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  #1  
Old 11-24-2019, 05:22 PM
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Bleeding brakes

Had my Indy change the oil reservoir for the brake fluid. Problem was he didn’t knew that air would go in the abs so now I send the car to another Indy trying to get the air out of the abs and brakes. Before when you wanted to brake you had to push the brakes down until the floor, after bleeding the brakes are working better but still when I drive slowly towards the red lights abd want to brake the brakes are getting very soft again so driving the car seems very dangerous like this, have tried the hard breaking on a rainy day to and that didn’t fix it. Anyone knows what to do ? Also a picture attached what I have changed
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Old 11-24-2019, 07:07 PM
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You need to go to a dealer or to an indy which specializes in BMWs. They will hook up a diagnostic program like ISTA to activate the ABS while bleeding the brakes. If the brakes feel spongy it's not safe to drive the vehicle, so get this done soon. Good luck.
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Old 11-24-2019, 07:33 PM
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Yes that they already did twice but it’s still spongy. I was reading it that only the dealer has good equipment to really get all the air out of the system. Because the Indy will do the bleeding tire by tire and the dealer 4 at once. It’s only a big spongy when I drive very slow and want to stop the car.
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Old 11-24-2019, 09:56 PM
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Take it to the dealer. I had to do this once. Shame on the indy that replaced the reservoir but couldn't handle the job. Why did you replace it?
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Old 11-25-2019, 02:55 AM
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You can’t believe it but there was a whole in the reservoir. Really don’t know how that could happen. Yes the Indy didn’t knew about the bleeding process so he just took it off and all the oil flush out of it.
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Old 11-25-2019, 02:59 AM
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@lightlytoasted do in need to open the valves manually again also under each tire if I do the abs bleeding activation by ISTA ?
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Old 11-25-2019, 04:03 AM
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Quote:
Originally Posted by tmling76 View Post
@lightlytoasted do in need to open the valves manually again also under each tire if I do the abs bleeding activation by ISTA ?
Yes. Ista allows the valve circuits in the abs unit to be opened to drive bubbles out...but you still need to flush each wheel.

It can be a real pita.
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Old 11-25-2019, 08:43 AM
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Ufff seems like a dealer job
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Old 11-25-2019, 09:55 AM
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Did they use a pressure system in addition to activating the abs/stability system? The pressure combined with the vibrating is what gets all the air out. Something like this https://www.ecstuning.com/b-motive-p...eder/motivepb/


In ISTA+ go to vehicle management / service function / chassis and suspension / traction control / brake bleeding routine / brake bleeding procedure. This option will be grayed out unless you let if you let ISTA+ perform a full vehicle test first.
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Old 11-28-2019, 06:23 AM
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Just got a appointment with the dealer but they told me they want the car probably for a week, do they need such a long time to bleed brakes ?
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