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3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

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Old 05-07-2010, 02:38 AM   #1 (permalink)
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85 320i electrical problem (onboard computer panel and check light)

Greetings

The problem is, that the onboard computer panel lights do not react at all (they dont lit up) when pressing the button. Also the check light in the dashboard is lit up all the time. What I've noticed though is that when I turn on/off the front lights (pulling the lever out and pushing it back in), some lights in the panel react aka they flicker just for a moment.

As I've removed the floormat and the bottom cover of the steeringwheel, it's the best time to check any wires that might cause the problem. So please give some advice what might cause this issue since I have no clue about electronics.

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Old 05-07-2010, 05:50 AM   #2 (permalink)
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http://www.bimmerwerkz.com/forum/3-s...ems-32765.html
From that thread I read that the cluster computer? could be faulty, because I did have a problem with the tachometre, which sometimes works and sometimes not.

Just to make clear, my BMW is a preface 320 and thatfor many of the topics about electronical problems can't be associated with my car. Correct me if I'm wrong.
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Old 05-07-2010, 09:56 AM   #3 (permalink)
OMFG another one!?
 
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It may well be a bad main circuit board in the cluster.
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Old 05-07-2010, 12:11 PM   #4 (permalink)
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So should I first try changing the whole instrument cluster together with the circuit board and see if there's any changes? If that's faulty, does it reall affect the computer panel lights near the rear view mirror?
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Old 05-07-2010, 01:02 PM   #5 (permalink)
OMFG another one!?
 
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I think I'd start with that.
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Old 05-08-2010, 03:20 AM   #6 (permalink)
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I second that same notion from witeshark.
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