It sounds like you've replaced the prox and tiller sensor, which is great. The 'TRC' error typically refers to the Traction Control System. It might be worth checking the wiring and connections to ensure there are no loose or damaged parts. Also, verify that the new sensors are properly calibrated and reset. If the error persists, you might want to check for any updates or diagnostics through the Toyota system or consult the service manual for further troubleshooting steps.
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