iPhone 5 bluetooth connection to car stereo

Just upgraded from iPhone 4 to iPhone 5. My phone connects with Bluetooth fine with my Pioneer stereo in my car, but the song names and artists don't display on my car stereo and the remote for my car stereo now won't advance songs. Volume and source work fine on the remote. All this worked with my iPhone 4. Is there some sort of a bluetooth accessiblity issue that I can fix on my phone?