Mercedes EQC Power Window Failure

Sounds like it could be a faulty window regulator or potentially the regulator motor itself. The error code definitely points to an issue within the window control system. Have you checked the fuse for the power windows? Also, any unusual noises coming from inside the door panel when you try to operate the car window? A failing window track can sometimes cause similar symptoms.

Fuse is fine, I checked that first. No weird noises either, just nothing. When you say window track, is that something I can easily inspect myself, or am I going to have to tear apart the whole door panel? I'm trying to avoid messing with the door panel if I can help it.

Given that the fuse is good and there are no noises, it does lean more toward the window regulator being the culprit, or perhaps the wiring to the regulator motor. While you can inspect the window track, it usually requires removing at least part of the door panel to get a good look. Considering the stored error and the symptoms, it's probably best to take it to a workshop for diagnosis. A faulty power window switch is possible, but less likely than a regulator issue. The repair cost, including replacing the regulator, should be around 200€.

Thanks for the advice! I took it to the shop, and you were right, it was the window regulator. They replaced it for 200€, and now the car window works perfectly again. Appreciate the help!