Golf rear left door malfunction | VW

Hi thank you …but that also has full functionality…as this has only just been renewed 😅

Usually, the cable going to the rear door has a broken wire, due to opening and closing it. It's best to test it with a multimeter. Was it initially sporadic?

We and our contracted workshop have tested it, so we know that there is no broken cable... The window regulator initially worked so that the window at least went down and halfway up again... now not at all. The box sometimes works... from the front via the door module, it never opened at the rear, for example (i.e. the window), even though the module is new...

Radio installed? Short circuit to ground?

Yes, DAB+ radio, but connected in exactly the same way as the previous one 😅, just with the "converter" for the connections on it, nothing more... all the other speakers work perfectly fine 🤷🏼‍♂️

Sounds like 2 problems. Mechanics of the window regulator possibly crumbled? When the door panel is off, you can test the speaker with a 1.5 V battery and measure the incoming signals.

Android China radios are also often defective from the factory, or the previous owners of the vehicle have implemented creative custom solutions.

The workshop says the window regulator is intact… but we will check/test it again privately.

The box issue has now been resolved; when the radio was converted to DAB+, a connector was not properly inserted, and thus it played music as it pleased 😅

So only the window problem remains

Has it been getting slower and slower? And if it doesn't work at all at the end, then the plastic guides are defective.

It normally went up to about the middle and then down again... and about two weeks ago it went all the way up with pushing and now nothing works anymore.

Then a cable guide or something similar is definitely broken.

If you can still hear the window regulator motor, then I would guess it's a mechanical problem. The white deflector rollers tend to break.