I recently encountered this situation. I always had some sort of music on and didn't notice anything but my 2016 (newer body) started making grinding / squeaky noise every time I brake in low speed (less than 15mph) So I printed the TSB and went to my local Toyota dealer (Hollywood Toyota in Los Angeles) and the service advisor said we had to re-create the noise in order for them to honor the TSB, which they were able to. Also like the TSB states, the mileage needs to be less than 36K, and I drive alot because I use this car to go roadtrip and I was at 32K and they were able to fix the problem. Another nice thing about them was that they re-surfaced the rotor like it said on the TSB, and they put this fitting kit on the brake pad, and they were also nice enough to replace the front brake pads to a new one at no charge, since the service advisor told me that they want to make everything right so I don't have any other problem later on. So I think if anyone's front brakes are making weird noise, you should get them checked and fixed at the dealer!!!