Bleeding from ABS Brakes

[bvlenci]

Salutations everyone,


In search of some guidance. I would like to use the scan tool to bleed the abdominal system. After manually bleeding all of the brakes, I was told to activate the ABS pump and then bleed them again.

There are two options that appear when I go to the menu that should list abs bleeding on my Launch Creader Elite diagnostic tool: ESP(R) (Electronic Stability Program) and electronic parking brake. After going into the ESP(R), the high pressure and return flow pump A7/3m1 is listed. I haven't tried activating it yet, but clicking on it does give me the option to do so for three seconds. In the videos when scanners are used, the user is walked through the process step by step. For example, the scan tool would tell them to press the brake pedal, open the bleed screw, let the ABS pump run for 10 seconds, and then close the bleeder. In my opinion, this is not the correct menu to use for bleeding, even if A7/3m1 appears to be related to abdominals.

Which is why I decided to test out my Icarsoft v3 Merc scanner. 'Vehicle not supported'? After identifying the VIN and choosing ABS bleed from the menu, it stops working. Only a few months ago was the firmware changed, and now I'm completely bereft. My only Windows laptop is a corporate one, and they have restricted software downloads, so I won't be able to upgrade it until next week. Version 34.10 seems to be the one it's using.

Have you any recommendations? This 2019 S205 is a C43. The car is now off the road for repairs, therefore I can't drive it in a wet parking lot or slam on the brakes because it is SORN and uninsured. I would prefer not to purchase another scan tool if that is possible as well.

Much obliged

[CyberNinja]

It is not necessary to bleed the ABS unit unless the fluid level in the master cylinder drops too low, allowing air to enter the system.

[bvlenci]

To fix some damage, I had to cut the front brake line, but I couldn't find a way to prevent fluid from leaking out of the cut. It appeared like the tank was totally empty when I added fluid before the manual bleed.
A diagnostic tool that claims to be Mercedes-specific doesn't appear to function, and it's a little frustrating. It was supposed to be a quick task.

[MrGreedy]

I'm sorry, but I find your work style concerning. If you let the cylinders run dry, you're inviting trouble because the seals require constant moisture.
On a damaged bike, the brake fluid will drain quickly.


When bleeding the ABS unit, a scan tool is completely unnecessary. No need at all.

[bvlenci]

When you have to flare the end of the line while it's still in place, how do you prevent the line from leaking? Well, it's too late now; the work is done. It appears like a lot of people are trying ab pump and saying they can bleed like a pig if they get air, so I hope you're right.

[CyberNinja]

This vehicle, like many others I've had, including Jeeps and Alfas, requires the use of a scan tool. The ABS unit has valves that must be positioned in a specific way in order for air to be expelled during bleeding; otherwise, it will be extremely difficult, if not impossible, to remove the air using standard bleeding techniques.
The seals would also need to be dry for days before any danger would be present, thus your claims about them are completely without merit.

[jimmy47785]

Got a bike?

[jimmy47785]

I have purchased two icarsoft units—the mb3 and the cr pro—but neither of them have been compatible with my 2018–2019 GLC coupe.

[Matt865]

Press down on the brake pedal just enough, like you would at the start of applying the brakes, and hold yourself in place by pressing a stick into the seat or the wheel. The reservoir will no longer drain if that is done. Not in time for this task, but that's the way it's done in the future.

[Matt865]

😁