My 4500 mile 2013 Sonata just developed a problem with the radio controls on the steering wheel. The volume + gives me volume down, and volume - activates the voice control. The voice control is unaffected. It only does it in the evenings on my drive home. And then not always. Unaffected by thumping on the wheel or wheel position. The radio **** works fine. I'll take it in when it gets worse. I hate taking cars to the dealer and having them not fail for the service tech.

Anyone heard of Sonata having this problem?

My first Hyundai. Great car for the money... as long as it holds up.