Heated rear window
Discussion
Thought this tip might be of use to some of you.
My heated rear window worked intermittently and then stopped all together, the red LED would not come on when the button was pressed. The Heated mirrors still worked fine though, along with all the other heating/cooling controls.
Anyway, I eventually decided to take a look at the black box that controls all this (located in passenger footwell). On dismantling it, I could see that there are 2 circuit boards stacked one above another, with nice ribbon cables connecting the two to allow for movement. Except (in true British engineering style...) 2 resistors that connected the 2 boards, being soldered straight between them. One of the resistors had stress fractured as the 2 boards moved slightly in relation to one another…….
So, one 7p 1000ohm resistor, and a bit of soldering later and all was well. I also used some extra long bolts and spacers to keep the 2 boards a fixed distance apart.
My heated rear window worked intermittently and then stopped all together, the red LED would not come on when the button was pressed. The Heated mirrors still worked fine though, along with all the other heating/cooling controls.
Anyway, I eventually decided to take a look at the black box that controls all this (located in passenger footwell). On dismantling it, I could see that there are 2 circuit boards stacked one above another, with nice ribbon cables connecting the two to allow for movement. Except (in true British engineering style...) 2 resistors that connected the 2 boards, being soldered straight between them. One of the resistors had stress fractured as the 2 boards moved slightly in relation to one another…….
So, one 7p 1000ohm resistor, and a bit of soldering later and all was well. I also used some extra long bolts and spacers to keep the 2 boards a fixed distance apart.
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