Sorry, the NHTSA has not posted this TSB document yet.
You can still get the detailed info from Toyota for this TSB. Call your local Toyota dealer's service department & ask for a copy of TSB# T-TT-0375-15.
TT: FOR CUSTOMER CONCERNS OF NO OR POOR OUTGOING SOUND FROM THE BLUETOOTH SYSTEMS THERE ARE DIAGNOSTICS IN THE REPAIR MANUAL WHICH CAN BE PERFORMED TO DIAGNOSE THE CONDITION.
