Hi everyone! I wanted to post this since I couldnt find too much info about it online and it seems to be a common issue. My 2019 S550 was making a weird noise when turning at slow speeds. I read about switching the diff fluid out and using Royal Purple - that didnt do anything. SO I switched it back to the stock fluid type and added the Ford differential additive and that did the trick! So if you're reading about alternative methods to fixing this or looking into your steering or whatever -...

Weird vibration when turning at slow speeds