Quote:
Originally Posted by TerminatorX5
front brake pad wear sensor (as well as rear sensor) has only 2 wires which is one pair. when those two wires are shorted to each other, the system will think that the brake pad indicator is functional - when the pads wear too thin, the rolling rotor cuts through the metal of the sensor and thus interrupts the integrity of the connection...
You mentioned THREE wires - not sure which ones you are talking about....
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E53 had 2 wires. E70 has three. First interrupted circuit is used to project pad life. Second is used to confirm it is getting close, similar to the E53.
OP: use the rear sensor, disconnected, to determine the resistance between each pair of pins. Duplicate that with your front sensor until you get a replacement. I posted a link previously here with the BMW tech literature description of the functionality of the new sensor. Good luck.
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