Zeta

Good list. Couple of comments:

I don't believe water pump problems relate to plastic impellers. I would use an OE pump myself.

If you change the TC fluid before the light comes on you still need to reset the TC with the same tool, according to the service manual.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue