A320 family doesn't give a warning, it will however give a "Too low, gear" warning when you descend below 500ft without having dropped the gear. So maybe its the same in the 350.
Don't confuse Boeing with Airbus.
My 350 won't turn on the ground. Tiller turns and nose gear turns but aircraft ploughs on in s straight line. This has only happened since .02 update. Disappointning. Aircraft now unuseable after update.