Scan Tool for ABS Bleed on '09 Cayenne?

[JBKauai]

Hello,

 

Does anyone know of a scan tool that supports ABS bleeding on a 2009 Cayenne?  I know that Durametric, iCarSoft, and Foxewll NT530 do not.

[JFP in PA]

PIWIS

[JBKauai]

Thanks, I'll check it out.

[JFP in PA]

Just be aware that a legitimate PIWIS system is a lease only item, first year nearly $20,000.

[JBKauai]

3 hours ago, JFP in PA said:

Just be aware that a legitimate PIWIS system is a lease only item, first year nearly $20,000.

That's a little above my budget. 🙂  I did some reading on this forum and elsewhere and see that there's an option to get a PIWIS on an SSD and install onto a PC as a Virtual Machine.  I think that would work for me, but I can see lots of potential for problems in getting things set up and working.

[Loren]

So, before you spend a good deal of money may I ask is this a normal brake bleed/flush or did you replace ABS parts?

[JFP in PA]

2 hours ago, JBKauai said:

That's a little above my budget. 🙂  I did some reading on this forum and elsewhere and see that there's an option to get a PIWIS on an SSD and install onto a PC as a Virtual Machine.  I think that would work for me, but I can see lots of potential for problems in getting things set up and working.

Just be aware that has to be a questionable setup, since the very first version of the PIWIS, Porsche has gone to great lengths to prevent people from upgrading or even updating non-sanctioned versions of this system, and many of the more questionable copies out in the internet are very old, meaning they do not cover models past their last valid use date, and some are even not any form of the real thing; we have even seen so called PIWIS clones that turned out to be a very old version of the Durametric software.  Caveat emptor.

[JBKauai]

On 9/13/2022 at 9:36 AM, Loren said:

So, before you spend a good deal of money may I ask is this a normal brake bleed/flush or did you replace ABS parts?

This is just a normal brake fluid flush and bleed.  About 2 years ago I replaced rotors and pads on all wheels and flushed the brake fluid.  About a week ago I flushed the fluid again. 

 

After both flushes the pedal felt a bit squishy-- it takes a bit of travel before engaging the brakes.  I'm assuming that's due to air in the brake lines, and since I did a bleed, I'm assuming it's air in the ABS. 

 

From what I've read, other possible sources of air in the system are the flexible brake lines and maybe the master cylinder, but I don't know how to tell if there's a problem there.

 

I figured that if there was a scan tool that would bleed the ABS then I could do that and see if it fixed the problem.

 

[JBKauai]

22 hours ago, JFP in PA said:

Just be aware that has to be a questionable setup, since the very first version of the PIWIS, Porsche has gone to great lengths to prevent people from upgrading or even updating non-sanctioned versions of this system, and many of the more questionable copies out in the internet are very old, meaning they do not cover models past their last valid use date, and some are even not any form of the real thing; we have even seen so called PIWIS clones that turned out to be a very old version of the Durametric software.  Caveat emptor.

Thanks for the warnings.  I'm not sure if I want to try that or not.  Ultimately I just want a firm brake pedal. 🙂

[Silver_TT]

Someone over on Rennlist bricked their transmission recently playing with a PIWIS clone.  Avoid........

[Loren]

For most normal brake fluid changes or flushes you do not need to purge the ABS system.

[JFP in PA]

1 hour ago, JBKauai said:

This is just a normal brake fluid flush and bleed.  About 2 years ago I replaced rotors and pads on all wheels and flushed the brake fluid.  About a week ago I flushed the fluid again. 

 

After both flushes the pedal felt a bit squishy-- it takes a bit of travel before engaging the brakes.  I'm assuming that's due to air in the brake lines, and since I did a bleed, I'm assuming it's air in the ABS. 

 

From what I've read, other possible sources of air in the system are the flexible brake lines and maybe the master cylinder, but I don't know how to tell if there's a problem there.

 

I figured that if there was a scan tool that would bleed the ABS then I could do that and see if it fixed the problem.

 

 

Loren is correct, unless you have allowed air to get into the ABS/PSM control network, it is not necessary to activate the system during a bleed/flush; dealerships and shops don't use one unless there is a problem as the activation actually slows down the service process, and in their world, time is money.