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      12-09-2015, 11:00 AM   #22
WingMan42
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Drives: 07 335xi
Join Date: Nov 2015
Location: Raleigh NC

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Ive got the 51BO Code.. Brake switch signal not plausible for DSC.

and yes i did the brake bleed procedure by accident, and the pump was running… definitely made noises…

there is a function to check the clutch too, when i do that, i can hear a thump noise from the unit and my red brake, ABS and DSC light goes off for a second and then comes back on.

after that test function is complete it say clutch function test not ok..
not sure if thats a test for some sort of clutch in the DSC unit, or for a manual vehicle, bc mine is an Automatic Trans.

Also had the Longitudinal sensor calibration
Same thing happens when i run that test too, lights off on dash , then back on…


what could cause this code?
Appreciate 0