Hi Al,
Thanks for the speedy reply and help. I followed your recommendation and removed all my saved flights including my default MooneyAcclaim, ie LM's by Lionheart Creation, senario. P3D then loaded the their default F22 Raptor as the default and that fixed the problem. Both the steering lock button on the pedistal and the white button on the yoke now work. It appears the problem was the MooneyAcclaim as my default plane. I've been using it for my default for years without a problem. I did do an update P3D ver 4.5 HF3 Content along with the Client component last month, so maybe that what cause the problem.
Regarding 'Falcon64', its from my last name, Faulconer, which are people that raise falcons for hunting for the royals in old times, 64 was my age when I retired and started flight simming.
Thanks again for help.
Best regards, Falcon64.