Has a Nardi Torino, which was on the car when I got it back in 2000. (as I stated in OP, nothing has changed recently) This will do it at speeds BELOW 80, often around 60. Worth considering. Maybe a pin has broken off. As I said in OP, I don't want to deactivate HICAS. That just masks the problem, it doesn't find the cause. Worth considering. P/S fluid appears to be ok, might now be a bit overfull after I added some fluid, but pretty sure it was actually ok to begin with, so not losing P/S fluid. As I said in OP, I don't want to deactivate HICAS. That just masks the problem, it doesn't find the cause.Thanks for your input.