puzzled

Just received a new 13 sedan with tech and premium : 1: audio stopped working . No volume. Car had to be restarted and system worked ? is there a TSB and software update ? 2: Drivers door lock inoperable . Fob or door handle button not working . Other doors are fine . only way to lock is with...

Cleaned out trunk (again) today, and looked under the false floor to where the Spare Tire and Battery are located. Something puzzles me. The PLUS (+) side of the battery has two cables going to it. The smaller of the two is connected directly to the positive post, but the larger of the two is...