That pump runs all the time when the ignition is on even without starting the engine.
Quote:
Originally Posted by trader4
Same thing happened to me. It was brittle and it broke off on me too.
As others have said, it's for supplying some heat to the cabin with the
engine off. Another innovation that's failure prone, that pump aint't
cheap, and IDK about you, but I never use that feature. He can
leave it disconnected, no harm.
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e53 '00 4.4i Oxford Green II Freshly rebuilt tranny(2nd one) and transfer case/front shaft
e70 '08 3.0si Sapphire Black cinnamon leather 7 seats
e61 '06 530XI Sports Touring Silver - SOLD
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