Having the same issue just purchased XF Diesel sport 2.2 and when I am stationary at lights or roundabout the car stalls, I cannot turn selector to park or drive or even stop start button fails to respond, very embarrassing. I get the impression that having filled up 2 times at Costco that this might be the cause of engine shock? Stalled 2 times in 2 weeks .This morning I have topped up at BP with ultimate fuel. Intend on adding redex diesel cleaner, can anyone advise if this is a good or bad thing to do….. I love my Jag but not when it ain’t running😔