Speedometer works when driven but then stops working

1999 BMW 740
169,000 MILES • V8 • 2WD • AUTOMATIC
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MJW6565
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Recently bought from private owner; Cam sensor code noted, replaced, code cleared, no return; Left Rear Wheel Sensor Code; Brake - ABS - Air bag lights on dash lit; Speedometer works when cranked but then stops working within - 50 miles, sometimes does not work after initial cranking; cruise control does not work when speedometer is not working and sometimes works when speedometer is working, not consistent.

Replaced left rear sensor - appeared to solve problem other than lights on dash - with-in 50 miles problem surfaced again. Any thoughts on what to do next or something that should have been done first.
Apr 7, 2010 at 11:05 AM
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DOCHAGERTY
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It will require coding to function properly. Error faults for wheel speed sensors usually indicate the fault as the DSC control module/repair kit. A junkyard can be cheaper,
Apr 15, 2010 at 8:16 AM
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MJW6565
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That is what I was thinking but your confirmation and part break down are very helpful. Now I know the detail of what to do. Looking for the part now, will keep you posted as to success.
thanks
[quote:4d4453bb81="Dr. Hagerty"]http://www.realoem.com/bmw/showparts.do?model=GH83&mospid=47531&btnr=34_1532&hg=34&fg=20
Part #2 is suspect. It will require coding to function properly. Error faults for wheel speed sensors usually indicate the fault as the DSC control module/repair kit. A junkyard can be cheaper, try Autobahn @ (619)444-2290
John and Sean are the owners, tell em I sent ya.[/quote:4d4453bb81]
Apr 20, 2010 at 7:58 PM
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MJW6565
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Pulled the DSC unit

Sent it off to be redone

Problem solved.
Thanks Dr. Hagerty
May 28, 2010 at 4:42 PM
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STRAILER
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Thanks for the update, glad we could help.

2Carpros.com
Oct 13, 2014 at 10:29 AM