Not sure on retrofit, mine came with ACC and MFSW, it was a courtesy van at the dealers. I didn't like the ACC or get the feeling of it last few weeks but in a decent motorway run it came into its own, just need to learn to trust it and not hover my foot over the brakeI think yours is a Trendline like mine. Can ACC be retrofitted if you have the radar sensor? (and a MFSW with the button)