Thanks again,
@SoCal Buzz ...I always appreciate your willingness to help. Yes, I too am on firmware version 40.4.2. I followed your instructions and switched the headlights from "Auto" to "On" and toggled off the "Auto High Beam." This does indeed allow me to manually turn on the high beams, but when I have the Headlight setting to "On," the car notifies me that the lights are on (and don't turn off when I exit). So that would mean that I have to change the setting from Auto to On each time I plan to manually keep the High Beams on.
So, it seems that I have to first make the change from "Auto" to "On" (I find Auto High Beams useful) and then follow your instructions to manually keep the High Beams on. Even if I choose to have the Headlights setting to "On" vs. "Auto," we still have the issue of the lights staying on upon exiting. If this is correct, while it's a useful workaround, it is cumbersome. Do I have this right?