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-0377-15.
TT: SOME CUSTOMERS MAY EXPERIENCE POOR OUTGOING BLUETOOTH SOUND QUALITY, THIS CAN OCCUR FOR VARIOUS REASONS. CURRENT MULTIMEDIA SYSTEMS ARE DESIGNED WITH THE ABILITY TO ADJUST BLUETOOTH SOUND QUALITY TO COMPENSATE FOR ECHO OR EXCESSIVE BACKGROUND NOISE.
