1. Raise the car.
2. If required, remove the bottom cover of the engine compartment.
3. While illuminating with a lamp, visually inspect the front and rear hinge discs for wear, damage and deformation.
4. Check for cracks in the transverse ribs in the area of the relief bushings (arrows).
5. If necessary, replace the hinge disc. If there is deformation, reduce the load on the cardan shaft, if the deformation remains, also replace the hinge disk.