Coding Help

GasBurnlife(landapanda) · 08-21-2018, 02:10 PM

Hi - I recently did a track day and had to do a full flush to get rid of some brake pedal sponginess. Unfortunately, after the full bleed w Motul RBF 660, I had the pedal again 'go through' to the floor on the next lap. After speaking to a few BMW fans, they recommended going to the dealer to do a full flush again including the ABS unit. I understand I need to hook up to the CPU to tell it to open the ABS valves while doing the flush, otherwise air could potentially stay trapped in the unit. I am pretty handy and would like to do this myself. I am looking for assistance with this process - wiring and coding instructions as well as any gotchas to be aware of when doing the full flush again. I am going with Castrol SRF DOT 4 racing fluid next.

Thanks!!
Peter

n3985 · 08-21-2018, 03:10 PM

A more DIY friendly albeit ghetto method is find a back road and engage ABS a few times, this will cycle the fluid inside ABS unit.

GasBurnlife(landapanda) · 08-22-2018, 10:19 AM

I am down with that; just wasn't sure how effective that would be. I suppose I should do a full flush first to get rid of any air in the lines to make sure I am not re-introducing air into the ABS system.

08-21-2018, 02:10 PM	#1
GasBurnlife(landapanda) Captain 576 Rep 684 Posts Drives: BMW M2 Join Date: Aug 2012 Location: Ashburn, Virginia iTrader: (0)	Coding Help - Need to Open & Flush ABS Unit Hi - I recently did a track day and had to do a full flush to get rid of some brake pedal sponginess. Unfortunately, after the full bleed w Motul RBF 660, I had the pedal again 'go through' to the floor on the next lap. After speaking to a few BMW fans, they recommended going to the dealer to do a full flush again including the ABS unit. I understand I need to hook up to the CPU to tell it to open the ABS valves while doing the flush, otherwise air could potentially stay trapped in the unit. I am pretty handy and would like to do this myself. I am looking for assistance with this process - wiring and coding instructions as well as any gotchas to be aware of when doing the full flush again. I am going with Castrol SRF DOT 4 racing fluid next. Thanks!! Peter
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08-21-2018, 03:10 PM	#2
n3985 Lieutenant 138 Rep 598 Posts Drives: a car Join Date: Oct 2005 Location: North NJ iTrader: (3)	A more DIY friendly albeit ghetto method is find a back road and engage ABS a few times, this will cycle the fluid inside ABS unit.
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08-22-2018, 10:19 AM	#3
GasBurnlife(landapanda) Captain 576 Rep 684 Posts Drives: BMW M2 Join Date: Aug 2012 Location: Ashburn, Virginia iTrader: (0)	I am down with that; just wasn't sure how effective that would be. I suppose I should do a full flush first to get rid of any air in the lines to make sure I am not re-introducing air into the ABS system.
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