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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 05-18-2010, 11:37 PM   #1
iansanderson
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tested my Roll-Over Protection System tonight (video)

jbeurotech had mentioned in another post that testing the "Überroll-Schutzsystem" on the convertibles was part of BMW's Inspection criteria... which gave me a perfect excuse to try it out! I have never seen it in action and often wondered how much protection it could offer in a rollover situation. So without further ado, here is a short video I made. My friends made fun of me, as usual. but who cares.

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Old 05-18-2010, 11:45 PM   #2
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Very cool, didnt know they were testable.
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Old 05-18-2010, 11:47 PM   #3
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That video is great, thanks for sharing. Pretty neat seeing those in action.
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Old 05-19-2010, 12:32 AM   #4
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Wait so..these actually exist on the market or no? I was listening but i wasnt listening...more of watching. Very cool.
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Old 05-19-2010, 12:41 AM   #5
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So what did you do to test it?
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Old 05-19-2010, 12:50 AM   #6
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I remember the first time I had those things pop up, unexpectedly. It's part of the convertible owner's ownership experience.
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Old 05-19-2010, 01:35 AM   #7
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I remember the first time I had those things pop up, unexpectedly. It's part of the convertible owner's ownership experience.
so what if they randomly go off when the top is up?
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Old 05-19-2010, 03:24 AM   #8
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so what if they randomly go off when the top is up?
thats an interesting question....
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Old 05-19-2010, 06:02 AM   #9
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Nice video. How did u do that?
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Old 05-19-2010, 06:41 AM   #10
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i'd like to know as well.
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Old 05-19-2010, 06:47 AM   #11
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so what if they randomly go off when the top is up?
This happened to me lol, but it wasn't random.. One night, I took a turn going about 30 and didn't know that the street I was turning onto had a median, so I hit the median's curb head on and heard a gunshot noise then slid about 30 ft on the grass... Didn't even notice the rollover bars had shot up until I tried to put the top down the next morning, they were physically in the way of the top and it wouldn't let it retract. I didn't know it was that easy to put them back down, the Indy shop I took my car to charged me $90 (1hr labor) to reset them!!

I never knew you could test them, how did you do it iansanderson??
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Old 05-19-2010, 08:34 AM   #12
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when I read the title, I thought someone had actually rolled their convertible
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Old 05-19-2010, 10:25 AM   #13
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Yeah I do not have sound here at work so I can not tell how you triggered them, I would love to know how. My roll bar light is on and I want to cycle them to see if it resets the light.
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Old 05-19-2010, 11:31 AM   #14
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Originally Posted by alibusoul View Post
This happened to me lol, but it wasn't random.. One night, I took a turn going about 30 and didn't know that the street I was turning onto had a median, so I hit the median's curb head on and heard a gunshot noise then slid about 30 ft on the grass... Didn't even notice the rollover bars had shot up until I tried to put the top down the next morning, they were physically in the way of the top and it wouldn't let it retract. I didn't know it was that easy to put them back down, the Indy shop I took my car to charged me $90 (1hr labor) to reset them!!

I never knew you could test them, how did you do it iansanderson??
It is quite an amazing system. Activation is very loud and the tubes are massive. It is released by a magnetic latch system. Luckily, they were designed to be very easy to reset in case of a false deployment. I am very happy to see I have it tho. My neighbor has an 04 Mustang convertible with NO rollover system. I thought about how gruesome a rollover accident would be in that thing.. and it's a 2004! BMW has been using a rollover system since the E36's!

As far as activation, many diagnostic tools can do it including INPA, DIS and I think autologic. They can also be manually triggered by removing the seatback and depressing a button with a punch tool.

Quote:
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so what if they randomly go off when the top is up?
well, jbeurotech mentioned that they have been known to shatter the rear window. I guess this was very common on the E36's and less so on our cars. but since the rear window is part of the top ($$$$) and not replaceable, I didn't want to take the chance unless they were really needed.

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Yeah I do not have sound here at work so I can not tell how you triggered them, I would love to know how. My roll bar light is on and I want to cycle them to see if it resets the light.
They can be manually triggered if you do not have a tester. Just make sure they are properly latched back in place. If your car ever got caught in a bad rainstorm, that might have affected them since everything is exposed with vents back there.
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GT1/ISIS/MoDiC = Factory authorized diagnostic system used by BMW dealerships across the world.

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OEM = Genuine BMW part only available from a franchised BMW dealership.

DME = Engine Management Computer
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Old 05-19-2010, 11:33 AM   #15
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Wait so..these actually exist on the market or no? I was listening but i wasnt listening...more of watching. Very cool.
yep. all E46 convertibles have it, and some or most E36's too. Mercedes uses an actual "roll bar" that stretched across the back of the car like this. Of course, I like BMW's better but i'm biased.

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Cheat Sheet:

GT1/ISIS/MoDiC = Factory authorized diagnostic system used by BMW dealerships across the world.

NCS Expert = BMW Factory R&D programming tool available on the internet (not intended for the public and not available to the dealership network)

OEM = Genuine BMW part only available from a franchised BMW dealership.

DME = Engine Management Computer
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Old 05-19-2010, 01:07 PM   #16
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Hey.........

This looks great for the rear passengers. What about the front seat passengers?
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Old 05-19-2010, 01:39 PM   #17
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The A Pillars would hold the car off your head.
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Old 05-19-2010, 10:14 PM   #18
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Great video! Thanks for sharing.....
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Old 05-20-2010, 01:20 AM   #19
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The A Pillars would hold the car off your head.
just hope you're not too tall
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Old 05-20-2010, 04:20 AM   #20
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Much easier to reset than an E36, very cool.
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