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Update: user installed/uninstalled JB4 without battery disconnected. He doesn't usually do it this way, but "got lazy". He damaged the ground trace on the DME. Car is now flagged by BMWNA for any DME related warranty items.
He put the JB4 back in and car is fine. I guess JB4 bypasses the DME ground trace.
Last edited by Anthony235; 02-08-2017 at 02:19 PM..
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