Anyone Changed Brake Fluid & Bled With VCDS

[steamship]

Originally Posted by Regulus

I haven't done this myself. But as far as I can discover.

http://www.audipages.com/Tech_Articl...rakebleed.html seems to suggest 1 liter.

Thanks for that link. Just read it and it seems reasonably easy.

Originally Posted by MikkiJayne

Yeah a litre should do it.

VCDS is only needed to cycle the ESP pump if the system has been opened in that area or drained. For a straight fluid change it doesn't need to be done. The sequence is different for cars with ESP though:

1 - rear left
2 - front right
3 - rear right
4 - front left

The link that Regulus gave mentions doing the front left first because it has the shortest run. If I just substitute the order you've given instead, that should be okay? From what it says, it just seems to be the quickest way to drain the reservoir to the lowest level.

[MikkiJayne]

In terms of draining the reservoir, the length of the pipe doesn't matter - you've got the same volume of fluid going through it whether its an inch long or ten feet

The shortest first logic to bleed the system makes sense because any air from the master cylinder or ABS module will come out sooner. Elsawin does give the two specific procedures though - with and without ESP.

Personally I think it makes no difference either way for a fluid change

[steamship]

Originally Posted by MikkiJayne

Elsawin does give the two specific procedures though - with and without ESP.

Personally I think it makes no difference either way for a fluid change

Great. I shall delve into that as well for instructions.

[mattylondon]

Hi Sean, there's something in the back of my mind regarding performing output tests on the D3's ABS module that it logs an error that can't be erased. I remember Snapdragon posting something about it.

[Regulus]

Here is what I have on the ESP procedure.

MJ is correct of course, as always

[mattylondon]

Ignore my comment, just now realised it's your D2.