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      06-25-2019, 07:52 PM   #10
jetblk328i
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Drives: X3 M40i
Join Date: Mar 2007
Location: Central PA

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Quote:
Originally Posted by blau_340i View Post
I just called my SA at the dealership and asked him exactly what it's for:

The DME's onboard diagnostic function will miscalculate sometimes causing an erroneous CEL.

Said it may take an hour, sometimes a day depending on the vehicle. Software can crash during an update so they have to keep it there until it's updated correctly.

Hope this helps. Mine also has to go in for DME update as well.
Thanks, this is helpful! I'm wondering why it crashes so often/if this crashing is what busted my "GWS control module." Oddly the gear shifter still works just fine.
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