Our 2012 E70 just passed 100k miles today and got error P0890 "Traction Control Module (TCM) Power Relay Sense Circuit Low" several times and couldn't switch gear, the error cleared up after a few restarts of engine.

Searched online and suspected the battery(original) could be issue, measured voltge of the battery at 12.36v/14.8v(engine off/on). The off voltge seems low

Went with Autocraft Platinum from Advance Auto Parts, paid $130 + tax after 25% off and 8% topcashback.

Called dealership, they offered original battery at $400+, but $300 other 95ah battery with lifetime warranty.

Thanks this thread, Autocraft Platinum is exact fit according to AAP website although 95ah vs 90ah, and the dimension is identical.

Registered with INPA. It was a very easy swap and coding.

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2012 X5 35i: Hitch installed; Coded;