I am uncertain whether it is same, however I have had a similar situation, although with a different model, namely an S212. The experience caused significant distress for almost one year. An attempt was made to use electrical tape on the pins responsible for securing the rear seat back, however this method proved to be ineffective. Various foam materials were tested on the load floor, storage tray, and removable side panels. Additionally, an examination was conducted on the baggage hooks. Upon discovering the location of the cable for the tailgate actuator under the cover, I proceeded to secure it with cable ties and provide additional support using foam material. This action led me to believe that I had successfully resolved the issue. The aforementioned statement does not align with the intended context. Subsequently, it was observed that there is an absence of any audible noise emanating from the rear compartment while individuals are there. In my particular situation, it was determined that the issue stemmed from one of the fixings/hooks on the rear bench, namely on one side. The seat base of my vehicle is equipped with a metal bar or wire that securely attaches to a hook located on the rear floor. One side of the object exhibited insufficient attachment, resulting in a noticeable shaking or vibration. The evidence of metal hook wear resulting from rattling was seen. By including a layer of thin rubber, the noise was successfully eliminated.