The 4WS Prelude uses a front steering rack with an additional output worm. The output worm is connected to the rear steering box by a central shaft.
When the steering wheel is turned, the rack and worm in the front steering housing move the rack in the required direction. The rack drives the front wheels and also rotates the output worm shaft. The central shaft rotates, imparting an angle of rotation s to the rear crankcase, due to which the running rod moves. This rod is connected to the rear tie rods that turn the rear wheels.
In the rear crankcase, the input shaft drives the planetary pinion on a fixed internal gear. When turning the planetary mechanism, its vertical movement "absorbed" slider and guide, and only lateral, or transverse, movement is transmitted to the running rod.
The action of the planetary gear moves the drive shaft all the way to one side, then pulls it back, and then moves it all the way to the opposite side.
Up to approximately 127 degrees of steering, the rear wheels turn in the same direction as the front wheels, i.e. all left or all right. As the steering angle increases, the rear wheels return to the center, and then turn in the direction opposite to the direction of rotation of the front wheels. Thus, increased maneuverability is achieved, both when driving at high speed (rebuilding from one row to another and other turns at a small angle), and with low speed, but a large angle of rotation (e.g. car parking).