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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm Total Produced: 45,000+ - Years Produced: 2001 to 2006. |
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#1 |
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Join Date: Sep 2016
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Well I let my master cylinder run dry, the calipers were off the car and my brake line plugs didn't hold.
![]() There is tons of info on bleeding MK60 units but I have searched far and wide for an INPA or DIS bleeding procedure specifically for the older MK20 DSC/ABS. When you go into INPA you have the ability to individually control the various valves and pumps but I am not sure which ones to activate to do a proper bleed. The list of things you can "activate" is below. You can select multiple things and activate them at once:
Any insight would be very much appreciated. |
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#2 |
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Bump. Nobody bleeds their MK20 DSC?
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#3 |
I'd rather be at the track.
Join Date: Jul 2015
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I have also tried to figure this out without much luck... The video below was helpful but I couldn't get it to actually activate using INPA. My assumption was the process isn't compatible with my version of the software. Would be great if someone has got this to work and can chime in.
Ultimately I used the manual process of doing an initial bleeding. Then driving the car and locking up the brakes on gravel/sand/water to kick on the ABS. Then bleeding again... |
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#4 |
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I was in the same situation as you, and I’m pretty sure I activated everything. I have no idea if the ABS was actually bled, but the car did make a bunch of noises.
I had a separate brake issue that I was trying to tackle, so I drove the car for ~200 miles and did the poverty ABS bleed method as well before bleeding all four corners again. My brakes feel great now.
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#5 | |
///M3AZ
Join Date: Jun 2018
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#6 | |
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I don't think running both pumps at once is a good idea. People that do this by jumping the relay are activating a pump but |
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#7 | |
///M3AZ
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For what it's worth, I don't think you really need INPA to bleed your brakes unless you've swapped out the pump. |
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#8 | ||
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Quote:
It would also be nice to figure this out for other MK20 users on here. I found the following diagram in a pdf: I am inclined to think based on that diagram that: PRELOAD VALVE (diagram) == ASC/DSC valve(front/rear) CHANGEOVER VALVE (diagram) == Activate DSC cut off valve (front/rear) CHARGE PUMP (diagram) == Preload Pump but that is more of an intuition than anything. It seems to me that doing a bleed would require activating the Preload Pump and ASC/DSC valve for the axle you are bleeding. But Maybe just the pump is good enough? Since the inlet valve is in a naturally open state ("activating" it should close it). |
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#9 |
I'd rather be at the track.
Join Date: Jul 2015
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Quick update, I was able to get INPA to activate the ABS using a different cable and the following steps: F3 -> Chassis -> ASC/DSC -> Hold brake pedal and active.
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#10 | |
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Join Date: Sep 2016
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Yeah I originally had trouble with my eBay cable talking to the MK20 then I soldered two pins together and it started working great. @robgill are you using the "ABS Simulation" option? Are you cracking bleed screw while doing that? Sent from my iPhone using Tapatalk |
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asc/dsc, bleeding, mk20 |
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