Researchers say they have found a hardware exploit with Tesla’s infotainment system that could unlock paid upgrades for free, including Full Self-Driving (FSD) and heated rear seats. They used a technique called voltage glitching, which involves tinkering with the supply voltage of the infotainment system's processor.
“If we do it at the right moment, we can trick the CPU into doing something else,” Christian Werling told TechCrunch. “It has a hiccup, skips an instruction and accepts our manipulated code. That’s basically what we do in a nutshell.”