1. Gather your tools. You will need a scan tool or OBD-II scanner that is compatible with Mercedes-Benz vehicles. You can purchase one online or from an automotive store.
2. Connect the scan tool to your car's OBD-II port. The port is usually located under the dashboard on the driver's side.
3. Turn on the ignition and set the key to the "ON" position but do not start the car.
4. Follow the prompts on the scan tool to locate the trouble codes.
5. Once you have found the trouble codes, look up the corresponding solutions in a Mercedes-Benz repair manual or online.
6. Repair or replace the faulty components as needed.
7. Once the repairs are complete, clear the trouble codes from the scan tool.
8. Turn off the ignition and then restart the car.
9. The check engine light should now be off.
If the check engine light comes back on after resetting it, it means there is still an underlying issue with your vehicle that needs to be addressed. In this case, you should take your car to a qualified mechanic or repair shop for further diagnosis and repair.
