[hyperzulu]

Originally Posted by pikcachu

I think it's km/h in some period of time...

there are only 3 options 32 15 or 5.....
so if you are going 80km/h you would need to drop to 65km/h if you have setting of 15...

that's my guess but comments on the coding feature were not very explanatory

Right. That's what I read as well, but I don't understand what they actually mean. 5km is 3mph and 32 is 20mph. I suppose it measures the brake force applied that would yield a reduction of speed at the given value over a period of time, but I reduce my speed by 3mph all the time without triggering it. 3mph is a very low number. It would have to be 3mph in a very small amount of time. Then assuming that same small amount of time is used to a value of 32 = 20mph, it's hard to imagine reducing my speed by that much. It would have to be a 20mph reduction in like a quarter of a second. That seems way too aggressive.

I also thought maybe those values are the threshold for which it will apply - as in it won't ever activate unless you're above that speed, and the force needed to activate it is not something you can actually change. But I didn't experiment with this enough to test the theory.

[BMW335iOn18s]

It's against regulations I believe, since it's coded off for US models. Instead, the rear fogs turn on.

I have it coded on my car, however.

[mmmmm235i]

As far as I know BMWs have had this feature for years. You definitely have to be hard on the brakes. In my last car (e90) it could be coded out, but otherwise standard.