Replaced thermostat and dual coolant temp sensor. Kept getting DME error DME* -> 2EF4/82 - Engine characteristic map thermostat, Mechanics. Cleared the code, went for a long drive and the error has not come back.

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'05 E53 X5 4.4i, '97 E39 528, '07 E92 335i, '16 F86 X6M.