noise. Or at higher mph, it was not heard. Bottom guide pin was very stiff. The interior brakes were down to 3mm thickness on both sides. Did not retract like it should. Also the problem was intermittent, meaning it would not happen all the time. So what i did was replace the brake pads, greased the hardware that the brake pads sit. AND PS: I couldn't find any literature or forum info that stated that these rubber rings on the tip of the lower guide pins were absolutely necessary. I removed this rubber ring and the guide pin worked flawlessly. The noise was a pain in the ass to listen.
Brake Noise Scion TC 2014 Automatic Transmission Tokyo Shabu Shabu Pasadena - Home - Pasadena, California
I also cleaned and re-greased the guide pins. Such a new car, I doubted the brakes pads needed replacing and doubted the caliper was a problem. The bottom one however, continued to be stuck. It was a middle to low frequency noise that sounded roarry and grindy, (or maybe even like a low whale noise) coming from the front wheels area. I believe this rubber ring is the culprit for the seizing lower guide pins. Anyways as the years went by, I pulled off the tires today because I could hear my front brakes were about due for changing finally, and here are my findings.
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Last edited by Joshua Recinos; at 09:02. I had a hunch that it may have something to do with stiff/seized guide pins. I have a Scion TC 2014 Automatic that started making braking noise 2 years after purchase. The exterior brake pads were still at about 9mm thickness on both sides. It got worse as another year went. It only occurred when I was driving around 20-30mph and braking to a complete stop. If I braked hard, it would not be present.