2016 touring civic has this known problem of popping loud audio on some models.
I was thrown like soccer ball for 6 services and no fix\
then i called Honda customer service
I gave my Safety issue on kids ears. my safety issue that i may crash due to noise. Took video evidences. that noise is more than jet air plane. I said government should recall this cars. I get hold of my dealer and told to keep car till they fix it. miracle. within day got fixed. They changed parts to new. Yeah ask service report every time then u know what they are doing actually.