To clear the engine management light (check engine light) on a 1996 Chrysler Town & Country, you need to:
1. Repair the underlying problem: The check engine light illuminates because the PCM has detected a fault. Ignoring the light and simply resetting it won't fix the problem, and it may reappear immediately. You need to diagnose and fix the issue causing the code.
2. Use a scan tool: A scan tool (OBD-II scanner) is necessary to read the diagnostic trouble codes stored in the PCM. This will tell you exactly what the problem is. Auto parts stores often offer free code reading services.
3. After repairs, clear the codes (if necessary): Once you've repaired the problem that triggered the check engine light, many scan tools can clear the codes. Some higher-end tools can even perform this task remotely. After clearing the codes, the check engine light should turn off after one or more drive cycles (start the car, drive for a while, and turn it off again).
Important Note: There's no way to reliably reset the PCM without a scan tool. Disconnecting the battery for a short period might sometimes work, but it's not guaranteed and might not erase all codes. It also risks losing radio presets and other vehicle settings. Using a scan tool is the proper and recommended method.
