brake fluid flush question

[CarbonSteel]

Brake fluid, a buddy to operate the brake pedal (make sure that person is not deaf as they need to listen to you), one or two wrenches, some hose and a bottle (I still have an old glass snapple bottle with three different sized hoses shoved in it). After that do just the old fashioned brake bleed when it comes to flushing. Jeep is nothing special. I do it all of the time.

I even do the same thing in racing with a Bosch Motorsport ABS system and we even have the cable plus software to do a bleed for the ABS unit itself. Yet that only happens when things like, (you tear a corner off the car and brake fluid pukes itself all over the place and the ABS unit does dry on a channel). I have done it on certain cars where people do the Carolina Squat, then off road. Pop and axle and it rips the brake line off.

As for a flush, old school works.

As for a MC or changing a corner, if you attack the job smartly, then you can keep the ABS unit with no air or dry. Been doing it this way since 1980 (yes, ABS did exist back then).

Have you performed a brake bleed or a flush on a JL? It is definitely not "old school"--at least not if you want it done completely and correctly.

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[CarbonSteel]

those are the right tools for the job and those are the right people to ask. that being said, there are cheaper tools that are poo pooed by Rhinebeck01. this can be done with vlinker mc+ bluetooth obd 2 reader ($60 amazon), Jscan license ($21) and a 12+8 cable ($16? amazon). keep in mind, i would never do anything like this without the security gate extension cable you referenced ($32 amazon).
Rhinebeck01 has stated above that this is the clunky and outdated way i believe iirc but theoretically will allow you to access the same abs function.
i don’t think the exact sequence of buttons to press within the app have been delineated but it shouldn’t be too difficult to figure out.
once the bleed is complete, you can leave the extension in place and keep the bypass plugged into the two lines from the jeep that originally plugged into security gateway. you would disconnect the bypass and plug the two jeep lines into the extension cables if/when taking to the dealership.
if you complete the job then let us know how it went!

I agree with everything you said except the 12+8 cable. Go for a SGW bypass module instead. Rhinebeck has stated more than once the Vlinker is fine, but the MX+ is better. I agree with that assessment. I bought a Vlinker originally and then a LX and sent both back for the MX+.

 

[nositting]

what about the 12+8 cable don’t you agree with? that Rhinebeck01 said it was clunky or that it’s theoretically possible to run abs with it?
also? why did you get the mx+ obd 2 and return the others?

not trying to argue, or even debate, as much as i’m trying to learn from you as i respect both your and Rhinebeck01’s opinions.

 

[CarbonSteel]

what about the 12+8 cable don’t you agree with? that Rhinebeck01 said it was clunky or that it’s theoretically possible to run abs with it?
also? why did you get the mx+ obd 2 and return the others?

not trying to argue, or even debate, as much as i’m trying to learn from you as i respect both your and Rhinebeck01’s opinions.

I mean, the 12+8 will work and if you already have it, no need to replace it. If you have not bought any part of the required tools, then go for one of the approved models - https://jscan.net/supported-and-not-supported-obd-adapters/

It was the LX that I had (not the MX, sorry memory is short). The speed of the VLinker and LX was slow to me and I had some connectivity issues with the VLinker. At the time, the Jeep was a long term investment, so I went for the top model which was the MX+.

Hope this helps!

 

[nositting]

I mean, the 12+8 will work and if you already have it, no need to replace it. If you have not bought any part of the required tools, then go for one of the approved models - https://jscan.net/supported-and-not-supported-obd-adapters/

It was the LX that I had (not the MX, sorry memory is short). The speed of the VLinker and LX was slow to me and I had some connectivity issues with the VLinker. At the time, the Jeep was a long term investment, so I went for the top model which was the MX+.

Hope this helps!

got it, thanks.

i’m going to try to flush the brake fluid - probably in the spring. i’m hoping i don’t have to run the abs but we’ll see. i’ll update this thread or maybe start a new one with an update if others are interested.

 

[roaniecowpony]

got it, thanks.

i’m going to try to flush the brake fluid - probably in the spring. i’m hoping i don’t have to run the abs but we’ll see. i’ll update this thread or maybe start a new one with an update if others are interested.

There is nothing preventing you from doing a flush/bleed the system fluid without running the ABS. But it won't flush what's in the ABS valvebody/pump.

 

[dpike]

got it, thanks.

i’m going to try to flush the brake fluid - probably in the spring. i’m hoping i don’t have to run the abs but we’ll see. i’ll update this thread or maybe start a new one with an update if others are interested.

You close to Jersey ? I'm off of 78 in central Jersey and would be happy to help you out if you needed a hand.

 

[nositting]

There is nothing preventing you from doing a flush/bleed the system fluid without running the ABS. But it won't flush what's in the ABS valvebody/pump.

got it, thx

 

[nositting]

You close to Jersey ? I'm off of 78 in central Jersey and would be happy to help you out if you needed a hand.

not surprised someone from this forum offered help - thanks! i should be good but nice to get the offer!

 

[ecidiego]

There is nothing preventing you from doing a flush/bleed the system fluid without running the ABS. But it won't flush what's in the ABS valvebody/pump.

I mean... be careful doing this - but how about triggering the ABS prior to bleeding? Find some dirt in a WIDE OPEN area with no one around... go 20 mph ... slam on the brakes. Go home, do a normal bleed?

 

[Mx5red]

I mean... be careful doing this - but how about triggering the ABS prior to bleeding? Find some dirt in a WIDE OPEN area with no one around... go 20 mph ... slam on the brakes. Go home, do a normal bleed?

I thought this was an accepted DIY way to flush the abs??‍

 

[Odyssey USA]

Sooo. Bleeding brakes is something I’ve not done. I’ve done about everything else but a differential rebuild. The ABS aspect has me questioning whether I understand the process. Is the ABS cycled the whole time while you’re doing a traditional brake bleed process? And that JSCAN app will walk you through each step if that’s the case?

 

[roaniecowpony]

Sooo. Bleeding brakes is something I’ve not done. I’ve done about everything else but a differential rebuild. The ABS aspect has me questioning whether I understand the process. Is the ABS cycled the whole time while you’re doing a traditional brake bleed process? And that JSCAN app will walk you through each step if that’s the case?

JSCAN will lead you through the process.

 

[Odyssey USA]

JSCAN will lead you through the process.

Oh and is this the same Jscan device people use to adjust for gears/tires etc?

 

[58Willys]

Sooo. Bleeding brakes is something I’ve not done. I’ve done about everything else but a differential rebuild. The ABS aspect has me questioning whether I understand the process. Is the ABS cycled the whole time while you’re doing a traditional brake bleed process? And that JSCAN app will walk you through each step if that’s the case?

No, the ABS is not cycled during a regular brake bleed, that is why you need to activate and bleed ABS separately.

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