sadly, it did not enable that functionality, however on the way home, the forward collision icon lit up when I got too close to car. In addition to that, I also lost and gained a few things I've found in the Nav system.
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      09-25-2016, 07:39 AM   #16
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Quote:
Originally Posted by BMWM5NYC View Post
I was about a car length and I was on the brakes pretty hard. I had always gotten the Red Car symbol, but this was the first time it BEEEEEEEEEEEEPED . I think it has to do with your rate of deceleration.
BMWM5NYC, I believe it's based on the "closing speed" to impact said object! If the closing speed predicts a crash,...the Red Car warning pops up,...and blinks rapidly (with ditto for audible alert),...even if you're farther away from the vehicle ahead. The system probably has the M5's minimum 60-0 stopping distance programmed,...as well as, and also takes the vehicle's speed into account and initial distance of your car to the vehicle in the same lane!

The field of view for the camera is quite narrow,...as it's amazing that it stays within the confines of one lane.
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