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Sorry - I should have looked at your link. Basically, at new condition, there should be 0 ohms between the two pins. At 6mm of wear, there should be ~470 ohms. At 4mm, it should be open. So I likely either have a bad sensor or a bad connection. The sensor itself appears sealed, but it's easy...

Thanks for the reply. I did replace the wear sensor when I did the pads. I'm wondering how the sensor works. I figured the sensor grounded to the rotor when the plastic wore off and closed a circuit, but that's just a guess. But the connector for the sensor has two conductors, so I'm not really...

After about 54k miles, my front pads were ready for replacement. It's an easy DIY job to do the pads and wear sensor, but I can't seem to clear the warning message. I tried it using the display button method and with BimmerLink. Either way, it fails. Has anyone had success with this? Any input...