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The Audi Q3 couldn't open the fuel tank cap when refueling at a gas station
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The Audi Q3 couldn't open the fuel tank cap when refueling at a gas station

The Audi Q3 couldn't open the fuel tank cap when refueling at a gas station

March 31, 2026

When the Audi Q3 arrived at the store, the owner said that he couldn't open the fuel tank cap no matter what, so he came here to see what to do.


The mechanic tried many times but was unable to open the fuel tank cap using the normal method, and the emergency switch in the trunk also did not work. He had to use unconventional methods to remove the outer cover of the fuel tank cap, as shown in the following picture.

The external cover is fixed with a buckle and can be removed by pushing it at an angle. Then use a small knife to cut off the locking plastic block of the switch position. Anyway, this switch needs to be replaced, so let's temporarily solve the problem at hand.

As shown in the yellow circle in the figure below, the small plastic block next to it is the cut switch.

This switch is no longer functioning. Please wait until a new switch is sent before replacing it. The component shown in the red area is the fuel tank cap motor switch, which is more prone to problems.

Master close the fuel tank cap and then install the outer cover of the fuel tank cap

The cover on the outside of the fuel tank cap is easy to install, all with snap fasteners

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