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#1 (permalink) Old 10-13-2013, 11:38 PM
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No back light on instrument cluster

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Bought our first BMW a used 2000 528i for my sons 1st vehicle, there was a couple of electrial issues we were aware of and thought they were related or linked, the power seat wasn't working without playing with it and the power steering column wasnt working and the back lights on the gauges were flickering, anyways the power seat got completely unplugged so the seat, column and the backlights went out, pins on the seat were bent and we were able to get those straightened and the harness secured properly and the seat works as well as the steering column but no gauge lights at all not even faint. i pulled the cluster to check connections (due to the flickering) and check the bulbs and of course my cluster looks nothing like the one posted on the forums that I have seen (pic attached) I have checked all the fuses in the trunk and the glove box nothing blown, did bmw make some with Led bulbs mounted to the board or do I need to crack the cluster open and if so is there a trick to that? Lights on the light switch work as well as the radio and the dimmer seems to work on the radio as well. Any suggestions would be very helpful...
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#2 (permalink) Old 10-15-2013, 08:15 AM
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You can open the cluster and check the boards for cracked or worn solder. Replacing the bulbs is also possible once the cluster is opened.


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#3 (permalink) Old 10-15-2013, 10:15 PM
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Ok so I figured out how to get the cluster open, without any info one the web. Strip it down to the circuit board and everything is LED so no luck with bulb replacement ghead: Good news is that everything still works as it did! It looks like there is a clear plastic plate behind each gauge with 4 pins that line up with a LED on the board. Guess on to trouble shooting backwards from there now. Wish there was more info about this issue. Flying blind. 1 st BMW in the family and I have been impressed with the quailty so far just on a learning curve

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#4 (permalink) Old 10-16-2013, 09:41 AM
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Thats news to me that a 2000 has LED's. I know the E36 used bulbs, and thought the E46 did as well. I have seen threads about guys doing bulb color swaps in the past.

If you have confirmed that the cluster is working, start inspecting the connectors and the wiring leading to the cluster itself.


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