Active and passive safety. Unique combination provides consummate occupant protection
The high safety standard typical of the S-Class is further improved by a unique combination of new camera and radar-based driver assistance
systems. Innovations such as Speed Limit Assist, ATTENTION ASSIST drowsiness detection and Adaptive Highbeam Assist or the PRE-SAFE® Brakes take occupant protection on board the S 63 AMG and S 65 AMG to a wholly new level.
A combination of ultra-modern assistance and protection systems turns the AMG S-Class into an "intelligent" partner that can see, feel, respond reflexively and act independently in relation to a perceived danger and so prevent accidents or mitigate their effects. For the first time cameras are also used that are able to look well ahead, monitor the car's surroundings and interpret typical critical situations. One example is the Adaptive Highbeam Assist (standard for S 65 AMG). This system recognises oncoming vehicles or vehicles ahead with their lights on, and then controls the headlamps to ensure the best possible beam range without dazzling other road users. As a new feature, Night View Assist Plus with infrared camera (optional) is now equipped with a special pedestrian detection function: as soon as the system detects pedestrians on the road ahead, they are highlighted on the display to make them more readily noticeable.

Lane Keeping Assist is another system that "looks ahead" for even safer driving.

The camera on the inside of the windscreen is able to recognise clear lane markings by evaluating the contrasting images of the road surface and the markings. If the vehicle leaves its lane unintentionally, the driver is prompted by short vibrations of the steering wheel to correct the situation. Unlike conventional systems of this kind, the Mercedes system is able to evaluate the driver's activities as well, and can reliably ascertain whether the car is leaving its lane intentionally or not. There is therefore no warning if, for instance, the driver accelerates before overtaking or joining a motorway, brakes heavily or enters a bend.
The images supplied by the windscreen camera are also used by the new Speed Limit Assist, which recognises speed limit signs in passing and shows the relevant speed limit in the central display (standard for S 65 AMG).
Drowsiness detection on the basis of more than 70 parameters
Thanks to an innovative technology the S-Class has a very sensitive antenna for the attention level of its driver, and can warn him in time when he becomes drowsy. The ATTENTION ASSIST drowsiness detection system continuously monitors more than 70 different parameters. Once the evaluation electronics recognise the steering behaviour pattern that typically indicates the onset of drowsiness on the basis of information from the highly sensitive steering angle sensor, a warning signal is sounded and "ATTENTION ASSIST. Break!" appears in the instrument cluster. ATTENTION ASSIST is fitted as standard."Electronic crumple zone" for maximum occupant protection Mercedes-Benz has also improved the long and medium-range radar used by the optional Brake Assist PLUS (BAS PLUS) and DISTRONIC PLUS proximity control. Mercedes-Benz also offers another radar-based system for the S-Class in the form of PRE-SAFE® Brakes. If the driver is distracted and fails to recognise the immediate danger of a rear-end collision, or the warning signals of an assistance system, this system can intervene and brake the vehicle independently. The S-Class makes use of the latest development stage of this safety system: if the driver fails to react even after automatic partial braking action, the PRE-SAFE® Brakes activate the maximum braking pressure around 0.6 seconds before what is now recognised as an unavoidable accident – an emergency braking action that can significantly mitigate the severity of the impact. The PRE-SAFE® Brakes therefore act as something like an "electronic crumple zone".