For the record, I was talking about brake assist, not ABS, a different matter altogether.
When the brake assist module fails (production 2001~2006), it goes without any kind of warning, so dealers cannot help you out before it happens. Warning lights come on as you brake- a bit late don't ya think ? Residual braking power is laughable. Instead of stopping behind a van, you're in it.
I resent this talk about riding style; there's no discussion : it's the brake system that's faulty. Since you live in France, imagine a failure on Alpine roads. BMW ('unstoppable') has belatedly recognized the power assisted brake system is not fail safe, and have withdrawn it from production. I consider myself lucky without major damage, where a personal friend of mine (R1150R) needed back surgery, and others have had broken ribs (Dutch forum member).
In short, my '05 bike was new, properly maintained, the brakes went, I could afford it, and changed bikes.