I'm talking about the On-Board Computer (OBC) - Time, Temp, MPG, Range, etc. That little box. I don't know how it works, it does look like LCD, but it requires 3 conventional lightbulbs for "backlighting". When these lights are out the box still works but you can't see the display except at night. Go to that site in my first response, about 3/4 down the page is a section about the OBC. One of the articles is about the changing the bulbs, complete with photographs and annotations - quite good. Follow Gale's instructions and that will probably fix your problem. (One stumbling block may be getting the radio out. I broke down and bought the special 5-sided tool from BMW for about $15, but I've read where you can also use a small flat screwdriver.) Good luck.
[quote=Lacika]What bulbs are you referring to ? I was talking about the multifunction display. Isn't an LCD screen ?
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Originally Posted by libertylover
You may just need to replace the lamps. Also note that if the lamps were replaced before, they may have the wrong bulbs because the BMW computer has the wrong part number - it lists a 6V bulb.
I changed mine about a month ago and now I need to do it again because of this error. Go here for instructions:
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