How to restart run flat indicator mercedes c class?

The run flat tire indicator in Your Mercedes C-Class works in conjunction with Your tire pressure monitoring system. When the vehicle detects that there is not any air left in a tire it will let You know that You are using the run flat feature of Your OEM tires. In order to reset this system You will need to fill the tires up completely and then reset the tire pressure monitoring system. To reset the TPMS system You will need to use the steering wheel controls. First You will need to press the down arrow and scroll to Tire Pressure, press OK, then press OK again and it will read the pressures. When it detects they are normal it will turn off the warnings.