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How do you reset the change oil soon light on a 2003 buick century?

The 2003 Buick Century doesn't have a single button to reset the "Change Oil Soon" light. The reset procedure involves a sequence of actions using the odometer. The exact steps vary slightly depending on the specific trim level and whether it has a digital or analog odometer. However, the general procedure is as follows:

1. Turn the ignition to the "ON" position (without starting the engine). The instrument cluster should illuminate.

2. Locate the trip odometer reset button. This is usually a small button on the instrument cluster, often near the odometer display itself. It may be labeled with a small triangle or have a reset symbol.

3. Press and hold the trip odometer reset button. You may need to hold it for several seconds, or press it repeatedly in a specific sequence.

4. While holding (or repeatedly pressing) the button, cycle the ignition switch. Turn the key from "ON" to "OFF" and back to "ON" quickly (typically within a few seconds).

5. Continue holding (or pressing) the button until the "Change Oil Soon" light goes off. The odometer display might flash or show different messages during this process.

6. Release the button. The light should now be off, and your oil life monitoring system should be reset.

If this doesn't work:

* Consult your owner's manual: This is the most reliable source for the specific reset procedure for your vehicle. The manual will have diagrams and precise instructions.

* Try different button combinations: There might be slight variations depending on your car's configuration. Try holding the button longer, or experimenting with short presses instead of holding.

* Consider an OBD-II scanner: A more advanced option is to use an OBD-II scanner to reset the oil life monitor. This tool plugs into your car's diagnostic port and can often reset various warning lights.

Important Note: Resetting the "Change Oil Soon" light doesn't actually change your oil. It only resets the monitoring system. You should still change your oil according to the recommended interval in your owner's manual, regardless of the light. Neglecting oil changes can severely damage your engine.