yes, it has been answered before but it's ok, i know how frustrating it can be when u'r having problems.
you need to switch the cockpit view to 2d atleast once and that frees up most of the knobs and then the autobrakes should work and also frees up other switches.
however i'v never had problem with the wiper blades not working but maybe switching the view will work for that too, you may want to try that.
hope that helps