2011 Mercedes S-Class Owner's Manual - Page 357

Driving systems The system may be impaired or may not function if: Rthere 355 The warning vibration occurs earlier if: Ryou is poor visibility, e.g. due to insufficient illumination of the road, or due to snow, rain, fog or spray. Rthere is glare, e.g. from oncoming traffic, the sun, or reflection from other vehicles. Rthe windshield is dirty, fogged up or covered, for instance by a sticker, in the vicinity of the camera. Rseveral or no lane markings for a single lane are present. Rthe lane markings are worn away, dark or covered up, e.g. by dirt or snow. Rthe distance to the vehicle in front is too small and the lane markings thus cannot be detected. Rthe lane markings on the road are unclear, e.g. near roadworks. Rthe lane markings change quickly, e.g. lanes branch off, cross one another or merge. Rthe road is narrow and winding. Lane Keeping Assist cannot detect road and traffic conditions. It is not a substitute for attentive driving. You are responsible for the vehicle's speed, braking in good time, and steering correctly. Always adapt your driving style to suit the prevailing road and weather conditions. Always pay attention to traffic conditions and your surroundings. Otherwise, you may fail to recognize dangers in time, cause an accident and injure yourself and others. Rthe road has narrow lanes. cut the corner on a bend. No warning vibration occurs if: Ryou Ryou clearly and actively steer, brake, or accelerate. Ryou cut the corner on a sharp bend. Ra driving safety system intervenes, such as ABS, BAS or ESP®. Ryou switch on the turn signals. In this event, the warnings are suppressed for a certain period of time. Activating Lane Keeping Assist X A warning can be given when a front wheel passes over a lane marking. It will warn you by means of intermittent vibration in the steering wheel for up to 1.5 seconds. In order that you are warned only when necessary and in good time if you cross the lane marking, the system recognizes certain conditions and warns you accordingly. Activate Lane Keeping Assist using the onboard computer (Y page 376). Symbol : appears in the multifunction display. If you drive at speeds above 40 mph (60 km/h) and lane markings are detected, symbol : is displayed in green. Lane Keeping Assist is ready for use. Active Driving Assistance package General information i The Active Driving Assistance package is only available on vehicles without HYBRID. The Active Driving Assistance package consists of DISTRONIC PLUS (Y page 325), Z Driving and parking approach the outer lane marking on a bend. Rthe road has very wide lanes, e.g. a freeway. Rthe system recognizes solid lane markings. The warning vibration occurs later if: