What you likely need to do depends on the specific problem you're experiencing. There are several possibilities:
* Resetting the ECM (for minor glitches): This often involves disconnecting the negative (-) terminal of the battery for about 30-60 seconds. This clears the short-term memory of the ECM. Reconnect the terminal and try starting the vehicle. This is a good first step for minor electrical issues or erratic sensor readings. Caution: This will reset your radio presets and possibly some other settings.
* Addressing a specific problem: If you're experiencing a specific problem (check engine light, malfunctioning feature, etc.), a simple battery disconnect might not solve it. You'll need to:
* Diagnose the problem: Use an OBD-II scanner to read diagnostic trouble codes (DTCs). This will pinpoint the issue. Auto parts stores often offer free code reading services.
* Repair the underlying problem: Based on the DTCs, you'll need to fix the faulty component (sensor, actuator, etc.). This might require professional help.
* Clear the codes: Once the problem is fixed, the scanner can clear the DTCs.
* Dealing with a more serious issue: If the problem is serious (e.g., the vehicle won't start at all), a simple battery disconnect is unlikely to help. You'll need professional diagnostic and repair services from a qualified mechanic.
In summary: There's no "reset computer" button. Disconnecting the battery is a general troubleshooting step for minor electrical issues. For more significant problems, professional help is usually required. Be specific about the issue you are facing to get more targeted advice.
