Welcome to the forum my brakes sound just like yours. Head unit just use your phone maps will be better anyway. Issues i have had in 7 years battery and alternator.
When mine went it just packed in , no lights on car except led rears. None on front no dash lights, no power steering 1am in the morning.
No warning whatsoever a bloody knight mare to fit. Small nut down the right hand side with a stupid bracket.
When heat shields go, best thing is a large washer with a small hole. Failing that a large washer with a small hole, new hole near the old and a
small self tapping screw.