Cigarette lighter TPMS shows garbled code, how to fix?

When your cigarette lighter TPMS (Tire Pressure Monitoring System) display shows garbled characters, scrambled symbols, or unreadable text, it indicates a communication or display error between the monitor and its data source. This is typically a solvable issue related to power, interference, or the unit itself. The solution involves a systematic troubleshooting approach, starting with the simplest fixes.