2011 Mercedes S-Class Owner's Manual - Page 73

Driving safety systems G Warning Adaptive Brake ADAPTIVE BRAKE enhances braking safety and offers increased braking comfort. In addition to the braking function, ADAPTIVE BRAKE also has the HOLD function (Y page 335) and hill start assist (Y page 302). For further information, see Driving tips (Y page 320). 71 When the å ESP® OFF warning lamp is lit, ESP® is deactivated. If the ÷ ESP® warning lamp and the å ESP® OFF warning lamp remain lit, ESP® is not available due to a malfunction. When ESP® is deactivated or not operational, vehicle stability in standard driving maneuvers is reduced. Adapt your speed and driving to the prevailing road conditions and to the non-operating status of the ESP®. PRE-SAFE® Brake (vehicles with DISTRONIC PLUS) PRE-SAFE® Brake can help you to minimize the risk of a frontal collision with a vehicle ahead or reduce the effects of such a collision. At speeds above approximately 20 mph (30 km/h), this function warns you when you are rapidly approaching the vehicle in front. An intermittent warning tone sounds and the · distance warning lamp lights up in the instrument cluster. Due to the nature of the system, particularly complicated driving conditions may cause the system to display an unnecessary warning. If the driver and front-passenger have fastened their seat belts, PRE-SAFE® Brake can also can also perform the following at speeds of above approximately 20 mph (30 km/h): Rbrake ! Avoid spinning a drive wheel for an extended period with ESP® switched off. This could cause serious damage to the drive train. X To activate:(Y page 375). The å warning lamp in the instrument cluster goes out. EBD (Electronic Brake-force Distribution) G Warning Observe "Important safety notes" (Y page 66). EBD monitors and controls the brake pressure on the rear wheels to improve driving stability while braking. G Warning If the EBD malfunctions, the brake system will still function with full brake boost. However, the rear wheels could lock up during emergency braking situations, for example. You could lose control of the vehicle and cause an accident. Adapt your driving style to the changed driving characteristics. the vehicle automatically at speeds up to approximately 124 mph (200 km/h) Rtrigger preventative passenger protection measures (PRE-SAFE®) (Y page 53) G Warning! An intermittent warning sounds and the distance warning lamp · in the instrument cluster is illuminated if the PRE-SAFE® Brake calculates that the distance to the vehicle ahead and your vehicle's current speed indicate that the PRE-SAFE® Brake will not be capable of slowing the vehicle sufficiently to maintain the preset following distance, which creates a danger of a collision. Z Safety