© 2013 Mercedes-Benz USA , LLC * Excludes all options , taxes , title , registration , transportation charge and dealer prep fee .
1 No system , regardless of how advanced , can overcome the laws of physics or correct careless driving . Please always wear your seat belt . Performance is limited by available traction , which snow , ice and other conditions can affect . Always drive carefully , consistent with conditions . Best performance in snow is obtained with winter tires . 2 Lane Keeping Assist may be insufficient to alert a fatigued or distracted driver of lane drift and cannot be relied on to avoid an accident or serious injury . 3 Blind Spot Assist may not be sufficient to avoid all accidents involving vehicles in your blind spot and does not estimate the speed of approaching vehicles . It should not be used as a sole substitute for driver awareness and checking of surrounding traffic conditions . 4 COLLISION PREVENTION ASSIST may not be sufficient to avoid an accident . It does not react to certain stationary objects , nor recognize or predict the curvature and / or lane layout of the road or every movement of vehicles ahead . It is the driver ’ s responsibility at all times to be attentive to traffic and road conditions , and to provide the steering , braking and other driving inputs necessary to retain control of the vehicle . Drivers are cautioned not to wait for the system ’ s alerts before braking , as that may not afford sufficient time and distance to brake safely . Options shown . Not all options are available in the U . S .