I have a 2016 Accord touring with two displays and navigation. I searched how to enter the self diagnostic on Google. I have the radio on, pressing and holding the NAV, Menu and Back button for 3 seconds but have not been able to make it work. My passenger side mirror needs to be replaced and in order to get the camera operation, it is my understanding that the self diagnostic program menu needs to be accessed. I have not been able to get it to work. Not sure if these are the correct touch screen button to push.
Thanks.
Gary

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