I just bought a used 2016 GTI and I’m able to adjust the sound settings like bass, treble, etc. on the stock stereo system, but when I turn the car off and on again, the stereo settings reset to the way it was when I bought it. I tried to reset it to factory settings but it just keeps going back to a custom setting that the previous owner probably set it to. This also happens with the Bluetooth settings, I deleted the previous persons device and added mine, but the next time I turned the car on, their device popped up again and mine wasn’t there. I tried playing around with the settings to see if there was a save option but I didn’t see one. Any ideas?