It is not a luchworm, but a device to push the lid to the outside, the so-called "clicker" button. It is protected by a rubber duster, but after washing a car there is guaranteed to get moisture cold at low air temperature.
To avoid this problem, you can drain the mechanism after the warm air or remove the moisture from the cleaning napkin immediately.
It is not difficult to open a luchet with a frozen mechanism. A credit card, screwdriver, or other suitable instrument needs to be attached to the cover on the side where it is opened. The button needs to be pressed, designed, and it's better to warm it up. You can process a problem with silicone grease or WD-40.