1. Identify the cause of the service engine light. The service engine light can be triggered by a variety of issues, so it's important to identify the cause before attempting to turn it off. You can do this by using an OBD-II scanner to read the trouble codes stored in the vehicle's computer.
2. Repair the underlying issue. Once you know the cause of the service engine light, you will need to repair the underlying issue. This may involve replacing a faulty sensor, repairing a vacuum leak, or performing other maintenance tasks.
3. Reset the service engine light. Once the underlying issue has been repaired, you can reset the service engine light by disconnecting the negative battery terminal for 10 seconds. This will clear the trouble codes from the vehicle's computer and turn off the service engine light.
It's important to note that simply resetting the service engine light will not fix the underlying issue. You must repair the underlying issue in order to prevent the service engine light from coming back on.
If you are unable to identify or repair the cause of the service engine light, you should take your vehicle to a qualified mechanic for diagnosis and repair.
