buick 2012 regal

I have a 2012 Buick Regal 2.0 with the flex engine. I recently noticed the coolant air bleed hose is leaking, is this normal? I had to really search for this part for the Buick as there is little to no information on these cars. I asked the question what does the coolant air bleed hose do and...

I recently turned on my Buick Regal 2012 and the radio came on but showed only Buick symbol screen. I was not able to turn radio off, switch channels, adjust volume or anything. Has this ever happened to any other Buick owner and is it fixable?