Im new here, from the UK. Recently purchased a DS 2016. I have booked the car in for a free health check at LR in north west London on Friday and I have been told by them that they will also change the power steering bolts as there is a recall on it due to them corroding! Seems like the UK have finally given in to this and are recalling it.. its not on the land rover recall checker or the gov website as a recall.
So if your from the UK, I would advise getting it booked in even if you haven't got a problem now.