Here are some possible interpretations and solutions:
* If you're experiencing a malfunctioning feature (e.g., radio, air conditioning, power windows): This is usually *not* solved by resetting the PCM. Check fuses first. A faulty component might be the cause.
* If you have a check engine light (CEL) and want to clear the diagnostic trouble code (DTC): You likely need to use a scan tool, often called an OBD-II scanner. These are inexpensive and readily available at auto parts stores. Plugging it in will allow you to read the codes, which will tell you what's causing the light. Clearing the codes doesn't fix the underlying problem; it just turns off the light. The light will likely return if the problem isn't addressed.
* If you're experiencing a persistent electrical issue or erratic behavior: A "reset" might involve disconnecting the negative (-) terminal of your battery for a few minutes. This allows the car's electrical system to completely power down, which *might* resolve some minor software glitches. Caution: This will clear your radio presets and clock settings.
To disconnect the battery:
1. Locate the negative (-) battery terminal. It's usually marked with a "-" symbol.
2. Use a wrench to loosen the terminal clamp.
3. Disconnect the clamp.
4. Wait for at least 30 seconds (some suggest up to 5 minutes).
5. Reconnect the clamp.
6. Start the vehicle.
Important Considerations:
* If the problem persists after trying any of these steps, take your vehicle to a qualified mechanic. Trying to diagnose and repair complex automotive systems yourself can be dangerous and lead to further complications.
* This advice assumes you have a typical 2003 Chrysler Town & Country. If you have unusual modifications or aftermarket systems, the steps might be different.
The term "reset the computer" is a very general term when applied to a car. Be specific about the problem you're having for a more accurate and helpful response.
