How to Reset a Mercedes Service Light


Resetting Your Service Indicator Light
1. Put your key into your car's ignition and turn it to the first position. Make sure your vehicle's mileage is showing. (The referenced website has instructions for all Mercedes models. These instructions are for the Models 221 and 216.)
2. Press and hold the telephone button on your steering wheel. Immediately press the "OK" button and hold them both down for at least five seconds. If done correctly the shop menu will be shown on your display.
3. Press the "Down" button on your arrow pad until you highlight the "Assyst Plus" option. Press the "OK" button.
4. Press the "Down" button until you highlight "Service carried out." Press the "OK" button.
5. Press the "Down" button until you highlight "Service due." Press the "OK" button.
6. Press the "Down" button until you highlight "Full service." Press the "OK" button. This should reset your service indicator light.