fill your tires!
Prior to completing this procedure, the most important step is to make sure you have set your tires to the correct pressures. You can find the correct pressures on the inside of the door panel or in the drivers manual usually found in the cars glove box. (this is a highly rated tire pressure gauge)
turn the tire light out on your dash!
To reset the TPMS system on a 2020 Mercedes, your going to use the key pad on the left side of the steering wheel that controls the screen directly in front of the steering wheel. There is a back button on the left, (an arrow pointing left), a square button in the middle and a home button on the right. Select the “home” button, then scroll all the way to the left. Once you get to “service” click the middle square button to select it. Now in the service tab, scroll down and select “Tires”. After selecting “tires”, a message will come up that reads, “Tire pressure will be displayed after driving a few minutes”. With this message displayed, Use the square button to scroll down, a new message will appear that reads, “Use Current Pressures as New Reference Values? For OK: Press Touch Control”. This means select the square tab button one more time.
conclusion, all done!
After you have completed this process, if you had a TPMS warning lamp on the dashboard, it will have disappeared. It is extremely important to have set your tires to the correct pressures before completing this process. For more information about what TPMS are and how tire pressure monitoring systems work.