2011 Mercedes S-Class Owner's Manual - Page 358

356 Driving systems Active Blind Spot Assist (Y page 356) and Active Lane Keeping Assist (Y page 359). Active Blind Spot Assist Important safety notes Active Blind Spot Assist uses a radar sensor system to monitor the side areas of your vehicle. In addition, it uses the radar sensor system to monitor the front area as well. Active Blind Spot Assist is active at speeds above approximately 20 mph (30 km/h). A warning lamp in the exterior mirrors calls your attention to a vehicle or certain obstacles in the area monitored. If you switch on the corresponding turn signal before changing lane, you will also receive visual and audible collision warnings. If a risk of lateral collision is detected, corrective braking may help you avoid a collision. Driving and parking i USA only: This device has been approved by the FCC as a "Vehicular Radar System". The radar sensor is intended for use in an automotive radar system only. Removal, tampering, or altering of the device will void any warranties, and is not permitted by the FCC. Do not tamper with, alter, or use in any non-approved way. Any unauthorized modification to this device could void the user's authority to operate the equipment. For Active Blind Spot Assist to assist you when driving, the radar sensor system must be activated (Y page 378) and operational. Monitoring range Active Blind Spot Assist monitors the area up to 10 ft (3 m) behind your vehicle and directly next to your vehicle as shown in the diagram. For this purpose, Active Blind Spot Assist uses sensors in the rear bumper. G Warning Active Blind Spot Assist is only an aid, and may detect vehicles/obstacles incorrectly or not at all. The system may be impaired or may not function if: Rthere is poor visibility, e.g. due to snow, rain, fog or spray. Rthe rear and/or front sensors are dirty. Active Blind Spot Assist may not detect narrow vehicles, such as motorcycles or bicycles, or only detect them too late. It cannot detect vehicles that are overtaken at a small distance and then enter the blind spot area. Active Blind Spot 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. G Warning Active Blind Spot Assist monitors certain areas in the immediate vicinity of your vehicle. Vehicles that approach and drive past at high speeds are not detected. No visual nor audible warnings are emitted and the system does not brake the vehicle to correct your course.