He scrolled down. The engineering note was blunt: “The seat heater module shares a ground splice with the left-side radar sensor array. Moisture causes the heater module to pull the ground reference voltage up by 0.6V, corrupting all CAN messages on that branch.”
A tiny, buried service bulletin from November 2024. Bulletin number T-SB-0147-24: “Intermittent CAN Bus Corruption Due to Moisture Ingress in Driver’s Seat Heater Control Module.” toyota tis online
Next time, he wouldn’t wait thirty minutes. He’d go straight to the story. He scrolled down
Leo blinked. Seat heater? The car was throwing crash sensor errors. How could a seat heater— toyota tis online
He logged out. But before shutting down, he bookmarked the service bulletin search page.