Red Triangle keeps coming on intermittently

Translated: The tech is not competent enough to find an open wire that is well documented by Toyota.

Obtaining the drawings from the Toyota TIS system would be the first thing an experienced tech would do. He would want to understand the circuit prior attempting anything. The TIS system requires paid access ($25 for two days) and some experience to navigate and ultimately understand the drawings.

TIS System

Jumping 12v past a suspected open in a wire harness by an untrained person could cause even more problems. Ecus could be permanently damaged guaranteeing a junk yard exit for the car.

P Lock C2310 Fix Fixed Solved Solution | PriusChatIt

Right now the right tech might fix it for one or two hours labor. Unfortunately dealer mechanics are not the best resource these days.

I would find an independent automotive diagnostician like Ivan at Pine Hollow diagnostics or a similar recommended shop near you.
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