Elantra GD (2013+) :: Radio Stays On When Ignition Is In The Off Position

I own a 2013 Elantra GT that my wife drives. We have had it since late September 2012, so it is about 20 months old now, with only 2250 miles. Yes, I know, it is not even broken in yet.

Anyway, yesterday when the wife returned from some shopping she told me that the radio in the car is still on after the engine was off, the ignition locked and the key in your hand.

I checked it out, and sure enough, the radio was still on. I restarted the car, and discovered the power button would not turn the radio off, the radio volume could not be changed, and the station could not be changed. Every control for the Audio system was inoperative, along with all the control buttons on the left side of the steering wheel.

Every thing else in the car appeared to work. When I shut the engine off, and removed the key, the radio still played on. I took the car over to the dealership first thing this morning; the service rep, the service manager and a service tech could not figure it out. I had to leave the car with them, so that one of their Electronic Certified Techs who comes in later could check it out.

They drove the car to a service bay, and disconnected the battery, so the radio would not run the battery down. When the tech came in, he reconnected the battery, and everything now works. They have no idea at all what happened.