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      12-29-2015, 12:03 AM   #67
admranger
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Drives: ‘19 X3M40i, ‘18 m550i
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Slight correction...
Quote:
Originally Posted by BzsBimmer View Post
I think somehow you got air in the system. You have DCT so no clutch to bleed or worry about. You may need to run through INPA or take it to an indy to pulse the ABS system.

Typically I find, right after a brake flush, you need to start the car and press on the brakes and top off fluid prior, during, and after.

Assuming you went furthest from master cylinder to front, everything you did sounds correct however, the output of your effort points to air in the system.

Since the air/gas is MORE compressible than the fluid, it would make sense that you can eventually build up pressure.

There COULD be some other issue causing your symptom like a leaking master cylinder. The caliper you replaced could also still have air in it since it was new.
Also, OP, you can manually activate the ABS to try to pump some of the air out and then re-bleed. Just find an empty parking lot, accelerate, jam on the brakes like you're Mr. Brembo and viola', ABS activation. For even easier activation, do this while turning.
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'19 X3 M40 Carbon Black/Oyster, '23 Jeep Grand Cherokee L Summit, Past BMWs: '18 M550i, '18 330 GT, '16 X5 40e, '11 E90M3, '06 X5 4.4, '03 330i ZHP, '02 M3, '97 Z3 2.8, '95 M3 (2x), '94 530i (manual), '92 525i (manual), '88 M3, '87 325iS
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