[s-cars] abs purge procedure

[Keith Maddock]

I'll second Bob's procedure, we often due this in a pinch when working
on an early prototype unit which doesn't have a electronic controller
with a functioning bleed routine in the software.

Though the question is why you need to bleed the ABS controller - the
only time you should really need to do this if the unit has been
disconnected.

If this is the case, I advocate (as Bob mentions) a very very thorough
bleed of the brakes before activating the ABS unit for several stops,
and then another thorough bleed.

This of course is easier said when you're not paying for the labor
time and when you have brake fluid siting around in 55 gallon
drums....

This becomes more complicated for ABS units which also contain
Brake-TC (EDL) or ESC (DSC / ESP) functionality.  In this case you
really need to use the diagnostic-activated bleed routine .

Cheers,
Keith

On 12/17/06, Robert Rossato <bob.rossato_af at cox.net> wrote:
> This is the procedure using VAG-COM, but I'm not sure if it will work on
> our cars.  May be for the C5 chassis and beyond.
> http://www.ross-tech.com/vag-com/cars/absbleeding.html
>
> The other thing you could do is bleed the brakes by your preferred
> method.  Then go out on a straight deserted road and stand on the brakes
> hard enough to activate the ABS.  Do this a couple of times and then
> rebleed the brakes.
>
> Bob
>
> > -----Original Message-----
> > From: s-car-list-bounces at audifans.com
> > [mailto:s-car-list-bounces at audifans.com] On Behalf Of Mike Fitton
> > Sent: Saturday, December 16, 2006 5:27 PM
> > To: S Car List
> > Subject: [s-cars] abs purge procedure
> >
> >
> > I swear I read somewhere about a procedure to purge/flush the ABS
> > system.  I looked through the archives for the last six
> > months or so and
> > on SJM and didn't run across it.  Anyone know where it is or
> > how it goes?
> >
> > -Cheers!
> > Mike