The Cross Traffic Alert system assists the driver when maneuvering out of a parking space and in daily situations when it is difficult to see crossing traffic, such as blind entrances or exits. The vehicle detects objects approaching the vehicle and will warn the driver with visual and acoustic signals. Looking for a quick answer? Check out our FAQ page : faq.bmwusa.com Need further help? Contact us here: bmwusa.com/contact-us.html You can also refer to your owner's manual or visit: bmwusa.com/owners-manuals.html Connect with BMW USA: Website: bmwusa.com Facebook: facebook.com/BMWUSA Twitter: twitter.com/BMWUSA Instagram: instagram.com/BMWUSA Tumblr: BMWUSA.tumblr.com