OK. What else is there?

"PartyPooper2012" (PartyPooper2012) 09/23/2019 at 06:06 • Filed to: None

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‘05 mini cooper S.

Brake pedal has been going to the floor for no good damn reason. No leaks anywhere. Bled the brakes several times. Replaced master cylinder and bled again. No air coming out. Not a bubble.

There is talk online of an ABS pump that might have air, but I don’t think I have one of those. Should be up top by firewall and I can’t remember seeing it.

Pretending I am blind in 3 eyes and I do have it. How do I bleed it? There is talk of going to dealer and having them open valves and solenoids. That isn’t an easy task. Car has no plates on it and I don’t want it to. I don’t want to tow it to dealer. I just want to have a firm pedal.

Any ideas?

P.S. Dashboard talks about ASC, not DSC. I think and I am not 100% sure on it, but I think it means I do not have ABS?

P.P.S brakes were bled by pedal pushing method . No pressure or vacuum gizmos were used.

TheTurbochargedSquirrel > PartyPooper2012 09/23/2019 at 06:34

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All BMW made Minis have ABS. The module is in the cowl on the drivers side of the car, box with a bunch of brake lines coming out of it.   Bleeding the ABS pump is a massive pain in the ass requiring a scan tool with the ability to trigger ABS activation. Not sure the specifics of the procedure other than that you need a capable scan tool in order to do it.

I like cars: Jim Spanfeller is one ugly motherfucker > PartyPooper2012 09/23/2019 at 06:36

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You almost certainly have ABS. Look for a junction looking thing that all the brake hoses go into. It should be up close to the brake master.

If that needs bled, you will either need a dealer level scan tool (which most indy shops will have) or you’ll need to get creative with the control modules for ABS. ABS pumps are flushed by triggering them- if you can find the control wires (I don’t know how they’re wired up in your car), you can probably jumper wires as appropriate and force the pump “on” so it forces out bubbles itself.

adamftw > TheTurbochargedSquirrel 09/23/2019 at 07:15

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This. You need a scan  tool to purge the pump. They aren't very expensive, I think HF sells one for 60-70$.

PartyPooper2012 > adamftw 09/23/2019 at 07:17

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Do you happen to know the name of the tool? Make model?

TheTurbochargedSquirrel > adamftw 09/23/2019 at 07:26

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You are forgetting that Minis are BMWs. The basic tool doesn’t do it for you (at least mine didn’t).

adamftw > PartyPooper2012 09/23/2019 at 07:30

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Eh, they’re more than I thought. Anyway, this one should do it:

https://www.harborfreight.com/zr11-obd2-code-reader-with-abs-63807.html

I have this one:

https://www.amazon.com/Autel-MaxiCheck-Pro-Diagnostic-Steering/dp/B075ZLVXHY/ref=as_li_ss_tl?ie=UTF8&qid=1548703471&sr=8-1-spons&keywords=autel+maxicheck+pro&psc=1&linkCode=sl1&tag=brianok1000e-20&linkId=d4659eb414f403cd18392b2933cdfe09&language=en_US

adamftw > TheTurbochargedSquirrel 09/23/2019 at 07:31

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A basic OBD scanner or a “basic” one meaning not a MINI/BMW scanner? Most of the ~$200 scanners are Chinese copies of older high end  Snap-On scanners.

PartyPooper2012 > adamftw 09/23/2019 at 07:39

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Awesome! Thanks for the info!

I was googling while waiting for your response and found something similar - Schwaben by Foxwell ES#2975699

Claims to be a professional BMW tool. Around same price so I figure i’ll give this one last try.

Any idea of how they work? Do I need to plug the tool in, activate and leave activated while I bleed or once activated it keeps valves open?   

TheTurbochargedSquirrel > adamftw 09/23/2019 at 08:38

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My friends handheld OBD2 tool wasn’t able to do it. We had to use my Indi mechanic friend’s Snap On tablet style tool.

adamftw > PartyPooper2012 09/23/2019 at 08:52

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The tool will tell you. You’ll scroll through some options and find the ABS auto-bleed. You  keep your foot on the brake and it’ll purge the valves. 

adamftw > TheTurbochargedSquirrel 09/23/2019 at 08:52

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Did the tool not have ABS functionality or were you locked out of the car’s software?

PartyPooper2012 > adamftw 09/23/2019 at 08:56

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Awesome! Thanks again. Looking forward to this tool arriving. Brakes should not be this complicated to do

Nibby > PartyPooper2012 09/23/2019 at 09:00

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replace blinker fluid

adamftw > PartyPooper2012 09/23/2019 at 09:05

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Np. Don’t sweat it. I had to do the same thing with my ‘05 Chevy when I replaced the all of the brake lines. 

TheTurbochargedSquirrel > adamftw 09/23/2019 at 09:12

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Communicated with the car fine but was not able to trigger ABS bleeding.

Urambo Tauro > PartyPooper2012 09/23/2019 at 10:29

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Another method I’ve heard of, is to go drive the vehicle on a loose surface (like gravel) and slam on the brakes to activate ABS and cycle the valves , then go back and re-bleed the lines again. It’s definitely more time-consuming, and it might even take a couple of tries to get all the air out, but... it’s an option.

I like cars: Jim Spanfeller is one ugly motherfucker > Urambo Tauro 09/23/2019 at 10:57

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That’s a sketchy method of doing it, even by my standards

Urambo Tauro > I like cars: Jim Spanfeller is one ugly motherfucker 09/23/2019 at 10:58

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It is.