Transition of the Head Up display from the previous entirely touchscreen interface to a model with a knob and buttons.

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Greetings, I have replaced the updated 5-button interface, volume knob, and facelift display in my 2018 Civic. Transitioning from the pre-facelift to the facelift screen. All functions operate well, save for the screen's dimmer feature when the headlights are on. Has anybody else modified the updated display on the head unit and had issues? Perhaps someone will identify the little issue with the display fading. I seek assistance. I observed that pressing the brightness, phone, and volume keys simultaneously does not provide access to the diagnostic menu. Is anybody aware of the issue? Is the reason related to the replacement of the display? I really appreciate it.

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However, there is an additional anomaly... after replacing the screen, I am unable to access the diagnostic menu (by using the three-button combo). Does anybody else have this issue? I want further information on this matter. It would be intriguing to ascertain the method by which the screen is allocated to the new screen pin; a circuit diagram would be beneficial. There may be other individuals present who want a resolution. Salutations to everybody.

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Unable to assist I regret to inform you, my friend, because I own an outdated model.