Hello everyone, and thanks in advance for helping me. As you can see from the video, every time I turn the steering to the left or right, when it hits the end it makes a noise which is different from that famous whining noise that PS pump makes. I tried to duplicate the noise by turning the wheel by hand. No noise. So I think its the pump. Already checked the fluid, all good, the suspension links struts, springs all seem OK. The noise happened very suddenly, I haven't replaced any parts previous to the noise. The noise is less noticeable when driving. Also steering wheel has vibration when turning. Hope the vedio gives more details to the problem. Now I showed the car to 2 independent mechanics, first said change the pump, second was pretty sure it's the steering rack. I'm confused, and don't wanna spend hundreds of euros when not sure where the problem lies. Any help / suggestions welcomed. It's an E class S211 Estate from 2007.