2011 Mercedes E-Class Owner's Manual - Page 72

70 Anti-theft systems G Warning PRE-SAFE® Brake does not always detect complex traffic situations properly. You can terminate the braking action of PRE-SAFE® Brake in a non-critical driving situation at any time if: Ran Depending on the vehicle speed, 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 maneuver cannot avoid an accident. PRE-SAFE® Safety In order to maintain the appropriate distance to the vehicle in front and thus prevent a collision, you must apply the brakes yourself. At speeds up to approximately 40 mph (70 km/h), PRE-SAFE® Brake can also detect stationary obstacles, for example stopped or parked vehicles. acoustic and visual warning occurs vehicle brakes To end this, you can either depress the accelerator pedal further, activate kickdown or release the brake pedal. The braking action of PRE-SAFE® Brake is ended automatically if: Rthe Ryou Ryou G Warning! If you do not receive visual or acoustic warning signals, the PRE-SAFE® Brake may Rnot have recognized the collision risk been deactivated Rbe malfunctioning Apply the brakes yourself to avoid a collision. Rhave X To activate: activate PRE-SAFE® Brake in the on-board computer (Y page 207). The Ä symbol appears in the lower multifunction display, as long as the HOLD function is not activated (Y page 184). On vehicles with parking guidance, the P gear must be engaged for the icon to be displayed. maneuver to avoid the obstacle drive slower than approximately 9 mph (15 km/h) Rthere is no longer an obstacle detected in front of your vehicle Rthere is no longer any danger of a collision Following a collision or accident-related damage to the front end of the vehicle, have the configuration and operation of the radar sensors checked. Choose a qualified specialist workshop for this which has the necessary specialist knowledge and tools for the work required. Mercedes-Benz recommends that you use an authorized Mercedes-Benz Center for this purpose. Anti-theft systems Immobilizer The immobilizer prevents your vehicle from being started without the correct key. When leaving the vehicle, always take the SmartKey with you and lock the vehicle. The engine can be started by anyone with a valid key that is left inside the vehicle. X To activate with the SmartKey: remove the SmartKey from the ignition lock. X To activate with KEYLESS-GO: switch the ignition off and open the driver's door. X To deactivate: switch on the ignition. For PRE-SAFE® Brake to assist you when driving, the radar sensor system must be switched on and operational.