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-SB-0047-16.
TSB: THE BREATHER PLUG SHOULD BE REPLACED DURING ANY DIFFERENTIAL/TRANSFER CASE REPAIRS TO PREVENT POSSIBLE REPEAT FAILURES. THE SUBSEQUENT USE OF THE ORIGINAL BREATHER PLUG AFTER A REPAIR HAS BEEN FOUND TO CONTRIBUTE TO THE FAILURE OF THE DIFFERENTIAL/TRANSFER CASE COMPONENTS. REPLACE THE BREATHER PLUG WHEN REPLACING DIFFERENTIAL/TRANSFER CASE COMPONENTS.
