I hear you but in my case I already know if the wire harness, just not what end yet.
Will be working on this later on today.


UPDATE:
I took the truck to my guys at a local shop I sometimes use.
They suggested I look at and if needed replace Throttle Body wire harness.

- I cut the wire harness protective housing in half to see if any of the conductors were rubbed through, all look great
- next I traced all six wires all the way back the the computer (located in engine bay passanger compartment under the cabin filters), all tested good and did not appear to be shorted to each other
- I stripped the dash (glovebox, display center and right vent grills) and looked at all wires in there to make sure nothing was rubbing on the metal frame of the dash (this was suggested in some writ up I sound but I believe has no connection to this issue)

My mechanic deleted all the codes when I dropped the car off and it has worked good since they did that. Obviously this appears to be a problem that develops over time.

Next on to more troubleshooting. (updates coming)

Any update?


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Bump as my 2010 X5M is shitting the bed...new drivetrain fluids a year ago, 90ah AGM & registered within a month, voltages read from mid 13's to a high of 15.1 but averages 14.5, wheel speed sensors cleaned this week.

I’ve read the steering angle clock in the steering column could also be bad or the actual actuator on the transfer case. I’m in the exact same boat and spot as you...


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AWD and DSC malfunction, Engine malfunction, DBC malfunction
 

Also, another UPDATE:
Pulled glovebox to check wiring and found that my wires had been wrapped in felt tape(this was a TSB regarding the extremely sharp edges of the metal in the dash rubbing and cutting threw wires and causing crazy and random codes, including 5DEA), so I removed the felt tape to inspect the wiring. I did find what appeared to be 2 wires that seemed to have been shorted to ground at one point. I traced these wires and they went to a suspension control box on the far right(passenger side dash-accessible by removing plastic between dash and door panel). So, I don’t believe in my case these shorted wires effected my issues. But I did also find my blower motor had a wire that was barely holding on and a wire in the suspension wire harness that wasn’t totally connected in the connector... I have preformed this repair, retapped the wires with just electrical tape, but covered the wire and metal with automotive black carpet to protect at all areas of concern and glued them in place. I haven’t driven the truck enough yet to see if this fixes my 5DEA code or not, I’ll update when I know more... https://uploads.tapatalk-cdn.com/201...57f1139053.jpg https://uploads.tapatalk-cdn.com/201...6a6a04f57a.jpg Wire traced to module https://uploads.tapatalk-cdn.com/201...4a3688fa0d.jpg Rubbed through felt https://uploads.tapatalk-cdn.com/201...f1a28e42c7.jpg Not clicked in all the way https://uploads.tapatalk-cdn.com/201...9296a7d2cd.jpg Small wire on blower motor harness one or two strands holding the wire on. Is this why there’s a TSB and BMWs are burning to the ground with issues at this connection?? [emoji15]https://uploads.tapatalk-cdn.com/ ...a686b87114.jpghttps://uploads.tapatalk-cdn.com/201...8f85e30726.jpghttps://uploads.tapatalk-cdn.com/201...0556ca7cbd.jpghttps://uploads.tapatalk-cdn.com/201...996f80af41.jpg20181101/02a1e9a6ac54b31f5f7330907d02fd0a.jpg[/IMG] https://uploads.tapatalk-cdn.com/201...51754c528a.jpgBare metal https://uploads.tapatalk-cdn.com/201...9c19958b96.jpg Now protected in carpet https://uploads.tapatalk-cdn.com/201...e20a75a80c.jpg Wires protected in carpet


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shorted/grounded wires at various locations CAN have an impact on modules far away if they interact with the bus communications in some way.

just fyi

Great. Please explain in greater detail please...


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This fix your issues, BoostedX5M. I'm gonna pull my glove box for shits and giggles seeing as the throttle body harness sounds 4.8i specific but this wiring issue is likely E70 generic and I'm not gonna wait until BMW figures out common errors across multiple platforms can happen, ie N54 and S63 injectors are the same, fuel pumps, etc etc but since there's fewer X's (and even fewer X5M's) on the road vs 3's that we get the tail end of these SIB's.

Here is one TSB. It’s not the original TSB, as the original has the throttle body wiring you mentioned.

Here’s another one I found.. https://bmw-worldzz.blogspot.com/201...nical_210.html



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I'm not seeing a PDF but between your pics and link, I'm just gonna pull it when I get home. On a side note, how'd you find this...I've Googled so much god damn stuff lately and haven't seen this site. I wish we had access to BMW's "info only" data collection since I'm sure they get a ton of stuff before they decide what fuckups they're gonna own up to.