With ABS, ASC, DSC, etc...becoming so common in our cars these days, does utilizing conventional methods like using the one man suction gun connected to the bleeder screw or two person "pumping the pedal and bleeding", get out all the fluid within the ABS system? Is there a bleeder screw on the ABS that one accesses to do this?
Or, does the positive pressure method [where air is forced into the reservoir and dirty fluid exits out of the caliper screw[s]] completely removes fluid throughout the ABS unit as well as the Clutch slave?
Does anyone have confidence in their dealership to confirm that BMW dealers do dilligence with properly purging all old brake fluid from the entire system ? ANd if so, how does one know that the fluid is completely removed out of the ABS ? I certainly don't and so I can use a little education on this. TIA.