How to replace a faulty fuel flap actuator in Mercedes-Benz

The new style fuel flap actuator in Mercedes-Benz vehicles is not very well made. Over time, water and moisture seep in, corroding the motor and causing it to fail.

In the photo below, you will see a failed fuel flap actuator that was corroded due to water and moisture ingress.

If you experience any issues with the fuel flap opening, it’s advisable to replace the fuel flap actuator immediately. Otherwise, you’ll need to remove some boot trimmings to access the emergency fuel flap button from inside the vehicle if the actuator becomes completely unresponsive. A replacement part number is A0008205003, and you can purchase it from Mercedes or an aftermarket supplier on Amazon.

The manual emergency fuel flap release button is located on the bottom of the fuel flap actuator.

If the fuel flap actuator isn’t working, remove the boot trimmings on the side of the vehicle with the fuel flap. Then push your hand up through the opening and feel for the rubber pad at the bottom of the actuator. Press it to open the fuel flap manually.

Use a flathead screwdriver or a pry tool to pry the fuel flap actuator clip, then replace the fuel flap actuator.