[A4] Question 2, ABS Rebuilders...

[Derek Pulvino]

Peter,

I had the ABS light come on, at first intermittently and then by the end it was constantly illuminated.  I could feel slight pulsations in the brake pedal when slowly depressed, but the clinchers was VAG-COM could not connect to the ABS "brain" at all.  MM found some broken wires/connections upon opening the thing up.  I'll be curious to see if I still feel the pulsing on reinstall.

Stupid, stupid Audi (or maybe stupid, stupid Bosch).

dp


> Date: Thu, 12 Feb 2009 15:45:06 -0500
> Subject: Re: [A4] Question 2, ABS Rebuilders...
> From: 4pkirby at gmail.com
> To: dbpulvino at hotmail.com
> CC: A4 at audifans.com
> 
> What were the symptoms of ABS failure:
> 
> ABS light on?
> ABS pulsation at low speed?
> Getting disconnected from ECU when using VAG-COM?
> 
> I'm asking because on my car the ABS pulsates at very low speed when
> braking yet the ABS light does not come on.  If I connect VAG-COM to
> look at brake functions, everything is fine for a while and then I get
> disconnected.  My mechanic immediately said it was the ECU but then we
> did the same test on a A4 with working ABS and it also would
> disconnect from the VAG-COM (albeit at higher speeds).
> 
> Thanks.
> 
> Peter
> 
> On Fri, Feb 6, 2009 at 2:40 PM, Derek Pulvino <dbpulvino at hotmail.com> wrote:
> >
> > So busy weekend planned.  Finally got some VAG-Com and confirmed the ABS unit is incommunicado.  The two places I'm looking at for rebuild are Module Masters in Moscow, Idaho and Auto Electronics in Rogersville, Tennessee.
> >
> > http://www.autoecu.com/http://www.modulemaster.com/en/wizard/bosch_53/bad_module.php
> > MM is closer to Seattle, so shipping would be less, but AutoECU is less expensive (about $100 vs $160), offers a longer warranty (lifetime vs 5-yr), and covers return shipping costs.  My pocket-book says go with AutoECU.  Anybody have any bad experiences and/or recommendations for either?
> >
> > dp