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Why does a shop manual have two separate brake bleeding procedures?

Is the method with the pro scan tool just for bleeding the ABS unit?

Do you need to open the solenoid with a scan tool if using one of those Motive pressure bleeder systems that attach on the master cylinder?

Also why is the bleeding sequence different in both?

I would like to use the Motive bleeder as I can never have someone (my own schedule is at fault too) available at the same time for the two person method.

2007 Sonata

If the brake system hasn’t been opened to replace a component, then normal bleeding is performed

If the brake system has been opened, then the ABS unit has to be bled also, which requires a scan tool.

Tester

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