* Engine light (Check Engine Light, CEL): This requires diagnosing the problem causing the light to come on. A simple reset won't fix the underlying issue. You can disconnect the battery's negative terminal for a few minutes (this will reset the computer), but the light will likely return if the problem persists. A scan tool is needed to read the diagnostic trouble code (DTC).
* Radio presets: This is usually done through the radio's controls. Consult your owner's manual for the specific procedure.
* Trip odometer: This is usually reset using a button on the instrument cluster. Check your owner's manual.
* Computer system (PCM): Disconnecting the battery negative terminal for a while will reset the Powertrain Control Module (PCM) and other onboard computers. However, this is a drastic step and should only be done if you understand the potential consequences (e.g., loss of radio presets, personalized settings).
* Service reminder: This is typically reset through a sequence of button presses on the instrument cluster. Your owner's manual should detail the procedure.
* Other systems: The Charger has numerous electronic systems. If you have another specific system you're trying to reset, please specify.
To get the most accurate answer, please specify *what* you are trying to reset. And consulting your owner's manual is always a good first step.
