Btw... Looks like my waterpump is on its was out. I have a small coolant leak under the front of the engine. I don't see any coolant when I park my 135i, but I can see coolant at the front of the engine/radiator - inside the belly pan. A friend of mine who is a BMW tech says its very common for the e-pump's to develop a leak at the casting seam.
I'm at 124K kms - with my US spec 135i. :/