Steering Wheel Installation / Horn Operation - BMW Forum - BimmerWerkz.com
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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#1 (permalink) Old 08-22-2007, 07:22 AM
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Steering Wheel Installation / Horn Operation

I removed the steering wheel as part of my cruise control troubleshooting. I marked the wheel as noted in the Bentley manual to aid with re-installation. There is a small carbon pin that protrudes from the steering column; I assume this needs to fit inside the small opening on the rotating slip ring inside the wheel itself. It took some time to get everything to align. During my road test the horn kept going off when I turned the wheel.

Back in the garage, I removed the wheel momentarily, then reinstalled. This time I did not align the carbon pin with the slip ring and now the horn works only when I press down on it.

I don't understand the functionality of this carbon pin and slip ring assembly - is it part of the horn circuit? Pin alignment is not mentioned in the Bentley's manual as part of the wheel reinstall.
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#2 (permalink) Old 08-23-2007, 10:20 AM
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Pin

Do you mean the lock pin for the steering wheel that requires the ignition key to be turned to the on position to get the steering wheel fully seated onto the splined shaft?
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#3 (permalink) Old 08-23-2007, 12:24 PM
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No, it is the carbon pin, part # 32 33 1 350 750 in THIS diagram:

http://bmwfans.info/original/E30/Cab...2/ill-32_0854/
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