It may be that HD radio is fading out. I had a car radio in the 80s or 90s that had AM stereo. I think that is dead now.
OR
It could be in the settings. I know my 2017 has a setting for HD radio yes or no. It was set to yes and I've kept it that way since I got it so I don't know if I set it to NO, the HD radio it would go away on the radio screen but it's worth a check.
OR
It could be in the settings. I know my 2017 has a setting for HD radio yes or no. It was set to yes and I've kept it that way since I got it so I don't know if I set it to NO, the HD radio it would go away on the radio screen but it's worth a check.