I seem to recall 147dude complaining about the same issue when he bought his 147 too.
Read below an excerpt from his website;
Other problems that were there from the start include a very tricky one with the VDC kicking in too early, usually in fifth gear, especially at around 60-80 km/h, and more often in left turns than in right turns. In the end they found out it was the ABS unit that was faulty, and they either upgraded or replaced it. The dealer/importer tried to tell me some crap that this was due to the fact the car was lowered, but fortunately they had lowered it for me, so then I just said, 'alright if that's what you think, why don't you "unlower" it and test with the standard springs, because if that's it, you owe me some money for the lowering'. They never did that, but after testing and having the car in for a week(!) they finally found out it was the ABS unit.
Get a hold of him and discuss further if you need detailed info.