Low speed braking

[andrewwynn]

Two separate bleeding functions in foxwell. Did you do them both? Also did you use pressure @ reservoir or vacuum at the wheels? Vacuum method is said not to work.

[Mistermorgan]

I’m using NT510 and it only has one function, I was using vacuum at the wheels.

I’ll give it another go today with pressure at the res - would I be better off using INPA for the bleed function or does it not exist in there?

[andrewwynn]

Originally Posted by Mistermorgan

I’m using NT510 and it only has one function, I was using vacuum at the wheels.

I’ll give it another go today with pressure at the res - would I be better off using INPA for the bleed function or does it not exist in there?

NT 510 should have both steps one is for abs block one is for pump.

34 00 050 Bleeding brake system with DSC.pdf

Pdf of bleeding procedure. I just realized that's for e70 but most should be the same.

BMW calls for pressing the brake pedal during the process but supplies fresh fluid though a pressure bleeder I wouldn't consider another option. Vacuum can create bubbles.

[80stech]

The best way to bleed brakes is with a second person on the pedal. Vacuum won't do it and pressure bleeders are a cheat for when you need to do it alone. You need to get enough flow to force air out of the high spots (like the front brake lines where they go into the hoses.) The scan tool procedure is only to get the last bit of air out that might be trapped in or in front of the ABS valve/pump. When changing the master cylinder it's a good idea to start bleeding there. Sometimes the last bit of air will slowly come out of the compensating port overnight.

[EODguy]

Don't forget that the e53 has you do each wheel is a certain order and going out of that order does seem to leave bubbles in the ABS block.

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[Mistermorgan]

Thanks Andrew!

The pdf didn’t load - mine has a brake bleed procedure option and a brake line mix up option. I’m running the latest firmware


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[andrewwynn]

Try again I had to edit my post three draft saved didn't save the PDF properly had to re attach

[Mistermorgan]

Hero thanks mate, may be a silly question but rear right means if you’re sitting in the car, looking forward right? Should I swap this to rear left for a RHD vehicle this is the calliper furthest from master cylinder


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[andrewwynn]

Best to pull TIS for your model car. Depending how they run the lines for RHD it might still be right rear first.

RHD & LHD should make it clear which side is left and right.

[andrewwynn]

I'm planning to change my brake fluid soon and will have to run the procedure to clear the abs block. I'll look in foxwell for the options and share what I find.