2010 Mercedes E-Class Owner's Manual - Page 67

Driving safety systems your current speed is so close that the PRESAFE® Brake will not be capable of slowing the vehicle sufficiently. When the danger of a collision still persists and you do not brake or accelerate significantly, the PRE-SAFE® Brake may initiate full application of the brakes automatically. To maintain the proper distance to the vehicle in front of you and thus prevent a rear-end collision, you must apply the brakes yourself. X 65 G Warning! The PRE-SAFE® Brake will only respond with brake assistance if it has clearly detected an object. Detection can be impeded by Rdirty or covered sensors or heavy rain from other radar sources Rsnowfall Rdisturbance Rstrong radar reflection such as in parking garages PRE-SAFE® Brake the vehicle immediately to avoid a collision. Under no circumstances should the driver await the intermittent warning sound before braking. Observe the following warning note. The intermittent warning sound ceases and the distance warning lamp · goes out when the necessary distance to the vehicle ahead is again established. The PRE-SAFE® Brake can react to stationary obstacles such as standing or parked vehicles at road speeds of up to approximately 40 mph (70 km/h). G Warning! Brake uses radar signals that The are not reflected well by narrow objects and absorptive materials. For this reason the PRESAFE® Brake will not react to persons, animals, and approaching traffic or crosstraffic. The PRE-SAFE® Brake may not detect narrow vehicles driving in front of you, such as motorcycles and vehicles driving offset from your vehicle center. If you do not receive visual or acoustic warning signals, the PRE-SAFE® Brake may Rnot have recognized the collision risk been deactivated Rhave Rbe malfunctioning Apply the brakes yourself to avoid a collision. G Warning! Depending on the vehicle speed, the PRE-SAFE® Brake brakes your vehicle with a maximum of 13 ft/s2 (4 m/s2) before a possible hard stop. This corresponds to about 40% of the maximum deceleration ability of your vehicle. The driver must apply the brakes additionally in order to prevent a collision. The self-acting hard stop will be initiated when the imminent danger of a collision exists, e.g. when an evasive driving maneuver cannot avoid an accident. The PRE-SAFE® Brake does not always clearly interpret complex traffic situations. If a visual and/or acoustic warning is issued in an uncritical driving situation, or if the vehicle brakes lightly, you can interrupt the PRESAFE® Brake maneuver by pressing down all the way on the accelerator pedal, using kickdown, or releasing the brake pedal. The PRE-SAFE® Brake maneuver is terminated immediately when Ryou Ryou Ran avoid the obstacle by evasive steering drive less than 9 mph (15 km/h) obstacle can no longer be identified ahead of you system no longer senses the risk of a collision Rthe Z Safety and security