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Hola amgios - I have a 2010 750Li X-Drive, and it's been throwing a P0128 code. Some research shows that this is probably due to the coolant temperature sensor for the coolant leaving the engine. I'm at a loss for figuring out where this is. Looking through the service manual, I see a diagram, but no luck on actually translating that to a location. Could anybody tell me where it is? Thank you!
 

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Nice to know, while i am stopped i hear the water running through the hoses with a lot of bubble noise which I think it has air. Any idea how to take the air out because it doesn’t heat properly


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Check the coolant level. Make sure you are not low. Search these forums or YouTube for "Bleeding BMW coolant system" for some answers. I've never done that before so can't offer any advice.

Jerry
 
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