Mercedes ABC System

Asked by Mar 12, 2016 at 12:22 PM about the 2005 Mercedes-Benz SL-Class SL 500

Question type: Maintenance & Repair

How do you to depressurize the ABC system to remove front valve block
hoses. I opened bleeders by the two front wheels and PB1 & PB2 hoses still
appear to be rigid and possibly under pressure.

1 Answer

65

If you follow the lines from the struts you will see what looks like brake bleeder screws with rubber caps on them. Open those to depressurize.

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