Usually I just leave the speed limit warning alone as it’s a reasonably gentle reminder if I wander over the current speed limit. On a recent motorway trip I switched it off in order to have the flexibility to accelerate in to a space when overtaking with lots of traffic in the offside lane. After stopping and restarting the speed limit warning re-set itself, but then sounded a warning every time the speed limit changed!! Never did that before. Over the course of the weekend switched the system off again then when it reset it no longer sounded a warning when the speed limits changed. Did change the digital dash configuration too, but would this have any effect?