With my sorento from 2006 the rear wiper became independent some time ago: He turned on himself and did not let himself off again, but came to rest after a while. Even if the fuse was taken out, the wiper continued. Only when the battery was disconnected, the wiper was also shut down. I had found out that I could get the wiper to stand, when I switched on the front wiper when the vehicle was shut down and then, if all of the wipers were closed, Wipe itself in the direction of rest position, the ignition shut down. This usually led up to two weeks ago also to the fact that the rear wiper gave rest when starting the vehicle. Now, however, it is the case that the rear wiper starts as soon as I turn on the ignition, and does not calm down again by itself. My KIA workshop could not explain this phenomenon, even two other KIA representatives in the surrounding area had no explanation ready. Iter immediately concluded on a defective relay, which can only be bought from KIA. But this diagnosis has not been accepted at the KIA-Werstätten. I was advised at a KIA-Werkstatt to have the appropriate electrical equipment measured. But my experience with “inexplicable” vehicle problems makes me suspect that this could lead to the fact that parts are replaced until the error is gone without really clarifying the cause. I so hope that someone here who understands so much about auto electrics can make a diagnosis based on my descriptions that leads me to the source of the error.