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Old October 7th, 2005, 06:54 PM   #3
Dr. Zoom
Senior Member
Join Date: Feb 2005
Posts: 169
If the light just came on you may get lucky and not need to replace the sensor. The way it works is if the sensor wire is grounded or the circuit is open then the wear light comes on. There's a bit of time where the wire is in contact with the rotor (and therefore is grounded) but hasn't worn through the wire. In such a case you can reuse the sensor. If they need to be replaced they're about $15 each as I recall and can be replaced w/o removing the pads - which means they can be replaced after you do the brake job if desired.
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