Brake Bleed Foxwell Scan Tool

Has anyone changed / bled their brakes using the Foxwell scan tool. I am planning on doing this on the weekend and would appreciate if anyone has done this to share their experience. Does the tool give instructions every step of the way? Do you first bleed all the calipers and then engage the tool? Do you do clutch separately and should you do brakes before clutch.

Yes - I have - on both my 987 and my Cayenne. There aren't step by step directions, it requires a bit of intelligence to use.. Basically - and I forget where in the menus it's located - there is a tool that allows you to activate the modulator circuits individually, one at a time. You want to activate the circuit for the wheel circuit you're flushing while fluid is flowing in the circuit. That requires a power bleeder connected to the master-cylinder. I'd suggest doing the normal bleed on one side of the caliper until you see clean fluid coming out, then moving to the other side, and cracking open that bleeder until you see the fluid flow, and then briefly (10-20 seconds) activate the circuit in the modulator for that wheel circuit. Let the fluid flow for a bit - you may or may not see a glug of air passing through. Once the air passes through you're done. If you don't see air - that circuit was OK - and probably 15 seconds of flush is more than adequate. Then you move to the next brake circuit. Don't forget to top off the master cylinder (if you're using a dry pressure bleed system, if you're using one where fluid is in the pressure container - just make sure the fluid hasn't run out..) You don't want to introduce air into the system by having the master cylinder go dry. The clutch circuit needs nothing but a simple flush. Pressurize the master cylinder reservoir, go below, open the slave cylinder bleeder, and let it flow until clear fluid comes out. Presto - you're done. There are warnings about activation of the modulator circuit for longer than about 20 seconds - it may cause the modulator to overheat. It isn't designed for continual activity.

thank you Don. This is very helpful. When i bleed the clutch do i need to slowly depress the pedal a few times. How much brake fluid do i need for breaks and clutch and what brand of fluid do you recommend.

I prefer Motul rbf 600 or 660 for dot4.

Max, according to the manual, in order to bleed the clutch the pedal must be pushed all the way down.. In other words, first you hold the pedal on the floor and then you open the bleeder on the slave cylinder, you do this with a power bleeder connected to the brake reservoir (for about 15-20 seconds..!) you will get at least 1/2 liter of fluid from the slave cylinder.

Just to be clear: you do not need to engage the bleed mode for normal fluid replacement or bleeding. You only need that if you do something like replace the ABS pump, or if you get air in the system by running the MC dry.

Or someone else left air in the ABS/PSM modulator when they bled the brakes. I'd suggest doing it every time the flush is done. It costs nothing additional but a few pennies worth of brake fluid and in my experience (which goes back quite a ways) it's no surprise to me to have a firmer (sometimes much firmer) pedal when I was done. Air CAN get trapped in the modulator and a regular flush won't remove it. The circuits have to be activated to push the air out.

Thanks for the info. As i am researching, i see conflicting reports as to which to bleed first, outer or inner side of the caliper, Does the manual state which. Can you recommend an affordable shop manual that i should get.

Both issues: whether you should bleed the ABS when purging old brake fluid on a scheduled flush (with no other braking issues) whether to do inner or outer first belong in the same "must" category as " you must place the wheel center cap with the Porsche logo pointing to the air-fill valve ". I'm sure someone can be found who swears it made a difference.

If you trust Porsche there's clear answers to both of those in the service manual: no, and bleed at the outer bleeder first

Thank you. All very helpful. I will look into AllDataDIY. I did get the Foxwell NT 710 and it seems excellent

Let us know how you like the new NT-710. I suspect perhaps it's easier to use since it's an Android based system and it has touch-screen menus - not the chicklet like buttons the NT- 530 uses.

On the Foxwell subject, has anyone tried the GT60? I regularly work on different makes so getting one that works for most is preferred. I don't see this one mentioned here before. Any thoughts on the GT60?