Bimmerfest - BMW Forums - View Single Post - 2002 E39 ASC BRAKE ABS lights on => Diagnostic Procedure & Parts Location
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Old 06-05-2009, 01:41 PM
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bluebee bluebee is offline
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Location: San Jose, California
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Mein Auto: 02 BMW 525i M54 auto 130K
Originally Posted by 540iman View Post
There is a pressure sensor mounted right on the back of the manifold behind the solenoids. Wonder if connections are loose or bad sensor?
Ah, this explanation helps. Thanks. Sorry for not knowing this ahead of time. This errant sensor reading might be the reason some people replace sensors and the ABS module yet still have the three warning lights lit.

It seems there is a "pressure sensor" P/N 34511165467 $111.68 screwed into the back of the hydro unit in the engine compartment of the 2002 E39.

I wonder what an "offset" error indicates?

Any advice how to test this ABS hydraulic unit "pressure sensor"?
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Last edited by bluebee; 06-05-2009 at 01:51 PM.
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