Mine has had the "3 Amigos" since December. Switching the ignition off and back on usually clears it, but on a couple of occasions they stayed on.
A friend plugged it into the diagnostic machine where he works expecting it to show a fault with one wheel sensor, but it was showing so many fault codes on the ABS system that he said all he could do was clear them all and try again when the lights come back on.
I know the previous owner had a rear suspension height sensor fitted last year and that was on of the codes showing, so it's probably never had any faults cleared ever.
The lights haven't come back on. Yet......