2011 Mercedes CL-Class Owner's Manual - Page 304

302 Driving systems Vehicles traveling on a different line because of its narrow width. The distance to the vehicle in front will be too short. Obstructions and stationary vehicles Driving and parking DISTRONIC PLUS may not detect vehicles traveling on a different line. The distance to the vehicle in front will be too short. Other vehicles changing lanes DISTRONIC PLUS does not brake for obstacles or stationary vehicles. If, for example, the detected vehicle turns a corner and reveals an obstacle or stationary vehicle, DISTRONIC PLUS will not brake for these. Crossing vehicles DISTRONIC PLUS has not detected the vehicle cutting in yet. The distance to this vehicle will be too short. Narrow vehicles DISTRONIC PLUS may detect vehicles that are crossing your lane by mistake. Activating DISTRONIC PLUS at traffic lights with crossing traffic, for example, could cause your vehicle to pull away unintentionally. DISTRONIC PLUS has not yet detected the vehicle in front on the edge of the road,