Why is my radio going from regular FM radio to CD player by itself?

Hello, a diagnostic tool could very likely see inputs triggered for body models like the audio unit. If the steering wheel or the audio unit itself has controls being triggered externally due to some kind of switch issue, you should be able to see it. Additional diagnostic testing could be performed by disconnecting the steering wheel switches, for example, to see if the problem continues. A sliding contact in the steering wheel that provides power to the switches -- for example -- could be influencing a problem. It just takes testing. There are no known concerns to share. www.repairpal.com/repair-shops