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What to do when the service engine soon light comes on - 2002 Oldsmobile Alero The reset button is for oil change tire pressure low Thanks?

The "Service Engine Soon" light on your 2002 Oldsmobile Alero is not reset by the oil change or tire pressure buttons. That light indicates a problem detected by the car's onboard diagnostic system (OBD-II). Ignoring it could lead to further damage and expensive repairs.

Here's what you should do:

1. Don't panic, but don't ignore it: The light doesn't necessarily mean a catastrophic failure. However, it does mean something needs attention.

2. Get the code read: You need to get the diagnostic trouble code (DTC) read from your car's computer. This code tells you *what* the car's computer detected. You have several options:

* Auto parts store: Most auto parts stores (like AutoZone, Advance Auto Parts, etc.) will read the code for free.

* Mechanic: A mechanic will read the code and can often diagnose the problem based on the code and a visual inspection. This is usually the best option as they can properly assess the issue.

* OBD-II scanner: You can purchase a relatively inexpensive OBD-II scanner for your own use. These plug into your car's OBD-II port (usually under the dashboard) and display the trouble code(s). However, interpreting the code might still require some knowledge.

3. Address the problem: Once you know the code, you can research what it means (many online resources are available) or take it to a mechanic for repair. The problem could be anything from a loose gas cap to a more serious issue requiring significant repair. Ignoring the problem could lead to bigger, more expensive repairs down the line.

4. Don't just reset the light: Simply clearing the code without fixing the underlying problem will only temporarily turn off the light; the light will come back on as soon as the problem reoccurs.

In short, get the code read and then address the underlying problem. Don't just rely on resetting a light that's not related to the "Service Engine Soon" warning.