I have a 1990 325i that has this obc. How do you work it? I know the backlight is going out so it is hard to read in bright conditions. This in my opinion is just a useless toy and I don't plan on replacing it. All I really want to know is how to change the temp. to farenhite. It sometimes reads in farenhite but mostly in celcius. Both the clock and temp seem to be very accurate though. Any ideas or a link to where I can find out how it works.
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