ABC system also allows self-levelling suspension, which raises or lowers the vehicle in response to changing load (i.e. the loading or unloading of passengers or cargo). Each vehicle equipped with ABC has an “ABC Sport” button that allows the driver to adjust the suspension range for different driving style preferences. This feature allows the driver to adjust the suspension to maintain a more level ride in more demanding driving conditions. The reliable function of the ABC system requires a regular hydraulic oil change and filter replacement. The Mercedes-Benz C112 of 1991, Mercedes-Benz Vario Research Car of 1995 and the Mercedes-Benz F200 of 1996 already featured prototype versions of ABC. The first complete and ready-for-production version of ABC was introduced in 1999 on the top-of-the-line Mercedes-Benz CL-Class (C215). In 2006, the Mercedes-Benz CL-Class (C216) introduced the second generation Active Body Control suspension, referred to as ABC Plus or ABC II in technical documentation. This updated suspension reduced body roll by 45% compared to the first generation ABC suspension. ABC Plus had an updated hydraulic system design, with shorter hydraulic lines, and the pulsation damper was relocated to be mounted directly on the tandem pump. In 2010 a crosswind stabilization function was introduced. In strong gusts of crosswind, and depending on the direction and intensity of the wind having an effect on the vehicle, this system varies the wheel load distribution in such a way that the effects of winds are largely compensated or reduced to a minimum. For this purpose the ABC control unit uses the yaw rate, lateral acceleration, steering angle and road speed sensors of the Electronic Stability Program ESP®. Magic Body Control In 2007, the Mercedes-Benz F700 concept introduced the PRE-SCAN suspension, an early prototype road scanning suspension, using lidar sensors, based on Active Body Control. In 2013 the Mercedes-Benz S-Class (W222) introduced the series production version of PRE-SCAN, but with a stereo camera instead of laser projectors. The system dubbed Magic Body Control is fitted with a road-sensing system (Road Surface Scan) that pre-loads the shocks for the road surface detected. Using a stereo camera, the system scans the road surface up to 15 meters ahead of the vehicle at speeds up to , and it adjusts the shock damping at each wheel to account for imperfections in the road. Initially only available on 8-cylinder models and above, Magic Ride Control attempts to isolate the car's body