sounds likely. I dont know why your e-brake would come on, although that may be related to the other two in e39's.
Remember, if ABS faults, DSC will automatically fault, so its probably just one of the two (more likely to be abs)./
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Hot: 2001 Estoril M RoadsterZCP 19's michelin supersports, ZHP knob, JL 8W3
Cold: 2002 TiAg M3 6mt
deoranged, dechromed, led tails, ZHP knob, UUC SS v3, GROM, OEM 18's w310's,
Fun: 2006 YZF-R6, black, ohlins, pazzo, cat delete, vance hines csone, YEC racing tune