Can't get my trip computer working '84 325e - BMW Forum - BimmerWerkz.com
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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 01-02-2004, 04:55 AM   #1 (permalink)
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Just bought a 1984 325e for $1500 Canadian! Yeah. Can't get the dash computer to work. (It's the one that figures milage and outdoor temp.) Went into the instrument panel and replaced rechargeable NiCad's but still nothing. Checked the fuse box, and two slots are empty but the rest are good. Have no idea what fuses do what, as the fuse-box cover doesn't map the fuse resp0nsibilities. Am I looking at a fuse problem or what? What should i check, and what rating of fuse belongs in slots 23 and 24? I know the trip computer is a kind of a gimmick, but it would be so cool to have that working.

Mark.
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Old 01-02-2004, 07:45 AM   #2 (permalink)
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Trip Computer in BMW land is OBC, On Board Computer.

Here are diagrams from an e24 but even the fuses are the same.

Good luck, I have had one for over 20 years and it still works just fine.

http://members.roadfly.com/kcroncarter/etm123.htm


http://members.roadfly.com/kcroncarter/etm124.htm



Later,
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Old 01-06-2004, 02:40 PM   #3 (permalink)
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Thanks KCRon...the OBC is alive! But the display is very dim, and I can only see it well in bright sunlight. Does it need a new bulb installed? How do I set the clock etc.??? Also, my service indicator lights (oil, seatbelt, engine etc.) above the rearview mirror still doesn't work even after I replaced the console batteries. How do I get them going?

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Old 01-06-2004, 03:48 PM   #4 (permalink)
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Anybody know where I can get a replacement OBC for a 1990 325i? The digital display on mine is cracked. Thanks.
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Old 01-06-2004, 07:27 PM   #5 (permalink)
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radio shack part# 272-1140 6v bulbs.

It requires soldering to install in the OBC holder.

The SI is a set of lights in the instrument cluster.

The indicators near the mirror are the "Active Check Control".

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