In fact disconnecting the battery does NOT alter your pre-set radio stations. There may be a way to go back to factory default but I haven't seen how to do that either for just the audio.Haven't been able to figure out how to do it through the infotainment system either. I'm sure disconnecting the battery would work, but that's not much of a solution.
I wouldn't think it would matter if the car was running or not, but you can try it w/car running. Do you have any XM channels preset... did you loose those? What about other items... did you have to repair your phone, reenter any saved locations?I did that reset twice, and the presets are still there. DO I need to leave the motor running the whole time the system is rebooting? What else can I try?
Sounds like for some reason it didn't reset... the point in doing the factory reset is to remove all your personal stuff, phone, home location (if you have set that in the nav system), save locations, XM channels, and other settings an owner may enter. I have done the factory reset before due to a navigation issue and had to re-enter the specific info described.The phone is still connected. I don't think anything happened at all from that reset. The car is parked at the airport for the next 2 weeks so I won't think about for a while.
I really hate new cars with these stupid infotainment systems. Who thought it was a good idea to put a laptop in the dashboard?