Hitch is all factory wiring. Have not had any issues with that.

I've been doing a lot of reading and it sounds like it may be the LRM? Not sure yet and not sure how to diagnose that.

I'll report my findings/fix.

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2004 X5 4.4 Build 01/04 Alpine White on Schwarz Dakota Leather, Anthracite Headliner
Xtrons Android HU, SPORT PKG, COLD WEATHER PKG(W/REAR HEATED SEATS AND HEATED STEERING WHEEL), CONVENIENCE PKG, FACTORY HITCH