Thread: First Brake Job
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      08-23-2011, 10:44 AM   #19
kcalhoun27
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Quote:
Originally Posted by Joshboody View Post
Can you explain the need to use a scan tool for bleeding. How is it used? I can't see where this would be needed for bleeding and/or replacing brake fluid. Of course you need to reset change interval after replacing fluid.
the manual says that the scan tool will use "pulsations or vibrations" to remove air from the brake lines, thereby ensuring no air is trapped in them. I personally think its a rather over engineered system, but BMW seems to think otherwise. There is a write up for doing the bleed without a scan tool, but i dont see how its useful because its the same thing just without the scan tool and a warning that says if you are absolutely sure no air has been introduced, youll be fine. but it then alludes to the idea that opening any part of the system will introduce air.