i've been getting intermittent ABS / VDC alarms for the last couple of years (braking, accelerating, anytime). ASR is always disabled until next restart but i don't think it's ever affected the cruise control. a new battery did stop the alarms for a short while, as did a replacement brake light switch - i think it's generally regarded that you can fit these yourself, i did, but it was a lot easier to take the old one out (and in) than it was to put the new one in, in my case. i've also had the ABS unit, as well as all the wiring, examined (under warranty) but they couldn't find anything wrong. i found that i can't completely tighten one of the battery terminals now so i think it might be that. but i'm just living with it for the time being. it's about once a week at the moment.