My wife's 2015 SV's steering wheel controls on LEFT side are not lit (only) right...is this normal? If not, is it just a simple fuse change? If so, which one please? Well, just called her (on Bluetooth)...now she's saying they're lit, but not as much as right side?? Is there a brightness control, or can I be dealing with faulty wiring here? Anybody run into this before? Thank you.