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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 03-09-2010, 11:54 AM
Takechan Takechan is offline
E39 fanboi
Location: Scandinavia
 
Join Date: Mar 2009
Posts: 244
Mein Auto: BMW E39 520i (M52B25)
E39 changing brake fluid - ABS pump???

Hi,

I've been considering changing the brake fluid in my car. I've read a few guides about it and the best i've been able to find is for an E36.

At one point he writes:

"Bleeding a car equipped with ABS can, in an extreme case, require the use of factory diagnostic equipment to turn on the ABS pump." Doug's Domain

Does this old true for our good "old" (mine actually is old) E39?

I've done a few searches on this board, but I haven't been able to find any information that requires you to mess with your ABS unit. Could someone please confirm?

I gather it's pretty much like this?

1. Take out as much of the old fluid as you can and put in new
2. Apply 10+ PSI of pressure to the reservoir
3. Go to the right rear and bleed until it changes color (to the new?) and refill
4. Bleed rear left and refill
5. Bleed front right and refill
6. Bleed front left and refill

That's it? Btw if you pressurize the reservoir do you open the bleed screw before you start pressurizing or after? I imagine i'd be a little slow so i'd drain too much if I couldn't close the bleed screw fast enough.

In Doug's guide he says you could potentially screw something up if you let it run dry, but on Pelican Parts they say you just have to start over:

"Make sure that you don't run out of brake fluid in your reservoir, or you will have to start over again." Pelican Parts
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  #2  
Old 03-09-2010, 12:17 PM
bluebee's Avatar
bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
 
Join Date: Mar 2008
Posts: 21,010
Mein Auto: 02 BMW 525i M54 auto 130K
Here's how the revered cn90 (and MaxVQ and others) bleed E39 brakes.


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  #3  
Old 03-09-2010, 12:28 PM
Takechan Takechan is offline
E39 fanboi
Location: Scandinavia
 
Join Date: Mar 2009
Posts: 244
Mein Auto: BMW E39 520i (M52B25)
Bluebee,
I actually have an air compressor, thanks for the link!
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