70mA (not 700mA) is pretty low but it seems a bit more than is normal (~18mA).

The fan speed control component (output stage, N2 - a.k.a. the final stage resistor or "hedgehog") is a likley problem. It has it's own supply (via fuse 64) but has signals from the IHKA module (fed from fuse 48).

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Wayne
2005 BMW X5 3.0d (b 02/05)
2001 BMW F650GS Dakar (b 06/01)