How do you reset check engine light on c230?

To reset the check engine light on a Mercedes-Benz C230, you can use an OBD-II scanner to clear the error codes stored in the vehicle's computer. Simply connect the scanner to the OBD-II port, turn on the ignition, and follow the scanner's instructions to erase the codes. Alternatively, you can disconnect the car's battery for about 15 minutes to reset the system, but this may also reset other settings. Always ensure that any underlying issues triggering the check engine light are addressed before resetting.