I had an issue with 2016 my Astra J CD400 and stearing wheel controlls being unresponsive but still the radio was playing sound and even accepting a cd and then playing but all other button were unresponsive and I couldn't even turn the radio off.
After checking on line I found out that it could be a securty comunication glitch, and it recommended disconnecting the battery. As I didn't have the right tools available at that time, I tried removing the infotainment fuse No 5 in the glove compartment fuse box. I left it over night and then refitted the next morning. T
Thankfully this seems to have done the trick.
