June 9, 2009:
Cheap auto-up windows?
Personally, I would not implement this modification, since it removes control of your windows and is sure to surprise someone who doesn’t know about the modification.
Check out this MINI2 post where remmie writes:
I’ve discovered a great and very cheap mod to get the passenger window to auto-up with just a single short flick of the switch. It involves adding a 22 microfarad capacitor and a 100 Ohm resistor to the toggle switchpanel or the wiring that goes to the toggle switchpanel. These cost about 10 cents each at your local electronic-parts shop.
What it does is letting the Main Computer (BC1) think that the switch is still pressed for about 6 seconds which is enough to close the passenger window fully.
The effect of this modification is to make the “up” input to the car always stay active for 6s longer than you click for, so a quick click will close the windows, but a longer click will still close the windows! The only way to stop the windows closing is to hit “down” – the car then sees both “up” and “down” at the same time, and stops all window movement.
I much prefer my double-click auto-up solution, which is unlikely to be triggered by someone who doesn’t know the modification is present – I can see the above mod catching out the dealership, hopefully not injuring anyone, but maybe causing expensive un-needed “repair” to the car electronics!
Still, now that my circuit is no longer being manufactured (again), some people might want to try this … it is clever, and cheap, after all 🙂