My R500 (2006 155K) set the P2725 code internal electrical test of the component 'Y3/8y6 (B2 brake control solenoid valve) on Monday. I'm hoping I can get away with changing the solenoid valve only, and not need the reprogramming. Fluid was changed only @40K in 2009. Car still has both original Batteries (Aux and Main).
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