At the same time, the sunroof is automatically closed to prevent the occupants from being ejected in the event of a rollover.
In the Pre-safe concept, Schoneburg says, there are new interior safety systems that "ensure that the occupants are placed in the most protected position possible, even before the impact."
- An automatic seat adjustment lowers the seat cushion to the rear if required and adjusts the back of the seat to the "best possible position so that the airbag and seatbelt can function with optimum effect."
- The belt tensioners are already activated before the impact, and that prevents the occupants from moving too far forward during emergency braking or preventing excessive lateral movements of the torso if the car begins to skid.
- Schoneburg says that tests carried out by Mercedes show that the Pre-Safe belt tensioner is able to reduce forward body movement by up to 150mm and lateral movement by up to 300 mm, which means the occupants are "in the best possible seating position when the impact occurs, enabling the airbags to carry out their protective function to the fullest."
- A knee protector extends from the instrument panel to reduce the forces acting on the legs during a frontal impact.
Schoneburg says it would also be conceivable to install interior door panels that move towards the occupants before the crash and keep them away from any body components that might penetrate into the interior during the accident.