1. Using a scan tool. A scan tool is a device that can be connected to your car's diagnostic port to read and clear trouble codes. Once you have connected the scan tool to your car, you should be able to find a menu option to clear the trouble codes.
2. Disconnecting the battery. This method will reset the service engine soon light, but it will also erase any other data that is stored in your car's computer, such as your radio presets and trip odometer. To disconnect the battery, simply open the hood of your car and remove the negative battery terminal cable. Wait for a few minutes and then reconnect the cable.
3. Driving the car for a certain period of time. If the service engine soon light is due to a minor issue, it may reset itself after you drive the car for a certain period of time. The exact amount of time varies from car to car.
4. Taking the car to a mechanic. If you can't reset the service engine soon light yourself, you can take the car to a mechanic to have it done for you.
