Find how to reset any maintenance light or reset oil life after an oil change for all makes and models.

Oil service reset GLK – Class


1. Turn the ignition to position 1. Ensure mileage is displayed.
2. Press the left arrow repeatedly until the TRIP option is highlighted.
3. Press and hold (phone) button and within 1 second press OK and then hold both buttons for 5 seconds. The shop menu is displayed.
4. Press down repeatedly until “”ASSYST PLUS”” is highlighted and confirm with OK. ”
5. Use the down arrow to select “”FULL SERVICE”” and then confirm with OK. Use the down arrow to select YES and confirm with OK. “”CANNOT BE UNDONE”” displays. Use the down arrow to select CONFIRM and then confirm with OK. The display reads “”FULL SERVICE CARRIED OUT””. Confirm by pressing OK.”
6. Turn the ignition off and then start the engine to verify the indicator has been reset.

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