PSM and brake fluid flushing

[Eric G]

+1 on San's comments. I have used bleeders over the years, but holy cow the pressure bleeder from Pelican... what took two people and about an hour and a half to less then 20 minutes. Once you use it you will never look back...oh, buy the universal adapter as you can do any other vehicle.

[mikehkang]

Thanks for the prompt reply San Rensho and Eric.

What concerns me is the following description from Pelican.

"For cars with traction control or Porsche Stability Management (PSM), you need to use the Porsche System Tester 2 (PST2) in order to activate the valves in the hydraulic unit during the bleeding process. If your car has a “PSM off” switch on the dashboard, then you will need to go to a shop that has a PST2 so that the brake system can be bled properly."

I've also read other instructions that say, while not ideal, I can flush PSM equipped car without the PST2.

SR and Eric,
Do your cars have PSM?

Also, yes, the power bleeder IS the way to go.
Perhaps you do the same but I don't fill the power bleeder with brake fluid.
I use the bleeder to generate pressure and fill the reservoir in the car.
While this method takes a little more time, I always have my power bleeder clean.

[stephen wilson]

I flushed my '06 with PSM with no issues. The consensus is as long as it's just a flush, and you don't get any air into the system, you don't need the PST2. The small amount of old fluid that is left will disperse in the new fluid, until the next flush.

[mikehkang]

Originally Posted by stephen wilson

I flushed my '06 with PSM with no issues. The consensus is as long as it's just a flush, and you don't get any air into the system, you don't need the PST2. The small amount of old fluid that is left will disperse in the new fluid, until the next flush.

Thanks.
I am going to do it now.

How many liters did you use?
The Pelican lists 3plus qts or almost 3 liters and I am guessing that with PSM.
Do you need less if you ignore PSM?