I'm having the same issue but even when not connected to Android Auto! Every time lately when I start my Samsung Galaxy A51, Pandora launches in my Notifications window and begins playing. I've removed Notification privileges for Pandora in my phone, Auto Launch is set to off in the Pandora app settings, I've deleted and reinstalled Pandora. Nothing helps. I don't want to delete Pandora permanently but unless I can find a fix I will have to. HELP!
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