2013 Tacoma drives fine when I let go of brake after cold start then it shifts to brake?

Find a quiet back road or parking lot, and accelerate to 10-15 mph and gently apply only the parking brake to stop. The results/performance of it should tell you a lot. If it barely does anything, it's an issue with the cables or the rear brakes themselves: out of adjustment, worn out or broken parts. Fully release the parking brake and give it a little gas: doesn't want to move?: Stuck or broken parts or cables. Give it a little more gas: Eventually slowly moves and eventually stops again when releasing the gas?: Adjustment needed. <or> Suddenly releases with a "bang/clunk" and off you go? See previous: Adjustment, stuck or broken parts.