[Vwdiesel] trouble-shooting TDi ABS system (also VAG-COM issues)

[Tad]

The ABS unit is just adjacent/below the brake res, it has a "big round
thing" (ABS pump motor?) on it.

There's a VagCom routine to help bleed the ABS, but if I were you I
wouldn't go messing with that without a better idea of what was wrong.

Does your computer have a "real" serial port(most don't these days)?  The
old style cables (knockoff or otherwise) don't do well with serial port
emulators.



On Fri, Aug 1, 2014 at 11:39 AM, Rolf Pechukas <rbp at 4u2bu.org> wrote:

> hi all
>
> 2001 TDi Golf
>
> ABS light is on
>
> braking is a little shuddery
>
> I own a cheap knockoff VAG-COM cable that I can’t get to work, even with
> earlier ver 409, which is supposed to be compatible
>
> anyone know a bulletproof way to drain/refill brake fluid so that ABS
> module + all 4 wheels/sensors are happy?
>
> (I like the idea of injecting fluid upstream, from the bleed nipples
> toward the reservoir - bubbles rise)
>
> is there any mechanism to bleed air from the ABS module? and where TF is
> it, anyway?))
>
> (it could be a failed sensor, but w/o VCDS, hard to tell)
>
> thanks!
>
> Rolf in MA
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