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      11-13-2012, 02:42 PM   #5
TC Kline Racing
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Drives: Many BMW's & Porsche's
Join Date: Mar 2012
Location: Columbus, OH & Santa Barbara, CA

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Sensors are on driver side front and passenger side rear pads. Check those and see if the sensor has worn down, broke, or come disconnected.....and visually inspect pads as others have suggested.