So I have a problem to solve again, slowly it goes forward with the 21 year old grandma... now the rear window heating is on. It doesn't work somehow, for (still) unknown reason. I thought it was the switch at first, because I had a similar problem with the 4.2, but it's not. The fuse is also complete to work the relay SHOWS, but cannot confirm this, just hear it clack.
Does anyone have any other idea what it might be like?
When I press the switch, the yellow triangle only glows until I let go again, then not anymore.
I hope to get this problem under control soon...
PS: don't send any circuit diagrams, because I can't frustrate anything