where can i find rotary sensor for the dsc ? on 2001 BMW 330Ci

When i drive after a while the car seems to brake itself
the traction operates and both the lights of the traction and the handbrake stay on(both yellow)
I checked it and they told me is the rotary sensor.
we cannot find in Cyprus

Asked by for the 2001 BMW 330Ci
have a brk insp done and if it needs brakes repl sensors at that time
My wife is having th same issue--what was or is the fix? we changed the speed sensors and brake sensors and still the issue happens. We had a short in her brake lights assembly and we replaced it and issue stopped for a while but now its is back. any ideas or what was the final out come?
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