jochen 4 Report post Posted July 26, 2006 Is your E39 sunroof switch suffering from failled illumination? I know of a few people who have sunroof switches in their E39s and the illumination has failled on one, or more, of the white symbols on the switch. There are 3 symbols, all 3 should illuminate orange at night On my E39 the centre symbol wasn't being illuminated. So here's some instructions on how to fix it. Make sure you have clean hands first! 1. Remove the interior light assembly - from the rear side, pull down with your fingers. The assembly will clip out. 2. Remove the panel with the sunroof switch. Reach in with fingers through the interior light cavity and press out. It's flexible, will come out easily. 3. Unplug and push out the sunroof switch, take it to your workbench. Dismantle the switch body by prying the clips open gently with a jewelers screwdriver. Some small nylon guides may fall out, don't loose them You'll see the switch is illuminated with 3 x LEDs soldered to a circuit board. LEDs have a current limit resistor, and the resistors can be broken off the circuit board if when the sunroof switch is pushed in whilst it is moving to open or close the sunroof. On mine, the resistor for the centre LED was missing. My LED was also a bit dim, so I replaced it. I selected a resistor to allow 15mA through the LED. 680 ohm worked fine. I fitted a new 1/4 watt resistor (680 ohm) on the side of the board, out of the way of the switch mechanics, so it wouldn't snag. 1/4 watt was a bit big, but I managed to squeeze it in. 1/8w would be better, or another SMD resistor if you can find one. The original resistors are SMD 1kOhm. My switch is now nicely illuminated in all 3 segments :-) Dear mr Admin guy - you may like to make this a sticky. Cheers, Jochen Quote Share this post Link to post Share on other sites
